External app for encoding and transmitting FLEX pager frames at
1600bps/2FSK. Supports short (1-1,933,312) and long (2,101,249-
4,297,068,542) addresses across all encoding sets (1-2, 1-3/1-4, 2-3).
Message types:
- Alphanumeric (vector type 5): 7-bit chars, signature, K checksum
- Standard Numeric (vector type 3): 4-bit BCD, K checksum
- Short/tone-only (vector type 2): space-filled BCD in vector word
- Short numeric (vector type 2): BCD digits in vector word (3/8 digits)
Frame structure:
- FIW (Frame Information Word): cycle, frame, roaming flag
- BIW (Block Information Word) support with up to 3 extra words:
Date, Time, SysInfo/timezone+DST, SSID1 (Simulcast System ID:
Local ID + Coverage Zone), SSID2 (Country Code)
- BCH(31,21) encoding with bit reversal, block interleaving
- Two frames per TX: message R=1 (new) then R=0 (duplicate)
- Message number N (0-63): random seed from RTC, auto-increments
- ERS (Emergency Re-Sync) burst: configurable N x 42-cycle bursts
with 8-cycle preamble per frame
UI:
- Capcode info line: address type, computed frame/phase (reference)
- TX status: step counter with ERS/frame progress
- Set params view: Date/Time/TZ/DST, LocID/CovZone, CountryCode,
Roaming, message number, ERS count
- Date/time auto-populated from RTC with calendar-equivalent year
mapping for years beyond 2025 (per ARIB STD-43A)
- Year validation with equiv-year popup for out-of-range values
- Capcode and BIW flags persisted via SettingsManager
Serial interface:
- sendflex <capcode> <type> <msglen> + payload
- Types: 0=alpha, 1=numeric, 2=short/tone, 3=short numeric
- FlexTosendMessage (ID 103) for serial-to-app communication
- App must be open to receive serial commands
RX: fix address/batch-boundary handling, add numeric continuation,
add heuristic type detection toggle, pass inverted polarity flag,
stream decoded messages over USB serial.
TX: rename phase to polarity (Standard/Inverted), fix function
validation (&&→||), fix serial shell payload read (offset tracking,
31-byte cap, preserve msglen).
Decoder: remove color escapes from output (plain text for all
consumers), guard count_alpha_fill against empty string, keep
numeric_len across continuation batches.
Serial format: POCSAG <baud> <addr> <func> <pol> <type> "<msg>" hex:<hex>
Quote escaping for embedded " and \\ in alpha messages.
* message on dev list change
* dc detect
* added sht3x sensor.
* separete environment data from light
* max17055 moved to i2c dev
* sht fix, goterror detection fix
* fix ext sensor app display for a lot of devices.
* added bh1750 driver
* autoscan on main view
* added devlist mutex
* better timing
* fix h2 sw8 on poweron by usb
* Pad image to 1MB and add simple checksum
* Test code to verify firmware checksum
* Comment out unneeded zlib
* Add files via upload
* Print space remaining in ROM
* Append checksum to external apps too
* Check external app checksums when loading
* Is it 2024 already?!
* Validate firmware checksum before flashing
* Add files via upload
* Added flash error warning to nav screen
* Clang
* Replaced some hard-coded values with #defines
* Check FW checksum before USB serial flash too
* Add files via upload
* Initial accessibility support
* added it to some widgets to test
* More widget accessibility response
* More widgets, better output
* Mark selected widget on list
* typo
* Initial commit for keyboard emulation
* Added on_keyboard to some widgets
* TextEdit partly
* Multi key send at once
* Frequency control support
* Fix encoder emulation
* Add keyboard to geomap
* More widgets
* Added support for extracting firmware from TAR file (with apps)
* Added tar to usb cdc firmware command.
* Serial flash tar
* Show error on bad tar
* Check tar for valid filenames
Totoo
VasylSamoilov
jLynx
Oleg Belousov
Bernd Herzog
gullradriel
sommermorgentraum
Mark Thompson
E.T
John Stockdale