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when doing AGC reset, call Calibrate(0x7F)

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1. warm sleep
2. wake to stdby
3. Calibrate(0x7F) to reset all internal blocks
4. re-apply DIO2 RF / boosted gain & register patch to make sure
everything is as it was
This commit is contained in:
Wessel Nieboer 2026-02-19 16:16:21 +01:00 • committed by Wessel Nieboer
parent f81ec4b14c
commit a2dc2eb50c
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6 changed files with 114 additions and 5 deletions
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10
src/helpers/radiolib/RadioLibWrappers.cpp
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@ -53,15 +53,15 @@ void RadioLibWrapper::triggerNoiseFloorCalibrate(int threshold) {
}
}
void RadioLibWrapper::doResetAGC() {
_radio->sleep(); // warm sleep to reset analog frontend
}
void RadioLibWrapper::resetAGC() {
// make sure we're not mid-receive of packet!
if ((state & STATE_INT_READY) != 0 || isReceivingPacket()) return;
// Warm sleep powers down the entire analog frontend (including AGC), forcing a
// fresh gain calibration on the next startReceive(). A plain standby->startReceive
// cycle does NOT reset the AGC — the analog state can persist across STDBY_RC.
// The ~1-2 ms sleep gap is negligible vs the preamble budget (131 ms at SF11/BW250).
_radio->sleep();
doResetAGC();
state = STATE_IDLE; // trigger a startReceive()
}