NRF52840 Watchdog Reset code question

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Hi there,
Are you using Arduino IDE?
either way if you call the Sleep function when the watchdog fires, the MCU will be reset.
Like this:

void goToPowerOff() {
  //sleepFlash();
  setLedRGB(false, false, false);
  Serial.println("Going to SLEEP System OFF  Tap to WAKE \n");
  display.clearDisplay();
  display.setCursor(10, 8);
  display.setTextSize(3);
  display.print("SLEEP");
  display.display();
  delay(500);
  display.clearDisplay();
  display.display();
  setupDoubleTapInterrupt();  // not needed here, if already applied..
  delay(2000);                // delay seems important to apply settings, before going to System OFF
  //Ensure interrupt pin from IMU is set to wake up device
  // nrf_gpio_cfg_sense_input(digitalPinToInterrupt(int2Pin), NRF_GPIO_PIN_PULLDOWN, NRF_GPIO_PIN_SENSE_HIGH);
  delay(2000);  // delay seems important to apply settings, before going to System OFF
  uint32_t pin = D2;
  pin = g_ADigitalPinMap[pin];
  nrf_gpio_cfg_sense_input(pin, NRF_GPIO_PIN_PULLDOWN, NRF_GPIO_PIN_SENSE_HIGH);
  delay(2000);  //15 seconds before turns off (if USB is plugged in, that circuit will still draw 2mA)
  Serial.println(" You're NOT doing anything, I'll Sleep.");
  delay(2000);
  sd_power_system_off();
  NRF_POWER->SYSTEMOFF = 1;
}

HTH
GL :slight_smile: PJ
be sure to change the HIGH NRF_GPIO_PIN_SENSE_HIGH to LOW and remove the delays that are noted for good Sleep!