Merge branch 'next'

Custom splash screen from sd

.gitignore

@@ -63,4 +63,10 @@ CMakeFiles/
 
 # Host OS leftovers
 .DS_Store
-/firmware/CMakeCache.txt
+/firmware/CMakeCache.txt
+
+# Python env
+env/
+
+# Other
+*.bak

LICENSE

@@ -1,281 +1,622 @@
-GNU GENERAL PUBLIC LICENSE
-                       Version 2, June 1991
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
 
- Copyright (C) 1989, 1991 Free Software Foundation, Inc., <http://fsf.org/>
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
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+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
 this License.
 
-  7. If, as a consequence of a court judgment or allegation of patent
-infringement or for any other reason (not limited to patent issues),
-conditions are imposed on you (whether by court order, agreement or
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
 otherwise) that contradict the conditions of this License, they do not
-excuse you from the conditions of this License.  If you cannot
-distribute so as to satisfy simultaneously your obligations under this
-License and any other pertinent obligations, then as a consequence you
-may not distribute the Program at all.  For example, if a patent
-license would not permit royalty-free redistribution of the Program by
-all those who receive copies directly or indirectly through you, then
-the only way you could satisfy both it and this License would be to
-refrain entirely from distribution of the Program.
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
 
-If any portion of this section is held invalid or unenforceable under
-any particular circumstance, the balance of the section is intended to
-apply and the section as a whole is intended to apply in other
-circumstances.
+  13. Use with the GNU Affero General Public License.
 
-It is not the purpose of this section to induce you to infringe any
-patents or other property right claims or to contest validity of any
-such claims; this section has the sole purpose of protecting the
-integrity of the free software distribution system, which is
-implemented by public license practices.  Many people have made
-generous contributions to the wide range of software distributed
-through that system in reliance on consistent application of that
-system; it is up to the author/donor to decide if he or she is willing
-to distribute software through any other system and a licensee cannot
-impose that choice.
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
 
-This section is intended to make thoroughly clear what is believed to
-be a consequence of the rest of this License.
+  14. Revised Versions of this License.
 
-  8. If the distribution and/or use of the Program is restricted in
-certain countries either by patents or by copyrighted interfaces, the
-original copyright holder who places the Program under this License
-may add an explicit geographical distribution limitation excluding
-those countries, so that distribution is permitted only in or among
-countries not thus excluded.  In such case, this License incorporates
-the limitation as if written in the body of this License.
-
-  9. The Free Software Foundation may publish revised and/or new versions
-of the General Public License from time to time.  Such new versions will
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
 be similar in spirit to the present version, but may differ in detail to
 address new problems or concerns.
 
-Each version is given a distinguishing version number.  If the Program
-specifies a version number of this License which applies to it and "any
-later version", you have the option of following the terms and conditions
-either of that version or of any later version published by the Free
-Software Foundation.  If the Program does not specify a version number of
-this License, you may choose any version ever published by the Free Software
-Foundation.
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
 
-  10. If you wish to incorporate parts of the Program into other free
-programs whose distribution conditions are different, write to the author
-to ask for permission.  For software which is copyrighted by the Free
-Software Foundation, write to the Free Software Foundation; we sometimes
-make exceptions for this.  Our decision will be guided by the two goals
-of preserving the free status of all derivatives of our free software and
-of promoting the sharing and reuse of software generally.
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
 
-                            NO WARRANTY
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
 
-  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
-FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
-OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
-PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
-OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
-TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
-PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
-REPAIR OR CORRECTION.
+  15. Disclaimer of Warranty.
 
-  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
-REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
-OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
-TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
-YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
-PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGES.
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
 
                      END OF TERMS AND CONDITIONS
 
@@ -287,15 +628,15 @@ free software which everyone can redistribute and change under these terms.
 
   To do so, attach the following notices to the program.  It is safest
 to attach them to the start of each source file to most effectively
-convey the exclusion of warranty; and each file should have at least
+state the exclusion of warranty; and each file should have at least
 the "copyright" line and a pointer to where the full notice is found.
 
-    {description}
-    Copyright (C) {year}  {fullname}
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
 
-    This program is free software; you can redistribute it and/or modify
+    This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
+    the Free Software Foundation, either version 3 of the License, or
     (at your option) any later version.
 
     This program is distributed in the hope that it will be useful,
@@ -303,37 +644,31 @@ the "copyright" line and a pointer to where the full notice is found.
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
-    You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 Also add information on how to contact you by electronic and paper mail.
 
-If the program is interactive, make it output a short notice like this
-when it starts in an interactive mode:
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
 
-    Gnomovision version 69, Copyright (C) year name of author
-    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
     This is free software, and you are welcome to redistribute it
     under certain conditions; type `show c' for details.
 
 The hypothetical commands `show w' and `show c' should show the appropriate
-parts of the General Public License.  Of course, the commands you use may
-be called something other than `show w' and `show c'; they could even be
-mouse-clicks or menu items--whatever suits your program.
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
 
-You should also get your employer (if you work as a programmer) or your
-school, if any, to sign a "copyright disclaimer" for the program, if
-necessary.  Here is a sample; alter the names:
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
 
-  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
-  `Gnomovision' (which makes passes at compilers) written by James Hacker.
-
-  {signature of Ty Coon}, 1 April 1989
-  Ty Coon, President of Vice
-
-This General Public License does not permit incorporating your program into
-proprietary programs.  If your program is a subroutine library, you may
-consider it more useful to permit linking proprietary applications with the
-library.  If this is what you want to do, use the GNU Lesser General
-Public License instead of this License.
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

LICENSE.GPL-2.0-or-later

@@ -0,0 +1,339 @@
+GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc., <http://fsf.org/>
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+                            NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    {description}
+    Copyright (C) {year}  {fullname}
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  {signature of Ty Coon}, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.

LICENSE.md

@@ -0,0 +1,7 @@
+# License 
+Portapack Mayhem is distributed under GPL v3.0, however some sub projects might have different (GPL v3.0 compatible) licenses.
+
+## Other Licenses (compatible with GPL v3.0)
+- Most of Portapack Mayhem is distributed under GPL-2.0-or-later. [license](LICENSE.GPL-2.0-or-later)
+- ChibiOS is distributed under GPL v3.0. [license](/firmware/chibios/license.txt)
+- Portapack-ChibiOS is distributed under Apache-2.0 [license](http://www.apache.org/licenses/LICENSE-2.0)

README.md

@@ -1,8 +1,6 @@
-> ⚠ **BEFORE BUYING YOURS:** Beware of hardware mods that use a custom firmware, which are [NOT COMPATIBLE](https://github.com/eried/portapack-mayhem/issues/264) with older forks, and they do not follow the license. **ASK THE SELLER if the unit works with an specific firmware, for example, pointing to the [![GitHub release (latest by date)](https://img.shields.io/github/v/release/eried/portapack-mayhem?label=latest%20release&style=social)](https://github.com/eried/portapack-mayhem/releases/latest) on this repository**
-
 # PortaPack Mayhem
 
-[![Build Status](https://travis-ci.com/eried/portapack-mayhem.svg?branch=master)](https://travis-ci.com/eried/portapack-mayhem) [![buddy pipeline](https://app.buddy.works/eried/portapack/pipelines/pipeline/252276/badge.svg?token=48cd59d53de0589a8fbe26bc751d77a59a011cf72581da049343879402991c34 "buddy pipeline")](https://app.buddy.works/eried/portapack/pipelines/pipeline/252276) [![CodeScene Code Health](https://codescene.io/projects/8381/status-badges/code-health)](https://codescene.io/projects/8381) [![GitHub All Releases](https://img.shields.io/github/downloads/eried/portapack-mayhem/total)](https://github.com/eried/portapack-mayhem/releases) [![GitHub Releases](https://img.shields.io/github/downloads/eried/portapack-mayhem/latest/total)](https://github.com/eried/portapack-mayhem/releases/latest) [![Docker Hub Pulls](https://img.shields.io/docker/pulls/eried/portapack.svg)](https://hub.docker.com/r/eried/portapack) [![Discord Chat](https://img.shields.io/discord/719669764804444213.svg)](https://discord.gg/tuwVMv3)  [![Check bounties!](https://img.shields.io/bountysource/team/portapack-mayhem/activity?color=%2333ccff&label=bountysource%20%28USD%29&style=plastic)](https://www.bountysource.com/teams/portapack-mayhem/issues)
+[![Build Status](https://travis-ci.com/eried/portapack-mayhem.svg?branch=master)](https://travis-ci.com/eried/portapack-mayhem) [![CodeScene Code Health](https://codescene.io/projects/8381/status-badges/code-health)](https://codescene.io/projects/8381) [![GitHub All Releases](https://img.shields.io/github/downloads/eried/portapack-mayhem/total)](https://github.com/eried/portapack-mayhem/releases) [![GitHub Releases](https://img.shields.io/github/downloads/eried/portapack-mayhem/latest/total)](https://github.com/eried/portapack-mayhem/releases/latest) [![Docker Hub Pulls](https://img.shields.io/docker/pulls/eried/portapack.svg)](https://hub.docker.com/r/eried/portapack) [![Discord Chat](https://img.shields.io/discord/719669764804444213.svg)](https://discord.gg/tuwVMv3)  [![Check bounties!](https://img.shields.io/bountysource/team/portapack-mayhem/activity?color=%2333ccff&label=bountysource%20%28USD%29&style=plastic)](https://www.bountysource.com/teams/portapack-mayhem/issues)
 
 This is a fork of the [Havoc](https://github.com/furrtek/portapack-havoc/) firmware, which itself was a fork of the [PortaPack](https://github.com/sharebrained/portapack-hackrf) firmware, an add-on for the [HackRF](http://greatscottgadgets.com/hackrf/). A fork is a derivate, in this case one that has extra features and fixes when compared to the older versions.
 
@@ -28,7 +26,7 @@ To support the people behind the hardware, please buy a genuine [HackRF](https:/
 
 ## Where is the latest firmware?
 
-The current stable release is on the [![GitHub release (latest by date)](https://img.shields.io/github/v/release/eried/portapack-mayhem?label=Releases&style=social)](https://github.com/eried/portapack-mayhem/releases/latest) page. Follow the instructions you can find in the release description. There is also [nightly builds](https://github.com/eried/portapack-mayhem/releases/tag/nightly) generated periodically, which include the latest commits, but they may contain incomplete or buggy functionality.
+The current stable release is on the [![GitHub release (latest by date)](https://img.shields.io/github/v/release/eried/portapack-mayhem?label=Releases&style=social)](https://github.com/eried/portapack-mayhem/releases/latest) page. Follow the instructions you can find in the release description. 
 
 ## Is this the newest firmware for my PortaPack? 
 Most probably: **YES**. *If you find new features somewhere else, please [suggest](https://github.com/eried/portapack-mayhem/issues/new/choose) them*.

dockerfile

@@ -18,7 +18,7 @@ RUN apt-get update && \
 	apt-get -qy autoremove
 
 #Install current pip from PyPa
-RUN curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py && \
+RUN curl https://bootstrap.pypa.io/pip/3.4/get-pip.py -o get-pip.py && \
 	python get-pip.py
 
 #Fetch additional dependencies from Python 2.x pip

dockerfile-nogit

@@ -15,7 +15,7 @@ RUN apt-get update && \
 	apt-get -qy autoremove
 
 #Install current pip from PyPa
-RUN curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py && \
+RUN curl https://bootstrap.pypa.io/pip/3.4/get-pip.py -o get-pip.py && \
 	python3 get-pip.py
 
 #Fetch additional dependencies from Python 3.x pip
@@ -38,4 +38,4 @@ RUN mkdir ~/bin && cd ~/bin && \
 	for tool in gcc g++ cpp c++;do ln -s $(which ccache) arm-none-eabi-$tool;done
 
 CMD cd .. && cd build && \
-    cmake .. && make firmware
+    cmake .. && make firmware

firmware/application/CMakeLists.txt

@@ -140,6 +140,7 @@ set(CPPSRC
 	${COMMON}/png_writer.cpp
 	${COMMON}/pocsag.cpp
 	${COMMON}/pocsag_packet.cpp
+	${COMMON}/aprs_packet.cpp
 	${COMMON}/portapack_io.cpp
 	${COMMON}/portapack_persistent_memory.cpp
 	${COMMON}/portapack_shared_memory.cpp
@@ -218,6 +219,7 @@ set(CPPSRC
 	apps/ui_adsb_rx.cpp
 	apps/ui_adsb_tx.cpp
 	apps/ui_afsk_rx.cpp
+	apps/ui_aprs_rx.cpp
 	apps/ui_btle_rx.cpp
 	apps/ui_nrf_rx.cpp
 	apps/ui_aprs_tx.cpp

firmware/application/apps/analog_tv_app.cpp

@@ -199,7 +199,7 @@ void AnalogTvView::on_show_options_rf_gain() {
 void AnalogTvView::on_show_options_modulation() {
 	std::unique_ptr<Widget> widget;
 
-	const auto modulation = static_cast<ReceiverModel::Mode>(receiver_model.modulation());
+	static_cast<ReceiverModel::Mode>(receiver_model.modulation());
 	tv.show_audio_spectrum_view(true);
 	
 	set_options_widget(std::move(widget));
@@ -216,6 +216,7 @@ void AnalogTvView::on_reference_ppm_correction_changed(int32_t v) {
 }
 
 void AnalogTvView::on_headphone_volume_changed(int32_t v) {
+	(void)v; //avoid warning
 	//tv::TVView::set_headphone_volume(this,v);
 }
 

firmware/application/apps/analog_tv_app.hpp

@@ -107,7 +107,7 @@ private:
 
 	std::unique_ptr<Widget> options_widget { };
 
-	tv::TVWidget tv { true };
+	tv::TVWidget tv { };
 
 	void on_tuning_frequency_changed(rf::Frequency f);
 	void on_baseband_bandwidth_changed(uint32_t bandwidth_hz);

firmware/application/apps/capture_app.cpp

@@ -74,17 +74,58 @@ CaptureAppView::CaptureAppView(NavigationView& nav) {
 	
 	option_bandwidth.on_change = [this](size_t, uint32_t base_rate) {
 		sampling_rate = 8 * base_rate;	// Decimation by 8 done on baseband side
-		
+  	    /* base_rate  is used for FFT calculation and display LCD, and also in  recording writing SD Card  rate. */
+		/* ex. sampling_rate values, 4Mhz, when recording 500 khz (BW) and fs 8 Mhz , when selected 1 Mhz BW ...*/ 
+	    /* ex. recording 500khz BW  to .C16 file, base_rate clock 500khz x2(I,Q) x 2 bytes (int signed) =2MB/sec rate SD Card  */
+
 		waterfall.on_hide();
 		record_view.set_sampling_rate(sampling_rate);
 		receiver_model.set_sampling_rate(sampling_rate);
+       /* Set up  proper anti aliasing BPF bandwith in MAX2837 before ADC sampling according to the new added BW Options . */ 
+		
+		switch(sampling_rate) {   // we use the var fs (sampling_rate) , to set up BPF aprox < fs_max/2 by Nyquist theorem. 
+	  
+	  			case 0 ... 2000000:  //  BW Captured range  (0 <= 250Khz max )  fs = 8 x 250 Khz 
+					anti_alias_baseband_bandwidth_filter = 1750000;  // Minimum BPF MAX2837 for all those lower BW options.
+        	 		break;
+
+				case 4000000 ... 6000000:    // BW capture  range (500k ... 750Khz max )  fs_max = 8 x 750Khz = 6Mhz 
+     				//  BW 500k ... 750khz   ,  ex. 500khz   (fs = 8*BW =  4Mhz) , BW 600Khz (fs = 4,8Mhz) , BW  750 Khz (fs = 6Mhz)  
+					anti_alias_baseband_bandwidth_filter = 2500000;  // in some IC MAX2837 appear 2250000 , but both works similar. 
+					break;	
+
+				case 8800000:    // BW capture 1,1Mhz  fs = 8 x 1,1Mhz = 8,8Mhz . (1Mhz showed slightly higher noise background).
+					anti_alias_baseband_bandwidth_filter = 3500000;   
+        	 		break;
+
+			    case 14000000:   // BW capture 1,75Mhz  , fs = 8 x 1,75Mhz = 14Mhz 
+				    // good BPF ,good matching, but LCD making flicker , refresh rate should be < 20 Hz , but reasonable picture   
+         			anti_alias_baseband_bandwidth_filter = 5000000; 
+        			break;
+
+    			case 16000000:   // BW capture 2Mhz  , fs = 8 x 2Mhz = 16Mhz
+                     //  good BPF ,good matching, but LCD making flicker , refresh rate should be < 20 Hz , but reasonable picture   
+         			anti_alias_baseband_bandwidth_filter = 6000000; 
+        			break;
+   
+            	case 20000000:   // BW capture 2,5Mhz  , fs= 8 x 2,5 Mhz = 20Mhz
+         			//  good BPF ,good matching, but LCD making flicker , refresh rate should be < 20 Hz , but reasonable picture 
+					 anti_alias_baseband_bandwidth_filter = 7000000; 
+	   	         	break;
+		   	
+      			default:         // BW capture 2,75Mhz, fs = 8 x 2,75Mhz= 22Mhz max ADC sampling)  and others.  
+        			 //  We tested also 9Mhz FPB stightly too much noise floor , better 8Mhz 
+					 anti_alias_baseband_bandwidth_filter = 8000000;
+		}   
+		receiver_model.set_baseband_bandwidth(anti_alias_baseband_bandwidth_filter);
+							
+		
 		waterfall.on_show();
 	};
 	
-	option_bandwidth.set_selected_index(7);		// 500k
+	option_bandwidth.set_selected_index(7);		// 500k,  Preselected starting default option 500khz 
 	
 	receiver_model.set_modulation(ReceiverModel::Mode::Capture);
-	receiver_model.set_baseband_bandwidth(baseband_bandwidth);
 	receiver_model.enable();
 
 	record_view.on_error = [&nav](std::string message) {

firmware/application/apps/capture_app.hpp

@@ -48,7 +48,7 @@ private:
 	static constexpr ui::Dim header_height = 3 * 16;
 
 	uint32_t sampling_rate = 0;
-	static constexpr uint32_t baseband_bandwidth = 2500000;
+	uint32_t anti_alias_baseband_bandwidth_filter = 2500000; // we rename the previous var , and change type static constexpr to normal var.
 
 	void on_tuning_frequency_changed(rf::Frequency f);
 
@@ -95,7 +95,14 @@ private:
 			{ " 50k ", 50000 },
 			{ "100k ", 100000 },
 			{ "250k ", 250000 },
-			{ "500k ", 500000 }
+			{ "500k ", 500000 },   // Previous Limit bandwith Option with perfect micro SD write .C16 format operaton.
+			{ "600k ", 600000 },   // That extended option is still possible to record with FW version Mayhem v1.41 (< 2,5MB/sec)  
+ 			{ "750k ", 750000 },   // From that BW onwards, the LCD is ok, but the recorded file is auto decimated,(not real file size) 
+			{ "1100k", 1100000 },
+	       	{ "1750k", 1750000 },
+			{ "2000k", 2000000 },
+			{ "2500k", 2500000 },
+			{ "2750k", 2750000 }    // That is our max Capture option , to keep using later / 8 decimation (22Mhz sampling  ADC)
 		}
 	};
 	

firmware/application/apps/dump1090.hpp

@@ -0,0 +1,444 @@
+// Part of dump1090, a Mode S message decoder for RTLSDR devices.
+//
+// dump1090.h: main program header
+//
+// Copyright (c) 2014-2016 Oliver Jowett <oliver@mutability.co.uk>
+//
+// This file is free software: you may copy, redistribute and/or modify it
+// under the terms of the GNU General Public License as published by the
+// Free Software Foundation, either version 2 of the License, or (at your
+// option) any later version.
+//
+// This file is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+// This file incorporates work covered by the following copyright and
+// permission notice:
+//
+//   Copyright (C) 2012 by Salvatore Sanfilippo <antirez@gmail.com>
+//
+//   All rights reserved.
+//
+//   Redistribution and use in source and binary forms, with or without
+//   modification, are permitted provided that the following conditions are
+//   met:
+//
+//    *  Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//
+//    *  Redistributions in binary form must reproduce the above copyright
+//       notice, this list of conditions and the following disclaimer in the
+//       documentation and/or other materials provided with the distribution.
+//
+//   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+//   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+//   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+//   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+//   HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+//   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+//   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+//   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+//   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+//   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+//   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef __DUMP1090_H
+#define __DUMP1090_H
+
+// Default version number, if not overriden by the Makefile
+#ifndef MODES_DUMP1090_VERSION
+# define MODES_DUMP1090_VERSION     "unknown"
+#endif
+
+#ifndef MODES_DUMP1090_VARIANT
+# define MODES_DUMP1090_VARIANT     "dump1090-unknown"
+#endif
+
+
+#define MODES_DEFAULT_FREQ         1090000000
+#define MODES_DEFAULT_WIDTH        1000
+#define MODES_DEFAULT_HEIGHT       700
+#define MODES_RTL_BUFFERS          15                         // Number of RTL buffers
+#define MODES_RTL_BUF_SIZE         (16*16384)                 // 256k
+#define MODES_MAG_BUF_SAMPLES      (MODES_RTL_BUF_SIZE / 2)   // Each sample is 2 bytes
+#define MODES_MAG_BUFFERS          12                         // Number of magnitude buffers (should be smaller than RTL_BUFFERS for flowcontrol to work)
+#define MODES_AUTO_GAIN            -100                       // Use automatic gain
+#define MODES_MAX_GAIN             999999                     // Use max available gain
+#define MODES_MSG_SQUELCH_DB       4.0                        // Minimum SNR, in dB
+#define MODES_MSG_ENCODER_ERRS     3                          // Maximum number of encoding errors
+
+#define MODEAC_MSG_SAMPLES       (25 * 2)                     // include up to the SPI bit
+#define MODEAC_MSG_BYTES          2
+#define MODEAC_MSG_SQUELCH_LEVEL  0x07FF                      // Average signal strength limit
+
+#define MODES_PREAMBLE_US        8              // microseconds = bits
+#define MODES_PREAMBLE_SAMPLES  (MODES_PREAMBLE_US       * 2)
+#define MODES_PREAMBLE_SIZE     (MODES_PREAMBLE_SAMPLES  * sizeof(uint16_t))
+#define MODES_LONG_MSG_BYTES     14
+#define MODES_SHORT_MSG_BYTES    7
+#define MODES_LONG_MSG_BITS     (MODES_LONG_MSG_BYTES    * 8)
+#define MODES_SHORT_MSG_BITS    (MODES_SHORT_MSG_BYTES   * 8)
+#define MODES_LONG_MSG_SAMPLES  (MODES_LONG_MSG_BITS     * 2)
+#define MODES_SHORT_MSG_SAMPLES (MODES_SHORT_MSG_BITS    * 2)
+#define MODES_LONG_MSG_SIZE     (MODES_LONG_MSG_SAMPLES  * sizeof(uint16_t))
+#define MODES_SHORT_MSG_SIZE    (MODES_SHORT_MSG_SAMPLES * sizeof(uint16_t))
+
+#define MODES_OS_PREAMBLE_SAMPLES  (20)
+#define MODES_OS_PREAMBLE_SIZE     (MODES_OS_PREAMBLE_SAMPLES  * sizeof(uint16_t))
+#define MODES_OS_LONG_MSG_SAMPLES  (268)
+#define MODES_OS_SHORT_MSG_SAMPLES (135)
+#define MODES_OS_LONG_MSG_SIZE     (MODES_LONG_MSG_SAMPLES  * sizeof(uint16_t))
+#define MODES_OS_SHORT_MSG_SIZE    (MODES_SHORT_MSG_SAMPLES * sizeof(uint16_t))
+
+#define MODES_OUT_BUF_SIZE         (1500)
+#define MODES_OUT_FLUSH_SIZE       (MODES_OUT_BUF_SIZE - 256)
+#define MODES_OUT_FLUSH_INTERVAL   (60000)
+
+#define MODES_USER_LATLON_VALID (1<<0)
+
+#define INVALID_ALTITUDE (-9999)
+
+/* Where did a bit of data arrive from? In order of increasing priority */
+typedef enum {
+    SOURCE_INVALID,        /* data is not valid */
+    SOURCE_MODE_AC,        /* A/C message */
+    SOURCE_MLAT,           /* derived from mlat */
+    SOURCE_MODE_S,         /* data from a Mode S message, no full CRC */
+    SOURCE_MODE_S_CHECKED, /* data from a Mode S message with full CRC */
+    SOURCE_TISB,           /* data from a TIS-B extended squitter message */
+    SOURCE_ADSR,           /* data from a ADS-R extended squitter message */
+    SOURCE_ADSB,           /* data from a ADS-B extended squitter message */
+} datasource_t;
+
+/* What sort of address is this and who sent it?
+ * (Earlier values are higher priority)
+ */
+typedef enum {
+    ADDR_ADSB_ICAO,       /* Mode S or ADS-B, ICAO address, transponder sourced */
+    ADDR_ADSB_ICAO_NT,    /* ADS-B, ICAO address, non-transponder */
+    ADDR_ADSR_ICAO,       /* ADS-R, ICAO address */
+    ADDR_TISB_ICAO,       /* TIS-B, ICAO address */
+
+    ADDR_ADSB_OTHER,      /* ADS-B, other address format */
+    ADDR_ADSR_OTHER,      /* ADS-R, other address format */
+    ADDR_TISB_TRACKFILE,  /* TIS-B, Mode A code + track file number */
+    ADDR_TISB_OTHER,      /* TIS-B, other address format */
+
+    ADDR_MODE_A,          /* Mode A */
+
+    ADDR_UNKNOWN          /* unknown address format */
+} addrtype_t;
+
+typedef enum {
+    UNIT_FEET,
+    UNIT_METERS
+} altitude_unit_t;
+
+typedef enum {
+    UNIT_NAUTICAL_MILES,
+    UNIT_STATUTE_MILES,
+    UNIT_KILOMETERS,
+} interactive_distance_unit_t;
+
+typedef enum {
+    ALTITUDE_BARO,
+    ALTITUDE_GEOM
+} altitude_source_t;
+
+typedef enum {
+    AG_INVALID,
+    AG_GROUND,
+    AG_AIRBORNE,
+    AG_UNCERTAIN
+} airground_t;
+
+typedef enum {
+    SIL_INVALID, SIL_UNKNOWN, SIL_PER_SAMPLE, SIL_PER_HOUR
+} sil_type_t;
+
+typedef enum {
+    CPR_SURFACE, CPR_AIRBORNE, CPR_COARSE
+} cpr_type_t;
+
+typedef enum {
+    HEADING_INVALID,          // Not set
+    HEADING_GROUND_TRACK,     // Direction of track over ground, degrees clockwise from true north
+    HEADING_TRUE,             // Heading, degrees clockwise from true north
+    HEADING_MAGNETIC,         // Heading, degrees clockwise from magnetic north
+    HEADING_MAGNETIC_OR_TRUE, // HEADING_MAGNETIC or HEADING_TRUE depending on the HRD bit in opstatus
+    HEADING_TRACK_OR_HEADING  // GROUND_TRACK / MAGNETIC / TRUE depending on the TAH bit in opstatus
+} heading_type_t;
+
+typedef enum {
+    COMMB_UNKNOWN,
+    COMMB_AMBIGUOUS,
+    COMMB_EMPTY_RESPONSE,
+    COMMB_DATALINK_CAPS,
+    COMMB_GICB_CAPS,
+    COMMB_AIRCRAFT_IDENT,
+    COMMB_ACAS_RA,
+    COMMB_VERTICAL_INTENT,
+    COMMB_TRACK_TURN,
+    COMMB_HEADING_SPEED
+} commb_format_t;
+
+typedef enum {
+    NAV_MODE_AUTOPILOT = 1,
+    NAV_MODE_VNAV = 2,
+    NAV_MODE_ALT_HOLD = 4,
+    NAV_MODE_APPROACH = 8,
+    NAV_MODE_LNAV = 16,
+    NAV_MODE_TCAS = 32
+} nav_modes_t;
+
+// Matches encoding of the ES type 28/1 emergency/priority status subfield
+typedef enum {
+    EMERGENCY_NONE = 0,
+    EMERGENCY_GENERAL = 1,
+    EMERGENCY_LIFEGUARD = 2,
+    EMERGENCY_MINFUEL = 3,
+    EMERGENCY_NORDO = 4,
+    EMERGENCY_UNLAWFUL = 5,
+    EMERGENCY_DOWNED = 6,
+    EMERGENCY_RESERVED = 7
+} emergency_t;
+
+typedef enum {
+    NAV_ALT_INVALID, NAV_ALT_UNKNOWN, NAV_ALT_AIRCRAFT, NAV_ALT_MCP, NAV_ALT_FMS
+} nav_altitude_source_t;
+
+#define MODES_NON_ICAO_ADDRESS       (1<<24) // Set on addresses to indicate they are not ICAO addresses
+
+#define MODES_INTERACTIVE_REFRESH_TIME 250      // Milliseconds
+#define MODES_INTERACTIVE_DISPLAY_TTL 60000     // Delete from display after 60 seconds
+
+#define MODES_NET_HEARTBEAT_INTERVAL 60000      // milliseconds
+
+#define MODES_CLIENT_BUF_SIZE  1024
+#define MODES_NET_SNDBUF_SIZE (1024*64)
+#define MODES_NET_SNDBUF_MAX  (7)
+
+#define HISTORY_SIZE 120
+#define HISTORY_INTERVAL 30000
+
+#define MODES_NOTUSED(V) ((void) V)
+
+#define MAX_AMPLITUDE 65535.0
+#define MAX_POWER (MAX_AMPLITUDE * MAX_AMPLITUDE)
+
+#define FAUP_DEFAULT_RATE_MULTIPLIER    1.0                  // FA Upload rate multiplier
+
+
+//======================== structure declarations =========================
+
+typedef enum {
+    SDR_NONE, SDR_IFILE, SDR_RTLSDR, SDR_BLADERF, SDR_HACKRF, SDR_LIMESDR
+} sdr_type_t;
+
+
+// The struct we use to store information about a decoded message.
+struct modesMessage {
+    // Generic fields
+    unsigned char msg[MODES_LONG_MSG_BYTES];      // Binary message.
+    unsigned char verbatim[MODES_LONG_MSG_BYTES]; // Binary message, as originally received before correction
+    int           msgbits;                        // Number of bits in message
+    int           msgtype;                        // Downlink format #
+    uint32_t      crc;                            // Message CRC
+    int           correctedbits;                  // No. of bits corrected
+    uint32_t      addr;                           // Address Announced
+    addrtype_t    addrtype;                       // address format / source
+    uint64_t      timestampMsg;                   // Timestamp of the message (12MHz clock)
+    uint64_t      sysTimestampMsg;                // Timestamp of the message (system time)
+    int           remote;                         // If set this message is from a remote station
+    double        signalLevel;                    // RSSI, in the range [0..1], as a fraction of full-scale power
+    int           score;                          // Scoring from scoreModesMessage, if used
+    int           reliable;                       // is this a "reliable" message (uncorrected DF11/DF17/DF18)?
+
+    datasource_t  source;                         // Characterizes the overall message source
+
+    // Raw data, just extracted directly from the message
+    // The names reflect the field names in Annex 4
+    unsigned IID; // extracted from CRC of DF11s
+    unsigned AA;
+    unsigned AC;
+    unsigned CA;
+    unsigned CC;
+    unsigned CF;
+    unsigned DR;
+    unsigned FS;
+    unsigned ID;
+    unsigned KE;
+    unsigned ND;
+    unsigned RI;
+    unsigned SL;
+    unsigned UM;
+    unsigned VS;
+    unsigned char MB[7];
+    unsigned char MD[10];
+    unsigned char ME[7];
+    unsigned char MV[7];
+
+    // Decoded data
+    unsigned altitude_baro_valid : 1;
+    unsigned altitude_geom_valid : 1;
+    unsigned track_valid : 1;
+    unsigned track_rate_valid : 1;
+    unsigned heading_valid : 1;
+    unsigned roll_valid : 1;
+    unsigned gs_valid : 1;
+    unsigned ias_valid : 1;
+    unsigned tas_valid : 1;
+    unsigned mach_valid : 1;
+    unsigned baro_rate_valid : 1;
+    unsigned geom_rate_valid : 1;
+    unsigned squawk_valid : 1;
+    unsigned callsign_valid : 1;
+    unsigned cpr_valid : 1;
+    unsigned cpr_odd : 1;
+    unsigned cpr_decoded : 1;
+    unsigned cpr_relative : 1;
+    unsigned category_valid : 1;
+    unsigned geom_delta_valid : 1;
+    unsigned from_mlat : 1;
+    unsigned from_tisb : 1;
+    unsigned spi_valid : 1;
+    unsigned spi : 1;
+    unsigned alert_valid : 1;
+    unsigned alert : 1;
+    unsigned emergency_valid : 1;
+
+    unsigned metype; // DF17/18 ME type
+    unsigned mesub;  // DF17/18 ME subtype
+
+    commb_format_t commb_format; // Inferred format of a comm-b message
+
+    // valid if altitude_baro_valid:
+    int               altitude_baro;       // Altitude in either feet or meters
+    altitude_unit_t   altitude_baro_unit;  // the unit used for altitude
+
+    // valid if altitude_geom_valid:
+    int               altitude_geom;       // Altitude in either feet or meters
+    altitude_unit_t   altitude_geom_unit;  // the unit used for altitude
+
+    // following fields are valid if the corresponding _valid field is set:
+    int      geom_delta;        // Difference between geometric and baro alt
+    float    heading;           // ground track or heading, degrees (0-359). Reported directly or computed from from EW and NS velocity
+    heading_type_t heading_type;// how to interpret 'track_or_heading'
+    float    track_rate;        // Rate of change of track, degrees/second
+    float    roll;              // Roll, degrees, negative is left roll
+    struct {
+        // Groundspeed, kts, reported directly or computed from from EW and NS velocity
+        // For surface movement, this has different interpretations for v0 and v2; both
+        // fields are populated. The tracking layer will update "gs.selected".
+        float v0;
+        float v2;
+        float selected;
+    } gs;
+    unsigned ias;               // Indicated airspeed, kts
+    unsigned tas;               // True airspeed, kts
+    double   mach;              // Mach number
+    int      baro_rate;         // Rate of change of barometric altitude, feet/minute
+    int      geom_rate;         // Rate of change of geometric (GNSS / INS) altitude, feet/minute
+    unsigned squawk;            // 13 bits identity (Squawk), encoded as 4 hex digits
+    char     callsign[9];       // 8 chars flight number, NUL-terminated
+    unsigned category;          // A0 - D7 encoded as a single hex byte
+    emergency_t emergency;      // emergency/priority status
+
+    // valid if cpr_valid
+    cpr_type_t cpr_type;       // The encoding type used (surface, airborne, coarse TIS-B)
+    unsigned   cpr_lat;        // Non decoded latitude.
+    unsigned   cpr_lon;        // Non decoded longitude.
+    unsigned   cpr_nucp;       // NUCp/NIC value implied by message type
+
+    airground_t airground;     // air/ground state
+
+    // valid if cpr_decoded:
+    double decoded_lat;
+    double decoded_lon;
+    unsigned decoded_nic;
+    unsigned decoded_rc;
+
+    // various integrity/accuracy things
+    struct {
+        unsigned nic_a_valid : 1;
+        unsigned nic_b_valid : 1;
+        unsigned nic_c_valid : 1;
+        unsigned nic_baro_valid : 1;
+        unsigned nac_p_valid : 1;
+        unsigned nac_v_valid : 1;
+        unsigned gva_valid : 1;
+        unsigned sda_valid : 1;
+
+        unsigned nic_a : 1;        // if nic_a_valid
+        unsigned nic_b : 1;        // if nic_b_valid
+        unsigned nic_c : 1;        // if nic_c_valid
+        unsigned nic_baro : 1;     // if nic_baro_valid
+
+        unsigned nac_p : 4;        // if nac_p_valid
+        unsigned nac_v : 3;        // if nac_v_valid
+
+        unsigned sil : 2;          // if sil_type != SIL_INVALID
+        sil_type_t sil_type;
+
+        unsigned gva : 2;          // if gva_valid
+
+        unsigned sda : 2;          // if sda_valid
+    } accuracy;
+
+    // Operational Status
+    struct {
+        unsigned valid : 1;
+        unsigned version : 3;
+
+        unsigned om_acas_ra : 1;
+        unsigned om_ident : 1;
+        unsigned om_atc : 1;
+        unsigned om_saf : 1;
+
+        unsigned cc_acas : 1;
+        unsigned cc_cdti : 1;
+        unsigned cc_1090_in : 1;
+        unsigned cc_arv : 1;
+        unsigned cc_ts : 1;
+        unsigned cc_tc : 2;
+        unsigned cc_uat_in : 1;
+        unsigned cc_poa : 1;
+        unsigned cc_b2_low : 1;
+        unsigned cc_lw_valid : 1;
+
+        heading_type_t tah;
+        heading_type_t hrd;
+
+        unsigned cc_lw;
+        unsigned cc_antenna_offset;
+    } opstatus;
+
+    // combined:
+    //   Target State & Status (ADS-B V2 only)
+    //   Comm-B BDS4,0 Vertical Intent
+    struct {
+        unsigned heading_valid : 1;
+        unsigned fms_altitude_valid : 1;
+        unsigned mcp_altitude_valid : 1;
+        unsigned qnh_valid : 1;
+        unsigned modes_valid : 1;
+
+        float    heading;       // heading, degrees (0-359) (could be magnetic or true heading; magnetic recommended)
+        heading_type_t heading_type;
+        unsigned fms_altitude;  // FMS selected altitude
+        unsigned mcp_altitude;  // MCP/FCU selected altitude
+        float    qnh;           // altimeter setting (QFE or QNH/QNE), millibars
+
+        nav_altitude_source_t altitude_source;
+
+        nav_modes_t modes;
+    } nav;
+};
+
+
+#endif // __DUMP1090_H

