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1 094 Commity
15 Gałęzie
9 Tagi
47 MiB
Wykres commitów

1094 Commity (822fb84146011eebb847b9eb66ff56427085a0ee)

Autor SHA1 Wiadomość Data
Silvano Seva 77dfeef9e7 Implemented audio decoding functions in CODEC2 module 2022-05-27 21:48:47 +02:00
Silvano Seva c7fbd98dc9 Stub implementatio of output stream driver for GDx devices 2022-05-27 21:48:47 +02:00
Silvano Seva fda0fed5e7 Moved constant specifying sample rate for M17 baseband decoding from hwconfig.h files to M17Demodulator class 2022-05-27 21:48:47 +02:00
Silvano Seva e5b5daba85 Moved state variables of PWM compensator and DC removal filter outside the function bodies to allow keeping their consistency among function calls 2022-05-27 21:48:47 +02:00
Silvano Seva 9139b19aac Fixed bug in MDx input stream driver causing the SPI clock line towards the DMR chip to be set as analog input when an audio stream from the RF stage was opened 2022-05-27 21:48:47 +02:00
Mathis Schmieder 89c05a7332 Adjusted Module17 mic processing gain; interim-fix for DC offset removal 2022-05-27 21:48:47 +02:00
Silvano Seva 49e5486ea6 Parametric mic gain inside codec2 module 2022-05-27 21:48:47 +02:00
Silvano Seva b144657257 Moved CODEC2 management to a dedicated module 2022-05-27 21:48:47 +02:00
Silvano Seva 4b8685b853 Changed gain and added an offset at tx RRC stage only for Module 17 to compensate for an hardware bug 2022-05-27 21:48:47 +02:00
Silvano Seva 4a3e31cd03 Fixed bug in M17 demodulator caused by the precedent code refactoring 2022-05-27 21:48:47 +02:00
Silvano Seva d1b4973cc9 Fixed reset of DC bias on stream stop in Module 17 output stream driver, made parametric the gain of the RRC at modulator side 2022-05-27 21:48:47 +02:00
Silvano Seva 94fdf44954 Biased Module 17 baseband DAC output to Vdd/2 when idle 2022-05-27 21:48:47 +02:00
Silvano Seva 83020d4fa3 Increased priority of CODEC2 thread, this fixes glitches when generating M17 baseband signal 2022-05-27 21:48:47 +02:00
Silvano Seva 628c341712 Small improvements to MDx and Module 17 output stream drivers 2022-05-27 21:48:47 +02:00
Silvano Seva 1bc1316f7d Fixed bug to Module 17 input stream driver causing the thread waiting on inputStream_getData() to not be woken up when stream was stopped 2022-05-27 21:48:47 +02:00
Silvano Seva 12dc186129 Fixed bug in Module 17 output stream driver causing outputStream_sync() to hang when a stream was opened for the second time 2022-05-27 21:48:47 +02:00
Silvano Seva eb22e4b4b2 Default VFO channel for Module 17, making it start in M17 operating mode at boot 2022-05-27 21:48:47 +02:00
Silvano Seva 3d169484e9 Improved management of CODEC2 thread in M17 mode handler, now activated only when transmitting. Fixes a confict with RTX and MIC input streams causing the rtx thread to hang when PTT was pressed 2022-05-27 21:48:47 +02:00
Silvano Seva 54a89abcd0 Removed a printf left behind after debugging from M17 demodulator class and slightly cleaned up the code 2022-05-27 21:48:47 +02:00
Silvano Seva 163a2ef06a Updated Module 17 output stream driver to support also double buffered mode 2022-05-27 21:48:47 +02:00
Silvano Seva c9a4bfb199 Cleanup and refactoring of M17 modulator class, now using output streams for baseband signal output 2022-05-27 21:48:47 +02:00
Silvano Seva 0df1dc4f7e Extended output stream API to support also circular double-buffered mode, implemented output stream driver for MDx 2022-05-27 21:48:47 +02:00
Silvano Seva 034f5d9ee9 Removed API for audio stream playback from MDx tone generator 2022-05-27 21:48:47 +02:00
Silvano Seva 5c90c19bea Data conversion utilities 2022-05-27 21:48:47 +02:00
Silvano Seva 7891288030 Fixed compilation warnings generated by graphics.cpp 2022-05-27 21:48:47 +02:00
Silvano Seva 427c5f50b3 Made M17Demodulator::update() return a boolean indicating when a new decoded frame is ready 2022-05-27 21:48:47 +02:00
Niccolò Izzo 3372da2b64 Set Rx test to 48k 2022-05-27 21:48:47 +02:00
Niccolò Izzo 77aead675a Improve runtime performance of M17 Demodulator 
Tweaked the exponential moving average alpha factors to improve the
reactivity of the M17 demodulator.

