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Merge pull request #2987 from entr0p1/fix/nrf52-shutdownperipherals

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NRF52Board - ShutdownPeripherals() housekeeping
This commit is contained in:
fdlamotte
2026-07-20 11:53:56 -04:00
committed by GitHub
parent da67328017 aee53a8c3e
commit 427cd7c263
1 changed files with 27 additions and 3 deletions
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src/helpers/NRF52Board.cpp
+27 -3
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@@ -314,14 +314,38 @@ float NRF52Board::getMCUTemperature() {
void NRF52Board::shutdownPeripherals() {
// Power off the display if any
#ifdef DISPLAY_CLASS
display.turnOff();
if (display.isOn()) {
display.turnOff();
}
#endif
// Prep LoRa radio for power down
#ifdef P_LORA_RESET
digitalWrite(P_LORA_RESET, HIGH); // preload OUT latch so pinMode can't glitch NRESET low
pinMode(P_LORA_RESET, OUTPUT);
digitalWrite(P_LORA_RESET, LOW); // deliberate hardware reset (datasheet: >=100us)
delayMicroseconds(200);
digitalWrite(P_LORA_RESET, HIGH);
#endif
#if defined(P_LORA_SCLK) && defined(P_LORA_MISO) && defined(P_LORA_MOSI)
SPI.setPins(P_LORA_MISO, P_LORA_SCLK, P_LORA_MOSI);
SPI.begin(); // SPI may not be started on some shutdown paths, need it to shut down radio
#endif
#ifdef P_LORA_BUSY
pinMode(P_LORA_BUSY, INPUT);
uint32_t started_at = millis();
while (digitalRead(P_LORA_BUSY) && millis() - started_at < 10) {} //wait for radio to be ready
#endif
#ifdef P_LORA_NSS
pinMode(P_LORA_NSS, OUTPUT);
digitalWrite(P_LORA_NSS, HIGH);
#endif
// Power off LoRa
radio_driver.powerOff();
// Keep LoRa inactive during deepsleep
digitalWrite(P_LORA_NSS, HIGH);
#ifdef P_LORA_NSS
digitalWrite(P_LORA_NSS, HIGH);
#endif
// Power off GPS if any
if(sensors.getLocationProvider() != NULL) {