firmware/application/apps/ert_app.hpp

@@ -50,6 +50,8 @@ struct ERTKey {
 	{
 	}
 
+	ERTKey( const ERTKey& other ) = default;
+
 	ERTKey& operator=(const ERTKey& other) {
 		id = other.id;
 		commodity_type = other.commodity_type;

firmware/application/apps/pocsag_app.cpp

@@ -30,10 +30,11 @@ using namespace pocsag;
 
 #include "string_format.hpp"
 #include "utility.hpp"
+#include "audio.hpp"
 
 void POCSAGLogger::log_raw_data(const pocsag::POCSAGPacket& packet, const uint32_t frequency) {
 	std::string entry = "Raw: F:" + to_string_dec_uint(frequency) + "Hz " +
-						pocsag::bitrate_str(packet.bitrate()) + " Codewords:";
+						to_string_dec_uint(packet.bitrate()) + " Codewords:";
 	
 	// Raw hex dump of all the codewords
 	for (size_t c = 0; c < 16; c++)
@@ -64,13 +65,13 @@ POCSAGAppView::POCSAGAppView(NavigationView& nav) {
 	add_children({
 		&rssi,
 		&channel,
+		&audio,
 		&field_rf_amp,
 		&field_lna,
 		&field_vga,
 		&field_frequency,
-		&options_bitrate,
-		&options_phase,
 		&check_log,
+		&field_volume,
 		&check_ignore,
 		&sym_ignore,
 		&console
@@ -99,14 +100,11 @@ POCSAGAppView::POCSAGAppView(NavigationView& nav) {
 		logging = v;
 	};
 	
-	options_bitrate.on_change = [this](size_t, OptionsField::value_t v) {
-		on_config_changed(v, options_phase.selected_index_value());
-	};
-	options_bitrate.set_selected_index(1);	// 1200bps
-	
-	options_phase.on_change = [this](size_t, OptionsField::value_t v) {
-		on_config_changed(options_bitrate.selected_index_value(),v);
+	field_volume.set_value((receiver_model.headphone_volume() - audio::headphone::volume_range().max).decibel() + 99);
+	field_volume.on_change = [this](int32_t v) {
+		this->on_headphone_volume_changed(v);
 	};
+
 	check_ignore.set_value(ignore);
 	check_ignore.on_select = [this](Checkbox&, bool v) {
 		ignore = v;
@@ -121,9 +119,16 @@ POCSAGAppView::POCSAGAppView(NavigationView& nav) {
 	logger = std::make_unique<POCSAGLogger>();
 	if (logger)
 		logger->append("pocsag.txt");
+
+	audio::output::start();
+	audio::output::unmute();
+
+	baseband::set_pocsag();
 }
 
 POCSAGAppView::~POCSAGAppView() {	
+	audio::output::stop();
+
 	// Save ignored address
 	persistent_memory::set_pocsag_ignore_address(sym_ignore.value_dec_u32());
 	
@@ -135,6 +140,12 @@ void POCSAGAppView::focus() {
 	field_frequency.focus();
 }
 
+void POCSAGAppView::on_headphone_volume_changed(int32_t v) {
+	const auto new_volume = volume_t::decibel(v - 99) + audio::headphone::volume_range().max;
+	receiver_model.set_headphone_volume(new_volume);
+}
+
+
 // Useless ?
 void POCSAGAppView::set_parent_rect(const Rect new_parent_rect) {
 	View::set_parent_rect(new_parent_rect);
@@ -154,11 +165,17 @@ void POCSAGAppView::on_packet(const POCSAGPacketMessage * message) {
 			//			" Ignored address " + to_string_dec_uint(pocsag_state.address));
 			return;
 		}
+		// Too many errors for reliable decode
+		if ((ignore) && (pocsag_state.errors >= 3)) {
+			return;
+		}
+
 
 		std::string console_info;
-		
+		const uint32_t roundVal = 50;
+		const uint32_t bitrate = roundVal * ((message->packet.bitrate() + (roundVal/2))/roundVal);
 		console_info = "\n" + to_string_datetime(message->packet.timestamp(), HM);
-		console_info += " " + pocsag::bitrate_str(message->packet.bitrate());
+		console_info += " " + to_string_dec_uint(bitrate);
 		console_info += " ADDR:" + to_string_dec_uint(pocsag_state.address);
 		console_info += " F" + to_string_dec_uint(pocsag_state.function);
 
@@ -201,10 +218,6 @@ void POCSAGAppView::on_packet(const POCSAGPacketMessage * message) {
 		logger->log_raw_data(message->packet, target_frequency());
 }
 
-void POCSAGAppView::on_config_changed(const uint32_t new_bitrate, bool new_phase) {
-	baseband::set_pocsag(pocsag_bitrates[new_bitrate], new_phase);
-}
-
 void POCSAGAppView::set_target_frequency(const uint32_t new_value) {
 	target_frequency_ = new_value;
 	receiver_model.set_tuning_frequency(new_value);

firmware/application/apps/pocsag_app.hpp

@@ -61,7 +61,7 @@ private:
 	static constexpr uint32_t initial_target_frequency = 466175000;
 
 	bool logging { true };
-	bool ignore { false };
+	bool ignore { true };
 	uint32_t last_address = 0xFFFFFFFF;
 	pocsag::POCSAGState pocsag_state { };
 
@@ -80,48 +80,41 @@ private:
 	Channel channel {
 		{ 21 * 8, 5, 6 * 8, 4 },
 	};
+	Audio audio{
+		{ 21 * 8, 10, 6 * 8, 4 },
+	};
 	
 	FrequencyField field_frequency {
 		{ 0 * 8, 0 * 8 },
 	};
-	OptionsField options_bitrate {
-		{ 12 * 8, 21 },
-		7,
-		{
-			{ "512bps ", 0 },
-			{ "1200bps", 1 },
-			{ "2400bps", 2 }
-		}
-	};
-	OptionsField options_phase {
-		{ 6 * 8, 21 },
-		1,
-		{
-			{ "P", 0 },
-			{ "N", 1 },
-		}
-	};
 	Checkbox check_log {
-		{ 22 * 8, 21 },
+		{ 24 * 8, 21 },
 		3,
 		"LOG",
 		true
 	};
+	NumberField field_volume{
+		{ 28 * 8, 0 * 16 },
+		2,
+		{ 0, 99 },
+		1,
+		' ',
+	};
 	
 	Checkbox check_ignore {
-		{ 1 * 8, 40 },
-		15,
-		"Ignore address:",
+		{ 1 * 8, 21 },
+		12,
+		"Ignore addr:",
 		true
 	};
 	SymField sym_ignore {
-		{ 19 * 8, 40 },
+		{ 16 * 8, 21 },
 		7,
 		SymField::SYMFIELD_DEC
 	};
 
 	Console console {
-		{ 0, 4 * 16, 240, 240 }
+		{ 0, 3 * 16, 240, 256 }
 	};
 
 	std::unique_ptr<POCSAGLogger> logger { };
@@ -132,7 +125,7 @@ private:
 
 	void on_packet(const POCSAGPacketMessage * message);
 
-	void on_config_changed(const uint32_t new_bitrate, const bool phase);
+	void on_headphone_volume_changed(int32_t v);
 
 	uint32_t target_frequency() const;
 	void set_target_frequency(const uint32_t new_value);

firmware/application/apps/replay_app.cpp

@@ -139,7 +139,12 @@ void ReplayAppView::start() {
 			}
 		);
 	}
-	
+    field_rfgain.on_change = [this](int32_t v) {
+		tx_gain = v;
+	};  
+	field_rfgain.set_value(tx_gain);
+	receiver_model.set_tx_gain(tx_gain); 
+    
 	radio::enable({
 		receiver_model.tuning_frequency(),
 		sample_rate * 8 ,
@@ -180,6 +185,8 @@ ReplayAppView::ReplayAppView(
 	NavigationView& nav
 ) : nav_ (nav)
 {
+
+	tx_gain = 35;field_rfgain.set_value(tx_gain);
 	baseband::run_image(portapack::spi_flash::image_tag_replay);
 
 	add_children({
@@ -190,7 +197,7 @@ ReplayAppView::ReplayAppView(
 		&text_duration,
 		&progressbar,
 		&field_frequency,
-		&field_lna,
+		&field_rfgain, 
 		&field_rf_amp,
 		&check_loop,
 		&button_play,

firmware/application/apps/replay_app.hpp

@@ -51,6 +51,7 @@ private:
 	static constexpr ui::Dim header_height = 3 * 16;
 	
 	uint32_t sample_rate = 0;
+	int32_t tx_gain { 47 };
 	static constexpr uint32_t baseband_bandwidth = 2500000;
 	const size_t read_size { 16384 };
 	const size_t buffer_count { 3 };
@@ -75,7 +76,7 @@ private:
 	bool ready_signal { false };
 
 	Labels labels {
-		{ { 10 * 8, 2 * 16 }, "LNA:   A:", Color::light_grey() }
+		{ { 10 * 8, 2 * 16 }, "GAIN   A:", Color::light_grey() }
 	};
 	
 	Button button_open {
@@ -103,8 +104,13 @@ private:
 	FrequencyField field_frequency {
 		{ 0 * 8, 2 * 16 },
 	};
-	LNAGainField field_lna {
-		{ 14 * 8, 2 * 16 }
+	
+	NumberField field_rfgain {
+		{ 14 * 8, 2 * 16 },
+		2,
+		{ 0, 47 },
+		1,
+		' '	
 	};
 	RFAmpField field_rf_amp {
 		{ 19 * 8, 2 * 16 }

firmware/application/apps/soundboard_app.cpp

@@ -110,7 +110,11 @@ void SoundBoardView::start_tx(const uint32_t id) {
 		1536000 / 20,		// Update vu-meter at 20Hz
 		transmitter_model.channel_bandwidth(),
 		0,	// Gain is unused
-		TONES_F2D(tone_key_frequency(tone_key_index), 1536000)
+		TONES_F2D(tone_key_frequency(tone_key_index), 1536000),
+		0, //AM
+		0, //DSB
+		0, //USB
+		0 //LSB
 	);
 	baseband::set_sample_rate(sample_rate);
 	
@@ -130,6 +134,7 @@ void SoundBoardView::start_tx(const uint32_t id) {
 }*/
 
 void SoundBoardView::on_tx_progress(const uint32_t progress) {
+	(void)progress ; // avoid warning
 	//progressbar.set_value(progress);
 }
 

firmware/application/apps/ui_about_simple.cpp

@@ -6,7 +6,8 @@ namespace ui
     {
         add_children({&console, &button_ok});
 
-        button_ok.on_select = [&nav](Button &) {
+        button_ok.on_select = [&nav](Button &)
+        {
             nav.pop();
         };
 
@@ -28,9 +29,14 @@ namespace ui
                 console.writeln("\x1B\x06Mayhem:\x1B\x10");
                 console.writeln("eried,euquiq,gregoryfenton");
                 console.writeln("johnelder,jwetzell,nnemanjan00");
-                console.writeln("N0vaPixel,klockee,jamesshao8");
-                console.writeln("ITAxReal,rascafr,mcules");
-                console.writeln("dqs105,strijar");
+                console.writeln("N0vaPixel,klockee,GullCode");
+                console.writeln("jamesshao8,ITAxReal,rascafr");
+                console.writeln("mcules,dqs105,strijar");
+                console.writeln("zhang00963,RedFox-Fr,aldude999");
+                console.writeln("East2West,fossum,ArjanOnwezen");
+                console.writeln("vXxOinvizioNxX,teixeluis");
+                console.writeln("Brumi-2021,texasyojimbo");
+                console.writeln("heurist1,intoxsick");
                 console.writeln("");
                 break;
 
@@ -74,4 +80,4 @@ namespace ui
         button_ok.focus();
     }
 
-} /* namespace ui */
+} /* namespace ui */

firmware/application/apps/ui_adsb_rx.cpp

@@ -20,6 +20,8 @@
  * Boston, MA 02110-1301, USA.
  */
 
+#include <strings.h>
+
 #include "ui_adsb_rx.hpp"
 #include "ui_alphanum.hpp"
 
@@ -47,7 +49,7 @@ void RecentEntriesTable<AircraftRecentEntries>::draw(
 	if (entry_age < ADSB_DECAY_A) {
 		aged_color = 0x10;
 		target_color = Color::green();
-	} else if ((entry_age >= ADSB_DECAY_A) && (entry_age < ADSB_DECAY_B)) {
+	} else if (entry_age < ADSB_DECAY_B) {
 		aged_color = 0x07;
 		target_color = Color::light_grey();
 	} else {
@@ -57,10 +59,21 @@ void RecentEntriesTable<AircraftRecentEntries>::draw(
 	
 	std::string entry_string = "\x1B";
 	entry_string += aged_color;
+#if false
 	entry_string += to_string_hex(entry.ICAO_address, 6) + " " +
 		entry.callsign + "  " +
 		(entry.hits <= 999 ? to_string_dec_uint(entry.hits, 4) : "999+") + " " + 
 		entry.time_string;
+#else
+	// SBT
+	entry_string += 
+		(entry.callsign[0]!=' ' ? entry.callsign + " " : to_string_hex(entry.ICAO_address, 6) + "   ") +
+		to_string_dec_uint((unsigned int)((entry.pos.altitude+50)/100),4) +
+		to_string_dec_uint((unsigned int)entry.velo.speed,4) +
+		to_string_dec_uint((unsigned int)(entry.amp>>9),4) + " " +
+		(entry.hits <= 999 ? to_string_dec_uint(entry.hits, 3) + " " : "1k+ ") +
+		to_string_dec_uint(entry.age, 3);
+#endif
 	
 	painter.draw_string(
 		target_rect.location(),
@@ -69,7 +82,7 @@ void RecentEntriesTable<AircraftRecentEntries>::draw(
 	);
 	
 	if (entry.pos.valid)
-		painter.draw_bitmap(target_rect.location() + Point(15 * 8, 0), bitmap_target, target_color, style.background);
+		painter.draw_bitmap(target_rect.location() + Point(8 * 8, 0), bitmap_target, target_color, style.background);
 }
 
 void ADSBLogger::log_str(std::string& logline) {
@@ -117,6 +130,7 @@ ADSBRxDetailsView::ADSBRxDetailsView(
 {
 	char file_buffer[32] { 0 };
 	bool found = false;
+	int number_of_airlines = 0;	
 	std::string airline_code;
 	size_t c;
 	
@@ -140,7 +154,8 @@ ADSBRxDetailsView::ADSBRxDetailsView(
 	// Try getting the airline's name from airlines.db
 	auto result = db_file.open("ADSB/airlines.db");
 	if (!result.is_valid()) {
-		// Search for 3-letter code in 0x0000~0x2000
+		// Search for 3-letter code
+		number_of_airlines = (db_file.size() / 68); // determine number of airlines in file
 		airline_code = entry_copy.callsign.substr(0, 3);
 		c = 0;
 		do {
@@ -151,10 +166,10 @@ ADSBRxDetailsView::ADSBRxDetailsView(
 				found = true;
 			else
 				c++;
-		} while (!found);
+		} while (!found && (c < number_of_airlines));
 		
 		if (found) {
-			db_file.seek(0x2000 + (c << 6));
+			db_file.seek((number_of_airlines * 4) + (c << 6)); // seek starting after index
 			db_file.read(file_buffer, 32);
 			text_airline.set(file_buffer);
 			db_file.read(file_buffer, 32);
@@ -171,17 +186,19 @@ ADSBRxDetailsView::ADSBRxDetailsView(
 	text_callsign.set(entry_copy.callsign);
 	
 	button_see_map.on_select = [this, &nav](Button&) {
-		geomap_view = nav.push<GeoMapView>(
-			entry_copy.callsign,
-			entry_copy.pos.altitude,
-			GeoPos::alt_unit::FEET,
-			entry_copy.pos.latitude,
-			entry_copy.pos.longitude,
-			entry_copy.velo.heading,
-			[this]() {
+		if (!send_updates) { // Prevent recursivley launching the map
+			geomap_view = nav.push<GeoMapView>(
+				entry_copy.callsign,
+				entry_copy.pos.altitude,
+				GeoPos::alt_unit::FEET,
+				entry_copy.pos.latitude,
+				entry_copy.pos.longitude,
+				entry_copy.velo.heading,
+				[this]() {
 				send_updates = false;
 			});
-		send_updates = true;
+			send_updates = true;
+		}
 	};
 };
 
@@ -190,11 +207,41 @@ void ADSBRxView::focus() {
 }
 
 ADSBRxView::~ADSBRxView() {
+	receiver_model.set_tuning_frequency(prevFreq);
+
 	rtc_time::signal_tick_second -= signal_token_tick_second;
 	receiver_model.disable();
 	baseband::shutdown();
 }
 
+AircraftRecentEntry ADSBRxView::find_or_create_entry(uint32_t ICAO_address) {
+	auto it = find(recent, ICAO_address);
+
+	// If not found
+	if (it == std::end(recent)){
+		recent.emplace_front(ICAO_address); // Add it
+		truncate_entries(recent); // Truncate the list
+		sort_entries_by_state();
+		it = find(recent, ICAO_address); // Find it again
+	}
+	return *it;
+}
+
+void ADSBRxView::replace_entry(AircraftRecentEntry & entry)
+{
+	uint32_t ICAO_address = entry.ICAO_address;
+
+	std::replace_if( recent.begin(), recent.end(), 
+		[ICAO_address](const AircraftRecentEntry & compEntry) {return ICAO_address == compEntry.ICAO_address;},
+		entry);
+}
+
+void ADSBRxView::sort_entries_by_state()
+{
+	// Sorting List pn age_state using lambda function as comparator
+	recent.sort([](const AircraftRecentEntry & left, const AircraftRecentEntry & right){return (left.age_state < right.age_state); });
+}
+
 void ADSBRxView::on_frame(const ADSBFrameMessage * message) {
 	rtc::RTC datetime;
 	std::string str_timestamp;
@@ -205,11 +252,17 @@ void ADSBRxView::on_frame(const ADSBFrameMessage * message) {
 	auto frame = message->frame;
 	uint32_t ICAO_address = frame.get_ICAO_address();
 
-	if (frame.check_CRC() && frame.get_ICAO_address()) {
+	if (frame.check_CRC() && ICAO_address) {
 		rtcGetTime(&RTCD1, &datetime);
-		auto& entry = ::on_packet(recent, ICAO_address);
+		auto entry = find_or_create_entry(ICAO_address);
 		frame.set_rx_timestamp(datetime.minute() * 60 + datetime.second());
 		entry.reset_age();
+		if (entry.hits==0)
+		{ 
+			entry.amp = message->amp;
+		} else {
+			entry.amp = ((entry.amp*15)+message->amp)>>4;
+		}
 		str_timestamp = to_string_datetime(datetime, HMS);
 		entry.set_time_string(str_timestamp);
 
@@ -222,36 +275,47 @@ void ADSBRxView::on_frame(const ADSBFrameMessage * message) {
 			uint8_t msg_sub = frame.get_msg_sub();
 			uint8_t * raw_data = frame.get_raw_data();
 			
-			if ((msg_type >= 1) && (msg_type <= 4)) {
+			// 4: // surveillance, altitude reply
+			if ((msg_type >= AIRCRAFT_ID_L) && (msg_type <= AIRCRAFT_ID_H)) {
 				callsign = decode_frame_id(frame);
 				entry.set_callsign(callsign);
 				logentry+=callsign+" ";
-			} else if (((msg_type >= 9) && (msg_type <= 18)) || ((msg_type >= 20) && (msg_type <= 22))) {
+			} 
+			// 9:
+			// 18: { // Extended squitter/non-transponder
+			// 21: // Comm-B, identity reply
+			// 20: // Comm-B, altitude reply
+			else if (((msg_type >= AIRBORNE_POS_BARO_L) && (msg_type <= AIRBORNE_POS_BARO_H)) || 
+				((msg_type >= AIRBORNE_POS_GPS_L) && (msg_type <= AIRBORNE_POS_GPS_H))) {
 				entry.set_frame_pos(frame, raw_data[6] & 4);
 				
 				if (entry.pos.valid) {
 					str_info = "Alt:" + to_string_dec_int(entry.pos.altitude) +
-						" Lat:" + to_string_dec_int(entry.pos.latitude) +
-						"." + to_string_dec_int((int)abs(entry.pos.latitude * 1000) % 100, 2, '0') +
-						" Lon:" + to_string_dec_int(entry.pos.longitude) +
-						"." + to_string_dec_int((int)abs(entry.pos.longitude * 1000) % 100, 2, '0');
-					
-					entry.set_info_string(str_info);
-					logentry+=str_info+ " ";
+						" Lat:" + to_string_decimal(entry.pos.latitude, 2) +
+						" Lon:" + to_string_decimal(entry.pos.longitude, 2);
+
+					// printing the coordinates in the log file with more
+					// resolution, as we are not constrained by screen 
+					// real estate there:
+
+					std::string log_info = "Alt:" + to_string_dec_int(entry.pos.altitude) +
+						" Lat:" + to_string_decimal(entry.pos.latitude, 7) +
+						" Lon:" + to_string_decimal(entry.pos.longitude, 7);
+
+					entry.set_info_string(str_info);
+					logentry+=log_info + " ";
 
-					if (send_updates)
-						details_view->update(entry);
 				}
-			} else if(msg_type == 19 && msg_sub >= 1 && msg_sub <= 4){
+			} else if(msg_type == AIRBORNE_VEL && msg_sub >= VEL_GND_SUBSONIC && msg_sub <= VEL_AIR_SUPERSONIC){
 				entry.set_frame_velo(frame);
 				logentry += "Type:" + to_string_dec_uint(msg_sub) +
 							" Hdg:" + to_string_dec_uint(entry.velo.heading) +
 							" Spd: "+ to_string_dec_int(entry.velo.speed);
-				if (send_updates)
-					details_view->update(entry);
+
 			}
 		}
-		recent_entries_view.set_dirty(); 
+
+		replace_entry(entry);
 		
 		logger = std::make_unique<ADSBLogger>();
         if (logger) {
@@ -269,13 +333,16 @@ void ADSBRxView::on_tick_second() {
 		entry.inc_age();
 		
 		if (details_view) {
-			if (send_updates && (entry.key() == detailed_entry_key))
+			if (send_updates && (entry.key() == detailed_entry_key)) // Check if the ICAO address match
 				details_view->update(entry);
-		} else {
-			if ((entry.age == ADSB_DECAY_A) || (entry.age == ADSB_DECAY_B))
-				recent_entries_view.set_dirty();
 		}
 	}
+
+	// Sort the list if it is being displayed
+	if (!send_updates) {
+		sort_entries_by_state();
+		recent_entries_view.set_dirty();
+	}
 }
 
 ADSBRxView::ADSBRxView(NavigationView& nav) {
@@ -304,6 +371,8 @@ ADSBRxView::ADSBRxView(NavigationView& nav) {
 		on_tick_second();
 	};
 	
+	prevFreq = receiver_model.tuning_frequency();
+
 	baseband::set_adsb();
 	
 	receiver_model.set_tuning_frequency(1090000000);

firmware/application/apps/ui_adsb_rx.hpp

@@ -32,13 +32,39 @@
 #include "adsb.hpp"
 #include "message.hpp"
 
+#include "crc.hpp"
+
 using namespace adsb;
 
 namespace ui {
 
-#define ADSB_DECAY_A 10		// In seconds
-#define ADSB_DECAY_B 30
-#define ADSB_DECAY_C 60		// Can be used for removing old entries, RecentEntries already caps to 64
+#define ADSB_DECAY_A 		10		// In seconds
+#define ADSB_DECAY_B 		30
+#define ADSB_DECAY_C 		60		// Can be used for removing old entries, RecentEntries already caps to 64
+
+#define AIRCRAFT_ID_L		1		// aircraft ID message type (lowest type id)
+#define AIRCRAFT_ID_H		4		// aircraft ID message type (highest type id)
+
+#define SURFACE_POS_L		5		// surface position (lowest type id)
+#define SURFACE_POS_H		8		// surface position (highest type id)
+
+#define AIRBORNE_POS_BARO_L	9		// airborne position (lowest type id)
+#define AIRBORNE_POS_BARO_H	18		// airborne position (highest type id)
+
+#define AIRBORNE_VEL		19		// airborne velocities
+
+#define AIRBORNE_POS_GPS_L	20		// airborne position (lowest type id)
+#define AIRBORNE_POS_GPS_H	22		// airborne position (highest type id)
+
+#define RESERVED_L			23		// reserved for other uses
+#define RESERVED_H			31		// reserved for other uses
+
+#define VEL_GND_SUBSONIC		1
+#define VEL_GND_SUPERSONIC		2
+#define VEL_AIR_SUBSONIC		3
+#define VEL_AIR_SUPERSONIC		4
+
+#define O_E_FRAME_TIMEOUT		20	// timeout between odd and even frames
 
 struct AircraftRecentEntry {
 	using Key = uint32_t;
@@ -47,9 +73,12 @@ struct AircraftRecentEntry {
 	
 	uint32_t ICAO_address { };
 	uint16_t hits { 0 };
+	
+	uint16_t age_state { 1 };
 	uint32_t age { 0 };
+	uint32_t amp { 0 };
 	adsb_pos pos { false, 0, 0, 0 };
-	adsb_vel velo { false, 0, 999 };
+	adsb_vel velo { false, 0, 999, 0 };
 	ADSBFrame frame_pos_even { };
 	ADSBFrame frame_pos_odd { };
 	
@@ -82,7 +111,7 @@ struct AircraftRecentEntry {
 			frame_pos_odd = frame;
 		
 		if (!frame_pos_even.empty() && !frame_pos_odd.empty()) {
-			if (abs(frame_pos_even.get_rx_timestamp() - frame_pos_odd.get_rx_timestamp()) < 20)
+			if (abs(frame_pos_even.get_rx_timestamp() - frame_pos_odd.get_rx_timestamp()) < O_E_FRAME_TIMEOUT)
 				pos = decode_frame_pos(frame_pos_even, frame_pos_odd);
 		}
 	}
@@ -98,13 +127,21 @@ struct AircraftRecentEntry {
 	void set_time_string(std::string& new_time_string) {
 		time_string = new_time_string;
 	}
-	
+
 	void reset_age() {
 		age = 0;
 	}
 	
 	void inc_age() {
 		age++;
+		if (age < ADSB_DECAY_A)
+		{
+			age_state = pos.valid ? 0 : 1;
+		}
+		else
+		{
+			age_state = (age < ADSB_DECAY_B) ? 2 : 3;
+		}
 	}
 };
 
@@ -137,6 +174,8 @@ public:
 	void update(const AircraftRecentEntry& entry);
 	
 	std::string title() const override { return "Details"; };
+
+	AircraftRecentEntry get_current_entry() { return entry_copy; }
 	
 private:
 	AircraftRecentEntry entry_copy { 0 };
@@ -213,16 +252,30 @@ public:
 	
 	std::string title() const override { return "ADS-B receive"; };
 
