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Feed external hardware watchdog on Heltec Tower V2 (aka MeshTower V2) #2904

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Feed external hardware watchdog on Heltec Tower V2 (aka MeshTower V2) #2904

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14 changes: 14 additions & 0 deletions variants/heltec_tower_v2/HeltecTowerV2Board.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -58,6 +58,20 @@ void HeltecTowerV2Board::begin() {
pinMode(PIN_GPS_STANDBY, OUTPUT);
digitalWrite(PIN_GPS_STANDBY, HIGH);
loRaFEMControl.init();

#ifdef HAS_HARDWARE_WATCHDOG
pinMode(HARDWARE_WATCHDOG_DONE, OUTPUT);
digitalWrite(HARDWARE_WATCHDOG_DONE, LOW);
pinMode(HARDWARE_WATCHDOG_WAKE, INPUT);

watchdog_timer.begin(60000, [](TimerHandle_t xTimerID) {
(void)xTimerID;
MESH_DEBUG_PRINTLN("PWRMGT: Fed hardware watchdog (t=%lu ms)", millis());
digitalWrite(HARDWARE_WATCHDOG_DONE, HIGH);
digitalWrite(HARDWARE_WATCHDOG_DONE, LOW);
});
watchdog_timer.start();
#endif
}

void HeltecTowerV2Board::onBeforeTransmit() {
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4 changes: 4 additions & 0 deletions variants/heltec_tower_v2/HeltecTowerV2Board.h
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Expand Up @@ -21,4 +21,8 @@ class HeltecTowerV2Board : public NRF52BoardDCDC {
uint16_t getBattMilliVolts() override;
const char* getManufacturerName() const override;
void powerOff() override;
#ifdef HAS_HARDWARE_WATCHDOG
private:
SoftwareTimer watchdog_timer;
#endif
};