phil dani
Simple Interrupt example
main.cpp@0:5163e0741765, 2013-08-29 (annotated)
- Committer:
- Kit1
- Date:
- Thu Aug 29 17:49:47 2013 +0000
- Revision:
- 0:5163e0741765
Interrupt example
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| Kit1 | 0:5163e0741765 | 1 | /* Program 10: Simple interrupt example. External input causes interrupt, while led flashes */ |
| Kit1 | 0:5163e0741765 | 2 | #include "mbed.h" |
| Kit1 | 0:5163e0741765 | 3 | |
| Kit1 | 0:5163e0741765 | 4 | InterruptIn button(p5); //define and name the interrupt input |
| Kit1 | 0:5163e0741765 | 5 | DigitalOut led(LED1); |
| Kit1 | 0:5163e0741765 | 6 | DigitalOut flash(LED4); |
| Kit1 | 0:5163e0741765 | 7 | |
| Kit1 | 0:5163e0741765 | 8 | void ISR1() { //this is the response to interrupt, i.e. the ISR |
| Kit1 | 0:5163e0741765 | 9 | led = !led; |
| Kit1 | 0:5163e0741765 | 10 | } |
| Kit1 | 0:5163e0741765 | 11 | |
| Kit1 | 0:5163e0741765 | 12 | int main() { |
| Kit1 | 0:5163e0741765 | 13 | button.rise(&ISR1); // attach the address of the ISR function to the |
| Kit1 | 0:5163e0741765 | 14 | // interrupt rising edge |
| Kit1 | 0:5163e0741765 | 15 | while(1) { // continuous loop, ready to be interrupted |
| Kit1 | 0:5163e0741765 | 16 | flash = !flash; |
| Kit1 | 0:5163e0741765 | 17 | /* if(flash=1) |
| Kit1 | 0:5163e0741765 | 18 | __disable_irq(); //disable interrupts |
| Kit1 | 0:5163e0741765 | 19 | else |
| Kit1 | 0:5163e0741765 | 20 | __enable_irq(); //enable interrupts */ |
| Kit1 | 0:5163e0741765 | 21 | wait(1); |
| Kit1 | 0:5163e0741765 | 22 | } |
| Kit1 | 0:5163e0741765 | 23 | } |