+	void replace_entry(AircraftRecentEntry & entry);
+	AircraftRecentEntry find_or_create_entry(uint32_t ICAO_address);
+	void sort_entries_by_state();
+
 private:
+	rf::Frequency prevFreq;
 	std::unique_ptr<ADSBLogger> logger { };
 	void on_frame(const ADSBFrameMessage * message);
 	void on_tick_second();
 	
 	const RecentEntriesColumns columns { {
+#if false
 		{ "ICAO", 6 },
 		{ "Callsign", 9 },
 		{ "Hits", 4 },
 		{ "Time", 8 }
+#else
+		{ "ICAO/Call", 9 },
+		{ "Lvl", 3 },
+		{ "Spd", 3 },
+		{ "Amp", 3 },
+		{ "Hit", 3 },
+		{ "Age", 3 }
+#endif
 	} };
 	AircraftRecentEntries recent { };
 	RecentEntriesView<RecentEntries<AircraftRecentEntry>> recent_entries_view { columns, recent };

firmware/application/apps/ui_aprs_rx.cpp

@@ -0,0 +1,409 @@
+/*
+ * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2017 Furrtek
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "ui_aprs_rx.hpp"
+
+#include "audio.hpp"
+#include "rtc_time.hpp"
+#include "baseband_api.hpp"
+#include "string_format.hpp"
+#include "portapack_persistent_memory.hpp"
+
+using namespace portapack;
+
+void APRSLogger::log_raw_data(const std::string& data) {
+	rtc::RTC datetime;
+	rtcGetTime(&RTCD1, &datetime);
+	
+	log_file.write_entry(datetime, data);
+}
+
+namespace ui {
+
+template<>
+void RecentEntriesTable<APRSRecentEntries>::draw(
+	const Entry& entry,
+	const Rect& target_rect,
+	Painter& painter,
+	const Style& style
+) {
+	char aged_color;
+	Color target_color;
+	// auto entry_age = entry.age;
+	
+	target_color = Color::green();
+
+	aged_color = 0x10;
+	std::string entry_string = "\x1B";
+	entry_string += aged_color;
+	
+	entry_string += entry.source_formatted;
+	entry_string.append(10 - entry.source_formatted.size(),' ');
+	entry_string += "       ";
+	entry_string += (entry.hits <= 999 ? to_string_dec_uint(entry.hits, 4) : "999+");
+	entry_string += " ";
+	entry_string += entry.time_string;
+	
+	painter.draw_string(
+		target_rect.location(),
+		style,
+		entry_string
+	);
+	
+	if (entry.has_position){
+		painter.draw_bitmap(target_rect.location() + Point(12 * 8, 0), bitmap_target, target_color, style.background);
+	}
+}
+
+
+void APRSRxView::focus() {
+	options_region.focus();
+}
+
+void APRSRxView::update_freq(rf::Frequency f) {
+	receiver_model.set_tuning_frequency(f);
+}
+
+APRSRxView::APRSRxView(NavigationView& nav, Rect parent_rect) : View(parent_rect) {
+	baseband::run_image(portapack::spi_flash::image_tag_aprs_rx);
+	
+	add_children({
+		&rssi,
+		&channel,
+		&field_rf_amp,
+		&field_lna,
+		&field_vga,
+		&options_region,
+		&field_frequency,
+		&record_view,
+		&console
+	});
+	
+	// DEBUG
+	record_view.on_error = [&nav](std::string message) {
+		nav.display_modal("Error", message);
+	};
+
+	record_view.set_sampling_rate(24000);
+
+	options_region.on_change = [this](size_t, int32_t i) {		
+		if (i == 0){
+			field_frequency.set_value(144390000);			
+		}
+		if(i == 1){
+			field_frequency.set_value(144800000);
+		}
+		if(i == 2){
+			field_frequency.set_value(145175000);
+		}		
+	};
+	
+	field_frequency.set_value(receiver_model.tuning_frequency());
+	field_frequency.set_step(100);
+	field_frequency.on_change = [this](rf::Frequency f) {
+		update_freq(f);
+	};
+	field_frequency.on_edit = [this, &nav]() {
+		auto new_view = nav.push<FrequencyKeypadView>(receiver_model.tuning_frequency());
+		new_view->on_changed = [this](rf::Frequency f) {
+			update_freq(f);
+			field_frequency.set_value(f);
+		};
+	};
+	
+	options_region.set_selected_index(0, true);
+	
+	logger = std::make_unique<APRSLogger>();
+	if (logger)
+		logger->append("APRS_RX_LOG.TXT");
+	
+	baseband::set_aprs(1200);
+	
+	audio::set_rate(audio::Rate::Hz_24000);
+	audio::output::start();
+	
+	receiver_model.set_sampling_rate(3072000);
+	receiver_model.set_baseband_bandwidth(1750000);
+	receiver_model.set_modulation(ReceiverModel::Mode::NarrowbandFMAudio);
+	receiver_model.enable();
+}
+
+void APRSRxView::on_packet(const APRSPacketMessage* message){
+	std::string str_console = "\x1B";
+
+	aprs::APRSPacket packet = message->packet;
+
+	std::string stream_text = packet.get_stream_text();
+	str_console += (char)((console_color++ & 3) + 9);		
+	str_console += stream_text;
+
+	if(logger){
+		logger->log_raw_data(stream_text);
+	}
+	
+	//if(reset_console){ //having more than one console causes issues when switching tabs where one is disabled, and the other enabled breaking the scoll setup.
+	//	console.on_hide();
+	//	console.on_show();
+	//	reset_console = false;
+	//}
+
+	console.writeln(str_console);
+}
+
+void APRSRxView::on_data(uint32_t value, bool is_data) {
+	std::string str_console = "\x1B";
+	std::string str_byte = "";
+	
+	if (is_data) {
+		// Colorize differently after message splits
+		str_console += (char)((console_color & 3) + 9);		
+
+		if (value == '\n') {
+			// Message split
+			console.writeln("");
+			console_color++;
+			
+			if (logger) {
+				logger->log_raw_data(str_log);
+				str_log = "";
+			}
+		}
+		else {
+			if ((value >= 32) && (value < 127)) {
+				str_console += (char)value;							// Printable
+				str_byte += (char)value;
+			} else {
+				str_console += "[" + to_string_hex(value, 2) + "]";	// Not printable
+				str_byte += "[" + to_string_hex(value, 2) + "]";
+			}
+
+			console.write(str_console);
+		
+			if (logger) str_log += str_byte;
+		}
+	} else {
+
+	}
+}
+
+void APRSRxView::on_show(){
+	//some bug where the display scroll area is set to the entire screen when switching from the list tab with details showing back to the stream view.
+	//reset_console = true;	
+}
+
+APRSRxView::~APRSRxView() {
+	audio::output::stop();
+	receiver_model.disable();
+	baseband::shutdown();
+}
+
+void APRSTableView::on_show_list() {
+	details_view.hidden(true);
+	recent_entries_view.hidden(false);	
+	send_updates = false;
+	focus();
+}
+
+void APRSTableView::on_show_detail(const APRSRecentEntry& entry) {
+	recent_entries_view.hidden(true);
+	details_view.hidden(false);
+	details_view.set_entry(entry);
+	details_view.update();
+	details_view.focus();
+	detailed_entry_key = entry.key();
+	send_updates = true;
+}
+
+APRSTableView::APRSTableView(NavigationView& nav, Rect parent_rec) : View(parent_rec),  nav_ {nav}  {
+	add_children({		
+		&recent_entries_view,
+		&details_view
+	});
+
+	hidden(true);
+
+	details_view.hidden(true);
+	
+	recent_entries_view.set_parent_rect({0, 0, 240, 280});
+	details_view.set_parent_rect({0, 0, 240, 280});
+	
+	recent_entries_view.on_select = [this](const APRSRecentEntry& entry) {
+		this->on_show_detail(entry);
+	};
+
+	details_view.on_close = [this]() {
+		this->on_show_list();
+	};
+
+
+/*	for(size_t i = 0; i <32 ; i++){
+		std::string id = "test" + i;
+		auto& entry = ::on_packet(recent, i);			
+		entry.set_source_formatted(id);	
+	}
+
+	recent_entries_view.set_dirty(); 	*/
+
+	/*
+
+	std::string str1 = "test1";
+	std::string str12 = "test2";
+	std::string str13 = "test2";
+
+	auto& entry = ::on_packet(recent, 0x1);			
+	entry.set_source_formatted(str1);	
+
+	auto& entry2 = ::on_packet(recent, 0x2);			
+	entry2.set_source_formatted(str12);	
+
+	auto& entry3 = ::on_packet(recent, 0x2);			
+	entry2.set_source_formatted(str13);	
+
+	recent_entries_view.set_dirty(); 	
+
+	*/
+}
+
+void APRSTableView::on_pkt(const APRSPacketMessage* message){
+	aprs::APRSPacket packet = message->packet;
+	rtc::RTC datetime;	
+	std::string str_timestamp;
+	std::string source_formatted = packet.get_source_formatted();
+	std::string info_string = packet.get_stream_text();
+
+	rtcGetTime(&RTCD1, &datetime);
+	auto& entry = ::on_packet(recent, packet.get_source());		
+	entry.reset_age();
+	entry.inc_hit();
+	str_timestamp = to_string_datetime(datetime, HMS);
+	entry.set_time_string(str_timestamp);
+	entry.set_info_string(info_string);
+
+	entry.set_source_formatted(source_formatted);
+
+	if(entry.has_position && !packet.has_position()){ 
+		//maintain position info
+	}
+	else {
+		entry.set_has_position(packet.has_position());
+		entry.set_pos(packet.get_position());
+	}	
+
+	if( entry.key() == details_view.entry().key() ) {
+		details_view.set_entry(entry);
+		details_view.update();		
+	}
+
+	recent_entries_view.set_dirty(); 			
+}
+
+void APRSTableView::on_show(){
+	on_show_list();
+}
+
+void APRSTableView::on_hide(){
+	details_view.hidden(true);
+}
+
+void APRSTableView::focus(){
+	recent_entries_view.focus();
+}
+
+APRSTableView::~APRSTableView(){
+
+}
+
+void APRSDetailsView::focus() {
+	button_done.focus();
+}
+
+void APRSDetailsView::set_entry(const APRSRecentEntry& entry){
+	entry_copy = entry;
+}
+
+void APRSDetailsView::update() {	
+	if(!hidden()){		
+		//uint32_t age = entry_copy.age;
+		
+		console.clear(true);
+		console.write(entry_copy.info_string);
+
+		button_see_map.hidden(!entry_copy.has_position);
+	}	
+	
+	if (send_updates)
+		geomap_view->update_position(entry_copy.pos.latitude, entry_copy.pos.longitude, 0);
+}
+
+APRSDetailsView::~APRSDetailsView() {
+}
+
+APRSDetailsView::APRSDetailsView(
+	NavigationView& nav	
+) 
+{	
+	add_children({
+		&console,
+		&button_done,
+		&button_see_map
+	});
+
+	button_done.on_select = [this, &nav](Button&) {
+		console.clear(true);
+		this->on_close();
+	};
+
+	button_see_map.on_select = [this, &nav](Button&) {
+		geomap_view = nav.push<GeoMapView>(
+			entry_copy.source_formatted,			
+			0, //entry_copy.pos.altitude,
+			GeoPos::alt_unit::FEET,
+			entry_copy.pos.latitude,
+			entry_copy.pos.longitude,			
+			0, /*entry_copy.velo.heading,*/
+			[this]() {
+				send_updates = false;
+				hidden(false);
+				update();
+			});		
+		send_updates = true;
+		hidden(true);
+		
+	};
+};
+
+APRSRXView::APRSRXView(NavigationView& nav) : nav_ {nav} {
+	add_children({
+		&tab_view,
+		&view_stream,
+		&view_table
+	});
+}
+
+void APRSRXView::focus(){
+	tab_view.focus();
+}
+
+APRSRXView::~APRSRXView() {
+	
+}
+} /* namespace ui */

firmware/application/apps/ui_aprs_rx.hpp

@@ -0,0 +1,276 @@
+/*
+ * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2017 Furrtek
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __UI_APRS_RX_H__
+#define __UI_APRS_RX_H__
+
+#include "ui.hpp"
+#include "ui_navigation.hpp"
+#include "ui_receiver.hpp"
+#include "ui_record_view.hpp"	// DEBUG
+#include "ui_geomap.hpp"
+
+#include "recent_entries.hpp"
+#include "ui_tabview.hpp"
+
+#include "log_file.hpp"
+#include "utility.hpp"
+
+class APRSLogger {
+public:
+	Optional<File::Error> append(const std::string& filename) {
+		return log_file.append(filename);
+	}
+	
+	void log_raw_data(const std::string& data);
+
+private:
+	LogFile log_file { };
+};
+
+namespace ui {
+
+struct APRSRecentEntry {
+	using Key = uint64_t;
+	
+	static constexpr Key invalid_key = 0xffffffffffffffff;
+	
+	uint16_t hits { 0 };
+	uint32_t age { 0 };	
+	
+	uint64_t source;
+	std::string source_formatted { "        " };
+	std::string time_string { "" };
+	std::string info_string { "" };
+	
+	aprs::aprs_pos pos;
+	bool has_position = false;
+	APRSRecentEntry(uint64_t src)
+	{
+		source = src;
+	}
+
+	Key key() const {
+		return source;
+	}
+	
+	void set_source_formatted(std::string& new_source) {
+		source_formatted = new_source;
+	}
+	
+	void inc_hit() {
+		hits++;
+	}
+	
+	void set_info_string(std::string& new_info_string) {
+		info_string = new_info_string;
+	}
+	
+	void set_time_string(std::string& new_time_string) {
+		time_string = new_time_string;
+	}
+
+	void set_pos(aprs::aprs_pos pos_in){
+		pos = pos_in;
+	}
+	
+	void set_has_position(bool has_pos){
+		has_position = has_pos;
+	}
+
+	void reset_age() {
+		age = 0;
+	}
+	
+	void inc_age() {
+		age++;
+	}
+};
+
+class APRSDetailsView : public View {
+public:
+	APRSDetailsView(NavigationView&);
+	~APRSDetailsView();
+
+	APRSDetailsView(const APRSDetailsView&) = delete;
+	APRSDetailsView(APRSDetailsView&&) = delete;
+	APRSDetailsView& operator=(const APRSDetailsView&) = delete;
+	APRSDetailsView& operator=(APRSDetailsView&&) = delete;
+	
+	void focus() override;
+	
+	void update();			
+	void set_entry(const APRSRecentEntry& entry);
+
+	const APRSRecentEntry& entry() const { return entry_copy; };
+
+	std::string title() const override { return "Details"; };
+	std::function<void(void)> on_close { };
+	
+private:
+	APRSRecentEntry entry_copy { 0 };	
+	GeoMapView* geomap_view { nullptr };
+	bool send_updates { false };
+	
+	Console console {
+		{ 0, 0 * 16, 240, 224 }		
+	};
+
+	Button button_done {
+		{ 160, 14 * 16, 8 * 8, 3 * 16 },
+		"Close"
+	};
+	
+	Button button_see_map {
+		{ 80, 14 * 16, 8 * 8, 3 * 16 },
+		"Map"
+	};
+};
+
+using APRSRecentEntries = RecentEntries<APRSRecentEntry>;
+
+class APRSTableView: public View {
+public:
+	APRSTableView(NavigationView& nav, Rect parent_rec);
+	~APRSTableView();
+
+	void on_show() override;
+	void on_hide() override;
+	void focus() override;
+	void on_pkt(const APRSPacketMessage* message);
+
+	std::string title() const override { return "Stations"; };
+private:
+	NavigationView& nav_;
+	const RecentEntriesColumns columns { {
+		{ "Source", 9 },
+		{ "Loc", 6 },
+		{ "Hits", 4 },
+		{ "Time", 8 }
+	} };
+	APRSRecentEntries recent { };
+	RecentEntriesView<RecentEntries<APRSRecentEntry>> recent_entries_view { columns, recent };
+	APRSDetailsView details_view { nav_ };
+	uint32_t detailed_entry_key { 0 };
+	bool send_updates { false };
+
+	void on_show_list();
+	void on_show_detail(const APRSRecentEntry& entry);
+};
+
+class APRSRxView : public View {
+public:
+	APRSRxView(NavigationView& nav, Rect parent_rect);
+	~APRSRxView();
+
+	void on_show() override;
+	void focus() override;
+
+	std::string title() const override { return "APRS RX"; };
+	void on_packet(const APRSPacketMessage* message);
+	
+private:
+	void on_data(uint32_t value, bool is_data);
+	bool reset_console = false;
+	
+	uint8_t console_color { 0 };
+	std::string str_log { "" };
+
+	RFAmpField field_rf_amp {
+		{ 13 * 8, 0 * 16 }
+	};
+	LNAGainField field_lna {
+		{ 15 * 8, 0 * 16 }
+	};
+	VGAGainField field_vga {
+		{ 18 * 8, 0 * 16 }
+	};
+	RSSI rssi {
+		{ 21 * 8, 0, 6 * 8, 4 },
+	};
+	Channel channel {
+		{ 21 * 8, 5, 6 * 8, 4 },
+	};
+
+	OptionsField options_region {
+		{ 0 * 8, 0 * 8 },
+		3,
+		{
+			{ "NA ", 0 },
+			{ "EUR", 1 },
+			{ "AUS", 2 }
+		}
+	};
+	
+	FrequencyField field_frequency {
+		{ 3 * 8, 0 * 16 },
+	};
+	
+	// DEBUG
+	RecordView record_view {
+		{ 0 * 8, 1 * 16, 30 * 8, 1 * 16 },
+		u"AFS_????", RecordView::FileType::WAV, 4096, 4
+	};
+	
+	Console console {
+		{ 0, 2 * 16, 240, 240 }
+	};
+
+	void update_freq(rf::Frequency f);
+	
+	std::unique_ptr<APRSLogger> logger { };
+};
+
+class APRSRXView : public View {
+public:
+	APRSRXView(NavigationView& nav);
+	~APRSRXView();
+
+	void focus() override;
+	
+	std::string title() const override { return "APRS RX"; };
+
+private:
+	NavigationView& nav_;
+	Rect view_rect = { 0, 3 * 8, 240, 280 };
+	
+	APRSRxView view_stream { nav_, view_rect };
+	APRSTableView view_table { nav_, view_rect };
+	
+	TabView tab_view {
+		{ "Stream", Color::cyan(), &view_stream },
+		{ "List", Color::yellow(), &view_table }
+	};
+
+	MessageHandlerRegistration message_handler_packet {
+		Message::ID::APRSPacket,
+		[this](Message* const p) {
+			const auto message = static_cast<const APRSPacketMessage*>(p);
+			this->view_stream.on_packet(message);
+			this->view_table.on_pkt(message);
+		}
+	};
+};
+
+} /* namespace ui */
+
+#endif/*__UI_APRS_RX_H__*/

firmware/application/apps/ui_debug.cpp

@@ -121,7 +121,8 @@ void TemperatureWidget::paint(Painter& painter) {
 }
 
 TemperatureWidget::temperature_t TemperatureWidget::temperature(const sample_t sensor_value) const {
-	return -35 + sensor_value * 4;  //max2837 datasheet temp 25ºC has sensor value: 15
+	/*It seems to be a temperature difference of 25C*/
+	return -40 +(sensor_value * 4.31)+25;  //max2837 datasheet temp 25ºC has sensor value: 15
 }
 
 std::string TemperatureWidget::temperature_str(const temperature_t temperature) const {

firmware/application/apps/ui_fileman.cpp

@@ -216,6 +216,7 @@ FileSaveView::FileSaveView(
 }*/
 
 void FileLoadView::refresh_widgets(const bool v) {
+	(void)v; //avoid unused warning
 	set_dirty();
 }
 

firmware/application/apps/ui_freqman.cpp

@@ -48,6 +48,9 @@ FreqManBaseView::FreqManBaseView(
 	} else
 		error_ = ERROR_NOFILES;
 	
+	// initialize
+	change_category(last_category_id);
+	
 	// Default function
 	on_change_category = [this](int32_t category_id) {
 		change_category(category_id);

firmware/application/apps/ui_freqman.hpp

@@ -64,7 +64,7 @@ protected:
 	
 	OptionsField options_category {
 		{ 9 * 8, 4 },
-		12,
+		14,
 		{ }
 	};
 	
@@ -103,19 +103,19 @@ private:
 	};
 	
 	Labels labels {
-		{ { 2 * 8, 14 * 8 }, "Save as:", Color::white() }
+		{ { 1 * 8, 12 * 8 }, "Save as:", Color::white() }
 	};
 	
 	Button button_save_name {
-		{ 2 * 8, 17 * 8, 14 * 8, 48 },
+		{ 1 * 8, 17 * 8, 12 * 8, 48 },
 		"Name (set)"
 	};
 	Button button_save_timestamp {
-		{ 2 * 8, 25 * 8, 14 * 8, 48 },
+		{ 1 * 8, 25 * 8, 12 * 8, 48 },
 		"Timestamp:"
 	};
 	LiveDateTime live_timestamp {
-		{ 17 * 8, 27 * 8, 11 * 8, 16 }
+		{ 14 * 8, 27 * 8, 16 * 8, 16 }
 	};
 };
 

firmware/application/apps/ui_looking_glass_app.cpp

@@ -100,7 +100,7 @@ void GlassView::on_channel_spectrum(const ChannelSpectrum &spectrum)
     }
 
     if (pixel_index) 
-        f_center += SEARCH_SLICE_WIDTH; //Move into the next bandwidth slice NOTE: spectrum.sampling_rate = SEARCH_SLICE_WIDTH
+        f_center += LOOKING_GLASS_SLICE_WIDTH; //Move into the next bandwidth slice NOTE: spectrum.sampling_rate = LOOKING_GLASS_SLICE_WIDTH
     else
         f_center = f_center_ini; //Start a new sweep
 
@@ -143,8 +143,8 @@ void GlassView::on_range_changed()
     else
         field_marker.set_step(marker_step); //step needs to be a pixel wide.
 
-    f_center_ini = f_min + (SEARCH_SLICE_WIDTH / 2);    //Initial center frequency for sweep
-    f_center_ini += SEARCH_SLICE_WIDTH;                 //euquiq: Why do I need to move the center ???!!! (shift needed for marker accuracy)
+    f_center_ini = f_min + (LOOKING_GLASS_SLICE_WIDTH / 2);    //Initial center frequency for sweep
+    f_center_ini += LOOKING_GLASS_SLICE_WIDTH;                 //euquiq: Why do I need to move the center ???!!! (shift needed for marker accuracy)
 
     PlotMarker(field_marker.value()); //Refresh marker on screen
 
@@ -153,20 +153,20 @@ void GlassView::on_range_changed()
     max_power = 0;
     bins_Hz_size = 0;                               //reset amount of Hz filled up by pixels
     
-    baseband::set_spectrum(SEARCH_SLICE_WIDTH, field_trigger.value());   
+    baseband::set_spectrum(LOOKING_GLASS_SLICE_WIDTH, field_trigger.value());   
     receiver_model.set_tuning_frequency(f_center_ini); //tune rx for this slice
 }
 
-void GlassView::PlotMarker(rf::Frequency pos)
+void GlassView::PlotMarker(rf::Frequency fpos)
 {
-    pos = pos * MHZ_DIV;
+    int64_t pos = fpos * MHZ_DIV;
     pos -= f_min;
     pos = pos / marker_pixel_step; //Real pixel 
 
     portapack::display.fill_rectangle({0, 100, 240, 8}, Color::black()); //Clear old marker and whole marker rectangle btw
-    portapack::display.fill_rectangle({pos - 2, 100, 5, 3}, Color::red()); //Red marker middle
-    portapack::display.fill_rectangle({pos - 1, 103, 3, 3}, Color::red()); //Red marker middle
-    portapack::display.fill_rectangle({pos, 106, 1, 2}, Color::red()); //Red marker middle
+    portapack::display.fill_rectangle({(int16_t)pos - 2, 100, 5, 3}, Color::red()); //Red marker middle
+    portapack::display.fill_rectangle({(int16_t)pos - 1, 103, 3, 3}, Color::red()); //Red marker middle
+    portapack::display.fill_rectangle({(int16_t)pos, 106, 1, 2}, Color::red()); //Red marker middle
 }
 
 GlassView::GlassView(
@@ -216,10 +216,12 @@ GlassView::GlassView(
 
     filter_config.set_selected_index(0);
 	filter_config.on_change = [this](size_t n, OptionsField::value_t v) {
+		(void)n;
 		min_color_power = v;
 	};
 
 	range_presets.on_change = [this](size_t n, OptionsField::value_t v) {
+		(void)n;
 		field_frequency_min.set_value(presets_db[v].min,false);
         field_frequency_max.set_value(presets_db[v].max,false);
         this->on_range_changed();
@@ -240,11 +242,11 @@ GlassView::GlassView(
 
     field_trigger.set_value(32);   //Defaults to 32, as normal triggering resolution
     field_trigger.on_change = [this](int32_t v) {
-        baseband::set_spectrum(SEARCH_SLICE_WIDTH, v);
+        baseband::set_spectrum(LOOKING_GLASS_SLICE_WIDTH, v);
     };
 
     display.scroll_set_area( 109, 319);
-    baseband::set_spectrum(SEARCH_SLICE_WIDTH, field_trigger.value());	//trigger:
+    baseband::set_spectrum(LOOKING_GLASS_SLICE_WIDTH, field_trigger.value());	//trigger:
     // Discord User jteich:  WidebandSpectrum::on_message to set the trigger value. In WidebandSpectrum::execute ,
     // it keeps adding the output of the fft to the buffer until "trigger" number of calls are made, 
     //at which time it pushes the buffer up with channel_spectrum.feed
@@ -252,8 +254,8 @@ GlassView::GlassView(
     on_range_changed();
 
     receiver_model.set_modulation(ReceiverModel::Mode::SpectrumAnalysis);
-	receiver_model.set_sampling_rate(SEARCH_SLICE_WIDTH); //20mhz
-    receiver_model.set_baseband_bandwidth(SEARCH_SLICE_WIDTH); // possible values: 1.75/2.5/3.5/5/5.5/6/7/8/9/10/12/14/15/20/24/28MHz
+	receiver_model.set_sampling_rate(LOOKING_GLASS_SLICE_WIDTH); //20mhz
+    receiver_model.set_baseband_bandwidth(LOOKING_GLASS_SLICE_WIDTH); // possible values: 1.75/2.5/3.5/5/5.5/6/7/8/9/10/12/14/15/20/24/28MHz
     receiver_model.set_squelch_level(0);
 	receiver_model.enable();
 }

firmware/application/apps/ui_looking_glass_app.hpp

@@ -33,7 +33,7 @@
 
  namespace ui
  {
-     #define SEARCH_SLICE_WIDTH	20000000 // Each slice bandwidth 20 MHz
+     #define LOOKING_GLASS_SLICE_WIDTH	20000000 // Each slice bandwidth 20 MHz
      #define MHZ_DIV	            1000000
      #define X2_MHZ_DIV	        2000000
 
@@ -41,6 +41,10 @@
      {
      public:
          GlassView(NavigationView &nav);
+
+	 GlassView( const GlassView &);
+	 GlassView& operator=(const GlassView &nav);
+
          ~GlassView();
          std::string title() const override { return "Looking Glass"; };
 
@@ -77,7 +81,7 @@
          rf::Frequency f_center { 0 };
          rf::Frequency f_center_ini { 0 };
          rf::Frequency marker_pixel_step { 0 };
-         rf::Frequency each_bin_size { SEARCH_SLICE_WIDTH  / 240 };
+         rf::Frequency each_bin_size { LOOKING_GLASS_SLICE_WIDTH  / 240 };
          rf::Frequency bins_Hz_size { 0 };
          uint8_t min_color_power { 0 };
          uint32_t pixel_index { 0 };
@@ -180,4 +184,4 @@
 
      };
  } 
- 
+ 

firmware/application/apps/ui_mictx.cpp

@@ -65,8 +65,13 @@ void MicTXView::configure_baseband() {
 		sampling_rate / 20,		// Update vu-meter at 20Hz
 		transmitting ? transmitter_model.channel_bandwidth() : 0,
 		mic_gain,
-		TONES_F2D(tone_key_frequency(tone_key_index), sampling_rate)
+		TONES_F2D(tone_key_frequency(tone_key_index), sampling_rate),
+		enable_am,
+		enable_dsb,
+		enable_usb,
+		enable_lsb
 	);
+
 }
 
 void MicTXView::set_tx(bool enable) {
@@ -143,8 +148,20 @@ void MicTXView::rxaudio(bool is_on) {
 	if (is_on) {
 		audio::input::stop();
 		baseband::shutdown();
-		baseband::run_image(portapack::spi_flash::image_tag_nfm_audio);
-		receiver_model.set_modulation(ReceiverModel::Mode::NarrowbandFMAudio);
+		
+		if (enable_am || enable_usb || enable_lsb || enable_dsb) {
+			baseband::run_image(portapack::spi_flash::image_tag_am_audio);
+			receiver_model.set_modulation(ReceiverModel::Mode::AMAudio);	
+			if (options_mode.selected_index() < 4)
+				receiver_model.set_am_configuration(options_mode.selected_index() - 1);
+			else
+				receiver_model.set_am_configuration(0);
+		}
+		else {
+			baseband::run_image(portapack::spi_flash::image_tag_nfm_audio);
+			receiver_model.set_modulation(ReceiverModel::Mode::NarrowbandFMAudio);
+			
+		}
 		receiver_model.set_sampling_rate(3072000);
 		receiver_model.set_baseband_bandwidth(1750000);	
 //		receiver_model.set_tuning_frequency(field_frequency.value()); //probably this too can be commented out.
@@ -155,15 +172,15 @@ void MicTXView::rxaudio(bool is_on) {
 		receiver_model.enable();
 		audio::output::start();
 	} else {	//These incredibly convoluted steps are required for the vumeter to reappear when stopping RX.
+		receiver_model.set_modulation(ReceiverModel::Mode::NarrowbandFMAudio); //This fixes something with AM RX...
 		receiver_model.disable();
 		baseband::shutdown();
+
 		baseband::run_image(portapack::spi_flash::image_tag_mic_tx);
-		audio::input::start();
-//		transmitter_model.enable();		
+		audio::output::stop();
+		audio::input::start();	
 		portapack::pin_i2s0_rx_sda.mode(3);
-//		transmitting = false;
 		configure_baseband();
-//		transmitter_model.disable();
 	}
 }
 
@@ -198,11 +215,13 @@ MicTXView::MicTXView(
 		&field_bw,
 		&field_rfgain,
 		&field_rfamp,
+		&options_mode,
 		&field_frequency,
 		&options_tone_key,
 		&check_rogerbeep,
 		&check_rxactive,
 		&field_volume,
+		&field_rxbw,
 		&field_squelch,
 		&field_rxfrequency,
 		&field_rxlna,
@@ -262,6 +281,42 @@ MicTXView::MicTXView(
 	};
 	field_rfamp.set_value(rf_amp ? 14 : 0);
 	
+	options_mode.on_change = [this](size_t, int32_t v) {
+		enable_am = false;
+		enable_usb = false;
+		enable_lsb = false;
+		enable_dsb = false;
+		switch(v) {
+			case 0:
+				enable_am = false;
+				enable_usb = false;
+				enable_lsb = false;
+				enable_dsb = false;
+				field_bw.set_value(transmitter_model.channel_bandwidth() / 1000);
+				//if (rx_enabled)
+				rxaudio(rx_enabled); //Update now if we have RX audio on
+				break;
+			case 1:
+				enable_am = true;
+				rxaudio(rx_enabled); //Update now if we have RX audio on
+				break;
+			case 2:
+				enable_usb = true;
+				rxaudio(rx_enabled); //Update now if we have RX audio on
+				break;
+			case 3:
+				enable_lsb = true;
+				rxaudio(rx_enabled); //Update now if we have RX audio on
+				break;
+			case 4:
+				enable_dsb = true;
+				rxaudio(rx_enabled); //Update now if we have RX audio on
+				break;
+		}
+		//configure_baseband();
+	};
+	
+	
 	/*
 	check_va.on_select = [this](Checkbox&, bool v) {
 		va_enabled = v;
@@ -331,6 +386,21 @@ MicTXView::MicTXView(
 	field_volume.set_value((receiver_model.headphone_volume() - audio::headphone::volume_range().max).decibel() + 99);
 	field_volume.on_change = [this](int32_t v) { this->on_headphone_volume_changed(v);	};
 
