Hello everyone,
What do I want to do?
--> Arduino starts sleeping mode.
--> It wakes up when the digital pin 2 (int 0) pressed(triggered push button) and wait signals any buttons.
--> until the signal comes any button, Arduino does nothing.
-->after any button is pressed, arduino does the orders and then it sleeps again.
Thank you in advance 
sample.zip (101 KB)
Try this,
#include <avr/sleep.h>
int wakePin = 2; // pin used for waking up
int led=13;
void wakeUpNow() {
// execute code here after wake-up before returning to the loop() function
// timers and code using timers (serial.print and more...) will not work here.
// we don't really need to execute any special functions here, since we
// just want the thing to wake up
}
void setup() {
pinMode(wakePin, INPUT_PULLUP);
pinMode(led, OUTPUT);
attachInterrupt(0, wakeUpNow, LOW); // use interrupt 0 (pin 2) and run function wakeUpNow when pin 2 gets LOW
}
void sleepNow() {
set_sleep_mode(SLEEP_MODE_PWR_DOWN); // sleep mode is set here
sleep_enable(); // enables the sleep bit in the mcucr register
attachInterrupt(0,wakeUpNow, LOW); // use interrupt 0 (pin 2) and run function
sleep_mode(); // here the device is actually put to sleep!!
// THE PROGRAM CONTINUES FROM HERE AFTER WAKING UP
sleep_disable(); // first thing after waking from sleep: disable sleep...
detachInterrupt(0); // disables interrupt 0 on pin 2 so the wakeUpNow code will not be executed during normal running time.
}
void loop() {
digitalWrite(led, HIGH);
delay(1000);
digitalWrite(led, LOW);
sleepNow(); // sleep function called here
}
--> Arduino starts sleeping mode.
--> It wakes up when the digital pin 2 (int 0) pressed(triggered push button) and wait signals any buttons.
--> until the signal comes any button, Arduino does nothing.
-->after any button is pressed, arduino does the orders and then it sleeps again.
i want to do that. i tried many times these code. it's just only sleep and awake thing. i need a different solution. thanks for reply.