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
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
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
934936d3f6
Enhancements to clock recovery
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Linearly interpolate input and delayed samples, based on phase of internal symbol clock.
2015-11-06 09:39:59 -08:00
291de8f869
Change channel_spectrum type to std::complex<float>.
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Move FFT bit-reversal to complex<int16_t> -> complex<float> copy.
Change window so that adjacent bins have constant(-ish) gain.
Change window to float.
Change time domain samples to accumulate at even intervals over the FFT interval.
2015-10-14 11:10:24 -07:00
7f46f0d071
Add tick tracking for all baseband threads.
2015-10-14 10:44:20 -07:00
ff96464efe
Added AFSK BW and repeat parameters
2015-09-16 15:43:43 +02:00
9a7657fb38
Play dead actually works, fixed 7bit AFSK, AFSK repeat, started whistle mode
2015-09-10 20:36:39 +02:00
30531a20f2
Splash screen and Play Dead functionality
2015-09-04 20:37:27 +02:00
ec26f587f1
Started adding AFSK modulator options, cleaning up LCR TX
2015-09-03 06:34:00 +02:00
e2bb77d756
Change wideband FFT bin filter, clean up code a bit.
2015-09-02 11:29:38 -07:00
c4de9c4423
Mute audio whenever baseband mode is changed.
2015-09-01 21:05:47 -07:00
c52de7abe6
Clean up baseband/RSSI streaming control.
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Address hang-up of baseband and RSSI when switching modulation modes really fast.
2015-09-01 21:05:32 -07:00
5d8c636f40
Halt M4 right after sending M0 the shutdown message.
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Addresses issue #55 .
2015-09-01 13:49:09 -07:00
0e0261f813
LCR in TEDI 1200/2400 AFSK transmit
2015-08-28 20:50:42 +02:00
3fea68d777
Adjust wideband specan gain to match other modes.
2015-08-27 14:57:05 -07:00
b13081696d
Simplify MessageQueue pop() usage.
2015-08-27 14:35:17 -07:00
d8b3b4cb6b
Check queue empty only once when reading messages.
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There was a second is_empty() call hidden in the pop() call, so the while(condition) was redundant.
2015-08-27 14:27:29 -07:00
e751e10e45
Add wideband spectrum processor.
2015-08-27 13:57:31 -07:00
23ac04ad56
Make channel spectrum members protected, not private.
2015-08-27 13:51:55 -07:00
c7907e948c
Extract FSKProcessor into separate files.
2015-08-27 13:31:39 -07:00
ffe829cf67
Extract WidebandFMAudio into separate files.
2015-08-27 13:19:34 -07:00
7c5db55f8f
Extract NarrowbandFMAudio into separate files.
2015-08-27 13:14:45 -07:00
e246ea2c39
Extract NarrowbandAMAudio class into separate files.
2015-08-27 13:07:07 -07:00
6bf61cbe88
Extract BasebandProcessor into separate files.
2015-08-27 11:11:08 -07:00
b0e9afe26c
Add missing #includes.
2015-08-27 11:10:44 -07:00
04d05368c7
Push static variables and spectrum calc into BasebandProcessor.
2015-08-27 10:48:29 -07:00
de0777f476
Extract FMSquelch into separate files.
2015-08-27 09:59:03 -07:00
b904971ef2
Extract IIR filter configurations into separate file.
2015-08-27 09:58:37 -07:00
c92bf12fbd
Extract ChannelDecimator into separate files.
2015-08-27 09:49:14 -07:00
98773cb62a
Make GIT_REVISION value available within code.
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Addresses issue #59 .
No idea what it'll do if the commit is also tagged as a release...
2015-08-25 16:33:52 -07:00
8f815a3b39
Integerized the waveform table
2015-08-24 05:16:55 +02:00
8e0210f944
Savestate ! RDS (only PSN) tx
2015-08-23 05:08:38 +02:00
3a96c04aa7
Implement, use configuration for FM demod deviation.
2015-08-21 09:19:08 -07:00
fa275156ed
Move FSKPacketMessage to stack.
2015-08-21 09:18:21 -07:00
589cb47cc6
Move M4 shutdown() next to init().
2015-08-20 20:40:46 -07:00
672284080b
Extract M4 IPC IRQ code into separate file.
2015-08-20 20:39:08 -07:00
690c3c98db
Add Shutdown message, plumbing to send and handle.
2015-08-20 18:03:49 -07:00
15791e345d
Make baseband event loop methods private.
2015-08-20 17:57:59 -07:00
9742a058e9
Move event loop into dispatcher, provide a way to exit.
2015-08-20 17:56:19 -07:00
4126f1ab1f
Change IPC to exchange data, not pointers.
2015-08-20 13:13:12 -07:00
a7226820d0
Hide implementation of MessageHandlerMap.
2015-08-14 17:31:23 -07:00
Jared Boone
furrtek