+	field_rxbw.on_change = [this](size_t, int32_t v) {
+		switch(v) {
+			case 0:
+				receiver_model.set_nbfm_configuration(0);
+				break;
+			case 1:
+				receiver_model.set_nbfm_configuration(1);
+				break;
+			case 2:
+				receiver_model.set_nbfm_configuration(2);
+				break;
+		}
+	};
+	field_rxbw.set_selected_index(2);
+
 	field_squelch.on_change = [this](int32_t v) { 
 		receiver_model.set_squelch_level(100 - v);	
 	};

firmware/application/apps/ui_mictx.hpp

@@ -99,19 +99,27 @@ private:
 	int32_t focused_ui { 2 };
 	bool button_touch { false };
 
+	//AM TX Stuff
+	bool enable_am { false };
+	bool enable_dsb { false };
+	bool enable_usb { false };
+	bool enable_lsb { false };
+
 	
 	Labels labels {
 		{ { 3 * 8, 1 * 8 }, "MIC. GAIN:", Color::light_grey() },
 		{ { 3 * 8, 3 * 8 }, "F:", Color::light_grey() },
-		{ { 15 * 8, 3 * 8 }, "BW:   kHz", Color::light_grey() },
+		{ { 15 * 8, 3 * 8 }, "BW:   FM kHz", Color::light_grey() },
 		{ { 3 * 8, 5 * 8 }, "GAIN:", Color::light_grey() },
 		{ {11 * 8, 5 * 8 }, "Amp:", Color::light_grey() },
+		{ { 18 * 8, (5 * 8) }, "Mode:", Color::light_grey() },
 		{ { 3 * 8, 8 * 8 }, "TX Activation:", Color::light_grey() },
 		{ { 4 * 8, 10 * 8 }, "LVL:", Color::light_grey() },
 		{ {12 * 8, 10 * 8 }, "ATT:", Color::light_grey() },
 		{ {20 * 8, 10 * 8 }, "DEC:", Color::light_grey() },
 		{ { 4 * 8, ( 13 * 8 ) - 2 }, "TONE KEY:", Color::light_grey() },
 		{ { 9 * 8, 23 * 8 }, "VOL:", Color::light_grey() },
+		{ {17 * 8, 23 * 8 }, "FM RXBW:", Color::light_grey() },
 		{ {17 * 8, 25 * 8 }, "SQ:", Color::light_grey() },
 		{ { 5 * 8, 25 * 8 }, "F:", Color::light_grey() },
 		{ { 5 * 8, 27 * 8 }, "LNA:", Color::light_grey()},
@@ -162,6 +170,18 @@ private:
 		14,
 		' '
 	};
+	
+	OptionsField options_mode {
+		{ 24 * 8, 5 * 8 },
+		3,
+		{
+			{ "FM", 0 },
+			{ "AM", 1 },
+			{ "USB", 2 },
+			{ "LSB", 3 },
+			{ "DSB", 4 }
+		}
+	};
 	/*
 	Checkbox check_va {
 		{ 3 * 8, (10 * 8) - 4 },
@@ -231,6 +251,16 @@ private:
 		' ',
 	};
 	
+	OptionsField field_rxbw {
+	       { 25 * 8, 23 * 8},
+	       3,
+	       {
+	       		{"8k5", 0},
+	       		{"11k", 1},
+	       		{"16k", 2}
+	       	}
+	};
+	
 	NumberField field_squelch {
 		{ 20 * 8, 25 * 8 },
 		2,

firmware/application/apps/ui_morse.cpp

@@ -226,6 +226,7 @@ MorseView::MorseView(
 	};
 
 	options_loop.on_change = [this](size_t i, uint32_t n) {
+		(void)i; //avoid unused warning
 		loop = n;
 	};
 	

firmware/application/apps/ui_scanner.cpp

@@ -172,7 +172,7 @@ void ScannerView::show_max() {		//show total number of freqs to scan
 
 ScannerView::ScannerView(
 	NavigationView& nav
-	) : nav_ { nav }
+	) : nav_ { nav } , loaded_file_name { "SCANNER" }
 {
 	add_children({
 		&labels,
@@ -364,7 +364,7 @@ ScannerView::ScannerView(
 				big_display.set(frequency_list[current_index]);		//After showing an error
 			}
 			else {
-				auto result = scanner_file.append(freq_file_path); //Second: append if it is not there
+				scanner_file.append(freq_file_path); //Second: append if it is not there
 				scanner_file.write_line(frequency_to_add + ",d=ADD FQ");
 			}
 		} else
@@ -409,7 +409,12 @@ void ScannerView::frequency_file_load(std::string file_name, bool stop_all_befor
 						case FM_2:	def_step = 50000; 	break ;
 						case N_1:	def_step = 25000;  	break ;
 						case N_2:	def_step = 250000; 	break ;
-						case AIRBAND:def_step= 8330;  	break ;
+						case AIRBAND:   def_step= 8330;  	break ;
+						case ERROR_STEP:
+						case STEP_DEF:
+						default:
+							def_step = step_mode.selected_index_value(); //Use def_step from manual selector
+								 			break ;		
 					}
 					frequency_list.push_back(entry.frequency_a);		//Store starting freq and description
 					description_list.push_back("R" + to_string_short_freq(entry.frequency_a)
@@ -435,7 +440,7 @@ void ScannerView::frequency_file_load(std::string file_name, bool stop_all_befor
 	} 
 	else 
 	{
-		loaded_file_name = 'SCANNER'; // back to the default frequency file
+		loaded_file_name = "SCANNER"; // back to the default frequency file
 		desc_cycle.set(" NO " + file_name + ".TXT FILE ..." );
 	}
 	audio::output::stop();
@@ -504,7 +509,9 @@ size_t ScannerView::change_mode(uint8_t new_mod) { //Before this, do a scan_thre
 	using option_t = std::pair<std::string, int32_t>;
 	using options_t = std::vector<option_t>;
 	options_t bw;
-	field_bw.on_change = [this](size_t n, OptionsField::value_t) {	};
+	field_bw.on_change = [this](size_t n, OptionsField::value_t) { 
+		(void)n;  //avoid unused warning 
+	};
 
 	switch (new_mod) {
 	case NFM:	//bw 16k (2) default
@@ -556,4 +563,4 @@ void ScannerView::start_scan_thread() {
 	scan_thread = std::make_unique<ScannerThread>(frequency_list);
 }
 
-} /* namespace ui */
+} /* namespace ui */

firmware/application/apps/ui_search.hpp

@@ -212,12 +212,14 @@ private:
 		true
 	};
 	OptionsField options_snap {
-		{ 17 * 8, 15 * 8 },
-		7,
-		{
+		{ 17 * 8, 15 * 8 }, // Position
+		7,                  // Length
+		{                   // Options
 			{ "25kHz  ", 25000 },
 			{ "12.5kHz", 12500 },
-			{ "8.33kHz", 8333 }
+			{ "8.33kHz", 8333 },
+			{ "2.5kHz", 2500 },
+			{ "500Hz", 500 }
 		}
 	};
 	

firmware/application/apps/ui_settings.cpp

@@ -155,7 +155,7 @@ SetRadioView::SetRadioView(
 	});
 
 	SetFrequencyCorrectionModel model {
-		static_cast<int8_t>(portapack::persistent_memory::correction_ppb() / 1000)
+		static_cast<int8_t>(portapack::persistent_memory::correction_ppb() / 1000) , 0
 	};
 
 	form_init(model);
@@ -285,15 +285,17 @@ SetUIView::SetUIView(NavigationView& nav) {
 		&checkbox_bloff,
 		&options_bloff,
 		&checkbox_showsplash,
+		&checkbox_showclock,
+		&options_clockformat,		
 		&button_ok
 	});
 	
 	checkbox_speaker.set_value(persistent_memory::config_speaker());
 	checkbox_showsplash.set_value(persistent_memory::config_splash());
+	checkbox_showclock.set_value(!persistent_memory::hide_clock());
 	//checkbox_login.set_value(persistent_memory::config_login());
 	
 	uint32_t backlight_timer = persistent_memory::config_backlight_timer();
-	
 	if (backlight_timer) {
 		checkbox_bloff.set_value(true);
 		options_bloff.set_by_value(backlight_timer);
@@ -301,6 +303,12 @@ SetUIView::SetUIView(NavigationView& nav) {
 		options_bloff.set_selected_index(0);
 	}
 
+	if (persistent_memory::clock_with_date()) {
+		options_clockformat.set_selected_index(1);
+	} else {
+		options_clockformat.set_selected_index(0);
+	}
+
 	checkbox_speaker.on_select = [this](Checkbox&, bool v) {
     		if (v) audio::output::speaker_mute();		//Just mute audio if speaker is disabled
 
@@ -316,7 +324,14 @@ SetUIView::SetUIView(NavigationView& nav) {
 		else
 			persistent_memory::set_config_backlight_timer(0);
 		
+		if (checkbox_showclock.value()){
+		    if (options_clockformat.selected_index() == 1)
+			    persistent_memory::set_clock_with_date(true);    
+     		else
+			    persistent_memory::set_clock_with_date(false);		
+		}		
 		persistent_memory::set_config_splash(checkbox_showsplash.value());
+		persistent_memory::set_clock_hidden(!checkbox_showclock.value());
 		//persistent_memory::set_config_login(checkbox_login.value());
 		nav.pop();
 	};

firmware/application/apps/ui_settings.hpp

@@ -51,8 +51,8 @@ public:
 
 private:
 	Labels labels {
-		{ { 6 * 8, 7 * 16 }, "YYYY/MM/DD HH:MM:SS", Color::grey() },
-		{ { 10 * 8, 9 * 16 }, "/  /     :  :", Color::light_grey() }
+		{ { 6 * 8, 7 * 16 }, "YYYY-MM-DD HH:MM:SS", Color::grey() },
+		{ { 10 * 8, 9 * 16 }, "-  -     :  :", Color::light_grey() }
 	};
 	
 	NumberField field_year {
@@ -226,19 +226,19 @@ private:
 	};*/
 	
 	Checkbox checkbox_speaker {
-		{ 3 * 8, 2 * 16 },
+		{ 3 * 8, 4 * 16 },
 		20,
 		"Hide H1 Speaker option"
 	};
+	
 	Checkbox checkbox_bloff {
-		{ 3 * 8, 5 * 16 },
+		{ 3 * 8, 6 * 16 },
 		20,
 		"Backlight off after:"
 	};
-
 	OptionsField options_bloff {
-		{ 52, 6 * 16 + 8 },
-		10,
+		{ 52, 7 * 16 + 8 },
+		20,
 		{
 			{ "5 seconds", 5 },
 			{ "15 seconds", 15 },
@@ -252,10 +252,25 @@ private:
 	
 	Checkbox checkbox_showsplash {
 		{ 3 * 8, 9 * 16 },
-		11,
+		20,
 		"Show splash"
 	};
 	
+	Checkbox checkbox_showclock {	
+		{ 3 * 8, 11 * 16 },
+		20,
+		"Show clock with:"
+	};
+
+	OptionsField options_clockformat {
+		{ 52, 12 * 16 + 8 },
+		20,
+		{
+			{ "time only", 0 },
+			{ "time and date", 1 }
+		}
+	};	
+	
 	Button button_ok {
 		{ 2 * 8, 16 * 16, 12 * 8, 32 },
 		"Save"

firmware/application/apps/ui_sonde.cpp

@@ -22,6 +22,7 @@
 
 #include "ui_sonde.hpp"
 #include "baseband_api.hpp"
+#include "audio.hpp"
 
 #include "portapack.hpp"
 #include <cstring>
@@ -50,6 +51,8 @@ SondeView::SondeView(NavigationView& nav) {
 		&field_lna,
 		&field_vga,
 		&rssi,
+		&field_volume,
+		&check_beep,
 		&check_log,
 		&check_crc,
 		&text_signature,
@@ -63,6 +66,9 @@ SondeView::SondeView(NavigationView& nav) {
 		&button_see_map
 	});
 
+	// start from the frequency currently stored in the receiver_model:
+	target_frequency_ = receiver_model.tuning_frequency();
+
 	field_frequency.set_value(target_frequency_);
 	field_frequency.set_step(500);		//euquiq: was 10000, but we are using this for fine-tunning
 	field_frequency.on_change = [this](rf::Frequency f) {
@@ -80,6 +86,10 @@ SondeView::SondeView(NavigationView& nav) {
 	
 	geopos.set_read_only(true);
 	
+	check_beep.on_select = [this](Checkbox&, bool v) {
+		beep = v;
+	};
+
 	check_log.on_select = [this](Checkbox&, bool v) {
 		logging = v;
 	};
@@ -107,16 +117,37 @@ SondeView::SondeView(NavigationView& nav) {
 			gps_info.lon,
 			999); //set a dummy heading out of range to draw a cross...probably not ideal?
 	};
-	
+
 	logger = std::make_unique<SondeLogger>();
 	if (logger)
 		logger->append(u"sonde.txt");
+
+	// initialize audio:
 	
+	field_volume.set_value((receiver_model.headphone_volume() - audio::headphone::volume_range().max).decibel() + 99);
+	
+	field_volume.on_change = [this](int32_t v) {
+		this->on_headphone_volume_changed(v);
+	};
+
+	audio::output::start();
+	audio::output::speaker_unmute();
+
+	// inject a PitchRSSIConfigureMessage in order to arm 
+	// the pitch rssi events that will be used by the 
+	// processor:
+	const PitchRSSIConfigureMessage message { true, 0 };
+
+	shared_memory.application_queue.push(message);
+
+	baseband::set_pitch_rssi(0, true);
 }
 
 SondeView::~SondeView() {
+	baseband::set_pitch_rssi(0, false);
 	radio::disable();
 	baseband::shutdown();
+	audio::output::stop();
 }
 
 void SondeView::focus() {
@@ -156,18 +187,31 @@ void SondeView::on_packet(const sonde::Packet &packet)
 		}
 
 		gps_info = packet.get_GPS_data();
+
 		geopos.set_altitude(gps_info.alt);
 		geopos.set_lat(gps_info.lat);
 		geopos.set_lon(gps_info.lon);
 
-		if (logger && logging)
+		if (logger && logging) {
 			logger->on_packet(packet);
+		}
+
+		if(beep) {
+			baseband::request_beep();
+		}
 	}
 }
 
+void SondeView::on_headphone_volume_changed(int32_t v) {
+	const auto new_volume = volume_t::decibel(v - 99) + audio::headphone::volume_range().max;
+	receiver_model.set_headphone_volume(new_volume);
+}
+
 void SondeView::set_target_frequency(const uint32_t new_value) {
 	target_frequency_ = new_value;
-	radio::set_tuning_frequency(tuning_frequency());
+	//radio::set_tuning_frequency(tuning_frequency());
+	// we better remember the tuned frequency, by using this function instead:
+	receiver_model.set_tuning_frequency(target_frequency_);
 }
 
 uint32_t SondeView::tuning_frequency() const {

firmware/application/apps/ui_sonde.hpp

@@ -55,7 +55,7 @@ class SondeView : public View {
 public:
 	static constexpr uint32_t sampling_rate = 2457600;
 	static constexpr uint32_t baseband_bandwidth = 1750000;
-
+		
 	SondeView(NavigationView& nav);
 	~SondeView();
 
@@ -68,10 +68,14 @@ private:
 	uint32_t target_frequency_ { 402700000 };
 	bool logging { false };
 	bool use_crc { false };
-	sonde::GPS_data gps_info;
-	sonde::temp_humid temp_humid_info;
-	std::string sonde_id;
+	bool beep { false };
+
+	sonde::GPS_data gps_info { };
+	sonde::temp_humid temp_humid_info { };
+	std::string sonde_id { };
 	
+	// AudioOutput audio_output { };
+
 	Labels labels {
 		{ { 4 * 8, 2 * 16 }, "Type:", Color::light_grey() },
 		{ { 6 * 8, 3 * 16 }, "ID:", Color::light_grey() },
@@ -103,14 +107,29 @@ private:
 		{ 21 * 8, 0, 6 * 8, 4 },
 	};
 	
+	NumberField field_volume {
+		{ 28 * 8, 0 * 16 },
+		2,
+		{ 0, 99 },
+		1,
+		' ',
+	};
+	
+
+	Checkbox check_beep {
+		{ 22 * 8, 6 * 16 },
+		3,
+		"Beep"
+	};
+
 	Checkbox check_log {
-		{ 23 * 8, 6 * 16 },
+		{ 22 * 8, 8 * 16 },
 		3,
 		"Log"
 	};
 	
 	Checkbox check_crc {
-		{ 23 * 8, 8 * 16 },
+		{ 22 * 8, 10 * 16 },
 		3,
 		"CRC"
 	};
@@ -170,7 +189,10 @@ private:
 	};
 
 	void on_packet(const sonde::Packet& packet);
+	void on_headphone_volume_changed(int32_t v);
+	
 	void set_target_frequency(const uint32_t new_value);
+
 	uint32_t tuning_frequency() const;
 };
 

firmware/application/baseband_api.cpp

@@ -130,6 +130,13 @@ void set_afsk(const uint32_t baudrate, const uint32_t word_length, const uint32_
 	send_message(&message);
 }
 
+void set_aprs(const uint32_t baudrate) {
+	const APRSRxConfigureMessage message {
+		baudrate
+	};
+	send_message(&message);
+}
+
 void set_btle(const uint32_t baudrate, const uint32_t word_length, const uint32_t trigger_value, const bool trigger_word) {
 	const BTLERxConfigureMessage message {
 		baudrate,
@@ -176,13 +183,18 @@ void kill_afsk() {
 }
 
 void set_audiotx_config(const uint32_t divider, const float deviation_hz, const float audio_gain,
-					const uint32_t tone_key_delta) {
+					const uint32_t tone_key_delta, const bool am_enabled, const bool dsb_enabled,
+					const bool usb_enabled, const bool lsb_enabled) {
 	const AudioTXConfigMessage message {
 		divider,
 		deviation_hz,
 		audio_gain,
 		tone_key_delta,
-		(float)persistent_memory::tone_mix() / 100.0f
+		(float)persistent_memory::tone_mix() / 100.0f,
+		am_enabled,
+		dsb_enabled,
+		usb_enabled,
+		lsb_enabled
 	};
 	send_message(&message);
 }
@@ -224,11 +236,8 @@ void set_fsk_data(const uint32_t stream_length, const uint32_t samples_per_bit,
 	send_message(&message);
 }
 
-void set_pocsag(const pocsag::BitRate bitrate, bool phase) {
-	const POCSAGConfigureMessage message {
-		bitrate,
-		phase
-	};
+void set_pocsag() {
+	const POCSAGConfigureMessage message {};
 	send_message(&message);
 }
 

firmware/application/baseband_api.hpp

@@ -61,13 +61,15 @@ void set_tones_config(const uint32_t bw, const uint32_t pre_silence, const uint1
 void kill_tone();
 void set_sstv_data(const uint8_t vis_code, const uint32_t pixel_duration);
 void set_audiotx_config(const uint32_t divider, const float deviation_hz, const float audio_gain,
-					const uint32_t tone_key_delta);
+			const uint32_t tone_key_delta, const bool am_enabled, const bool dsb_enabled,
+			const bool usb_enabled, const bool lsb_enabled);
 void set_fifo_data(const int8_t * data);
 void set_pitch_rssi(int32_t avg, bool enabled);
 void set_afsk_data(const uint32_t afsk_samples_per_bit, const uint32_t afsk_phase_inc_mark, const uint32_t afsk_phase_inc_space,
 					const uint8_t afsk_repeat, const uint32_t afsk_bw, const uint8_t symbol_count);
 void kill_afsk();
 void set_afsk(const uint32_t baudrate, const uint32_t word_length, const uint32_t trigger_value, const bool trigger_word);
+void set_aprs(const uint32_t baudrate);
 
 void set_btle(const uint32_t baudrate, const uint32_t word_length, const uint32_t trigger_value, const bool trigger_word);
 
@@ -77,7 +79,7 @@ void set_ook_data(const uint32_t stream_length, const uint32_t samples_per_bit,
 					const uint32_t pause_symbols);
 void set_fsk_data(const uint32_t stream_length, const uint32_t samples_per_bit, const uint32_t shift,
 					const uint32_t progress_notice);
-void set_pocsag(const pocsag::BitRate bitrate, bool phase);
+void set_pocsag();
 void set_adsb();
 void set_jammer(const bool run, const jammer::JammerType type, const uint32_t speed);
 void set_rds_data(const uint16_t message_length);

firmware/application/event_m0.cpp

@@ -298,6 +298,12 @@ void EventDispatcher::handle_switches() {
 	}
 
 	if( in_key_event ) {
+		if (switches_state[(size_t)ui::KeyEvent::Left] && switches_state[(size_t)ui::KeyEvent::Up])
+		{
+			const auto event = static_cast<ui::KeyEvent>(ui::KeyEvent::Back);
+			context.focus_manager().update(top_widget, event);
+		}
+
 		// If we're in a key event, return. We will ignore all additional key
 		// presses until the first key is released. We also want to ignore events
 		// where the last key held generates a key event when other pressed keys

firmware/application/main.cpp

@@ -140,6 +140,9 @@ Continuous (Fox-oring)
 #include "sd_card.hpp"
 
 #include <string.h>
+ 
+#include "rffc507x.hpp"      /* c/m, avoiding initial short ON Ant_DC_Bias pulse, from cold reset  */
+rffc507x::RFFC507x first_if;
 
 static void event_loop() {
 	ui::Context context;
@@ -160,6 +163,7 @@ static void event_loop() {
 }
 
 int main(void) {
+	first_if.init();    /* To avoid initial short Ant_DC_Bias pulse ,we need quick set up GP01_RFF507X =1 */
 	if( portapack::init() ) {
 		portapack::display.init();
 

firmware/application/portapack.cpp

@@ -83,7 +83,7 @@ TransmitterModel transmitter_model;
 TemperatureLogger temperature_logger;
 
 bool antenna_bias { false };
-uint8_t bl_tick_counter { 0 };
+uint32_t bl_tick_counter { 0 };
 
 void set_antenna_bias(const bool v) {
 	antenna_bias = v;
@@ -179,20 +179,23 @@ static PortaPackModel portapack_model() {
 	static Optional<PortaPackModel> model;
 
 	if( !model.is_valid() ) {
-		if( audio_codec_wm8731.detected() ) {
-			model = PortaPackModel::R1_20150901;
-		} else {
+		/*For the time being, it is impossible to distinguish the hardware of R1 and R2 from the software level*/
+		/*At this point, I2c is not ready.*/
+		//if( audio_codec_wm8731.detected() ) {
+		//	model = PortaPackModel::R1_20150901;
+		//} else {
 			model = PortaPackModel::R2_20170522;
-		}
+		//}
 	}
 
 	return model.value();
 }
 
 static audio::Codec* portapack_audio_codec() {
-	return (portapack_model() == PortaPackModel::R2_20170522)
-		? static_cast<audio::Codec*>(&audio_codec_ak4951)
-		: static_cast<audio::Codec*>(&audio_codec_wm8731)
+	/* I2C ready OK, Automatic recognition of audio chip */
+	return (audio_codec_wm8731.detected())
+		? static_cast<audio::Codec*>(&audio_codec_wm8731)
+		: static_cast<audio::Codec*>(&audio_codec_ak4951)
 		;
 }
 

firmware/application/portapack.hpp

@@ -54,7 +54,7 @@ extern TransmitterModel transmitter_model;
 extern bool speaker_mode;
 void set_speaker_mode(const bool v);
 
-extern uint8_t bl_tick_counter;
+extern uint32_t bl_tick_counter;
 extern bool antenna_bias;
 
 extern TemperatureLogger temperature_logger;

firmware/application/radio.cpp

@@ -111,14 +111,12 @@ void set_direction(const rf::Direction new_direction) {
 	// Hack to fix the CPLD (clocking ?) bug: toggle CPLD SRAM overlay depending on new direction
 	// Use CPLD's EEPROM config when transmitting
 	// Use the SRAM overlay when receiving
-	if (direction != new_direction) {
-		if (new_direction == rf::Direction::Transmit) {
-			hackrf::cpld::init_from_eeprom();
-		} else {
-			if( !hackrf::cpld::load_sram() ) {
-				chSysHalt();
-			}
-		}
+
+	// teixeluis: undone "Hack to fix the CPLD (clocking ?) bug".
+	// Apparently with current CPLD code from the hackrf repo,
+	// toggling CPLD overlay should no longer be necessary:
+	if (direction != new_direction && new_direction == rf::Direction::Transmit) {
+		hackrf::cpld::init_from_eeprom();
 	}
 	
 	direction = new_direction;

firmware/application/receiver_model.cpp

@@ -171,7 +171,11 @@ void ReceiverModel::enable() {
 	update_baseband_bandwidth();
 	update_sampling_rate();
 	update_modulation();
+	
+	// TODO: would challenge if this should belong to the
+	// receiver_model namespace:
 	update_headphone_volume();
+
 	led_rx.on();
 }
 
@@ -182,6 +186,10 @@ void ReceiverModel::disable() {
 	// TODO: Responsibility for enabling/disabling the radio is muddy.
 	// Some happens in ReceiverModel, some inside radio namespace.
 	radio::disable();
+
+	// TODO: we are doing this repeatedly in different levels of the
+	// call stack. Keeping it for now, but there seem to be too many
+	// redundant calls:
 	led_rx.off();
 }
 

firmware/application/recent_entries.hpp

@@ -179,6 +179,24 @@ public:
 				}
 			}
 		}
+		else if( event == ui::KeyEvent::Up ) {
+			if(selected_key == recent.front().key()){
+				return false;
+			}
+			else {
+				advance(-1);
+				return true;
+			}
+		}
+		else if( event == ui::KeyEvent::Down ) {
+			if( selected_key == recent.back().key()) {
+				return false;
+			}
+			else {
+				advance(1);
+				return true;
+			}
+		}
 		return false;
 	}
 
@@ -264,7 +282,7 @@ public:
 		// TODO: What happens here shouldn't matter if I do proper damage detection!
 	}
 
-	void on_focus() override {
+	void focus() override {
 		_table.focus();
 	}
 

firmware/application/string_format.cpp

@@ -112,6 +112,23 @@ std::string to_string_dec_int(
 	return q;
 }
 
+std::string to_string_decimal(float decimal, int8_t precision) {
+	double integer_part;
+	double fractional_part;
+
+	std::string result;
+	
+	fractional_part = modf(decimal, &integer_part) * pow(10, precision);
+
+	if (fractional_part < 0) {
+		fractional_part = -fractional_part;
+	}
+
+	result = to_string_dec_int(integer_part) + "." + to_string_dec_uint(fractional_part, precision, '0');
+
+	return result;
+}
+
 std::string to_string_short_freq(const uint64_t f) {
 	auto final_str = to_string_dec_int(f / 1000000,4) + "." + to_string_dec_int((f / 100) % 10000, 4, '0');
 	return final_str;
@@ -165,8 +182,8 @@ std::string to_string_datetime(const rtc::RTC& value, const TimeFormat format) {
 	std::string string { "" };
 	
 	if (format == YMDHMS) {
-		string += to_string_dec_uint(value.year(), 4) + "/" +
-					to_string_dec_uint(value.month(), 2, '0') + "/" +
+		string += to_string_dec_uint(value.year(), 4) + "-" +
+					to_string_dec_uint(value.month(), 2, '0') + "-" +
 					to_string_dec_uint(value.day(), 2, '0') + " ";
 	}
 	
@@ -189,11 +206,11 @@ std::string to_string_timestamp(const rtc::RTC& value) {
 }
 
 std::string to_string_FAT_timestamp(const FATTimestamp& timestamp) {
-	return to_string_dec_uint((timestamp.FAT_date >> 9) + 1980) + "/" +
-		to_string_dec_uint((timestamp.FAT_date >> 5) & 0xF, 2) + "/" +
-		to_string_dec_uint((timestamp.FAT_date & 0x1F), 2) + " " +
-		to_string_dec_uint((timestamp.FAT_time >> 11), 2) + ":" +
-		to_string_dec_uint((timestamp.FAT_time >> 5) & 0x3F, 2);
+	return to_string_dec_uint((timestamp.FAT_date >> 9) + 1980) + "-" +
+		to_string_dec_uint((timestamp.FAT_date >> 5) & 0xF, 2, '0') + "-" +
+		to_string_dec_uint((timestamp.FAT_date & 0x1F), 2, '0') + " " +
+		to_string_dec_uint((timestamp.FAT_time >> 11), 2, '0') + ":" +
+		to_string_dec_uint((timestamp.FAT_time >> 5) & 0x3F, 2, '0');
 }
 
 std::string unit_auto_scale(double n, const uint32_t base_nano, uint32_t precision) {

firmware/application/string_format.hpp

@@ -43,6 +43,8 @@ const char unit_prefix[7] { 'n', 'u', 'm', 0, 'k', 'M', 'G' };
 std::string to_string_bin(const uint32_t n, const uint8_t l = 0);
 std::string to_string_dec_uint(const uint32_t n, const int32_t l = 0, const char fill = ' ');
 std::string to_string_dec_int(const int32_t n, const int32_t l = 0, const char fill = 0);
+std::string to_string_decimal(float decimal, int8_t precision);
+
 std::string to_string_hex(const uint64_t n, const int32_t l = 0);
 std::string to_string_hex_array(uint8_t * const array, const int32_t l = 0);
 

firmware/application/ui/ui_geomap.cpp

@@ -63,17 +63,9 @@ GeoPos::GeoPos(
 	const auto changed_fn = [this](int32_t) {
 		float lat_value = lat();
 		float lon_value = lon();
-		double integer_part;
-		double fractional_part;
-		
-		fractional_part = modf(lat_value, &integer_part) * 100000;
-		if (fractional_part < 0)
-			fractional_part = -fractional_part;
-		text_lat_decimal.set(to_string_dec_int(integer_part) + "." + to_string_dec_uint(fractional_part, 5));
-		fractional_part = modf(lon_value, &integer_part) * 100000;
-		if (fractional_part < 0)
-			fractional_part = -fractional_part;
-		text_lon_decimal.set(to_string_dec_int(integer_part) + "." + to_string_dec_uint(fractional_part, 5));
+
+		text_lat_decimal.set(to_string_decimal(lat_value, 5));
+		text_lon_decimal.set(to_string_decimal(lon_value, 5));
 	
 		if (on_change && report_change)
 			on_change(altitude(), lat_value, lon_value);
@@ -264,8 +256,13 @@ void GeoMapView::focus() {
 void GeoMapView::update_position(float lat, float lon, uint16_t angle) {
 	lat_ = lat;
 	lon_ = lon;
+	
+	// Stupid hack to avoid an event loop
+	geopos.set_report_change(false);
 	geopos.set_lat(lat_);
 	geopos.set_lon(lon_);
+	geopos.set_report_change(true);
+
 	geomap.set_angle(angle);
 	geomap.move(lon_, lat_);
 	geomap.set_dirty();

firmware/application/ui/ui_rssi.cpp

@@ -75,8 +75,9 @@ void RSSI::paint(Painter& painter) {
 		Color::black()
 	);
 	
-	if (pitch_rssi_enabled)
+	if (pitch_rssi_enabled) {
 		baseband::set_pitch_rssi((avg_ - raw_min) * 2000 / raw_delta, true);
+	}
 }
 
 void RSSI::set_pitch_rssi(bool enabled) {

firmware/application/ui/ui_transmitter.cpp

@@ -103,6 +103,7 @@ void TransmitterView::set_transmitting(const bool transmitting) {
 
 void TransmitterView::on_show() {
 	field_frequency.set_value(transmitter_model.tuning_frequency());
+	field_frequency_step.set_by_value(receiver_model.frequency_step());
 
 	field_gain.set_value(transmitter_model.tx_gain());
 	field_amp.set_value(transmitter_model.rf_amp() ? 14 : 0);
@@ -122,6 +123,7 @@ TransmitterView::TransmitterView(
 	
 	add_children({
 		&field_frequency,
+		&field_frequency_step,
 		&text_gain,
 		&field_gain,
 		&button_start,
@@ -157,6 +159,10 @@ TransmitterView::TransmitterView(
 		if (on_edit_frequency)
 			on_edit_frequency();
 	};
+	
+	field_frequency_step.on_change = [this](size_t, OptionsField::value_t v) {
+		this->field_frequency.set_step(v);
+	};
 
 	field_gain.on_change = [this](uint32_t tx_gain) {
 		on_tx_gain_changed(tx_gain);

firmware/application/ui/ui_transmitter.hpp

@@ -124,11 +124,11 @@ private:
 	};
 
