d16eb04696
Reorganised data structures and functions to manage date and time
2022-07-02 10:28:28 +02:00
45d919f50f
Reorganised GPS driver to allow for non-blocking acquisition of NMEA sentences
2022-07-02 10:28:28 +02:00
3cc5852ef3
Refactored keyboard thread by moving the keypad scan logic to a dedicated function inside input.h
2022-07-02 10:28:28 +02:00
d2e0b7d940
Improved heap memory management in M17 modulator class
2022-06-05 12:27:25 +02:00
a1888ae19e
Improved heap memory management in M17 demodulator class
2022-06-05 12:24:43 +02:00
8b5b6ed571
Moved OpenRTX startup code from main.c to dedicated openrtx_init() and openrtx_run() functions in a separate source file.
2022-06-02 10:01:34 +02:00
316e588bc3
Updated copyright headers
2022-06-02 09:56:05 +02:00
ae12a2126a
Implement codeplug read and write functions
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Implemented remaining codeplug functions to read, write and insert
codeplug entries. Fix bugs in ui code. Add unit tests.
TG-428
2022-06-01 16:05:35 +02:00
dc250a25d6
Implement new codeplug interface
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The new codeplug interface was implemented for linux and retrofitted to
all the existing OpenRTX platforms. Limited unit testing was also
implemented.
TG-428
2022-06-01 15:59:27 +02:00
cbd3922325
Cleanup and reorganisation of state header file, new OpenRTX CPS data structure
2022-06-01 15:04:17 +02:00
da22d6ff64
Separated interface for CPS loading from the non volatile memory one
2022-06-01 14:56:33 +02:00
c3cfaba4b2
Renamed zones into banks to align to M17 codeplug naming convention.
2022-06-01 14:56:22 +02:00
4d4ebae2f3
Added configurable phase inversion to M17 demodulator. Forced enabling of phase inversion for MD3x0 VHF radios.
2022-05-30 19:19:01 +02:00
bfa3494777
Fixed bug in M17 demodulator causing the M17Demodulator::getFrame() function to return the frame currently being processed instead of the fully demodulated one.
2022-05-27 21:49:33 +02:00
63f4c787c0
Moved helper functions for M17 Golay to a dedicated source file
2022-05-27 21:49:33 +02:00
1620889640
Reorganised main FSM inside M17 operating mode handler
2022-05-27 21:49:33 +02:00
6322cb49a4
Cleanup demodulator, improved quantization log
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Unified offset and phase variable to reduce the chance of off-by-ones
between buffers. Improved logging on linux and module17 adding
quantization indices.
TG-81
2022-05-27 21:49:33 +02:00
ff7a28ff59
RingBuffer class: implemented eraseElement() function, rewritten the pop() function in a cleaner way, fixed a bug in the pop() function causing the not_full condition variable to be never rised.
2022-05-27 21:49:33 +02:00
29ad0830f0
M17 demodulation improvement
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Add logging in syncword sweep, fix unsigned underflow bug,
fixed symbol average computation for quantization.
Do syncword sweep whenever available.
TG-81
2022-05-27 21:49:33 +02:00
d17d683b2d
M17 code cleanup pass: reorganised data type definitions and constants
2022-05-27 21:49:33 +02:00
7aff678069
Improved robustness of frame type detection, now based on minimum hamming distance between syncwords
2022-05-27 21:49:33 +02:00
c987848382
Add syncword hot re-sync fix DC removal
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DC removal filter had a bug that created weird positive spikes on
Module17, add a syncword hot re-sync to be able to correct small phase
errors that appear every five seconds more or less.
TG-81
2022-05-27 21:48:47 +02:00
1f77c2af6c
Reorganised logging inside M17 demodulator, logging is disabled by default.
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On non-linux devices log data is printed on the serial port in raw binary format.
2022-05-27 21:48:47 +02:00
6be567a781
Implementation of a statically allocated ring buffer with blocking and non-blocking push and pop
2022-05-27 21:48:47 +02:00
ef61c532a3
Cleaned up quantization average
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Now average is computed over all the syncword symbols, for each syncword
as a simple average.
TG-81
2022-05-27 21:48:47 +02:00
5fe5b0e578
Refactor M17 logging
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Refactored logging functions to enable in-system logging on Module17 and
MDx radios.
TG-81
2022-05-27 21:48:47 +02:00
361308be16
Generator of pseudorandom binary sequence compliant with M17 specification
2022-05-27 21:48:47 +02:00
3988540b6c
Changed coefficients for the 41-tap, 24kHz RRC filter to have unitary input-output gain
2022-05-27 21:48:47 +02:00
c3c984d504
Add syncword fuzzy detection
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Frame decoder now tolerates bit error in syncword, removed syncword type
detection in demodulator code.
TG-81
2022-05-27 21:48:47 +02:00
6b31a73f42
Corrected RRC gain and changed HR_C5000 modulation factor and input gain to have the correct 2.4kHz deviation when transmitting M17 with an MD3x0 radio
2022-05-27 21:48:47 +02:00
2d59658d60
Switch M17 Rx sample rate to 5SPS
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Due to the RRC computation sometimes violating the timing constraints,
we switched the M17 demodulator to 5 samples per symbol (24KHz), thus
dividing the processing time by four ar the number of samples halves as
well as the number of taps of the RRC.
Minor adaptation on the code followed.
TG-81
2022-05-27 21:48:47 +02:00
63bd864674
Fix M17 Rx LED
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Now LED turns on when a syncword is successfully detected, not just when
the correlation is sufficiently high.
TG-81
2022-05-27 21:48:47 +02:00
c4483edff0
Improve quantization strategy
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Now quantization is performed by averaging syncword samples and dividing
the resulting threshold by a constant.
TG-81
2022-05-27 21:48:47 +02:00
7d1b89550e
Rewrite quantization algorithm
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Quantization algorithm is now based on separate rolling averages for
positive and negative samples.
Merged csv outputs from syncword search and quantization on Linux.
TG-81
2022-05-27 21:48:47 +02:00
aa9fcc26b7
Remove useless DC bias in quantization
...
TG-81
2022-05-27 21:48:47 +02:00
d1651a702c
Add proper DC-bias removal, tuned EMAs
2022-05-27 21:48:47 +02:00
da5c453852
Implemented unpacking and decoding of M17 audio stream frames
2022-05-27 21:48:47 +02:00
beca0d2acc
Reorganised constants inside M17 demodulator class
2022-05-27 21:48:47 +02:00
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
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
b144657257
Moved CODEC2 management to a dedicated module
2022-05-27 21:48:47 +02:00
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
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
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
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
c9a4bfb199
Cleanup and refactoring of M17 modulator class, now using output streams for baseband signal output
2022-05-27 21:48:47 +02:00
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
5c90c19bea
Data conversion utilities
2022-05-27 21:48:47 +02:00
427c5f50b3
Made M17Demodulator::update() return a boolean indicating when a new decoded frame is ready
2022-05-27 21:48:47 +02:00
77aead675a
Improve runtime performance of M17 Demodulator
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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
Silvano Seva
Niccolò Izzo