Interrupts
Interrupts example for Arduino Uno #include<avr/sleep.h> #include <avr/power.h> volatile int f_wdt=1; int flag=false; void setup() { // put your setup code here, to run once: pinMode(LED_BUILTIN,OUTPUT); digitalWrite(LED_BUILTIN,LOW); attachInterrupt(digitalPinToInterrupt(2), blink, CHANGE); Serial.begin(9600); //LowPower.sleep(500000); watch(); } void enter_sleep() { set_sleep_mode(SLEEP_MODE_PWR_DOWN); sleep_enable(); sleep_mode(); sleep_disable(); sleep_enable(); power_all_enable(); } ISR(WDT_vect){ if(f_wdt==0) f_wdt=1; } void watch() { MCUSR&=~(1<<WDRF); WDTCSR |= (1<<WDCE) | (1<<WDE); WDTCSR = (1<<WDP3) | (0<<WDP2) | (0<<WDP1) | (1<<WDP0); WDTCSR |= _BV(WDIE); } void blink() { f...