 	Text text_bw {
-		{ 11 * 8, 1 * 8, 9 * 8, 1 * 16 },
-		"BW:   kHz"
+		{ 18 * 8, 1 * 8, 3 * 8, 1 * 16 },
+		"kHz"
 	};
 	NumberField field_bw {
-		{ 14 * 8, 1 * 8 },
+		{ 15 * 8, 1 * 8 },
 		3,
 		{ 1, 150 },
 		1,
@@ -152,6 +152,10 @@ private:
 		{ 21 * 8, 1 * 8, 9 * 8, 32 },
 		"START"
 	};
+	
+	FrequencyStepView field_frequency_step {
+		{ 10 * 8 - 4, 1 * 8 },
+	};
 
 	void on_tuning_frequency_changed(rf::Frequency f);
 	void on_channel_bandwidth_changed(uint32_t channel_bandwidth);

firmware/application/ui/ui_tv.cpp

@@ -182,7 +182,7 @@ void TVView::clear() {
 
 /* TVWidget *******************************************************/
 
-TVWidget::TVWidget(const bool cursor) {
+TVWidget::TVWidget() {
 	add_children({
 		&tv_view,
 		&field_xcorr

firmware/application/ui/ui_tv.hpp

@@ -92,7 +92,7 @@ class TVWidget : public View {
 public:
 	std::function<void(int32_t offset)> on_select { };
 	
-	TVWidget(const bool cursor = false);
+	TVWidget();
 
 	TVWidget(const TVWidget&) = delete;
 	TVWidget(TVWidget&&) = delete;

firmware/application/ui_navigation.cpp

@@ -34,6 +34,7 @@
 #include "ui_adsb_rx.hpp"
 #include "ui_adsb_tx.hpp"
 #include "ui_afsk_rx.hpp"
+#include "ui_aprs_rx.hpp"
 #include "ui_btle_rx.hpp"
 #include "ui_nrf_rx.hpp"
 #include "ui_aprs_tx.hpp"
@@ -67,7 +68,7 @@
 #include "ui_view_wav.hpp"
 #include "ui_whipcalc.hpp"
 
-#include "acars_app.hpp"
+//#include "acars_app.hpp"
 #include "ais_app.hpp"
 #include "analog_audio_app.hpp"
 #include "analog_tv_app.hpp"
@@ -349,13 +350,21 @@ InformationView::InformationView(
 	});
 
 	version.set_style(&style_infobar);
+
+	ltime.set_hide_clock(portapack::persistent_memory::hide_clock());
 	ltime.set_style(&style_infobar);
 	ltime.set_seconds_enabled(true);
-	ltime.set_date_enabled(false);
-
+	ltime.set_date_enabled(portapack::persistent_memory::clock_with_date());
 	set_dirty();
 }
 
+void InformationView::refresh() {
+	ltime.set_hide_clock(portapack::persistent_memory::hide_clock());
+	ltime.set_seconds_enabled(true);
+	ltime.set_date_enabled(portapack::persistent_memory::clock_with_date());	
+
+}
+
 /* Navigation ************************************************************/
 
 bool NavigationView::is_top() const {
@@ -386,6 +395,7 @@ void NavigationView::pop() {
 
 		update_view();
 	}
+
 }
 
 void NavigationView::pop_modal() {
@@ -468,7 +478,8 @@ ReceiversMenuView::ReceiversMenuView(NavigationView& nav) {
 		{ "POCSAG", 	ui::Color::green(),		&bitmap_icon_pocsag,	[&nav](){ nav.push<POCSAGAppView>(); } },
 		{ "Radiosnde", 	ui::Color::green(),		&bitmap_icon_sonde,		[&nav](){ nav.push<SondeView>(); } },
 		{ "TPMS Cars", 	ui::Color::green(),		&bitmap_icon_tpms,		[&nav](){ nav.push<TPMSAppView>(); } },
-		/*{ "APRS", 		ui::Color::dark_grey(),	&bitmap_icon_aprs,		[&nav](){ nav.push<NotImplementedView>(); } },
+		{ "APRS", 		ui::Color::green(),		&bitmap_icon_aprs,		[&nav](){ nav.push<APRSRXView>(); } }
+		/*
 		{ "DMR", 		ui::Color::dark_grey(),	&bitmap_icon_dmr,		[&nav](){ nav.push<NotImplementedView>(); } },
 		{ "SIGFOX", 	ui::Color::dark_grey(),	&bitmap_icon_fox,		[&nav](){ nav.push<NotImplementedView>(); } }, // SIGFRXView
 		{ "LoRa", 		ui::Color::dark_grey(),	&bitmap_icon_lora,		[&nav](){ nav.push<NotImplementedView>(); } },
@@ -604,6 +615,7 @@ SystemView::SystemView(
 		}
 		else{
 			add_child(&info_view);
+			info_view.refresh();
 		}
 		
 		this->status_view.set_back_enabled(!this->navigation_view.is_top());
@@ -625,7 +637,9 @@ SystemView::SystemView(
 		navigation_view.push<SystemMenuView>();
 		
 		if (portapack::persistent_memory::config_splash())
+		{
 			navigation_view.push<BMPView>();
+		}
 			status_view.set_back_enabled(false);
 			status_view.set_title_image_enabled(true);
 			status_view.set_dirty();
@@ -656,7 +670,8 @@ BMPView::BMPView(NavigationView& nav) {
 }
 
 void BMPView::paint(Painter&) {
-	portapack::display.drawBMP({(240 - 230) / 2, (320 - 50) / 2 - 10}, splash_bmp, false);
+	if(!portapack::display.drawBMP2({ 0, 0 }, "splash.bmp"))
+		portapack::display.drawBMP({(240 - 230) / 2, (320 - 50) / 2 - 10}, splash_bmp, false);
 }
 
 /* NotImplementedView ****************************************************/

firmware/application/ui_navigation.hpp

@@ -45,253 +45,252 @@
 
 using namespace sd_card;
 
-namespace ui {
+namespace ui
+{
 
-enum modal_t {
-	INFO = 0,
-	YESNO,
-	YESCANCEL,
-	ABORT
-};
-
-class NavigationView : public View {
-public:
-	std::function<void(const View&)> on_view_changed { };
-
-	NavigationView() = default;
-
-	NavigationView(const NavigationView&) = delete;
-	NavigationView(NavigationView&&) = delete;
-	NavigationView& operator=(const NavigationView&) = delete;
-	NavigationView& operator=(NavigationView&&) = delete;
-
-	bool is_top() const;
-
-	template<class T, class... Args>
-	T* push(Args&&... args) {
-		return reinterpret_cast<T*>(push_view(std::unique_ptr<View>(new T(*this, std::forward<Args>(args)...))));
-	}
-	template<class T, class... Args>
-	T* replace(Args&&... args) {
-		pop();
-		return reinterpret_cast<T*>(push_view(std::unique_ptr<View>(new T(*this, std::forward<Args>(args)...))));
-	}
-	
-	void push(View* v);
-	void replace(View* v);
-
-	void pop();
-	void pop_modal();
-
-	void display_modal(const std::string& title, const std::string& message);
-	void display_modal(const std::string& title, const std::string& message, const modal_t type, const std::function<void(bool)> on_choice = nullptr);
-
-	void focus() override;
-
-private:
-	std::vector<std::unique_ptr<View>> view_stack { };
-	Widget* modal_view { nullptr };
-
-	Widget* view() const;
-
-	void free_view();
-	void update_view();
-	View* push_view(std::unique_ptr<View> new_view);
-};
-
-class SystemStatusView : public View {
-public:
-	std::function<void(void)> on_back { };
-
-	SystemStatusView(NavigationView& nav);
-
-	void set_back_enabled(bool new_value);
-	void set_title_image_enabled(bool new_value);
-	void set_title(const std::string new_value);
-
-private:
-	static constexpr auto default_title = "";
-	
-	NavigationView& nav_;
-
-	Rectangle backdrop {
-		{ 0 * 8, 0 * 16, 240, 16 },
-		Color::dark_grey()
+	enum modal_t
+	{
+		INFO = 0,
+		YESNO,
+		YESCANCEL,
+		ABORT
 	};
 
-	ImageButton button_back {
-		{ 2, 0 * 16, 16, 16 },
-		&bitmap_icon_previous,
-		Color::white(),
-		Color::dark_grey()
+	class NavigationView : public View
+	{
+	public:
+		std::function<void(const View &)> on_view_changed{};
+
+		NavigationView() = default;
+
+		NavigationView(const NavigationView &) = delete;
+		NavigationView(NavigationView &&) = delete;
+		NavigationView &operator=(const NavigationView &) = delete;
+		NavigationView &operator=(NavigationView &&) = delete;
+
+		bool is_top() const;
+
+		template <class T, class... Args>
+		T *push(Args &&...args)
+		{
+			return reinterpret_cast<T *>(push_view(std::unique_ptr<View>(new T(*this, std::forward<Args>(args)...))));
+		}
+		template <class T, class... Args>
+		T *replace(Args &&...args)
+		{
+			pop();
+			return reinterpret_cast<T *>(push_view(std::unique_ptr<View>(new T(*this, std::forward<Args>(args)...))));
+		}
+
+		void push(View *v);
+		void replace(View *v);
+
+		void pop();
+		void pop_modal();
+
+		void display_modal(const std::string &title, const std::string &message);
+		void display_modal(const std::string &title, const std::string &message, const modal_t type, const std::function<void(bool)> on_choice = nullptr);
+
+		void focus() override;
+
+	private:
+		std::vector<std::unique_ptr<View>> view_stack{};
+		Widget *modal_view{nullptr};
+
+		Widget *view() const;
+
+		void free_view();
+		void update_view();
+		View *push_view(std::unique_ptr<View> new_view);
 	};
 
-	Text title {
-		{ 20, 0, 14 * 8, 1 * 16 },
-		default_title,
-	};
+	class SystemStatusView : public View
+	{
+	public:
+		std::function<void(void)> on_back{};
 
-	ImageButton button_title {
-		{2, 0, 80, 16},
-		&bitmap_titlebar_image,
-		Color::white(),
-		Color::dark_grey()
-	};
+		SystemStatusView(NavigationView &nav);
 
-	ImageButton button_speaker {
- 		{ 17 * 8, 0, 2 * 8, 1 * 16 },
- 		&bitmap_icon_speaker_mute,
- 		Color::light_grey(),
- 		Color::dark_grey()
- 	};
-	
-	ImageButton button_stealth {
-		{ 19 * 8, 0, 2 * 8, 1 * 16 },
-		&bitmap_icon_stealth,
-		Color::light_grey(),
-		Color::dark_grey()
-	};
-	
-	/*ImageButton button_textentry {
+		void set_back_enabled(bool new_value);
+		void set_title_image_enabled(bool new_value);
+		void set_title(const std::string new_value);
+
+	private:
+		static constexpr auto default_title = "";
+
+		NavigationView &nav_;
+
+		Rectangle backdrop{
+			{0 * 8, 0 * 16, 240, 16},
+			Color::dark_grey()};
+
+		ImageButton button_back{
+			{2, 0 * 16, 16, 16},
+			&bitmap_icon_previous,
+			Color::white(),
+			Color::dark_grey()};
+
+		Text title{
+			{20, 0, 14 * 8, 1 * 16},
+			default_title,
+		};
+
+		ImageButton button_title{
+			{2, 0, 80, 16},
+			&bitmap_titlebar_image,
+			Color::white(),
+			Color::dark_grey()};
+
+		ImageButton button_speaker{
+			{17 * 8, 0, 2 * 8, 1 * 16},
+			&bitmap_icon_speaker_mute,
+			Color::light_grey(),
+			Color::dark_grey()};
+
+		ImageButton button_stealth{
+			{19 * 8, 0, 2 * 8, 1 * 16},
+			&bitmap_icon_stealth,
+			Color::light_grey(),
+			Color::dark_grey()};
+
+		/*ImageButton button_textentry {
 		{ 170, 0, 2 * 8, 1 * 16 },
 		&bitmap_icon_unistroke,
 		Color::white(),
 		Color::dark_grey()
 	};*/
 
-	ImageButton button_camera {
-		{ 21 * 8, 0, 2 * 8, 1 * 16 },
-		&bitmap_icon_camera,
-		Color::white(),
-		Color::dark_grey()
+		ImageButton button_camera{
+			{21 * 8, 0, 2 * 8, 1 * 16},
+			&bitmap_icon_camera,
+			Color::white(),
+			Color::dark_grey()};
+
+		ImageButton button_sleep{
+			{23 * 8, 0, 2 * 8, 1 * 16},
+			&bitmap_icon_sleep,
+			Color::white(),
+			Color::dark_grey()};
+
+		ImageButton button_bias_tee{
+			{25 * 8, 0, 12, 1 * 16},
+			&bitmap_icon_biast_off,
+			Color::light_grey(),
+			Color::dark_grey()};
+
+		ImageButton button_clock_status{
+			{27 * 8, 0 * 16, 2 * 8, 1 * 16},
+			&bitmap_icon_clk_int,
+			Color::light_grey(),
+			Color::dark_grey()};
+
+		SDCardStatusView sd_card_status_view{
+			{28 * 8, 0 * 16, 2 * 8, 1 * 16}};
+
+		void on_speaker();
+		void on_stealth();
+		void on_bias_tee();
+		//void on_textentry();
+		void on_camera();
+		void on_title();
+		void refresh();
+		void on_clk();
+
+		MessageHandlerRegistration message_handler_refresh{
+			Message::ID::StatusRefresh,
+			[this](const Message *const p)
+			{
+				(void)p;
+				this->refresh();
+			}};
 	};
 
-	ImageButton button_sleep {
-		{ 23 * 8, 0, 2 * 8, 1 * 16 },
-		&bitmap_icon_sleep,
-		Color::white(),
-		Color::dark_grey()
-	};
-	
-	ImageButton button_bias_tee {
-		{ 25 * 8, 0, 12, 1 * 16 },
-		&bitmap_icon_biast_off,
-		Color::light_grey(),
-		Color::dark_grey()
-	};
-	
-	ImageButton button_clock_status {
-		{ 27 * 8, 0 * 16,  2 * 8, 1 * 16 },
-		&bitmap_icon_clk_int,
-		Color::light_grey(),
-		Color::dark_grey()
-	};
-	
-	SDCardStatusView sd_card_status_view {
-		{ 28 * 8, 0 * 16,  2 * 8, 1 * 16 }
+	class InformationView : public View
+	{
+	public:
+		InformationView(NavigationView &nav);
+		void refresh();
+
+	private:
+		static constexpr auto version_string = "v1.4.2";
+		NavigationView &nav_;
+
+		Rectangle backdrop{
+			{0, 0 * 16, 240, 16},
+			{33, 33, 33}};
+
+		Text version{
+			{2, 0, 11 * 8, 16},
+			version_string};
+
+		LiveDateTime ltime{
+			{86, 0, 19 * 8, 16}};
 	};
 
-	void on_speaker();
-	void on_stealth();
-	void on_bias_tee();
-	//void on_textentry();
-	void on_camera();
-	void on_title();
-	void refresh();
-	void on_clk();
-	
-	MessageHandlerRegistration message_handler_refresh {
-		Message::ID::StatusRefresh,
-		[this](const Message* const p) {
-			(void)p;
-			this->refresh();
-		}
-	};
-};
+	class BMPView : public View
+	{
+	public:
+		BMPView(NavigationView &nav);
+		void paint(Painter &) override;
+		void focus() override;
 
-class InformationView : public View {
-public:
-	InformationView(NavigationView& nav);
-	
-private:
-	static constexpr auto version_string = "v1.3.0";
-	NavigationView& nav_;
+	private:
+		Text text_info{
+			{4 * 8, 284, 20 * 8, 16},
+			"Version " VERSION_STRING};
 
-	Rectangle backdrop {
-		{ 0, 0 * 16, 240, 16 },
-		{33, 33, 33}
+		Button button_done{
+			{240, 0, 1, 1},
+			""};
 	};
 
-	Text version {
-		{2, 0, 11 * 8, 16},
-		version_string
+	class ReceiversMenuView : public BtnGridView
+	{
+	public:
+		ReceiversMenuView(NavigationView &nav);
+		std::string title() const override { return "Receivers"; };
 	};
-	
-	LiveDateTime ltime {
-		{174, 0, 8 * 8, 16}
+
+	class TransmittersMenuView : public BtnGridView
+	{
+	public:
+		TransmittersMenuView(NavigationView &nav);
+		std::string title() const override { return "Transmitters"; };
 	};
-};
 
-class BMPView : public View {
-public:
-	BMPView(NavigationView& nav);
-	void paint(Painter&) override;
-	void focus() override;
-
-private:
-	Text text_info {
-		{ 4*8, 284, 20 * 8, 16 },
-		"Version " VERSION_STRING
+	class UtilitiesMenuView : public BtnGridView
+	{
+	public:
+		UtilitiesMenuView(NavigationView &nav);
+		std::string title() const override { return "Utilities"; };
 	};
-	
-	Button button_done {
-		{ 240, 0, 1, 1 },
-		""
+
+	class SystemMenuView : public BtnGridView
+	{
+	public:
+		SystemMenuView(NavigationView &nav);
+
+	private:
+		void hackrf_mode(NavigationView &nav);
 	};
-};
 
-class ReceiversMenuView : public BtnGridView {
-public:
-	ReceiversMenuView(NavigationView& nav);
-	std::string title() const override { return "Receivers"; };
-};
+	class SystemView : public View
+	{
+	public:
+		SystemView(
+			Context &context,
+			const Rect parent_rect);
 
-class TransmittersMenuView : public BtnGridView {
-public:
-	TransmittersMenuView(NavigationView& nav);
-	std::string title() const override { return "Transmitters"; };
-};
+		Context &context() const override;
 
-class UtilitiesMenuView : public BtnGridView {
-public:
-	UtilitiesMenuView(NavigationView& nav);
-	std::string title() const override { return "Utilities"; };	
-};
+	private:
+		SystemStatusView status_view{navigation_view};
+		InformationView info_view{navigation_view};
+		NavigationView navigation_view{};
+		Context &context_;
+	};
 
-class SystemMenuView : public BtnGridView {
-public:
-	SystemMenuView(NavigationView& nav);
-private:
-	void hackrf_mode(NavigationView& nav);
-};
-
-class SystemView : public View {
-public:
-	SystemView(
-		Context& context,
-		const Rect parent_rect
-	);
-
-	Context& context() const override;
-
-private:
-	SystemStatusView status_view { navigation_view };
-	InformationView info_view { navigation_view };
-	NavigationView navigation_view { };
-	Context& context_;
-};
-
-/*class NotImplementedView : public View {
+	/*class NotImplementedView : public View {
 public:
 	NotImplementedView(NavigationView& nav);
 
@@ -309,43 +308,43 @@ private:
 	};
 };*/
 
-class ModalMessageView : public View {
-public:
-	ModalMessageView(
-		NavigationView& nav,
-		const std::string& title,
-		const std::string& message,
-		const modal_t type,
-		const std::function<void(bool)> on_choice
-	);
-	
-	void paint(Painter& painter) override;
-	void focus() override;
+	class ModalMessageView : public View
+	{
+	public:
+		ModalMessageView(
+			NavigationView &nav,
+			const std::string &title,
+			const std::string &message,
+			const modal_t type,
+			const std::function<void(bool)> on_choice);
 
-	std::string title() const override { return title_; };
+		void paint(Painter &painter) override;
+		void focus() override;
 
-private:
-	const std::string title_;
-	const std::string message_;
-	const modal_t type_;
-	const std::function<void(bool)> on_choice_;
+		std::string title() const override { return title_; };
 
-	Button button_ok {
-		{ 10 * 8, 14 * 16, 10 * 8, 48 },
-		"OK",
+	private:
+		const std::string title_;
+		const std::string message_;
+		const modal_t type_;
+		const std::function<void(bool)> on_choice_;
+
+		Button button_ok{
+			{10 * 8, 14 * 16, 10 * 8, 48},
+			"OK",
+		};
+
+		Button button_yes{
+			{5 * 8, 14 * 16, 8 * 8, 48},
+			"YES",
+		};
+
+		Button button_no{
+			{17 * 8, 14 * 16, 8 * 8, 48},
+			"NO",
+		};
 	};
-	
-	Button button_yes {
-		{ 5 * 8, 14 * 16, 8 * 8, 48 },
-		"YES",
-	};
-
-	Button button_no {
-		{ 17 * 8, 14 * 16, 8 * 8, 48 },
-		"NO",
-	};
-};
 
 } /* namespace ui */
 
-#endif/*__UI_NAVIGATION_H__*/
+#endif /*__UI_NAVIGATION_H__*/

firmware/baseband/CMakeLists.txt

@@ -113,6 +113,8 @@ set(CPPSRC
 	baseband_stats_collector.cpp
 	dsp_decimate.cpp
 	dsp_demodulate.cpp
+	dsp_hilbert.cpp
+	dsp_modulate.cpp
 	dsp_goertzel.cpp
 	matched_filter.cpp
 	spectrum_collector.cpp
@@ -125,6 +127,7 @@ set(CPPSRC
 	${COMMON}/dsp_fft.cpp
 	${COMMON}/dsp_fir_taps.cpp
 	${COMMON}/dsp_iir.cpp
+	${COMMON}/dsp_sos.cpp
 	fxpt_atan2.cpp
 	rssi.cpp
 	rssi_dma.cpp
@@ -312,6 +315,14 @@ set(MODE_CPPSRC
 	proc_afskrx.cpp
 )
 DeclareTargets(PAFR afskrx)
+
+### APRS RX
+
+set(MODE_CPPSRC
+	proc_aprsrx.cpp
+)
+DeclareTargets(PAPR aprsrx)
+
 ### NRF RX
 
 set(MODE_CPPSRC

firmware/baseband/channel_stats_collector.hpp

@@ -35,7 +35,7 @@ class ChannelStatsCollector {
 public:
 	template<typename Callback>
 	void feed(const buffer_c16_t& src, Callback callback) {
-		auto src_p = src.p;
+		void *src_p = src.p;
 		while(src_p < &src.p[src.count]) {
 			const uint32_t sample = *__SIMD32(src_p)++;
 			const uint32_t mag_sq = __SMUAD(sample, sample);

firmware/baseband/dsp_hilbert.cpp

@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2020 Belousov Oleg
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "dsp_hilbert.hpp"
+#include "dsp_sos_config.hpp"
+
+namespace dsp {
+
+HilbertTransform::HilbertTransform() {
+	n = 0;
+
+	sos_i.configure(half_band_lpf_config);
+	sos_q.configure(half_band_lpf_config);
+}
+
+void HilbertTransform::execute(float in, float &out_i, float &out_q) {
+	float a = 0, b = 0;
+	
+	switch (n) {
+		case 0:		a = in;		b = 0;		break;
+		case 1:		a = 0;		b = -in;	break;
+		case 2:		a = -in;	b = 0;		break;
+		case 3:		a = 0;		b = in;		break;
+	}
+	
+	float i = sos_i.execute(a) * 2.0f;
+	float q = sos_q.execute(b) * 2.0f;
+	
+	switch (n) {
+		case 0:		out_i = i;	out_q = q;	break;
+		case 1:		out_i = -q;	out_q = i;	break;
+		case 2:		out_i = -i;	out_q = -q;	break;
+		case 3:		out_i = q;	out_q = -i;	break;
+	}
+
+	n = (n + 1) % 4;
+}
+
+} /* namespace dsp */

firmware/baseband/dsp_hilbert.hpp

@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2020 Belousov Oleg
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __DSP_HILBERT_H__
+#define __DSP_HILBERT_H__
+
+#include "dsp_sos.hpp"
+#include "dsp_types.hpp"
+
+namespace dsp {
+
+class HilbertTransform {
+public:
+
+	HilbertTransform();
+	void execute(float in, float &out_i, float &out_q);
+
+private:
+	uint8_t			n = 0;
+	SOSFilter<5>	sos_i;
+	SOSFilter<5>	sos_q;
+};
+
+} /* namespace dsp */
+
+#endif/*__DSP_HILBERT_H__*/

firmware/baseband/dsp_modulate.cpp

@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2020 Belousov Oleg
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "dsp_modulate.hpp"
+#include "sine_table_int8.hpp"
+
+namespace dsp {
+namespace modulate {
+
+Modulator::~Modulator() {
+}
+
+Mode Modulator::get_mode() {
+	return mode;
+}
+
+void Modulator::set_mode(Mode new_mode) {
+	mode = new_mode;
+}
+
+void Modulator::set_over(uint32_t new_over) {
+    over = new_over;
+}
+
+///
+
+SSB::SSB() : hilbert() {
+	mode = Mode::LSB;
+}
+
+void SSB::execute(const buffer_s16_t& audio, const buffer_c8_t& buffer) {
+	int32_t		sample = 0;
+	int8_t		re = 0, im = 0;
+	
+	for (size_t counter = 0; counter < buffer.count; counter++) {
+		if (counter % 128 == 0) {
+			float	i = 0.0, q = 0.0;
+
+		    sample = audio.p[counter / over] >> 2;
+			//switch (mode) {
+				//case Mode::LSB:	
+			hilbert.execute(sample / 32768.0f, i, q);
+				//case Mode::USB:	hilbert.execute(sample / 32768.0f, q, i);
+				//default:	break;
+			//}
+
+			i *= 64.0f;
+			q *= 64.0f;
+			switch (mode) {
+				case Mode::LSB:	re = q;	im = i;	break;
+				case Mode::USB:	re = i;	im = q;	break;
+				default:	re = 0; im = 0;	break;
+			}
+			//re = q;
+			//im = i;
+			//break;
+		}
+		
+		buffer.p[counter] = { re, im };
+	}
+}
+
+///
+
+FM::FM() {
+	mode = Mode::FM;
+}
+
+void FM::set_fm_delta(uint32_t new_delta) {
+	fm_delta = new_delta;
+}
+
+void FM::execute(const buffer_s16_t& audio, const buffer_c8_t& buffer) {
+	int32_t		sample = 0;
+	int8_t		re, im;
+
+	for (size_t counter = 0; counter < buffer.count; counter++) {
+		if (counter % over == 0) {
+		    sample = audio.p[counter / over] >> 8;
+		    delta = sample * fm_delta;
+		}
+
+		phase += delta;
+		sphase = phase >> 24;
+
+		re = (sine_table_i8[(sphase + 64) & 255]);
+		im = (sine_table_i8[sphase]);
+		
+		buffer.p[counter] = { re, im };
+	}
+}
+
+AM::AM() {
+	mode = Mode::AM;
+}
+
+void AM::execute(const buffer_s16_t& audio, const buffer_c8_t& buffer) {
+	int32_t         sample = 0;
+	int8_t          re = 0, im = 0;
+	float		q = 0.0;
+	
+	for (size_t counter = 0; counter < buffer.count; counter++) {
+		if (counter % 128 == 0) {
+			sample = audio.p[counter / over] >> 2;
+		}
+
+		q = sample / 32768.0f;
+		q *= 64.0f;
+		switch (mode) {
+			case Mode::AM:	re = q + 20; im = q + 20; break;
+			case Mode::DSB:	re = q; im = q; break;
+			default:	break;
+		}
+		buffer.p[counter] = { re, im };
+	}
+}
+
+}
+}

firmware/baseband/dsp_modulate.hpp

@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2020 Belousov Oleg
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __DSP_MODULATE_H__
+#define __DSP_MODULATE_H__
+
+#include "dsp_types.hpp"
+#include "dsp_hilbert.hpp"
+
+namespace dsp {
+namespace modulate {
+
+enum class Mode {
+	None,
+	AM,
+	DSB,
+	LSB,
+	USB,
+	FM
+};
+
+///
+
+class Modulator {
+public:
+	virtual void execute(const buffer_s16_t& audio, const buffer_c8_t& buffer) = 0;
+	virtual ~Modulator();
+
+	Mode get_mode();
+	void set_mode(Mode new_mode);
+
+    void set_over(uint32_t new_over);
+
+protected:
+    uint32_t    over = 1;
+	Mode	    mode = Mode::None;
+};
+
+///
+
+class SSB : public Modulator {
+public:
+	SSB();
+
+	virtual void execute(const buffer_s16_t& audio, const buffer_c8_t& buffer);
+
+private:
+	dsp::HilbertTransform	hilbert;
+};
+
+///
+
+class FM : public Modulator {
+public:
+	FM();
+
+	virtual void execute(const buffer_s16_t& audio, const buffer_c8_t& buffer);
+	void set_fm_delta(uint32_t new_delta);
+
+///
+
+private:
+	uint32_t	fm_delta { 0 };
+	uint32_t	phase { 0 }, sphase { 0 };
+	int32_t		sample { 0 }, delta { };
+};
+
+class AM : public Modulator {
+public:
+        AM();
+
+        virtual void execute(const buffer_s16_t& audio, const buffer_c8_t& buffer);
+};
+
+} /* namespace modulate */
+} /* namespace dsp */
+
+#endif/*__DSP_MODULATE_H__*/

firmware/baseband/proc_adsbrx.cpp

@@ -32,115 +32,125 @@ using namespace adsb;
 	
 void ADSBRXProcessor::execute(const buffer_c8_t& buffer) {
 	int8_t re, im;
-	float mag;
+	uint32_t mag;
 	uint32_t c;
-	uint8_t level, bit, byte { };
-	//bool confidence;
-	bool first_in_window, last_in_window;
+	uint8_t bit, byte{};
 	
 	// This is called at 2M/2048 = 977Hz
 	// One pulse = 500ns = 2 samples
 	// One bit = 2 pulses = 1us = 4 samples
-	
+
 	if (!configured) return;
 	
 	for (size_t i = 0; i < buffer.count; i++) {
 		
 		// Compute sample's magnitude
-		re = buffer.p[i].real();
-		im = buffer.p[i].imag();
-		mag = __builtin_sqrtf((re * re) + (im * im)) * k;
-		
-		// Only used for preamble detection and visualisation
-		level = (mag < 0.3) ? 0 :		// Blank weak signals
-					(mag > prev_mag) ? 1 : 0;
-		
+		re = (int32_t)buffer.p[i].real(); // make re float and scale it
+		im = (int32_t)buffer.p[i].imag(); // make re float and scale it
+		mag = ((uint32_t)(re*re) + (uint32_t)(im*im));
+
 		if (decoding) {
 			// Decode
 			
