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esp32 watchdog

<code cpp>

#include “esp_system.h” void IRAM_ATTR resetModule() {

ets_printf("reboot\n");
esp_restart();

}

timer = timerBegin(0, 80, true);                  //timer 0, div 80
timerAttachInterrupt(timer, &resetModule, true);  //attach callback
const int wdtTimeout = 3000;  //time in ms to trigger the watchdog
timerAlarmWrite(timer, wdtTimeout * 1000, false); //set time in us
timerAlarmEnable(timer);                          //enable interrupt


timerWrite(timer, 0); //reset timer (feed watchdog)

<code>