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mirror of https://github.com/f4exb/sdrangel.git synced 2026-06-26 21:43:25 -04:00
Tom Hensel abc8bd32df soapysdroutput: fix SoapyUHD TX signal path and MCR pinning
Fix multiple issues preventing SoapySDR output from producing RF:

- handleInputMessages() never called in DSP engine thread (Qt signal
  lost without event loop) - scheduled properly
- setGain() moved to start() post-activation (pre-activation gain
  silently fails on SoapyUHD)
- fullScale threshold corrected for CS16 format detection
- Timed first write pattern matching gr4-lora SoapySink

MCR pinning for SoapyUHD: inject auto_tick_rate=0 in
DeviceSoapySDR device-open path to prevent UHD from re-deriving the
master clock rate on set_tx_rate(), which breaks the decimator chain
and produces no RF. Also reads SDRANGEL_USRP_MASTER_CLOCK_RATE_HZ env
var for optional MCR override.

TX diagnostic counters: SoapySDROutputThread tracks packets,
underflows, errors. Exposed via REST as streamSettingsArgs
key-value pairs.
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