 			// 1 bit lasts 2 samples
 			if (sample_count & 1) {
-				if ((prev_mag < threshold_low) && (mag < threshold_low)) {
-					// Both under window, silence.
-					if (null_count > 3) {
-						const ADSBFrameMessage message(frame);
-						shared_memory.application_queue.push(message);
-							
-						decoding = false;
-					} else
-						null_count++;
-						
-					//confidence = false;
-					if (prev_mag > mag)
-						bit = 1;
-					else
-						bit = 0;
-					
-				} else {
-					
-					null_count = 0;
-				
-					first_in_window = ((prev_mag >= threshold_low) && (prev_mag <= threshold_high));
-					last_in_window = ((mag >= threshold_low) && (mag <= threshold_high));
-					
-					if ((first_in_window && !last_in_window) || (!first_in_window && last_in_window)) {
-						//confidence = true;
-						if (prev_mag > mag)
-							bit = 1;
-						else
-							bit = 0;
-					} else {
-						//confidence = false;
-						if (prev_mag > mag)
-							bit = 1;
-						else
-							bit = 0;
-					}
+				if (bit_count >= msgLen)
+				{
+					const ADSBFrameMessage message(frame, amp);
+					shared_memory.application_queue.push(message);
+					decoding = false;
+					bit = (prev_mag > mag) ? 1 : 0;
+				}
+				else 
+				{
+					//confidence = true;
+					bit = (prev_mag > mag) ? 1 : 0;
 				}
 				
 				byte = bit | (byte << 1);
 				bit_count++;
+
+				// Perform checks at the end of the first byte
 				if (!(bit_count & 7)) {
-					// Got one byte
+
+					// Store the byte
 					frame.push_byte(byte);
-				}
-			}
+
+					// Check at the end of the first byte of the message
+					uint8_t df = (byte >> 3);
+					if ( (bit_count == 8) && !(df & 0x10) ) {
+						msgLen = 56; // DFs 16 or greater are long 112. DFs 15 or less are short 56.
+					}
+
+					// Abondon all frames that arent DF17 or DF18 extended squitters
+					if ( (bit_count == 8) && !((df == 17)||(df == 18)) ) {
+						decoding = false;
+						bit = (prev_mag > mag) ? 1 : 0;
+						frame.clear();
+					}
+				} // last bit of a byte
+			} // Second sample of each bit
 			sample_count++;
-		} else {
-			// Look for preamble
-			
-			// Shift
-			for (c = 0; c < (ADSB_PREAMBLE_LENGTH - 1); c++)
-				shifter[c] = shifter[c + 1];
-			shifter[15] = std::make_pair(mag, level);
-			
-			// Compare
-			for (c = 0; c < ADSB_PREAMBLE_LENGTH; c++) {
-				if (shifter[c].second != adsb_preamble[c])
-					break;
-			}
-				
-			if (c == ADSB_PREAMBLE_LENGTH) {
-				decoding = true;
-				sample_count = 0;
-				null_count = 0;
-				bit_count = 0;
-				frame.clear();
-				
-				// Compute preamble pulses power to set thresholds
-				threshold = (shifter[0].first + shifter[2].first + shifter[7].first + shifter[9].first) / 4;
-				threshold_high = threshold * 1.414;		// +3dB
-				threshold_low = threshold * 0.707;		// -3dB
-			}
 		}
-		
+
+		// Continue looking for preamble even if in a packet
+		// switch is new preamble id higher magnitude
+			
+		// Shift the preamble
+		for (c = 0; c < (ADSB_PREAMBLE_LENGTH ); c++) { shifter[c] = shifter[c + 1]; }
+		shifter[ADSB_PREAMBLE_LENGTH] = mag;
+			
+		// First check of relations between the first 10 samples
+		// representing a valid preamble. We don't even investigate further
+		// if this simple test is not passed
+		if (shifter[0] < shifter[1] && 
+			shifter[1] > shifter[2] &&
+			shifter[2] < shifter[3] &&
+			shifter[3] > shifter[4] &&
+			shifter[4] < shifter[1] &&
+			shifter[5] < shifter[1] &&
+			shifter[6] < shifter[1] &&
+			shifter[7] < shifter[1] &&
+			shifter[8] > shifter[9] &&
+			shifter[9] < shifter[10] &&
+			shifter[10]> shifter[11] )
+		{
+			// The samples between the two spikes must be < than the average
+			// of the high spikes level. We don't test bits too near to
+			// the high levels as signals can be out of phase so part of the
+			// energy can be in the near samples
+			int32_t thisAmp = (shifter[1] + shifter[3] + shifter[8] + shifter[10]);
+			int32_t high = thisAmp / 9;
+			if (
+				shifter[5] < high &&
+				shifter[6] < high &&
+				// Similarly samples in the range 11-13 must be low, as it is the
+				// space between the preamble and real data. Again we don't test
+				// bits too near to high levels, see above
+				shifter[12] < high &&
+				shifter[13] < high &&
+				shifter[14] < high )
+			{
+				if ((decoding == false) ||					   // New preamble
+					((decoding == true) && (thisAmp > amp)))   // Higher power than existing packet
+				{
+					decoding = true;
+					msgLen = 112;
+					amp = thisAmp;
+					sample_count = 0;
+					bit_count = 0;
+					frame.clear();
+				}
+			} // 4 & 5 low and 11-14 low
+		} // Check for preamble pattern
+
+		// Store mag for next time
 		prev_mag = mag;
 	}
 }
 
 void ADSBRXProcessor::on_message(const Message* const message) {
 	if (message->id == Message::ID::ADSBConfigure) {
-		null_count = 0;
 		bit_count = 0;
 		sample_count = 0;
 		decoding = false;
@@ -148,8 +158,10 @@ void ADSBRXProcessor::on_message(const Message* const message) {
 	}
 }
 
+#ifndef _WIN32
 int main() {
 	EventDispatcher event_dispatcher { std::make_unique<ADSBRXProcessor>() };
 	event_dispatcher.run();
 	return 0;
 }
+#endif

firmware/baseband/proc_adsbrx.hpp

@@ -40,8 +40,6 @@ public:
 	void on_message(const Message* const message) override;
 
 private:
-	static constexpr float k = 1.0f / 128.0f;
-	
 	static constexpr size_t baseband_fs = 2000000;
 	
 	BasebandThread baseband_thread { baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Receive };
@@ -49,16 +47,17 @@ private:
 	
 	ADSBFrame frame { };
 	bool configured { false };
-	float prev_mag { 0 };
-	float threshold { }, threshold_low { }, threshold_high { };
-	size_t null_count { 0 }, bit_count { 0 }, sample_count { 0 };
-	std::pair<float, uint8_t> shifter[ADSB_PREAMBLE_LENGTH];
+	uint32_t prev_mag { 0 };
+	size_t bit_count { 0 }, sample_count { 0 };
+	size_t msgLen{ 112 };
+	uint32_t shifter[ADSB_PREAMBLE_LENGTH+1];
 	bool decoding { };
 	bool preamble { }, active { };
     uint16_t bit_pos { 0 };
     uint8_t cur_bit { 0 };
 	uint32_t sample { 0 };
-	int8_t re { }, im { };
+	int32_t re { }, im { };
+	int32_t amp {0};
 };
 
 #endif

firmware/baseband/proc_am_audio.cpp

@@ -87,7 +87,7 @@ void NarrowbandAMAudio::configure(const AMConfigureMessage& message) {
 	constexpr size_t decim_2_output_fs = decim_2_input_fs / decim_2_decimation_factor;
 
 	constexpr size_t channel_filter_input_fs = decim_2_output_fs;
-	const size_t channel_filter_output_fs = channel_filter_input_fs / channel_filter_decimation_factor;
+	//const size_t channel_filter_output_fs = channel_filter_input_fs / channel_filter_decimation_factor;
 
 	decim_0.configure(message.decim_0_filter.taps, 33554432);
 	decim_1.configure(message.decim_1_filter.taps, 131072);

firmware/baseband/proc_am_tv.cpp

@@ -43,14 +43,15 @@ void WidebandFMAudio::execute(const buffer_c8_t& buffer) {
 	const buffer_c16_t buffer_c16 {spectrum.data(),spectrum.size(),buffer.sampling_rate};
 	channel_spectrum.feed(buffer_c16);
 
-        int8_t re, im;
-	int8_t mag;
+        int8_t re ;
+	//int8_t im;  
+	//int8_t mag;
 
         for (size_t i = 0; i < 128; i++) 
 	{
 		re = buffer.p[i].real();
-		im = buffer.p[i].imag();
-		mag = __builtin_sqrtf((re * re) + (im * im)) ;
+		//im = buffer.p[i].imag();
+		//mag = __builtin_sqrtf((re * re) + (im * im)) ;
 		const unsigned int v =  re + 127.0f; //timescope
 		audio_spectrum.db[i] = std::max(0U, std::min(255U, v));
 	}
@@ -75,6 +76,7 @@ void WidebandFMAudio::on_message(const Message* const message) {
 }
 
 void WidebandFMAudio::configure(const WFMConfigureMessage& message) {
+	(void)message; // avoid warning
 	configured = true;
 }
 

firmware/baseband/proc_aprsrx.cpp

@@ -0,0 +1,257 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2016 Furrtek
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "proc_aprsrx.hpp"
+#include "portapack_shared_memory.hpp"
+
+#include "event_m4.hpp"
+
+#include "stdio.h"
+
+void APRSRxProcessor::execute(const buffer_c8_t& buffer) {
+	// This is called at 3072000 / 2048 = 1500Hz
+
+	if (!configured) return;
+	
+	// FM demodulation
+	const auto decim_0_out = decim_0.execute(buffer, dst_buffer);				// 2048 / 8 = 256 (512 I/Q samples)
+	const auto decim_1_out = decim_1.execute(decim_0_out, dst_buffer);			// 256 / 8 = 32 (64 I/Q samples)
+	const auto channel_out = channel_filter.execute(decim_1_out, dst_buffer);	// 32 / 2 = 16 (32 I/Q samples)
+
+	feed_channel_stats(channel_out);
+	
+	auto audio = demod.execute(channel_out, audio_buffer);
+	
+	audio_output.write(audio);
+
+	// Audio signal processing
+	for (size_t c = 0; c < audio.count; c++) {
+
+		const int32_t sample_int = audio.p[c] * 32768.0f;
+		int32_t current_sample = __SSAT(sample_int, 16);
+		
+		current_sample /= 128;
+		
+		// Delay line put
+		delay_line[delay_line_index & 0x3F] = current_sample;
+		
+		// Delay line get, and LPF
+		sample_mixed = (delay_line[(delay_line_index - (samples_per_bit/2)) & 0x3F] * current_sample) / 4; 
+		sample_filtered = prev_mixed + sample_mixed + (prev_filtered / 2);
+		
+		delay_line_index++;
+		
+		prev_filtered = sample_filtered;
+		prev_mixed = sample_mixed;		
+
+		// Slice
+		sample_bits <<= 1;
+
+		uint8_t bit = (sample_filtered < -20) ? 1 : 0;
+		sample_bits |= bit;
+
+/*
+		int16_t scaled = bit == 1 ? 32767 : -32767;
+
+		if( stream ) {
+			const size_t bytes_to_write = sizeof(scaled) * 1;
+			const auto result = stream->write(&scaled, bytes_to_write);
+		}
+*/
+		
+		// Check for "clean" transition: either 0011 or 1100
+		if ((((sample_bits >> 2) ^ sample_bits) & 3) == 3) {
+			// Adjust phase
+			if (phase < 0x8000)
+				phase += 0x800;		// Is this a proper value ?
+			else
+				phase -= 0x800;
+		}
+		
+		phase += phase_inc;
+		
+		if (phase >= 0x10000) {
+			phase &= 0xFFFF;
+			
+			if (true) {			
+				uint8_t bit;					
+				if(__builtin_popcount(sample_bits & 0xFF) >= 0x05){
+					bit = 0x1;
+				}
+				else {
+					bit = 0x0;
+				}
+
+				if(parse_bit(bit)){
+					parse_packet();
+				}						
+			}
+		}
+	}
+}
+
+void APRSRxProcessor::parse_packet(){
+	//validate crc	
+	if(packet_buffer_size >= aprs::APRS_MIN_LENGTH){
+		uint16_t crc = 0xFFFF;
+
+		for(size_t i = 0; i < packet_buffer_size; i++){			
+			uint8_t byte = packet_buffer[i];
+			crc = ((crc >> 8) ^ crc_ccitt_tab[(crc ^ byte) & 0xFF]) & 0xFFFF;
+		}	
+
+		if(crc == 0xF0B8){		
+			parse_ax25();
+		}
+	}	
+}
+
+void APRSRxProcessor::parse_ax25(){	
+	aprs_packet.clear();
+	aprs_packet.set_valid_checksum(true);
+
+	for(size_t i = 0; i < packet_buffer_size; i++){
+		aprs_packet.set(i, packet_buffer[i]);
+	}
+
+	APRSPacketMessage packet_message { aprs_packet };
+	shared_memory.application_queue.push(packet_message);
+}
+
+bool APRSRxProcessor::parse_bit(const uint8_t current_bit){
+	uint8_t decoded_bit = ~(current_bit ^ last_bit) & 0x1;
+	last_bit = current_bit;
+
+    //int16_t log = decoded_bit == 0 ? -32768 : 32767;
+    //if(stream){
+    //    const size_t bytes_to_write = sizeof(log) * 1;
+    //    const auto result = stream->write(&log, bytes_to_write);
+    //}
+
+	if(decoded_bit & 0x1){
+		if(ones_count < 8){
+			ones_count++;
+		}
+	}
+	else {
+		if(ones_count > 6){ //not valid
+			state = WAIT_FLAG;
+			current_byte = 0;
+			ones_count = 0;
+			byte_index = 0;
+			packet_buffer_size = 0;
+			return false;
+		}
+		else if(ones_count == 6){ //flag
+			bool done = false;
+			if(state == IN_FRAME){				
+				done = true;
+			}
+			else {
+				packet_buffer_size = 0;
+			}
+			state = WAIT_FRAME;
+			current_byte = 0;
+			ones_count = 0;
+			byte_index = 0;			
+
+			return done;
+		}
+		else if(ones_count == 5){ //bit stuff
+			ones_count = 0;
+			return false;
+		}
+		else {
+			ones_count = 0;
+		}
+	}
+
+	//store
+	current_byte = current_byte >> 1;
+	current_byte |= (decoded_bit == 0x1 ? 0x80 : 0x0);
+	byte_index++;
+
+	if(byte_index >= 8){
+		byte_index = 0;
+		if(state == WAIT_FRAME){
+			state = IN_FRAME;
+		}
+
+		if(state == IN_FRAME){	
+			if(packet_buffer_size + 1 >= 256){
+				state = WAIT_FLAG;
+				current_byte = 0;
+				ones_count = 0;
+				byte_index = 0;
+				packet_buffer_size = 0;
+				return false;
+			}
+			packet_buffer[packet_buffer_size++] = current_byte;
+		}
+	}
+
+	return false;
+}
+
+void APRSRxProcessor::on_message(const Message* const message) {
+	if (message->id == Message::ID::APRSRxConfigure)
+		configure(*reinterpret_cast<const APRSRxConfigureMessage*>(message));
+	if(message->id == Message::ID::CaptureConfig)
+		capture_config(*reinterpret_cast<const CaptureConfigMessage*>(message));	
+}
+
+void APRSRxProcessor::capture_config(const CaptureConfigMessage& message) {
+	if( message.config ) {
+		//stream = std::make_unique<StreamInput>(message.config);
+		audio_output.set_stream(std::make_unique<StreamInput>(message.config));
+	} else {
+		//stream.reset();
+		audio_output.set_stream(nullptr);		
+	}
+}
+
+void APRSRxProcessor::configure(const APRSRxConfigureMessage& message) {	
+	decim_0.configure(taps_11k0_decim_0.taps, 33554432);
+	decim_1.configure(taps_11k0_decim_1.taps, 131072);
+	channel_filter.configure(taps_11k0_channel.taps, 2);
+	demod.configure(audio_fs, 5000);
+
+	audio_output.configure(audio_24k_hpf_300hz_config, audio_24k_deemph_300_6_config, 0);
+	
+	samples_per_bit = audio_fs / message.baudrate;
+	
+	phase_inc = (0x10000 * message.baudrate) / audio_fs;
+	phase = 0;
+	
+	// Delay line
+	delay_line_index = 0;
+
+	state = WAIT_FLAG;
+	
+	configured = true;
+}
+
+int main() {
+	EventDispatcher event_dispatcher { std::make_unique<APRSRxProcessor>() };
+	event_dispatcher.run();
+	return 0;
+}

firmware/baseband/proc_aprsrx.hpp

@@ -0,0 +1,148 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2016 Furrtek
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __PROC_APRSRX_H__
+#define __PROC_APRSRX_H__
+
+#include "baseband_processor.hpp"
+#include "baseband_thread.hpp"
+#include "rssi_thread.hpp"
+
+#include "dsp_decimate.hpp"
+#include "dsp_demodulate.hpp"
+#include "stream_input.hpp"
+
+#include "audio_output.hpp"
+
+#include "fifo.hpp"
+#include "message.hpp"
+
+#include  "aprs_packet.hpp"
+
+static uint16_t crc_ccitt_tab[256] = {
+    0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
+	0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
+	0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
+	0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
+	0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
+	0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
+	0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
+	0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
+	0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
+	0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
+	0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
+	0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
+	0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
+	0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
+	0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
+	0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
+	0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
+	0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
+	0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
+	0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
+	0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
+	0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
+	0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
+	0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
+	0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
+	0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
+	0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
+	0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
+	0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
+	0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
+	0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
+	0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
+};
+
+class APRSRxProcessor : public BasebandProcessor {
+public:
+	void execute(const buffer_c8_t& buffer) override;
+
+	void on_message(const Message* const message) override;
+	
+private:
+	static constexpr size_t baseband_fs = 3072000;
+	static constexpr size_t audio_fs = baseband_fs / 8 / 8 / 2;
+		
+	size_t samples_per_bit { };
+	
+	enum State {
+		WAIT_FLAG,
+		WAIT_FRAME,
+		IN_FRAME
+	};
+	
+	BasebandThread baseband_thread { baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Receive };
+	RSSIThread rssi_thread { NORMALPRIO + 10 };
+	
+	std::array<complex16_t, 512> dst { };
+	const buffer_c16_t dst_buffer {
+		dst.data(),
+		dst.size()
+	};
+	std::array<float, 32> audio { };
+	const buffer_f32_t audio_buffer {
+		audio.data(),
+		audio.size()
+	};
+	
+	// Array size ok down to 375 bauds (24000 / 375)
+	std::array<int32_t, 64> delay_line { 0 };
+	
+	dsp::decimate::FIRC8xR16x24FS4Decim8 decim_0 { };
+	dsp::decimate::FIRC16xR16x32Decim8 decim_1 { };
+	dsp::decimate::FIRAndDecimateComplex channel_filter { };
+	
+	std::unique_ptr<StreamInput> stream { };
+
+	dsp::demodulate::FM demod { };
+	
+	AudioOutput audio_output { };
+
+	State state { };
+	size_t delay_line_index { };	
+	uint32_t bit_counter { 0 };
+	uint32_t word_bits { 0 };
+	uint32_t sample_bits { 0 };
+	uint32_t phase { }, phase_inc { };
+	int32_t sample_mixed { }, prev_mixed { }, sample_filtered { }, prev_filtered { };
+	uint8_t last_bit;
+	uint8_t ones_count = 0;
+	uint8_t current_byte = 0;
+	uint8_t byte_index = 0;
+	uint8_t packet_buffer[256];
+	size_t packet_buffer_size = 0;
+
+	bool configured { false };
+	bool wait_start { };
+	bool bit_value { };
+
+	aprs::APRSPacket aprs_packet;
+
+	void configure(const APRSRxConfigureMessage& message);
+	void capture_config(const CaptureConfigMessage& message);
+	void parse_packet();
+	bool parse_bit(const uint8_t bit);
+	void parse_ax25();
+};
+
+#endif/*__PROC_TPMS_H__*/

firmware/baseband/proc_audiotx.hpp

@@ -50,7 +50,7 @@ private:
 	int32_t sample { 0 }, delta { };
 	int8_t re { 0 }, im { 0 };
 	
-	size_t progress_interval_samples, progress_samples = 0;
+	size_t progress_interval_samples = 0 , progress_samples = 0;
 	
 	bool configured { false };
 	uint32_t bytes_read { 0 };

firmware/baseband/proc_btlerx.cpp

@@ -53,7 +53,6 @@ void BTLERxProcessor::execute(const buffer_c8_t& buffer) {
 	auto audio_oversampled = demod.execute(buffer_c16, work_audio_buffer);*/
 	// Audio signal processing
 	for (size_t c = 0; c < audio_oversampled.count; c++) {
-		int result;
 
 		/*const int32_t sample_int = audio_oversampled.p[c] * 32768.0f;
 		int32_t current_sample = __SSAT(sample_int, 16);
@@ -107,9 +106,9 @@ void BTLERxProcessor::execute(const buffer_c8_t& buffer) {
 				uint8_t packet_data[500];
 				int packet_length;
 				uint32_t packet_crc;
-				uint32_t calced_crc;
+				//uint32_t calced_crc; // NOTE: restore when CRC is passing
 				uint64_t packet_addr_l;
-				uint32_t result;
+				//uint32_t result; // NOTE: restore when CRC is passing
 				uint8_t crc[3];
 				uint8_t packet_header_arr[2];
 
@@ -255,21 +254,21 @@ void BTLERxProcessor::execute(const buffer_c8_t& buffer) {
 				    counter = counter + 1;
 				}
 				for (v=0;v<3;v++) crc_result=(crc_result<<8)|crc[v];
-				calced_crc = crc_result;
+				//calced_crc = crc_result; // NOTE: restore when CRC is passing
 
 				packet_crc=0;
 				for (int c=0;c<3;c++) packet_crc=(packet_crc<<8)|packet_data[packet_length+2+c];
 
 				if (packet_addr_l==0x8E89BED6)
-				//if (packet_crc==calced_crc)
+				//if (packet_crc==calced_crc) // NOTE: restore when CRC is passing
 				{
 				    uint8_t mac_data[6];
 				    int counter = 0;
 				    for (int i = 7; i >= 2; i--) 
 				    {
 				        uint8_t byte_temp6 = (uint8_t) (((packet_data[i] * 0x0802LU & 0x22110LU) | (packet_data[i] * 0x8020LU & 0x88440LU)) * 0x10101LU >> 16);
-					//result = byte_temp6;
-					mac_data[counter] = byte_temp6;
+					//result = byte_temp6; // NOTE: restore when CRC is passing
+					mac_data[counter] = byte_temp6; 
 					counter = counter + 1;
 				    }
 
@@ -325,6 +324,7 @@ void BTLERxProcessor::on_message(const Message* const message) {
 }
 
 void BTLERxProcessor::configure(const BTLERxConfigureMessage& message) {	
+	(void)message; //avoid warning
 	decim_0.configure(taps_200k_wfm_decim_0.taps, 33554432);
 	decim_1.configure(taps_200k_wfm_decim_1.taps, 131072);
 	demod.configure(audio_fs, 5000);

firmware/baseband/proc_capture.cpp

@@ -44,7 +44,11 @@ void CaptureProcessor::execute(const buffer_c8_t& buffer) {
 
 	if( stream ) {
 		const size_t bytes_to_write = sizeof(*decimator_out.p) * decimator_out.count;
-		const auto result = stream->write(decimator_out.p, bytes_to_write);
+		const size_t written = stream->write(decimator_out.p, bytes_to_write);
+		if( written != bytes_to_write )
+		{
+			//TODO eventually report error somewhere
+		}
 	}
 
 	feed_channel_stats(channel);

firmware/baseband/proc_mictx.cpp

@@ -35,6 +35,7 @@ void MicTXProcessor::execute(const buffer_c8_t& buffer){
 	if (!configured) return;
 	
 	audio_input.read_audio_buffer(audio_buffer);
+	modulator->execute(audio_buffer, buffer);
 
 	for (size_t i = 0; i < buffer.count; i++) {
 		
@@ -70,6 +71,7 @@ void MicTXProcessor::execute(const buffer_c8_t& buffer){
 			sample = beep_gen.process(0);
 		}
 		
+		/*
 		sample = tone_gen.process(sample);
 		
 		// FM
@@ -87,6 +89,7 @@ void MicTXProcessor::execute(const buffer_c8_t& buffer){
 		}
 		
 		buffer.p[i] = { re, im };
+		*/
 	}
 }
 
@@ -96,7 +99,40 @@ void MicTXProcessor::on_message(const Message* const msg) {
 	
 	switch(msg->id) {
 		case Message::ID::AudioTXConfig:
-			fm_delta = config_message.deviation_hz * (0xFFFFFFUL / baseband_fs);
+			if (fm_enabled) {
+				dsp::modulate::FM *fm = new dsp::modulate::FM();
+				
+				fm->set_fm_delta(config_message.deviation_hz * (0xFFFFFFUL / baseband_fs));
+				modulator = fm;
+			}
+			
+			if (usb_enabled) {
+				modulator = new dsp::modulate::SSB();
+				modulator->set_mode(dsp::modulate::Mode::USB);
+			}
+			
+			if (lsb_enabled) {
+				modulator = new dsp::modulate::SSB();
+				modulator->set_mode(dsp::modulate::Mode::LSB);
+			}
+			if (am_enabled) {
+				modulator = new dsp::modulate::AM();
+				modulator->set_mode(dsp::modulate::Mode::AM);
+			}
+			if (dsb_enabled) {
+				modulator = new dsp::modulate::AM();
+				modulator->set_mode(dsp::modulate::Mode::DSB);
+			}
+
+            modulator->set_over(baseband_fs / 24000);
+			
+			am_enabled = config_message.am_enabled;
+			usb_enabled = config_message.usb_enabled;
+			lsb_enabled = config_message.lsb_enabled;
+			dsb_enabled = config_message.dsb_enabled;
+			if (!am_enabled || !usb_enabled || !lsb_enabled || !dsb_enabled) {
+				fm_enabled = true;
+			}
 			
 			audio_gain = config_message.audio_gain;
 			divider = config_message.divider;

firmware/baseband/proc_mictx.hpp

@@ -27,6 +27,7 @@
 #include "baseband_thread.hpp"
 #include "audio_input.hpp"
 #include "tone_gen.hpp"
+#include "dsp_modulate.hpp"
 
 class MicTXProcessor : public BasebandProcessor {
 public:
@@ -50,7 +51,14 @@ private:
 	AudioInput audio_input { };
 	ToneGen tone_gen { };
 	ToneGen beep_gen { };
-	
+	dsp::modulate::Modulator *modulator;
+
+	bool am_enabled { false };
+	bool fm_enabled { true };
+	bool usb_enabled { false };
+	bool lsb_enabled { false };
+	bool dsb_enabled { false };
+
 	uint32_t divider { };
 	float audio_gain { };
 	uint64_t power_acc { 0 };

firmware/baseband/proc_nrfrx.cpp

@@ -37,7 +37,6 @@ void NRFRxProcessor::execute(const buffer_c8_t& buffer) {
 	auto audio_oversampled = demod.execute(decim_0_out, work_audio_buffer);
 	// Audio signal processing
 	for (size_t c = 0; c < audio_oversampled.count; c++) {
-		int result;
                 int g_srate = 4; //4 for 250KPS
 		//int g_srate = 1; //1 for 1MPS, not working yet
 		int32_t current_sample = audio_oversampled.p[c]; //if I directly use this, some results can pass crc but not correct.
@@ -48,11 +47,8 @@ void NRFRxProcessor::execute(const buffer_c8_t& buffer) {
 
 		skipSamples = skipSamples - 1;
 
-
 		if (skipSamples<1)
 		{
-				
-
 			int32_t threshold_tmp=0;
 			for (int c=0;c<8*g_srate;c++)
 			{
@@ -272,6 +268,7 @@ void NRFRxProcessor::on_message(const Message* const message) {
 }
 
 void NRFRxProcessor::configure(const NRFRxConfigureMessage& message) {	
+	(void)message; //avoir unused warning
 	decim_0.configure(taps_200k_wfm_decim_0.taps, 33554432);
 	decim_1.configure(taps_200k_wfm_decim_1.taps, 131072);
 	demod.configure(audio_fs, 5000);

firmware/baseband/proc_pocsag.cpp

@@ -28,6 +28,9 @@
 
 #include <cstdint>
 #include <cstddef>
+#include <algorithm>    // std::max
+#include <cmath>
+
 
 void POCSAGProcessor::execute(const buffer_c8_t& buffer) {
 	// This is called at 1500Hz
@@ -39,114 +42,45 @@ void POCSAGProcessor::execute(const buffer_c8_t& buffer) {
 	const auto decim_1_out = decim_1.execute(decim_0_out, dst_buffer);
 	const auto channel_out = channel_filter.execute(decim_1_out, dst_buffer);
 	auto audio = demod.execute(channel_out, audio_buffer);
-	//audio_output.write(audio);
+	smooth.Process(audio.p, audio.count); // Smooth the data to  make decoding more accurate
+	audio_output.write(audio);
 	
-	for (uint32_t c = 0; c < 16; c++) {
-		
-		const int32_t sample_int = audio.p[c] * 32768.0f;
-		const int32_t audio_sample = __SSAT(sample_int, 16);
-		
-		slicer_sr <<= 1;
-		if (phase == 0)
-			slicer_sr |= (audio_sample < 0);		// Do we need hysteresis ?
-		else
-			slicer_sr |= !(audio_sample < 0);
-			
-		// Detect transitions to adjust clock
-		if ((slicer_sr ^ (slicer_sr >> 1)) & 1) {
-			if (sphase < (0x8000u - sphase_delta_half))
-				sphase += sphase_delta_eighth;
-			else
-				sphase -= sphase_delta_eighth;
-		}
-		
-		sphase += sphase_delta;
-		
-		// Symbol time elapsed
-		if (sphase >= 0x10000u) {
-			sphase &= 0xFFFFu;
-			
-			rx_data <<= 1;
-			rx_data |= (slicer_sr & 1);
-			
-			switch (rx_state) {
-				
-				case WAITING:
-					if (rx_data == 0xAAAAAAAA) {
-						rx_state = PREAMBLE;
-						sync_timeout = 0;
-					}
-					break;
-				
-				case PREAMBLE:
-					if (sync_timeout < POCSAG_TIMEOUT) {
-						sync_timeout++;
+	processDemodulatedSamples(audio.p, 16);
+	extractFrames();
 
-						if (rx_data == POCSAG_SYNCWORD) {
-							packet.clear();
-							codeword_count = 0;
-							rx_bit = 0;
-							msg_timeout = 0;
-							rx_state = SYNC;
-						}
-						
-					} else {
-						// Timeout here is normal (end of message)
-						rx_state = WAITING;
-						//push_packet(pocsag::PacketFlag::TIMED_OUT);
-					}
-					break;
-				
-				case SYNC:
-					if (msg_timeout < POCSAG_BATCH_LENGTH) {
-						msg_timeout++;
-						rx_bit++;
-						
-						if (rx_bit >= 32) {
-							rx_bit = 0;
-							
-							// Got a complete codeword
-							
-							//pocsag_brute_repair(&s->l2.pocsag, &rx_data);
-							
-							packet.set(codeword_count, rx_data);
-							
-							if (codeword_count < 15) {
-								codeword_count++;
-							} else {
-								push_packet(pocsag::PacketFlag::NORMAL);
-								rx_state = PREAMBLE;
-								sync_timeout = 0;
-							}
-						}
-					} else {
-						packet.set(0, codeword_count);	// Replace first codeword with count, for debug
-						push_packet(pocsag::PacketFlag::TIMED_OUT);
-						rx_state = WAITING;
-					}
-					break;
-
-				default:
-					break;
-			}
-		}
-	}
 }
 
-void POCSAGProcessor::push_packet(pocsag::PacketFlag flag) {
-	packet.set_bitrate(bitrate);
-	packet.set_flag(flag);
-	packet.set_timestamp(Timestamp::now());
-	const POCSAGPacketMessage message(packet);
-	shared_memory.application_queue.push(message);
+// ====================================================================
+//
+// ====================================================================
+int POCSAGProcessor::OnDataWord(uint32_t word, int pos)
+{
+	packet.set(pos, word);
+	return 0;
+}
+
+// ====================================================================
+//
+// ====================================================================
+int POCSAGProcessor::OnDataFrame(int len, int baud)
+{
+	if (len > 0)
+	{
+		packet.set_bitrate(baud);
+		packet.set_flag(pocsag::PacketFlag::NORMAL);
+		packet.set_timestamp(Timestamp::now());
+		const POCSAGPacketMessage message(packet);
+		shared_memory.application_queue.push(message);
+	}
+	return 0;
 }
 
 void POCSAGProcessor::on_message(const Message* const message) {
 	if (message->id == Message::ID::POCSAGConfigure)
-		configure(*reinterpret_cast<const POCSAGConfigureMessage*>(message));
+		configure();
 }
 
-void POCSAGProcessor::configure(const POCSAGConfigureMessage& message) {
+void POCSAGProcessor::configure() {
 	constexpr size_t decim_0_input_fs = baseband_fs;
 	constexpr size_t decim_0_output_fs = decim_0_input_fs / decim_0.decimation_factor;
 
@@ -162,18 +96,442 @@ void POCSAGProcessor::configure(const POCSAGConfigureMessage& message) {
 	decim_1.configure(taps_11k0_decim_1.taps, 131072);
 	channel_filter.configure(taps_11k0_channel.taps, 2);
 	demod.configure(demod_input_fs, 4500);
-	//audio_output.configure(false);
+	// Smoothing should be roughly sample rate over max baud
+	// 24k / 3.2k is 7.5
+	smooth.SetSize(8);
+	audio_output.configure(false);
 