TG-81
 2022-05-27 21:48:47 +02:00
Niccolò Izzo 5ef145cd39 Add fuzzy syncword validation 
Now syncword match is not exact but can tolerate up to two erroneous
bits.

TG-81
 2022-05-27 21:48:47 +02:00
Niccolò Izzo ca49b306b9 Update constants for M17 demodulation 
Constants were updated to increase performance based on baseband sample
collected with Module17.

TG-81
 2022-05-27 21:48:47 +02:00
Niccolò Izzo 2d8c696a09 Complete M17 demodulator implementation 
Make quantization work also on DC offset signal
Add samples plot code
Fix bug in buffer wrap around
Fix oob memory access in M17 modulator
Update tests with DC offset signal
Switch to 48KHz sample rate for Module17 and MD380
Add DC biasing script

TG-81
 2022-05-27 21:48:46 +02:00
Silvano Seva 10b8b59e21 Added to MDx tone generator API functions allowing user code to temporarily disable generation of 'beep' tones 2022-05-27 21:48:46 +02:00
Niccolò Izzo f9c23452bc Add plotting function to graphics library 
Added plotting function to graphics library which is native C++, so
refactored the graphics source file to allow that, consequently adapted
the hwconfig header files to be included also in C++ sources.
Propagated compile flags also to C++ sources, including asan what was
previously disabled for C++ compilation units.

TG-81
 2022-05-27 21:48:46 +02:00
Niccolò Izzo ae26cca46f Remove SPS 
Now M17_SAPLES_PER_SYMBOL is computed dinamically from sample rate.

TG-81
 2022-05-27 21:48:46 +02:00
Niccolò Izzo a091bca35f M17 Demodulator bugfixes 
Fixed several bugs in the M17 Demodulator code.

TG-81
 2022-05-27 21:48:46 +02:00
Silvano Seva d2c7be9cc8 Fixed bug affecting LSF reassembling from LICH segments inside M17 frame decoder class 2022-05-27 21:48:46 +02:00
Silvano Seva 35c1f062c6 Implementation of M17 frame encoder 2022-05-27 21:48:46 +02:00
Silvano Seva 82dd0a63f1 Clarification of naming: renamed DATA_SYNC_WORD to STREAM_SYNC_WORD and Audio_puncture to DATA_PUNCTURE 2022-05-27 21:48:46 +02:00
Silvano Seva 25087b0e02 Removed BUF_CIRC from the possible buffer management modes for an input audio stream 2022-05-27 21:48:46 +02:00
Silvano Seva 5fbd39959c Implementation of M17 frame decoder 2022-05-27 21:48:46 +02:00
Silvano Seva 49bd8ee2f4 Reorganised internal structure of M17LinkSetupFrame class, renamed M17Frame to M17StreamFrame and reorganised its structure 2022-05-27 21:48:46 +02:00
Silvano Seva c73aa92305 Reorganised M17LinkSetupframe and M17Frame classes, encapsulating structs defining their internal data structure 2022-05-27 21:48:46 +02:00
Silvano Seva 8f63d349a2 Temporarily deactivating M17 demodulator until fully debugged as it makes the radio crash 2022-05-27 21:48:46 +02:00
Niccolò Izzo 7a9bbfcaf2 Demodulator bugfix 
Fix several bugs in the demodulator code, tipycally sign errors.
 2022-05-27 21:48:46 +02:00
Niccolò Izzo 1a9b3c4168 Implement M17 demodulator logic 
Implemented frame wrapping logic and demodulator loop.
 2022-05-27 21:48:46 +02:00
Silvano Seva 963fbdc141 M17 mode handler: calling demodulator update function when in RX mode 2022-05-27 21:48:46 +02:00
Niccolò Izzo d22948a096 Fix naming error 
Replaced FM with OPMODE_FM and DMR with OPMODE_DMR.
 2022-05-27 21:48:46 +02:00
Niccolò Izzo 5bf4df75ba Fine tune demodulator to OpenRTX M17 baseband 
Fine tuned M17 demodulator with code generated from OpenRTX itself.

TG-81
 2022-05-27 21:48:46 +02:00
Niccolò Izzo 4b498689f5 Replace RRC filter taps, update M17 testsuite 
RRC filter taps have been replaced with the ones generated by Wojciech,
a new baseband for the M17 demodulation testsuite has been generated,
using OpenRTX itself and some further minor changes.

TG-81
 2022-05-27 21:48:46 +02:00
Niccolò Izzo 3163dd49d7 Add M17 demodulator code and tests 
Added implementation of the M17 4FSK demodulator, including clock
recovery, phase detection, and quantization algorithms.
A testsuite is also included to do regression testing against a
reference baseband pre-generated and the corresponding reference
bitstream.

A 1% BER is still present due to a fault likely in the RRC filtering,
since the eye diagram of the filtered stream is bad.

TG-81
 2022-05-27 21:48:46 +02:00