Jack Occleshaw
w2interrupt
main.cpp@0:8dc791260768, 2017-01-12 (annotated)
- Committer:
- occle
- Date:
- Thu Jan 12 15:42:21 2017 +0000
- Revision:
- 0:8dc791260768
w2interrupt
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| occle | 0:8dc791260768 | 1 | /* External input causes interrupt, while led flashes*/ |
| occle | 0:8dc791260768 | 2 | #include "mbed.h" |
| occle | 0:8dc791260768 | 3 | InterruptIn button(SW2); //define and name the interrupt input |
| occle | 0:8dc791260768 | 4 | DigitalOut led(LED1); //red led defined as "led" |
| occle | 0:8dc791260768 | 5 | DigitalOut flash(LED2); //green led defined as "flash" |
| occle | 0:8dc791260768 | 6 | |
| occle | 0:8dc791260768 | 7 | void ISR1() { //this is the response to interrupt, i.e. the ISR |
| occle | 0:8dc791260768 | 8 | led = !led; |
| occle | 0:8dc791260768 | 9 | } |
| occle | 0:8dc791260768 | 10 | int main() { |
| occle | 0:8dc791260768 | 11 | button.rise(&ISR1); // attach the address of the ISR function to the |
| occle | 0:8dc791260768 | 12 | // interrupt rising edge |
| occle | 0:8dc791260768 | 13 | |
| occle | 0:8dc791260768 | 14 | while(1) { // continuous loop, ready to be interrupted |
| occle | 0:8dc791260768 | 15 | flash = !flash; // green led flashes |
| occle | 0:8dc791260768 | 16 | wait(0.25); // with time interval of 0.25s |
| occle | 0:8dc791260768 | 17 | } |
| occle | 0:8dc791260768 | 18 | } |