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Fix hardware watchdog resets by removing rate limiting from feedWatchDog() #271

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Fix hardware watchdog resets by removing rate limiting from feedWatchDog() #271

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Copilot Nov 16, 2025
15bd2f7
Fix hardware watchdog by removing rate limiting in feedWatchDog()
Copilot Nov 16, 2025
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19 changes: 11 additions & 8 deletions OTGW-Core.ino
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Original file line number Diff line number Diff line change
Expand Up @@ -276,18 +276,21 @@ void WatchDogEnabled(byte stateWatchdog){
Wire.endTransmission(); //That's all there is...
}

//===[ Feed the WatchDog before it bites! (1x per second) ]===
//===[ Feed the WatchDog before it bites! ]===
void feedWatchDog() {
//make sure to do this at least once a second
//Feed the watchdog every time this function is called to prevent hardware watchdog resets
//during blocking operations (e.g., serial waits, MQTT operations, file I/O)
//==== feed the WD over I2C ====
// Address: 0x26
// I2C Watchdog feed
DECLARE_TIMER_MS(timerWD, 1000, SKIP_MISSED_TICKS);
if DUE(timerWD)
// I2C Watchdog feed - always execute
Wire.beginTransmission(EXT_WD_I2C_ADDRESS); //Nodoshop design uses the hardware WD on I2C, address 0x26
Wire.write(0xA5); //Feed the dog, before it bites.
Wire.endTransmission(); //That's all there is...

//Blink LED at most once per second to provide visual feedback without excessive toggling
DECLARE_TIMER_MS(timerLEDBlink, 1000, SKIP_MISSED_TICKS);
if DUE(timerLEDBlink)
{
Wire.beginTransmission(EXT_WD_I2C_ADDRESS); //Nodoshop design uses the hardware WD on I2C, address 0x26
Wire.write(0xA5); //Feed the dog, before it bites.
Wire.endTransmission(); //That's all there is...
blinkLEDnow(LED1);
}
//yield();
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