-	bitrate = message.bitrate;
-	phase = message.phase;
-	sphase_delta = 0x10000u * bitrate / POCSAG_AUDIO_RATE;
-	sphase_delta_half = sphase_delta / 2;			// Just for speed
-	sphase_delta_eighth = sphase_delta / 8;
-	
-	rx_state = WAITING;
+	// Set up the frame extraction, limits of baud
+	setFrameExtractParams(demod_input_fs, 4000, 300, 32);
+
+	// Mark the class as ready to accept data
 	configured = true;
 }
 
+
+
+// -----------------------------
+// Frame extractraction methods
+// -----------------------------
+#define BAUD_STABLE (104)
+#define MAX_CONSEC_SAME (32)
+#define MAX_WITHOUT_SINGLE (64)
+#define MAX_BAD_TRANS (10)
+
+#define M_SYNC				(0x7cd215d8)
+#define M_NOTSYNC			(0x832dea27)
+
+#define M_IDLE				(0x7a89c197)
+
+// ====================================================================
+//
+// ====================================================================
+inline int bitsDiff(unsigned long left, unsigned long right)
+{
+	unsigned long xord = left ^ right;
+	int count = 0;
+	for (int i = 0; i < 32; i++)
+	{
+		if ((xord & 0x01) != 0) ++count;
+		xord = xord >> 1;
+	}
+	return(count);
+
+}
+
+
+// ====================================================================
+//
+// ====================================================================
+void POCSAGProcessor::initFrameExtraction()
+{
+	m_averageSymbolLen_1024 = m_maxSymSamples_1024;
+	m_lastStableSymbolLen_1024 = m_minSymSamples_1024;
+
+	m_badTransitions = 0;
+	m_bitsStart = 0;
+	m_bitsEnd = 0;
+	m_inverted = false;
+
+	resetVals();
+}
+
+// ====================================================================
+//
+// ====================================================================
+void POCSAGProcessor::resetVals()
+{
+	// Reset the parameters
+	// --------------------
+	m_goodTransitions = 0;
+	m_badTransitions = 0;
+	m_averageSymbolLen_1024 = m_maxSymSamples_1024;
+	m_shortestGoodTrans_1024 = m_maxSymSamples_1024;
+	m_valMid = 0;
+
+	// And reset the counts
+	// --------------------
+	m_lastTransPos_1024 = 0;
+	m_lastBitPos_1024 = 0;
+	m_lastSample = 0;
+	m_sampleNo = 0;
+	m_nextBitPos_1024 = m_maxSymSamples_1024;
+	m_nextBitPosInt = (long)m_nextBitPos_1024;
+
+	// Extraction
+	m_fifo.numBits = 0;
+	m_gotSync = false;
+	m_numCode = 0;
+}
+
+// ====================================================================
+//
+// ====================================================================
+void POCSAGProcessor::setFrameExtractParams(long a_samplesPerSec, long a_maxBaud, long a_minBaud, long maxRunOfSameValue)
+{
+	m_samplesPerSec = a_samplesPerSec;
+	m_minSymSamples_1024 = (uint32_t)(1024.0f * (float)a_samplesPerSec / (float)a_maxBaud);
+	m_maxSymSamples_1024 = (uint32_t)(1024.0f*(float)a_samplesPerSec / (float)a_minBaud);
+	m_maxRunOfSameValue = maxRunOfSameValue;
+
+	m_shortestGoodTrans_1024 = m_maxSymSamples_1024;
+	m_averageSymbolLen_1024 = m_maxSymSamples_1024;
+	m_lastStableSymbolLen_1024 = m_minSymSamples_1024;
+
+	m_nextBitPos_1024 = m_averageSymbolLen_1024 / 2;
+	m_nextBitPosInt = m_nextBitPos_1024 >> 10;
+
+	initFrameExtraction();
+}
+
+// ====================================================================
+//
+// ====================================================================
+int POCSAGProcessor::processDemodulatedSamples(float * sampleBuff, int noOfSamples)
+{
+	bool transition = false;
+	uint32_t samplePos_1024 = 0;
+	uint32_t len_1024 = 0;
+
+	// Loop through the block of data
+	// ------------------------------
+	for (int pos = 0; pos < noOfSamples; ++pos)
+	{
+		m_sample = sampleBuff[pos];
+		m_valMid += (m_sample - m_valMid) / 1024.0f;
+
+		++m_sampleNo;
+
+		// Detect Transition
+		// -----------------
+		transition = ! ((m_lastSample < m_valMid) ^ (m_sample >= m_valMid)); // use XOR for speed
+
+		// If this is a transition
+		// -----------------------
+		if (transition)
+		{
+			// Calculate samples since last trans
+			// ----------------------------------
+			int32_t fractional_1024 = (int32_t)(((m_sample - m_valMid)*1024) / (m_sample - m_lastSample));
+			if (fractional_1024 < 0) { fractional_1024 = -fractional_1024; }
+
+			samplePos_1024 = (m_sampleNo<<10)-fractional_1024;
+			len_1024 = samplePos_1024 - m_lastTransPos_1024;
+			m_lastTransPos_1024 = samplePos_1024;
+
+			// If symbol is large enough to be valid
+			// -------------------------------------
+			if (len_1024 > m_minSymSamples_1024)
+			{
+				// Check for shortest good transition
+				// ----------------------------------
+				if ((len_1024 < m_shortestGoodTrans_1024) &&
+					(m_goodTransitions < BAUD_STABLE))	// detect change of symbol size
+				{
+					int32_t fractionOfShortest_1024 = (len_1024<<10) / m_shortestGoodTrans_1024;
+
+					// If currently at half the baud rate
+					// ----------------------------------
+					if ((fractionOfShortest_1024 > 410) && (fractionOfShortest_1024 < 614)) // 0.4 and 0.6
+					{
+						m_averageSymbolLen_1024 /= 2;
+						m_shortestGoodTrans_1024 = len_1024;
+					}
+					// If currently at the wrong baud rate
+					// -----------------------------------
+					else if (fractionOfShortest_1024 < 768) // 0.75
+					{
+						m_averageSymbolLen_1024 = len_1024;
+						m_shortestGoodTrans_1024 = len_1024;
+						m_goodTransitions = 0;
+						m_lastSingleBitPos_1024 = samplePos_1024 - len_1024;
+					}
+				}
+
+				// Calc the number of bits since events
+				// ------------------------------------
+				int32_t halfSymbol_1024 = m_averageSymbolLen_1024 / 2;
+				int bitsSinceLastTrans = max((uint32_t)1, (len_1024+halfSymbol_1024) / m_averageSymbolLen_1024 );
+				int bitsSinceLastSingle = (((m_sampleNo<<10)-m_lastSingleBitPos_1024) + halfSymbol_1024) / m_averageSymbolLen_1024;
+
+				// Check for single bit
+				// --------------------
+				if (bitsSinceLastTrans == 1)
+				{
+					m_lastSingleBitPos_1024 = samplePos_1024;
+				}
+
+				// If too long since last transition
+				// ---------------------------------
+				if (bitsSinceLastTrans > MAX_CONSEC_SAME)
+				{
+					resetVals();
+				}
+				// If too long sice last single bit
+				// --------------------------------
+				else if (bitsSinceLastSingle > MAX_WITHOUT_SINGLE)
+				{
+					resetVals();
+				}
+				else
+				{
+					// If this is a good transition
+					// ----------------------------
+					int32_t offsetFromExtectedTransition_1024 = len_1024 - (bitsSinceLastTrans*m_averageSymbolLen_1024);
+					if (offsetFromExtectedTransition_1024 < 0) { offsetFromExtectedTransition_1024 = -offsetFromExtectedTransition_1024; }
+					if (offsetFromExtectedTransition_1024 < ((int32_t)m_averageSymbolLen_1024 / 4)) // Has to be within 1/4 of symbol to be good
+					{
+						++m_goodTransitions;
+						uint32_t bitsCount = min((uint32_t)BAUD_STABLE, m_goodTransitions);
+
+						uint32_t propFromPrevious = m_averageSymbolLen_1024*bitsCount;
+						uint32_t propFromCurrent = (len_1024 / bitsSinceLastTrans);
+						m_averageSymbolLen_1024 = (propFromPrevious + propFromCurrent) / (bitsCount + 1);
+						m_badTransitions = 0;
+						//if ( len < m_shortestGoodTrans ){m_shortestGoodTrans = len;}
+						// Store the old symbol size
+						if (m_goodTransitions >= BAUD_STABLE) 
+						{ 
+							m_lastStableSymbolLen_1024 = m_averageSymbolLen_1024; 
+						}
+					}
+				}
+
+				// Set the point of the last bit if not yet stable
+				// -----------------------------------------------
+				if ((m_goodTransitions < BAUD_STABLE) || (m_badTransitions > 0))
+				{
+					m_lastBitPos_1024 = samplePos_1024 - (m_averageSymbolLen_1024 / 2);
+				}
+
+				// Calculate the exact positiom of the next bit
+				// --------------------------------------------
+				int32_t thisPlusHalfsymbol_1024 = samplePos_1024 + (m_averageSymbolLen_1024/2);
+				int32_t lastPlusSymbol = m_lastBitPos_1024 + m_averageSymbolLen_1024;
+				m_nextBitPos_1024 = lastPlusSymbol + ((thisPlusHalfsymbol_1024 - lastPlusSymbol) / 16);
+
+				// Check for bad pos error
+				// -----------------------
+				if (m_nextBitPos_1024 < samplePos_1024) m_nextBitPos_1024 += m_averageSymbolLen_1024;
+
+				// Calculate integer sample after next bit
+				// ---------------------------------------
+				m_nextBitPosInt = (m_nextBitPos_1024>>10) + 1;
+
+			} // symbol is large enough to be valid
+			else
+			{
+				// Bad transition, so reset the counts
+				// -----------------------------------
+				++m_badTransitions;
+				if (m_badTransitions > MAX_BAD_TRANS)
+				{
+					resetVals();
+				}
+			}
+		}  // end of if transition
+
+		// Reached the point of the next bit
+		// ---------------------------------
+		if (m_sampleNo >= m_nextBitPosInt)
+		{
+			// Everything is good so extract a bit
+			// -----------------------------------
+			if (m_goodTransitions > 20)
+			{
+				// Store value at the center of bit
+				// --------------------------------
+				storeBit();
+			}
+			// Check for long 1 or zero
+			// ------------------------
+			uint32_t bitsSinceLastTrans = ((m_sampleNo<<10) - m_lastTransPos_1024) / m_averageSymbolLen_1024;
+			if (bitsSinceLastTrans > m_maxRunOfSameValue) 
+			{ 
+				resetVals(); 
+			}
+
+			// Store the point of the last bit
+			// -------------------------------
+			m_lastBitPos_1024 = m_nextBitPos_1024;
+
+			// Calculate the exact point of the next bit
+			// -----------------------------------------
+			m_nextBitPos_1024 += m_averageSymbolLen_1024;
+
+			// Look for the bit after the next bit pos
+			// ---------------------------------------
+			m_nextBitPosInt = (m_nextBitPos_1024>>10) + 1;
+
+		} // Reached the point of the next bit
+
+		m_lastSample = m_sample;
+
+	} // Loop through the block of data
+
+	return getNoOfBits();
+}
+
+// ====================================================================
+//
+// ====================================================================
+void POCSAGProcessor::storeBit()
+{
+	if (++m_bitsStart >= BIT_BUF_SIZE) { m_bitsStart = 0; }
+
+	// Calculate the bit value
+	float sample = (m_sample + m_lastSample) / 2;
+	//int32_t sample_1024 = m_sample_1024;
+	bool bit = sample > m_valMid;
+
+	// If buffer not full
+	if (m_bitsStart != m_bitsEnd)
+	{
+		// Decide on output val
+		if (bit)
+		{
+			m_bits[m_bitsStart] = 0;
+		}
+		else
+		{
+			m_bits[m_bitsStart] = 1;
+		}
+	}
+	// Throw away bits if the buffer is full
+	else
+	{
+		if (--m_bitsStart <= -1) 
+		{ 
+			m_bitsStart = BIT_BUF_SIZE - 1; 
+		}
+	}
+}
+
+// ====================================================================
+//
+// ====================================================================
+int POCSAGProcessor::extractFrames()
+{
+	int msgCnt = 0;
+	// While there is unread data in the bits buffer
+	//----------------------------------------------
+	while (getNoOfBits() > 0)
+	{
+		m_fifo.codeword = (m_fifo.codeword << 1) + getBit();
+		m_fifo.numBits++;
+
+		// If number of bits in fifo equals 32
+		//------------------------------------
+		if (m_fifo.numBits >= 32)
+		{
+			// Not got sync
+			// ------------
+			if (!m_gotSync)
+			{
+				if (bitsDiff(m_fifo.codeword, M_SYNC) <= 2)
+				{
+					m_inverted = false;
+					m_gotSync = true;
+					m_numCode = -1;
+					m_fifo.numBits = 0;
+				}
+				else if (bitsDiff(m_fifo.codeword, M_NOTSYNC) <= 2)
+				{
+					m_inverted = true;
+					m_gotSync = true;
+					m_numCode = -1;
+					m_fifo.numBits = 0;
+				}
+				else
+				{
+					// Cause it to load one more bit
+					m_fifo.numBits = 31;
+				}
+			} // Not got sync
+			else
+			{
+				// Increment the word count
+				// ------------------------
+				++m_numCode; // It got set to -1 when a sync was found, now count the 16 words
+				uint32_t val = m_inverted ? ~m_fifo.codeword : m_fifo.codeword;
+				OnDataWord(val, m_numCode);
+
+				// If at the end of a 16 word block
+				// --------------------------------
+				if (m_numCode >= 15)
+				{
+					msgCnt += OnDataFrame(m_numCode+1, (m_samplesPerSec<<10) / m_lastStableSymbolLen_1024);
+					m_gotSync = false;
+					m_numCode = -1;
+				}
+				m_fifo.numBits = 0;
+			}
+		} // If number of bits in fifo equals 32
+	} // While there is unread data in the bits buffer
+	return msgCnt;
+} // extractFrames
+
+// ====================================================================
+//
+// ====================================================================
+short POCSAGProcessor::getBit()
+{
+	if (m_bitsEnd != m_bitsStart)
+	{
+		if (++m_bitsEnd >= BIT_BUF_SIZE) 
+		{ 
+			m_bitsEnd = 0; 
+		}
+		return m_bits[m_bitsEnd];
+	}
+	else
+	{
+		return -1;
+	}
+}
+
+// ====================================================================
+//
+// ====================================================================
+int POCSAGProcessor::getNoOfBits()
+{
+	int bits = m_bitsEnd - m_bitsStart;
+	if (bits < 0) { bits += BIT_BUF_SIZE; }
+	return bits;
+}
+
+// ====================================================================
+//
+// ====================================================================
+uint32_t POCSAGProcessor::getRate()
+{
+	return ((m_samplesPerSec<<10)+512) / m_lastStableSymbolLen_1024;
+}
+
+
+// ====================================================================
+//
+// ====================================================================
 int main() {
 	EventDispatcher event_dispatcher { std::make_unique<POCSAGProcessor>() };
 	event_dispatcher.run();

firmware/baseband/proc_pocsag.hpp

@@ -40,25 +40,100 @@
 #include "portapack_shared_memory.hpp"
 
 #include <cstdint>
+#include <bitset> 
+using namespace std;
+
+// Class used to smooth demodulated waveform prior to decoding
+// -----------------------------------------------------------
+template <class ValType, class CalcType>
+class SmoothVals
+{
+protected:
+	ValType *	m_lastVals;	// Previoius N values
+	int			m_size;		// The size N
+	CalcType	m_sumVal;	// Running sum of lastVals
+	int			m_pos;		// Current position in last vals ring buffer
+	int			m_count;    //
 
-class POCSAGProcessor : public BasebandProcessor {
 public:
+	SmoothVals() : m_lastVals(NULL), m_size(1), m_sumVal(0), m_pos(0), m_count(0)
+	{
+		m_lastVals = new ValType[m_size];
+	}
+
+	// --------------------------------------------------
+	// --------------------------------------------------
+	virtual ~SmoothVals()
+	{
+		delete[] m_lastVals;
+	}
+
+	// --------------------------------------------------
+	// Set size of smoothing
+	// --------------------------------------------------
+	void SetSize(int size)
+	{
+		m_size = std::max(size, 1);
+		m_pos = 0;
+		delete[] m_lastVals;
+		m_lastVals = new ValType[m_size];
+		m_sumVal = 0;
+	}
+
+	// --------------------------------------------------
+	// Get size of smoothing
+	// --------------------------------------------------
+	int Size() { return m_size; }
+
+	// --------------------------------------------------
+	// In place processing
+	// --------------------------------------------------
+	void Process(ValType * valBuff, int numVals)
+	{
+		ValType tmpVal;
+
+		if (m_count > (1024*10))
+		{
+			// Recalculate the sum value occasionaly, stops accumulated errors when using float
+			m_count = 0;
+			m_sumVal = 0;
+			for (int i = 0; i < m_size; ++i) { m_sumVal += (CalcType)m_lastVals[i]; }
+		}
+
+		// Use a rolling smoothed value while processing the buffer
+		for (int buffPos = 0; buffPos < numVals; ++buffPos)
+		{
+			m_pos = (m_pos + 1);								// Increment the position in the stored values
+			if (m_pos >= m_size) { m_pos = 0; }					// loop if reached the end of the stored values 
+
+			m_sumVal -= (CalcType)m_lastVals[m_pos];			// Subtract the oldest value
+			m_lastVals[m_pos] = valBuff[buffPos];				// Store the new value
+			m_sumVal += (CalcType)m_lastVals[m_pos];			// Add on the new value
+
+			tmpVal = (ValType)(m_sumVal / m_size);			    // Scale by number of values smoothed
+			valBuff[buffPos] = tmpVal;
+		}
+
+		m_count += numVals;
+	}
+};
+
+
+
+// --------------------------------------------------
+// Class to process base band data to pocsag frames
+// --------------------------------------------------
+class POCSAGProcessor : public BasebandProcessor{
+public:
+
 	void execute(const buffer_c8_t& buffer) override;
 	
 	void on_message(const Message* const message) override;
 
-private:
-	enum rx_states {
-		WAITING = 0,
-		PREAMBLE = 32,
-		SYNC = 64,
-		//LOSING_SYNC = 65,
-		//LOST_SYNC = 66,
-		//ADDRESS = 67,
-		//MESSAGE = 68,
-		//END_OF_MESSAGE = 69
-	};
+	int OnDataFrame(int len, int baud);
+	int OnDataWord(uint32_t word, int pos);
 
+private:
 	static constexpr size_t baseband_fs = 3072000;
 
 	BasebandThread baseband_thread { baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Receive };
@@ -79,28 +154,71 @@ private:
 	dsp::decimate::FIRC16xR16x32Decim8 decim_1 { };
 	dsp::decimate::FIRAndDecimateComplex channel_filter { };
 	dsp::demodulate::FM demod { };
+	SmoothVals<float, float> smooth;
 	
-	//AudioOutput audio_output { };
+	AudioOutput audio_output { };
 
-	uint32_t sync_timeout { 0 };
-	uint32_t msg_timeout { 0 };
-
-	uint32_t slicer_sr { 0 };
-	uint32_t sphase { 0 };
-	uint32_t sphase_delta { 0 };
-	uint32_t sphase_delta_half { 0 };
-	uint32_t sphase_delta_eighth { 0 };
-	uint32_t rx_data { 0 };
-	uint32_t rx_bit { 0 };
 	bool configured = false;
-	rx_states rx_state { WAITING };
-	pocsag::BitRate bitrate { pocsag::BitRate::FSK1200 };
-	bool phase;
-	uint32_t codeword_count { 0 };
 	pocsag::POCSAGPacket packet { };
-	
-	void push_packet(pocsag::PacketFlag flag);
-	void configure(const POCSAGConfigureMessage& message);
+
+	void configure();
+
+	// ----------------------------------------
+	// Frame extractraction methods and members
+	// ----------------------------------------
+private:
+	void initFrameExtraction();
+	struct FIFOStruct {
+		unsigned long	codeword;
+		int				numBits;
+	};
+
+	#define BIT_BUF_SIZE (64)
+
+	void resetVals();
+	void setFrameExtractParams(long a_samplesPerSec, long a_maxBaud = 8000, long a_minBaud = 200, long maxRunOfSameValue = 32);
+
+	int	 processDemodulatedSamples(float * sampleBuff, int noOfSamples);
+	int  extractFrames();
+
+	void	storeBit();
+	short	getBit();
+
+	int		getNoOfBits();
+	uint32_t getRate();
+
+	uint32_t	m_averageSymbolLen_1024{0};
+	uint32_t	m_lastStableSymbolLen_1024{0};
+
+	uint32_t m_samplesPerSec{0};
+	uint32_t m_goodTransitions{0};
+	uint32_t m_badTransitions{0};
+
+	uint32_t m_sampleNo{0};
+	float  m_sample{0};
+	float  m_valMid{0.0f};
+	float  m_lastSample{0.0f};
+
+	uint32_t  m_lastTransPos_1024{0};
+	uint32_t  m_lastSingleBitPos_1024{0};
+
+	uint32_t m_nextBitPosInt{0}; // Integer rounded up version to save on ops
+	uint32_t m_nextBitPos_1024{0};
+	uint32_t m_lastBitPos_1024{0};
+
+	uint32_t m_shortestGoodTrans_1024{0};
+	uint32_t m_minSymSamples_1024{0};
+	uint32_t m_maxSymSamples_1024{0};
+	uint32_t m_maxRunOfSameValue{0};
+
+	bitset<(size_t)BIT_BUF_SIZE> m_bits{0};
+	long		m_bitsStart{0};
+	long		m_bitsEnd{0};
+
+	FIFOStruct		m_fifo{0,0};
+	bool			m_gotSync{false};
+	int				m_numCode{0};
+	bool			m_inverted{false};
 	
 };
 

firmware/baseband/proc_sonde.cpp

@@ -26,9 +26,16 @@
 
 #include "event_m4.hpp"
 
+#include "audio_output.hpp"
+
 SondeProcessor::SondeProcessor() {
+
 	decim_0.configure(taps_11k0_decim_0.taps, 33554432);
 	decim_1.configure(taps_11k0_decim_1.taps, 131072);
+
+	audio_output.configure(false);
+
+	tone_gen.configure(BEEP_BASE_FREQ, 1.0, ToneGen::tone_type::sine, AUDIO_SAMPLE_RATE);
 }
 
 void SondeProcessor::execute(const buffer_c8_t& buffer) {
@@ -47,10 +54,97 @@ void SondeProcessor::execute(const buffer_c8_t& buffer) {
 			clock_recovery_fsk_4800(mf.get_output());
 		}
 	}
+
+	if(pitch_rssi_enabled) {
+		if(beep_play) {
+			// if we let the buffer underrun, for some reason
+			// once it starts looping it ignores zero (silence)
+			// samples, so we need to keep feeding the buffer
+			// and not be able to take advantage of the circular
+			// buffer loop:
+			//beep_play = false;
+			generate_beep();
+		}
+		
+		if(silence_play) {
+			//silence_play = false;
+			generate_silence();
+		}
+	}
+}
+
+void SondeProcessor::on_message(const Message* const msg) {
+	switch(msg->id) {		
+		case Message::ID::RequestSignal:
+			if ((*reinterpret_cast<const RequestSignalMessage*>(msg)).signal == RequestSignalMessage::Signal::BeepRequest) {
+				float rssi_ratio = (float) last_rssi / (float) RSSI_CEILING;
+				int beep_duration = 0;
+
+				if(rssi_ratio <= PROPORTIONAL_BEEP_THRES) {
+					beep_duration = BEEP_MIN_DURATION;
+				}
+				else if(rssi_ratio < 1) {
+					beep_duration =  (int) rssi_ratio * BEEP_DURATION_RANGE + BEEP_MIN_DURATION;
+				}
+				else {
+					beep_duration =  BEEP_DURATION_RANGE + BEEP_MIN_DURATION;
+				}
+				
+				play_beep();
+				chThdSleepMilliseconds(beep_duration);
+				stop_beep();
+			}		
+			break;
+
+		case Message::ID::PitchRSSIConfigure:
+			pitch_rssi_config(*reinterpret_cast<const PitchRSSIConfigureMessage*>(msg));
+			break;
+
+		default:
+			break;
+	}
+}
+
+void SondeProcessor::play_beep() {
+	beep_play = true;
+	silence_play = false;
+}
+
+void SondeProcessor::stop_beep() {
+	beep_play = false;
+	silence_play = true;
+}
+
+void SondeProcessor::generate_beep() {
+	// here we let the samples be created using the ToneGen class:
+
+	for(uint8_t i = 0; i < sizeof(audio_buffer.p); i++) {
+		audio_buffer.p[i] = (int16_t) ((tone_gen.process(0) >> 16) & 0x0000FFFF);
+	}
+
+	audio_output.write(audio_buffer);
+}
+
+void SondeProcessor::generate_silence() {
+	for(uint8_t i = 0; i < sizeof(audio_buffer.p); i++) {
+		audio_buffer.p[i] = 0;
+	}
+
+	audio_output.write(audio_buffer);
+}
+
+void SondeProcessor::pitch_rssi_config(const PitchRSSIConfigureMessage& message) {
+	pitch_rssi_enabled = message.enabled;
+
+	uint32_t freq = (int) ((float) message.rssi * (float) RSSI_PITCH_WEIGHT + (float) BEEP_BASE_FREQ);
+
+	last_rssi = message.rssi;
+	tone_gen.configure(freq, 1.0, ToneGen::tone_type::sine, AUDIO_SAMPLE_RATE);
 }
 
 int main() {
 	EventDispatcher event_dispatcher { std::make_unique<SondeProcessor>() };
 	event_dispatcher.run();
+
 	return 0;
 }

firmware/baseband/proc_sonde.hpp

@@ -88,19 +88,51 @@
 #include "message.hpp"
 #include "portapack_shared_memory.hpp"
 
+#include "audio_output.hpp"
+#include "tone_gen.hpp"
+
+#include "buffer.hpp"
+
 #include <cstdint>
 #include <cstddef>
 #include <bitset>
 
+
+#define BEEP_MIN_DURATION 			60
+#define BEEP_DURATION_RANGE 		100
+#define BEEP_BASE_FREQ				200
+#define RSSI_CEILING	 			1000
+#define PROPORTIONAL_BEEP_THRES		0.8
+#define RSSI_PITCH_WEIGHT			0.5
+#define AUDIO_SAMPLE_RATE			24000
+
 class SondeProcessor : public BasebandProcessor {
 public:
 	SondeProcessor();
 	
 	void execute(const buffer_c8_t& buffer) override;
-
+	void on_message(const Message* const msg);
 private:
+
 	static constexpr size_t baseband_fs = 2457600;
-	
+
+	std::array<int16_t, 32> audio { };
+
+	const buffer_s16_t audio_buffer {
+		(int16_t*) audio.data(),
+		sizeof(audio) / sizeof(int16_t)
+	};
+
+	AudioOutput audio_output { };
+
+	bool beep_play { false };
+	bool silence_play { false };
+	bool pitch_rssi_enabled { false };
+
+	uint32_t last_rssi { 0 };
+
+	ToneGen tone_gen { };
+
 	BasebandThread baseband_thread { baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Receive };
 	RSSIThread rssi_thread { NORMALPRIO + 10 };
 
@@ -149,6 +181,23 @@ private:
 			shared_memory.application_queue.push(message);
 		}
 	};
+
+	void play_beep();
+	void stop_beep();
+	
+	/**
+	 * Used for filling the audio buffer with the waveform
+	 * generated by the ToneGen class:
+	 * 
+	 */
+	void generate_beep();
+
+	/**
+	 * Used for filling the audio buffer with silence:
+	 */
+	void generate_silence();
+	
+	void pitch_rssi_config(const PitchRSSIConfigureMessage& message);
 };
 
 #endif/*__PROC_ERT_H__*/

firmware/baseband/spectrum_collector.cpp

@@ -27,8 +27,6 @@
 #include "event_m4.hpp"
 #include "portapack_shared_memory.hpp"
 
-#include "event_m4.hpp"
-
 #include <algorithm>
 
 void SpectrumCollector::on_message(const Message* const message) {
@@ -105,24 +103,38 @@ void SpectrumCollector::post_message(const buffer_c16_t& data) {
 	}
 }
 
-template<typename T>
+/* 3 types of Windowing time domain shapes declaration , but only used Hamming  ,  shapes for  FFT  
+    GCC10 compile sintax error c/m  (1/2), 
+          The primary diff. between const and constexpr variables is that 
+          the initialization of a const var can be deferred until run time. 
+	      A constexpr var. must be initialized at compile time. ... 
+	      A var. can be declared with constexpr , when it has a literal type and is initialized.
+	 GCC compile sintax error c/m (2/2)
+ 	      Static assert --> Tests a software assertion at compile time for debugging.
+		  we keep the same safety  compile protection , just changing slightly the sintax  checking that the size of the called array is power of 2.
+	      if the bool  "constant expression" is TRUE (normal case) , the declaration has no effect.
+		  if the bool  "constant expression" is FALSE (abnormal array size) , it is aborted the compile with a msg error. 
+		  	  */ 
+
+
+template<typename T> // Although currently we are not using that Windowing shape, we apply the same GCC10 compile error c/m 
 static typename T::value_type spectrum_window_none(const T& s, const size_t i) {
-	static_assert(power_of_two(s.size()), "Array size must be power of 2");
+static_assert(power_of_two(ARRAY_ELEMENTS(s)), "Array number of elements must be power of 2");   // c/m compile error GCC10 , OK for all GCC versions. 
 	return s[i];
 };
 
-template<typename T>
+template<typename T>   // Currently we are calling and using that Window shape.
 static typename T::value_type spectrum_window_hamming_3(const T& s, const size_t i) {
-	static_assert(power_of_two(s.size()), "Array size must be power of 2");
-	constexpr size_t mask = s.size() - 1;
+    static_assert(power_of_two(ARRAY_ELEMENTS(s)), "Array number of elements must be power of 2");   // c/m compile error GCC10 , OK for all GCC versions. 
+	const size_t mask = s.size() - 1;          // c/m compile error GCC10 , constexpr->const
 	// Three point Hamming window.
 	return s[i] * 0.54f + (s[(i-1) & mask] + s[(i+1) & mask]) * -0.23f;
 };
 
-template<typename T>
+template<typename T>   // Although currently we are not using that Windowing shape, we apply the same GCC10 compile error c/m  
 static typename T::value_type spectrum_window_blackman_3(const T& s, const size_t i) {
-	static_assert(power_of_two(s.size()), "Array size must be power of 2");
-	constexpr size_t mask = s.size() - 1;
+    static_assert(power_of_two(ARRAY_ELEMENTS(s)), "Array number of elements must be power of 2");   // c/m compile error GCC10 , OK for all GCC versions. 
+    const size_t mask = s.size() - 1;          // c/m compile error GCC10 , constexpr->const
 	// Three term Blackman window.
 	constexpr float alpha = 0.42f;
 	constexpr float beta = 0.5f * 0.5f;

firmware/baseband/spectrum_collector.hpp

@@ -22,6 +22,9 @@
 #ifndef __SPECTRUM_COLLECTOR_H__
 #define __SPECTRUM_COLLECTOR_H__
 
+#define ARRAY_ELEMENTS(x) (sizeof(x) / sizeof(x[0]))     
+/* sizeof() compile-time operator that returns #bytes of (data type). We used it to get #elements_array */
+
 #include "dsp_types.hpp"
 #include "complex.hpp"
 

firmware/baseband/tone_gen.cpp

@@ -23,18 +23,56 @@
 #include "tone_gen.hpp"
 #include "sine_table_int8.hpp"
 
