Add script to receive the demodulated data from Module17/radio, to use
it you need to add in meson.build:12 the ENABLE_DEMOD_LOG define.
Build and flash into the platform, build and run scripts/get_demod_log,
turn on the radio, remember to turn of radio before you terminate
get_demod_log, print the output with
`scripts/plot_m17_demod_csv.py serial_demod_log.csv`.
TG-81
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
Now a default callsign "OPNRTX" is used in M17 mode, and when the user
sets its own callsign in the settings menu, that one is correctly used
instead. Add initialization to RTX data structure.
Silvano Seva
Niccolò Izzo