w2interrupt

Dependencies:   mbed

main.cpp

Committer:
occle
Date:
2017-01-12
Revision:
0:8dc791260768

File content as of revision 0:8dc791260768:

/* External input causes interrupt, while led flashes*/
#include "mbed.h"
InterruptIn button(SW2); //define and name the interrupt input
DigitalOut led(LED1); //red led defined as "led"
DigitalOut flash(LED2); //green led defined as "flash"

void ISR1() { //this is the response to interrupt, i.e. the ISR
   led = !led;
}
int main() {
    button.rise(&ISR1); // attach the address of the ISR function to the
// interrupt rising edge

    while(1) { // continuous loop, ready to be interrupted
      flash = !flash; // green led flashes
      wait(0.25); // with time interval of 0.25s
    }
}