be78ed657f
Remove taps_count template arg for FIRAndDecimateBy2Complex.
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Use heap to allocate samples and taps buffers, so filters of different lengths can be supported.
2015-11-06 09:40:04 -08:00
0f73d6061a
Remove old decimating FIR code.
2015-11-06 09:40:04 -08:00
015e5516d5
Update/consolidate AIS RRC matched filter taps.
2015-11-06 09:40:04 -08:00
be94c9fa9b
Switching between waterfall and console mode.
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Also remove an unused Console constructor.
2015-11-06 09:40:03 -08:00
d0f35cf89d
Rework spectrum/console UI clearing and resetting.
2015-11-06 09:40:03 -08:00
dc30911e0f
Check for widget != nullptr before add/remove child.
2015-11-06 09:40:03 -08:00
dab801e167
AIS RX tweak of clock recovery constant for better performance.
2015-11-06 09:40:03 -08:00
58b97dea68
AIS RX performance improved with 32-tap RRC.
2015-11-06 09:40:03 -08:00
f82fd1f8d7
Tease apart utility.hpp, other header dependencies.
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Trying to get a host-testable FSK demodulator, and finding a lot of M4- and ChibiOS-specific code is getting included. Boo.
2015-11-06 09:40:03 -08:00
e049097f49
Remove spurious commented code.
2015-11-06 09:40:03 -08:00
0a7ac153a7
AIS RRC taps updated, more precision, corrected frequency shift.
2015-11-06 09:40:03 -08:00
338983e7ae
Remove unused negative-shifted RRC filters.
2015-11-06 09:40:03 -08:00
4aae77f565
MatchedFilter improvements
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Use single set of taps for positive and negative filters.
Reverse taps (since new samples are pushed into buffer from the high end).
Make complex multiply explicit to avoid fancy but irrelevant arithmetic checks.
Compute negative filter from conjugation of positive filter taps.
Move filter power and difference calculations into MatchedFilter.
2015-11-06 09:40:03 -08:00
ab28639a3d
Use std::move to move samples in buffer.
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Yes, std::rotate works, but it's fancy and does unnecessary work.
2015-11-06 09:40:02 -08:00
4141d6fe0f
Untemplate MatchedFilter, a different way.
2015-11-06 09:40:02 -08:00
fe94cfa45a
De-std::vector MatchedFilter, was chewing up far too much memory.
2015-11-06 09:40:02 -08:00
3e9f0971e1
Assert that FSKConfiguration size is the same between application and baseband binaries.
2015-11-06 09:40:02 -08:00
64ed539554
Change LinearResampler.advance to external use only.
2015-11-06 09:40:02 -08:00
4ed385d15e
Prioritize PacketBuilder found_end_flag() over packet_truncated().
2015-11-06 09:40:02 -08:00
c2e7f9a6f4
Shorten AIS training sequence match length.
2015-11-06 09:40:02 -08:00
d92c962c0c
Set MatchedFilter taps with separate method.
2015-11-06 09:40:02 -08:00
8198db768d
Move some MatchedFilter code to .cpp file.
2015-11-06 09:40:02 -08:00
aff7865c61
Move (some) AIS bits to a separate file.
2015-11-06 09:40:02 -08:00
7a5100baf1
Enlarge packet payload size 256 -> 1024 bits.
2015-11-06 09:40:01 -08:00
68250b4d30
Expose weight() of FixedErrorFilter.
2015-11-06 09:40:01 -08:00
474eaa8541
Template ClockRecovery for ErrorFilter type.
2015-11-06 09:40:01 -08:00
9879af37d5
FixedErrorFilter constructor.
2015-11-06 09:40:01 -08:00
727d4c8a1f
Const the FixedErrorFilter operator().
2015-11-06 09:40:01 -08:00
93b9b9d9ef
LinearErrorFilter constructor.
2015-11-06 09:40:01 -08:00
57db6a6367
Ignore more initial bits of AIS training sequence.
2015-11-06 09:40:01 -08:00
37b1d7cf2f
Remove payload_length from PacketBuilder, etc.
2015-11-06 09:40:01 -08:00
142617ad94
Silence Clang warning.
2015-11-06 09:40:01 -08:00
cf3bff3b03
Decouple PacketBuilder PayloadHandler function from method type.
2015-11-06 09:40:01 -08:00
1bdad62496
Simplify PacketBuilder pattern matching and symbol accumulation.
2015-11-06 09:40:00 -08:00
36689f5c45
Refactor bit pattern matching.
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Remove AccessCodeCorrelator, Unstuff classes.
2015-11-06 09:40:00 -08:00
f918a774b7
Address implicit cast compiler warnings.
2015-11-06 09:40:00 -08:00
0bc8f551de
Use matched filter for AIS GMSK demodulation demo.
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Less than optimal for plain FSK, but flexible enough to also support GFSK/GMSK. Not at all optimized for SIMD instructions, so may not perform adequately at Bluetooth/GSM rates.
2015-11-06 09:40:00 -08:00
a9c190b6bb
Matched filter implementation.
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Essentially a complex FIR filter that's more flexible than the ones already in the code base. Refactor?!
2015-11-06 09:40:00 -08:00
6499de39bf
Shorten AIS packet to expected data + FCS length.
2015-11-06 09:40:00 -08:00
bd76f0e13b
Note to try different -mcpu= for LPC43xx Cortex-M0.
2015-11-06 09:40:00 -08:00
e9f28f9ef3
Provide configuration of symbol unstuffing.
2015-11-06 09:40:00 -08:00
a00fcbaa8f
Unstuffing pattern length of zero should never match.
2015-11-06 09:40:00 -08:00
05badaddda
Put symbol coding into PacketBuilder.
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Removes stuffing symbols before placing them into packet buffer.
2015-11-06 09:40:00 -08:00
c936e09702
Add bit unstuffing algorithm.
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For use in AIS. Probably useful elsewhere, too...
2015-11-06 09:39:59 -08:00
31ff13f1c0
Un-const Message in message handler interfaces.
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I want to modify in place the messages that are received. Naughty, but oh well.
2015-11-06 09:39:59 -08:00
5469a3a31d
Get ui::Console to a working state.
2015-11-06 09:39:59 -08:00
5c31e803c8
Change interface to AccessCodeCorrelator, inline in header.
2015-11-06 09:39:59 -08:00
a3cce5632e
Complete rewrite of clock recovery, lots of refactoring.
2015-11-06 09:39:59 -08:00
8b2e75a299
Add LinearResampler implementation for clock recovery.
2015-11-06 09:39:59 -08:00
f13e2d32c0
Add symbol coding namespace, NRZI decoder.
2015-11-06 09:39:59 -08:00
Jared Boone