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Fix LR2021 occasionally stopping reception after a TX power change #3218

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Fix LR2021 occasionally stopping reception after a TX power change #3218

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11 changes: 11 additions & 0 deletions src/helpers/radiolib/RadioLibWrappers.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -48,6 +48,17 @@ uint32_t RadioLibWrapper::getRngSeed() {
}

void RadioLibWrapper::setTxPower(int8_t dbm) {
#if defined(USE_LR2021)
// On LR2021, setOutputPower() writes the PA config and TxParams, which are
// standby-only commands. recvRaw() keeps state == STATE_RX after readData on
// this platform ("LR2021 stays in Rx"), so - unlike the SX126x path, which
// falls back to STATE_IDLE and re-arms on the next recvRaw() - nothing calls
// startReceive() again by itself. Writing the PA config while listening could
// therefore leave the receiver down until the next reboot. Drop to standby
// first and let checkRecv() re-arm Rx, as resetAGC() and
// applySideDetectorConfig() already do.
idle();
#endif
_radio->setOutputPower(dbm);
}

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