+
+int32_t ToneGen::tone_sine() {
+	int32_t tone_sample = sine_table_i8[tone_phase_] * 0x1000000;
+	tone_phase_ += delta_;
+
+	return tone_sample;
+}
+
+int32_t ToneGen::tone_square() {
+	int32_t tone_sample = 0;
+
+	if(tone_phase_  < (UINT32_MAX / 2)) {
+		tone_sample = INT32_MAX;
+	}
+	else {
+		tone_sample = INT32_MIN;
+	}
+
+	tone_phase_ += delta_;
+
+	return tone_sample;
+}
+
 void ToneGen::configure(const uint32_t delta, const float tone_mix_weight) {
-	delta_ = delta;
+	delta_ = (uint8_t) ((delta & 0xFF000000U) >> 24);
 	tone_mix_weight_ = tone_mix_weight;
 	input_mix_weight_ = 1.0 - tone_mix_weight;
+
+	current_tone_type_ = sine;
+}
+
+void ToneGen::configure(const uint32_t freq, const float tone_mix_weight, const tone_type tone_type, const uint32_t sample_rate) {
+	delta_ = (uint8_t) ((freq * sizeof(sine_table_i8)) / sample_rate);
+	tone_mix_weight_ = tone_mix_weight;
+	input_mix_weight_ = 1.0 - tone_mix_weight;
+	current_tone_type_ = tone_type;
 }
 
 int32_t ToneGen::process(const int32_t sample_in) {
 	if (!delta_)
 		return sample_in;
 	
-	int32_t tone_sample = sine_table_i8[(tone_phase_ & 0xFF000000U) >> 24];
-	tone_phase_ += delta_;
+	int32_t tone_sample = 0;
+	
+	if(current_tone_type_ == sine) {
+		tone_sample = tone_sine();
+	}
+	else if(current_tone_type_ == square) {
+		tone_sample = tone_square();
+	}
 	
 	return (sample_in * input_mix_weight_) + (tone_sample * tone_mix_weight_);
 }

firmware/baseband/tone_gen.hpp

@@ -28,19 +28,36 @@
 
 class ToneGen {
 public:
+	enum tone_type { sine, square };
+
 	/*ToneGen(const size_t sample_rate
 	) : sample_rate_ { sample_rate }
 	{};*/
 
 	void configure(const uint32_t delta, const float tone_mix_weight);
+	void configure(const uint32_t freq, const float tone_mix_weight, const tone_type tone_type, const uint32_t sample_rate);
+
 	int32_t process(const int32_t sample_in);
 
 private:
-	//size_t sample_rate_;
+	tone_type current_tone_type_ { sine };
+
 	float input_mix_weight_ { 1 };
 	float tone_mix_weight_ { 0 };
-	uint32_t delta_ { 0 };
-	uint32_t tone_phase_ { 0 };
+
+	uint8_t delta_ { 0 };
+	uint8_t tone_phase_ { 0 };
+
+	/**
+	 * Generator function which selects every other sample from the reference sine waveform to the output sample:
+	 */
+	int32_t tone_sine();
+
+
+	/**
+	 * Generator function for square waves:
+	 */	
+	int32_t tone_square();
 };
 
-#endif
+#endif /* __TONE_GEN_H__ */

firmware/baseband/tv_collector.cpp

@@ -88,11 +88,9 @@ void TvCollector::post_message(const buffer_c16_t& data) {
 	// Called from baseband processing thread.
         float re, im;
 	float mag;
-        float max;
 	if( streaming && !channel_spectrum_request_update ) {
                 for(size_t i=0; i<256; i++) 
 		{
-			const auto s = data.p[i];
                         re = (float)(data.p[i].real());
 			im = (float)(data.p[i].imag());
 			mag = __builtin_sqrtf((re * re) + (im * im)) ;

firmware/chibios/os/kernel/src/chsys.c

@@ -119,7 +119,7 @@ void chSysInit(void) {
      serve interrupts in its context while keeping the lowest energy saving
      mode compatible with the system status.*/
   chThdCreateStatic(_idle_thread_wa, sizeof(_idle_thread_wa), IDLEPRIO,
-                    (tfunc_t)_idle_thread, NULL);
+                    (void *)_idle_thread, NULL);
 #endif
 }
 

firmware/common/adsb.cpp

@@ -141,7 +141,11 @@ float cpr_mod(float a, float b) {
 	return a - (b * floor(a / b));
 }
 
-int cpr_NL(float lat) {
+int cpr_NL_precise(float lat) {
+	return (int) floor(2 * PI / acos(1 - ((1 - cos(PI / (2 * NZ))) / pow(cos(PI * lat / 180), 2))));
+}
+
+int cpr_NL_approx(float lat) {
 	if (lat < 0)
 		lat = -lat;		// Symmetry
 	
@@ -150,7 +154,19 @@ int cpr_NL(float lat) {
 			return 59 - c;
 	}
 	
-	return 1;
+	return 1;	
+}
+
+int cpr_NL(float lat) {
+	// TODO prove that the approximate function is good
+	// enough for the precision we need. Uncomment if
+	// that is true. No performance penalty was noticed
+	// from testing, but if you find it might be an issue,
+	// switch to cpr_NL_approx() instead:
+
+	//return cpr_NL_approx(lat);
+
+	return cpr_NL_precise(lat);
 }
 
 int cpr_N(float lat, int is_odd) {
@@ -185,18 +201,18 @@ void encode_frame_pos(ADSBFrame& frame, const uint32_t ICAO_address, const int32
 	// CPR encoding
 	// Info from: http://antena.fe.uni-lj.si/literatura/Razno/Avionika/modes/CPRencoding.pdf
 	
-	delta_lat = 360.0 / ((4.0 * 15.0) - time_parity);		// NZ = 15
-	yz = floor(131072.0 * (cpr_mod(latitude, delta_lat) / delta_lat) + 0.5);
-	rlat = delta_lat * ((yz / 131072.0) + floor(latitude / delta_lat));
+	delta_lat = 360.0 / ((4.0 * NZ) - time_parity);		// NZ = 15
+	yz = floor(CPR_MAX_VALUE * (cpr_mod(latitude, delta_lat) / delta_lat) + 0.5);
+	rlat = delta_lat * ((yz / CPR_MAX_VALUE) + floor(latitude / delta_lat));
 	
 	if ((cpr_NL(rlat) - time_parity) > 0)
 		delta_lon = 360.0 / cpr_N(rlat, time_parity);
 	else
 		delta_lon = 360.0;
-	xz = floor(131072.0 * (cpr_mod(longitude, delta_lon) / delta_lon) + 0.5);
+	xz = floor(CPR_MAX_VALUE * (cpr_mod(longitude, delta_lon) / delta_lon) + 0.5);
 	
-	lat = cpr_mod(yz, 131072.0);
-	lon = cpr_mod(xz, 131072.0);
+	lat = cpr_mod(yz, CPR_MAX_VALUE);
+	lon = cpr_mod(xz, CPR_MAX_VALUE);
 	
 	frame.push_byte((altitude_coded << 4) | ((uint32_t)time_parity << 2) | (lat >> 15));	// T = 0
 	frame.push_byte(lat >> 7);
@@ -258,7 +274,7 @@ adsb_pos decode_frame_pos(ADSBFrame& frame_even, ADSBFrame& frame_odd) {
 
 	// Compute longitude
 	if (time_even > time_odd) {
-		// Use even frame
+		// Use even frame2
 		ni = cpr_N(latE, 0);
 		Dlon = 360.0 / ni;
 		
@@ -279,7 +295,7 @@ adsb_pos decode_frame_pos(ADSBFrame& frame_even, ADSBFrame& frame_odd) {
 		position.latitude = latO;
 	}
 	
-	if (position.longitude > 180) position.longitude -= 360;
+	if (position.longitude >= 180) position.longitude -= 360;
 	
 	position.valid = true;
 
@@ -319,14 +335,14 @@ void encode_frame_velo(ADSBFrame& frame, const uint32_t ICAO_address, const uint
 
 // Decoding method from dump1090
 adsb_vel decode_frame_velo(ADSBFrame& frame){
-	adsb_vel velo {false, 0, 0};
+	adsb_vel velo {false, 0, 0, 0};
 
 	uint8_t * frame_data = frame.get_raw_data();
 	uint8_t velo_type = frame.get_msg_sub();
 
 	if(velo_type >= 1 && velo_type <= 4){ //vertical rate is always present
 
-		velo.v_rate = (((frame_data[8] & 0x07 ) << 6) | ((frame_data[9]) >> 2) - 1) * 64;
+		velo.v_rate = (((frame_data[8] & 0x07 ) << 6) | ((frame_data[9] >> 2) - 1)) * 64;
 
 		if((frame_data[8] & 0x8) >> 3) velo.v_rate *= -1; //check v_rate sign
 	}

firmware/common/adsb.hpp

@@ -83,6 +83,10 @@ const float adsb_lat_lut[58] = {
     86.53536998,    87.00000000
 };
 
+const float PI = 3.14159265358979323846;
+
+const float NZ = 15.0;
+
 void make_frame_adsb(ADSBFrame& frame, const uint32_t ICAO_address);
 
 void encode_frame_id(ADSBFrame& frame, const uint32_t ICAO_address, const std::string& callsign);

firmware/common/adsb_frame.hpp

@@ -69,7 +69,7 @@ public:
 	}
 
 	uint8_t * get_raw_data() const {
-		return (uint8_t* const)raw_data;
+		return (uint8_t* )raw_data;
 	}
 	
 	void make_CRC() {

firmware/common/ais_packet.hpp

@@ -42,6 +42,7 @@ struct DateTime {
 
 template<size_t FieldSize, int32_t DegMax, uint32_t NAValue>
 struct LatLonBase {
+	
 	constexpr LatLonBase(
 	) : LatLonBase { raw_not_available }
 	{
@@ -58,6 +59,8 @@ struct LatLonBase {
 	) : raw_ { other.raw_ }
 	{
 	}
+	
+	LatLonBase& operator=( const LatLonBase &)=default;
 
 	int32_t normalized() const {
 		return static_cast<int32_t>(raw() << sign_extend_shift) / (1 << sign_extend_shift);

firmware/common/aprs_packet.cpp

@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2016 Furrtek
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "aprs_packet.hpp"
+
+namespace aprs {
+
+} /* namespace zwave */

firmware/common/aprs_packet.hpp

@@ -0,0 +1,495 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2016 Furrtek
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __APRS_PACKET_H__
+#define __APRS_PACKET_H__
+
+#include <cstdint>
+#include <cstddef>
+#include <cctype>
+
+#include "baseband.hpp"
+
+namespace aprs {
+
+const int APRS_MIN_LENGTH = 18; //14 bytes address, control byte and pid. 2 CRC.
+
+struct aprs_pos{
+	float latitude;
+	float longitude;	
+	uint8_t symbol_code;
+	uint8_t  sym_table_id;
+};
+
+enum ADDRESS_TYPE {
+	SOURCE,
+	DESTINATION,
+	REPEATER
+};
+
+class APRSPacket {
+public:
+	void set_timestamp(const Timestamp& value) {
+		timestamp_ = value;
+	}
+	
+	Timestamp timestamp() const {
+		return timestamp_;
+	}
+
+	void set(const size_t index, const uint8_t data) {		
+		payload[index] = data;
+
+		if(index + 1 > payload_size){
+			payload_size = index + 1;
+		}
+	}
+
+	uint32_t operator[](const size_t index) const {
+		return payload[index];
+	}
+	
+
+	uint8_t size() const {
+		return payload_size;
+	}
+
+	void set_valid_checksum(const bool valid) {
+		valid_checksum = valid;
+	}
+
+	bool is_valid_checksum() const {
+		return valid_checksum;
+	}
+
+	uint64_t get_source(){
+		uint64_t source = 0x0;
+
+		for(uint8_t i = SOURCE_START; i < SOURCE_START + ADDRESS_SIZE; i++){
+			source |= ( ((uint64_t)payload[i]) << ((i - SOURCE_START) * 8));
+		}
+
+		return source;
+	}
+
+	std::string get_source_formatted(){
+		parse_address(SOURCE_START, SOURCE);
+		return std::string(address_buffer);
+	}
+
+	std::string get_destination_formatted(){
+		parse_address(DESTINATION_START, DESTINATION);
+		return std::string(address_buffer);
+	}
+
+	std::string get_digipeaters_formatted(){
+		uint8_t position = DIGIPEATER_START;
+		bool has_more = parse_address(SOURCE_START, REPEATER);
+
+		std::string repeaters = "";
+		while(has_more){			
+			has_more = parse_address(position, REPEATER);	
+			repeaters += std::string(address_buffer);
+
+			position += ADDRESS_SIZE;
+
+			if(has_more){			
+				repeaters += ">";
+			}		
+		}
+
+		return repeaters;
+	}
+
+	uint8_t get_number_of_digipeaters(){
+		uint8_t position = DIGIPEATER_START;		
+		bool has_more = parse_address(SOURCE_START, REPEATER);
+		uint8_t repeaters = 0;
+		while(has_more){			
+			has_more = parse_address(position, REPEATER);	
+			position += ADDRESS_SIZE;
+			repeaters++;	
+		}
+
+		return repeaters;
+	}
+
+	uint8_t get_information_start_index(){
+		return DIGIPEATER_START + (get_number_of_digipeaters() * ADDRESS_SIZE) + 2;
+	}
+
+	std::string get_information_text_formatted(){
+		std::string information_text = "";
+		for(uint8_t i = get_information_start_index(); i < payload_size - 2; i++){
+			information_text += payload[i];
+		}
+
+		return information_text;
+	}
+
+	std::string get_stream_text(){
+		std::string stream = get_source_formatted() + ">" + get_destination_formatted() + ";" + get_digipeaters_formatted() + ";" + get_information_text_formatted();
+
+		return stream;
+	}
+
+	char get_data_type_identifier(){
+		char ident = '\0';
+		for(uint8_t i = get_information_start_index(); i < payload_size - 2; i++){
+			ident = payload[i];
+			break;
+		}
+		return ident;
+	}
+
+	bool has_position(){		
+		char ident = get_data_type_identifier();
+
+		return 
+			ident == '!' || 
+			ident == '=' || 
+			ident == '/' || 
+			ident == '@' || 
+			ident == ';' || 
+			ident == '`' ||
+			ident == '\''||
+			ident == 0x1d||
+			ident == 0x1c;
+	}
+
+	aprs_pos get_position(){
+		aprs::aprs_pos pos;
+
+		char ident = get_data_type_identifier();
+		std::string info_text = get_information_text_formatted();
+
+		std::string lat_str, lng_str;
+		char first;
+		//bool supports_compression = true;
+		bool is_mic_e_format = false;
+		std::string::size_type start;
+
+		switch(ident){
+			case '/':
+			case '@':
+				start = 8;
+				break;
+			case '=':
+			case '!':
+				start = 1;
+				break;
+			case ';':			
+				start = 18;
+				//supports_compression = false;
+				break;
+			case '`':
+			case '\'':
+			case 0x1c:
+			case 0x1d:
+				is_mic_e_format = true;
+				break;
+			default:
+				return pos;
+		}		
+		if(is_mic_e_format){
+			parse_mic_e_format(pos);
+		}
+		else {			
+			if(start < info_text.size()){
+				first = info_text.at(start);
+
+				if(std::isdigit(first)){
+					if(start + 18 < info_text.size()){
+						lat_str = info_text.substr(start, 8);
+						pos.sym_table_id = info_text.at(start + 8);
+						lng_str = info_text.substr(start + 9, 9);
+						pos.symbol_code = info_text.at(start + 18);
+
+						pos.latitude = parse_lat_str(lat_str);
+						pos.longitude = parse_lng_str(lng_str);
+					}
+					
+				}
+				else {
+					if(start + 9 < info_text.size()){
+						pos.sym_table_id = info_text.at(start);
+						lat_str = info_text.substr(start + 1, 4);
+						lng_str = info_text.substr(start + 5, 4);
+						pos.symbol_code = info_text.at(start + 9);
+
+						pos.latitude = parse_lat_str_cmp(lat_str);
+						pos.longitude = parse_lng_str_cmp(lng_str);	
+					}		
+				}
+			}			
+		}		
+
+		return pos;
+	}
+
+	void clear() {
+		payload_size = 0;
+	}
+
+private:
+	const uint8_t DIGIPEATER_START = 14;
+	const uint8_t SOURCE_START = 7;
+	const uint8_t DESTINATION_START = 0;
+	const uint8_t ADDRESS_SIZE = 7;
+
+	bool valid_checksum = false;
+	uint8_t payload[256];
+	char address_buffer[15];
+	uint8_t payload_size;
+	Timestamp timestamp_ { };
+
+	float parse_lat_str_cmp(const std::string& lat_str){
+		return 90.0 - ( (lat_str.at(0) - 33) * (91*91*91) + (lat_str.at(1) - 33) * (91*91) + (lat_str.at(2) - 33) * 91 + (lat_str.at(3)) ) / 380926.0;		
+	}
+
+	float parse_lng_str_cmp(const std::string& lng_str){
+		return -180.0 + ( (lng_str.at(0) - 33) * (91*91*91) + (lng_str.at(1) - 33) * (91*91) + (lng_str.at(2) - 33) * 91 + (lng_str.at(3)) ) / 190463.0;		
+	} 
+
+	uint8_t parse_digits(const std::string& str){
+		if(str.at(0) == ' '){
+			return 0;
+		}
+		uint8_t end = str.find_last_not_of(' ') + 1;
+		std::string sub = str.substr(0, end);
+
+		if(!is_digits(sub)){
+			return 0;
+		}
+		else {
+			return std::stoi(sub);
+		}
+	}
+
+	bool is_digits(const std::string& str){
+		return str.find_last_not_of("0123456789") == std::string::npos;
+	}
+
+	float parse_lat_str(const std::string& lat_str){
+		float lat = 0.0;
+
+		std::string str_lat_deg = lat_str.substr(0, 2);
+		std::string str_lat_min = lat_str.substr(2, 2);
+		std::string str_lat_hund = lat_str.substr(5, 2);
+		std::string dir = lat_str.substr(7, 1);
+
+		uint8_t lat_deg = parse_digits(str_lat_deg);
+		uint8_t lat_min = parse_digits(str_lat_min);
+		uint8_t lat_hund = parse_digits(str_lat_hund);
+
+		lat += lat_deg;
+		lat += (lat_min + (lat_hund/ 100.0))/60.0;
+
+		if(dir.c_str()[0] == 'S'){
+			lat = -lat;
+		}
+
+		return lat;
+
+	}
+
+	float parse_lng_str(std::string& lng_str){
+		float lng = 0.0;
+
+		std::string str_lng_deg = lng_str.substr(0, 3);
+		std::string str_lng_min = lng_str.substr(3, 2);
+		std::string str_lng_hund = lng_str.substr(6, 2);
+		std::string dir = lng_str.substr(8, 1);
+
+		uint8_t lng_deg = parse_digits(str_lng_deg);
+		uint8_t lng_min = parse_digits(str_lng_min);
+		uint8_t lng_hund = parse_digits(str_lng_hund);
+
+		lng += lng_deg;
+		lng += (lng_min + (lng_hund/ 100.0))/60.0;
+
+		if(dir.c_str()[0] == 'W'){
+			lng = -lng;
+		}
+
+		return lng;
+
+	}
+
+	void parse_mic_e_format(aprs::aprs_pos& pos){
+		std::string lat_str = "";
+		std::string lng_str = "";
+
+		bool is_north = false;
+		bool is_west = false;
+		uint8_t lng_offset = 0;
+		for(uint8_t i = DESTINATION_START; i < DESTINATION_START + ADDRESS_SIZE - 1; i++){
+			uint8_t ascii = payload[i] >> 1;
+
+			lat_str += get_mic_e_lat_digit(ascii);
+
+			if(i - DESTINATION_START == 3){
+				lat_str += ".";
+			}
+			if(i - DESTINATION_START == 3){
+				is_north = is_mic_e_lat_N(ascii);
+			}
+			if(i - DESTINATION_START == 4){
+				lng_offset = get_mic_e_lng_offset(ascii);
+			}
+			if(i - DESTINATION_START == 5){
+				is_west = is_mic_e_lng_W(ascii);
+			}
+		}
+		if(is_north){
+			lat_str += "N";
+		}
+		else {
+			lat_str += "S";
+		}
+
+		pos.latitude = parse_lat_str(lat_str);	
+
+		float lng = 0.0;
+		uint8_t information_start = get_information_start_index() + 1;
+		for(uint8_t i = information_start; i < information_start + 3 && i < payload_size - 2; i++){
+			uint8_t ascii = payload[i];
+			
+			if(i - information_start == 0){ //deg
+				ascii -=28;
+				ascii += lng_offset;
+
+				if(ascii >= 180 && ascii <= 189){
+					ascii -= 80;
+				}
+				else if (ascii >= 190 && ascii <= 199){
+					ascii -= 190;
+				}
+
+				lng += ascii;
+			}	
+			else if(i - information_start == 1){ //min
+				ascii -= 28;
+				if(ascii >= 60){
+					ascii -= 60;
+				}
+				lng += ascii/60.0;
+			}	
+			else if(i - information_start == 2){ //hundredth minutes
+				ascii -= 28;
+
+				lng += (ascii/100.0)/60.0;
+			}	
+		}
+
+		if(is_west){
+			lng = -lng;
+		}
+
+		pos.longitude = lng;
+
+	}
+
+	uint8_t get_mic_e_lat_digit(uint8_t ascii){
+		if(ascii >= '0' && ascii <= '9'){
+			return ascii;
+		}
+		if(ascii >= 'A' && ascii <= 'J'){
+			return ascii - 17;
+		}
+		if(ascii >= 'P' && ascii <='Y'){
+			return ascii - 32;
+		}
+		if(ascii == 'K' || ascii == 'L' || ascii == 'Z'){
+			return ' ';
+		}
+
+		return '\0';
+	}
+
+	bool is_mic_e_lat_N(uint8_t ascii){
+		if(ascii >= 'P' && ascii <='Z'){
+			return true;
+		}		
+		return false; //not technical definition, but the other case is invalid
+	}
+
+	bool is_mic_e_lng_W(uint8_t ascii){
+		if(ascii >= 'P' && ascii <='Z'){
+			return true;
+		}		
+		return false; //not technical definition, but the other case is invalid
+	}
+
+	uint8_t get_mic_e_lng_offset(uint8_t ascii){
+		if(ascii >= 'P' && ascii <='Z'){
+			return 100;
+		}		
+		return 0; //not technical definition, but the other case is invalid
+	}
+
+	bool parse_address(uint8_t start, ADDRESS_TYPE address_type){
+		uint8_t byte = 0;
+		uint8_t has_more = false;
+		uint8_t ssid = 0;
+		uint8_t buffer_index = 0;
+
+		for(uint8_t i = start; i < start + ADDRESS_SIZE && i < payload_size - 2; i++){
+			byte = payload[i];
+
+			if(i - start == 6){
+				 has_more = (byte & 0x1) == 0;
+				 ssid = (byte >> 1) & 0x0F;
+
+				 if(ssid != 0 || address_type == REPEATER){
+				 	address_buffer[buffer_index++] = '-';				 	
+
+				 	if(ssid < 10){
+				 		address_buffer[buffer_index++] = '0' + ssid;				 		
+				 		address_buffer[buffer_index++] = '\0';
+				 	}
+				 	else {
+				 		address_buffer[buffer_index++] = '1';
+				 		address_buffer[buffer_index++] = '0' + ssid - 10;
+				 		address_buffer[buffer_index++] = '\0';
+				 	}
+				 }
+				 else {
+					 address_buffer[buffer_index++] = '\0';
+				 }
+			}
+			else {
+				byte >>= 1;
+
+				if(byte != ' '){
+					address_buffer[buffer_index++] = byte;		
+				}			
+			}
+		}
+
+		return has_more;
+	}
+};
+
+} /* namespace aprs */
+
+#endif/*__APRS_PACKET_H__*/

firmware/common/dsp_iir.cpp

@@ -55,3 +55,29 @@ void IIRBiquadFilter::execute(const buffer_f32_t& buffer_in, const buffer_f32_t&
 void IIRBiquadFilter::execute_in_place(const buffer_f32_t& buffer) {
 	execute(buffer, buffer);
 }
+
+void IIRBiquadDF2Filter::configure(const iir_biquad_df2_config_t& config) {
+	b0 = config[0] / config[3];
+	b1 = config[1] / config[3];
+	b2 = config[2] / config[3];
+	a1 = config[4] / config[3];
+	a2 = config[5] / config[3];
+}
+
+//  scipy.signal.sosfilt
+//
+//  x_n = x[i, n]  # make a temporary copy
+//  # Use direct II transposed structure:
+//  x[i, n] = b[s, 0] * x_n + zi[i, s, 0]
+//  zi[i, s, 0] = (b[s, 1] * x_n - a[s, 0] * x[i, n] + zi[i, s, 1])
+//  zi[i, s, 1] = (b[s, 2] * x_n - a[s, 1] * x[i, n])
+
+float IIRBiquadDF2Filter::execute(float x) {
+	float y;
+	
+	y = b0 * x + z0;
+	z0 = b1 * x - a1 * y + z1;
+	z1 = b2 * x - a2 * y;
+
+	return y;
+}

firmware/common/dsp_iir.hpp

@@ -31,6 +31,9 @@ struct iir_biquad_config_t {
 	std::array<float, 3> a;
 };
 
+// 0..2 - b, 3..5 - a
+typedef std::array<float, 6> iir_biquad_df2_config_t;
+
 constexpr iir_biquad_config_t iir_config_passthrough {
 	{ { 1.0f, 0.0f, 0.0f } },
 	{ { 0.0f, 0.0f, 0.0f } },
@@ -67,4 +70,21 @@ private:
 	std::array<float, 3> y { { 0.0f, 0.0f, 0.0f } };
 };
 
+class IIRBiquadDF2Filter {
+public:
+
+	void configure(const iir_biquad_df2_config_t& config);
+	float execute(float z);
+
+private:
+	float b0 = 0;
+	float b1 = 0;
+	float b2 = 0;
+	float a1 = 0;
+	float a2 = 0;
+
+	float z0 = 0;
+	float z1 = 0;
+};
+
 #endif/*__DSP_IIR_H__*/

firmware/common/dsp_sos.cpp

@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2020 Belousov Oleg
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "dsp_sos.hpp"

firmware/common/dsp_sos.hpp

@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2020 Belousov Oleg
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __DSP_SOS_H__
+#define __DSP_SOS_H__
+
+#include "dsp_iir.hpp"
+
+#include <cstdint>
+#include <cstddef>
+
+template <size_t N>
+class SOSFilter {
+
+public:
+
+    void configure(const iir_biquad_df2_config_t config[N]) {
+        for (size_t i = 0; i < N; i++)
+            filters[i].configure(config[i]);
+    }
+
+    float execute(float value) {
+        for (auto &filter : filters)
+            value = filter.execute(value);
+        return value;
+    }
+
+private:
+
+    IIRBiquadDF2Filter filters[N];
+};
+
+#endif/*__DSP_SOS_H__*/

firmware/common/dsp_sos_config.hpp

@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2020 Belousov Oleg
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __DSP_SOS_CONFIG_H__
+#define __DSP_SOS_CONFIG_H__
+
+#include "dsp_iir.hpp"
+
+// scipy.signal.iirfilter(ftype="ellip", N = 10, rp = 0.5, rs = 60.0, Wn = 0.5, btype = 'lowpass', output="sos")
+
+constexpr iir_biquad_df2_config_t half_band_lpf_config[5] = {
+	{ 0.02339042f,	0.0411599f,		0.02339042f,	1.0f,		-0.95317621f,	0.33446485f },
+	{ 1.0f,			0.82196114f,	1.0f,			1.0f,       -0.50327735f,	0.63611027f },
+	{ 1.0f,         0.32515305f,	1.0f,           1.0f,       -0.18144446f,   0.85269598f },
+	{ 1.0f,         0.14394122f,	1.0f,          	1.0f,       -0.04368236f,	0.94798064f },
+	{ 1.0f,         0.08720754,		1.0f,           1.0f,        0.00220944f,  	0.98743139f }
+};
+
+#endif/*__DSP_SOS_CONFIG_H__*/

firmware/common/field_reader.hpp

@@ -49,7 +49,7 @@ public:
 	/* The "start_bit" winds up being the MSB of the returned field value. */
 	/* The BitRemap functor determines which bits are read from the source
 	 * packet. */
-	uint32_t read(const size_t start_bit, const size_t length) const {
+	int32_t read(const size_t start_bit, const size_t length) const { //Euquiq: was uint32_t, used for calculating lat / lon in radiosondes, can be negative too
 		uint32_t value = 0;
 		for(size_t i=start_bit; i<(start_bit + length); i++) {
 			value = (value << 1) | data[bit_remap(i)];

firmware/common/lcd_ili9341.cpp

@@ -30,8 +30,13 @@ using namespace portapack;
 
 #include "ch.h"
 
+#include "file.hpp"
+
 #include <complex>
 
+#include <cstring>
+#include <string>
+
 namespace lcd {
 
 namespace {
@@ -416,6 +421,113 @@ void ILI9341::drawBMP(const ui::Point p, const uint8_t * bitmap, const bool tran
 	}
 }
 
+/*
+	Draw BMP from SD card.
+	Currently supported formats:
+		16bpp ARGB, RGB565
+		24bpp RGB
+		32bpp ARGB
+*/
+bool ILI9341::drawBMP2(const ui::Point p, const std::string file) {
+	File bmpimage;
+	size_t file_pos = 0;
+	uint16_t pointer = 0;
+	int16_t px = 0, py, width, height;
+	bmp_header_t bmp_header;
+	uint8_t type = 0;
+	char buffer[257];
+	ui::Color line_buffer[240];
+
+	auto result = bmpimage.open(file);
+	if(result.is_valid())
+		return false;
+
+	bmpimage.seek(file_pos);
+	auto read_size = bmpimage.read(&bmp_header, sizeof(bmp_header));
+	if (!((bmp_header.signature == 0x4D42) && // "BM" Signature
+		(bmp_header.planes == 1) && // Seems always to be 1
+		(bmp_header.compression == 0 || bmp_header.compression == 3 ))) {	// No compression
+			return false;
+	}
+
+	switch(bmp_header.bpp) {
+		case 16:
+			file_pos = 0x36;
+			memset(buffer, 0, 16);
+			bmpimage.read(buffer, 16);
+			if(buffer[1] == 0x7C)
+				type = 3; // A1R5G5B5
+			else
+				type = 0; // R5G6B5
+			break;
+		case 24:
+			type = 1;
+			break;
+		case 32:
+		default:
+			type = 2;
+			break;
+	}
+
+	width = bmp_header.width;
+	height = bmp_header.height;
+
+	file_pos = bmp_header.image_data;
+
+	py = height + 16;
+
+	while(1) {
+		while(px < width) {
+			bmpimage.seek(file_pos);
+			memset(buffer, 0, 257);
+			read_size = bmpimage.read(buffer, 256);
+			if (read_size.is_error())
+				return false;	// Read error
+
+			pointer = 0;
+			while(pointer < 256) {
+				if(pointer + 4 > 256)
+					break;
+				switch(type) {
+					case 0:
+					case 3:
+						if(!type)
+							line_buffer[px] = ui::Color((uint16_t)buffer[pointer] | ((uint16_t)buffer[pointer + 1] << 8));
+						else
+							line_buffer[px] = ui::Color(((uint16_t)buffer[pointer] & 0x1F) | ((uint16_t)buffer[pointer] & 0xE0) << 1 | ((uint16_t)buffer[pointer + 1] & 0x7F) << 9);
+						pointer += 2;
+						file_pos += 2;
+						break;
+					case 1:
+					default:
+						line_buffer[px] = ui::Color(buffer[pointer + 2], buffer[pointer + 1], buffer[pointer]);
+						pointer += 3;
+						file_pos += 3;
+						break;
+					case 2:
+						line_buffer[px] = ui::Color(buffer[pointer + 2], buffer[pointer + 1], buffer[pointer]);
+						pointer += 4;
+						file_pos += 4;
+						break;
+				}
+				px++;
+				if(px >= width) {
+					break;
+				}
+			}
+			if(read_size.value() != 256)
+				break;
+		}
+		render_line({ p.x(), p.y() + py }, px, line_buffer);
+		px = 0;
+		py--;
+
+		if(read_size.value() < 256 || py < 0)
+			break;
+	}
+	return true;
+}
+
 void ILI9341::draw_line(const ui::Point start, const ui::Point end, const ui::Color color) {
 	int x0 = start.x();
 	int y0 = start.y();

firmware/common/lcd_ili9341.hpp

@@ -60,6 +60,7 @@ public:
 
 	void draw_pixel(const ui::Point p, const ui::Color color);
 	void drawBMP(const ui::Point p, const uint8_t * bitmap, const bool transparency);
+	bool drawBMP2(const ui::Point p, const std::string file);
 	void render_line(const ui::Point p, const uint8_t count, const ui::Color* line_buffer);
 	void render_box(const ui::Point p, const ui::Size s, const ui::Color* line_buffer);