Enable AVR watchdog timer

timers.ino

@@ -14,6 +14,10 @@ Timers are typically low resolution (Compared to Schedulers), with maximum frequ
 #include "globals.h"
 #include "sensors.h"
 
+#if defined(CORE_AVR)
+  #include <avr/wdt.h>
+#endif
+
 void initialiseTimers() 
 {  
 #if defined(CORE_AVR) //AVR chips use the ISR for this
@@ -26,6 +30,10 @@ void initialiseTimers()
    /* Now configure the prescaler to CPU clock divided by 128 = 125Khz */
    TCCR2B |= (1<<CS22)  | (1<<CS20); // Set bits
    TCCR2B &= ~(1<<CS21);             // Clear bit
+
+   //Enable the watchdog timer for 2 second resets (Good reference: https://tushev.org/articles/arduino/5/arduino-and-watchdog-timer)
+   wdt_enable(WDTO_2S);
+   
 #elif defined (CORE_TEENSY)
    //Uses the PIT timer on Teensy.
    lowResTimer.begin(oneMSInterval, 1000);
@@ -74,6 +82,9 @@ unsigned long targetTachoPulseTime;
   if (loop250ms == 250) 
   {
     loop250ms = 0; //Reset Counter.
+    #if defined(CORE_AVR)
+      wdt_reset(); //Reset watchdog timer
+    #endif
   }
   
   //Loop executed every 1 second (1ms x 1000 = 1000ms)