Alex Wood
Example program using interrupts with PIR motion sensor.
main.cpp@0:8aaf23a881c1, 2015-03-06 (annotated)
- Committer:
- awood37
- Date:
- Fri Mar 06 22:02:17 2015 +0000
- Revision:
- 0:8aaf23a881c1
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| awood37 | 0:8aaf23a881c1 | 1 | #include "mbed.h" |
| awood37 | 0:8aaf23a881c1 | 2 | //example using InterruptIn with the input from the PIR motion sensors |
| awood37 | 0:8aaf23a881c1 | 3 | InterruptIn alarm(p11); |
| awood37 | 0:8aaf23a881c1 | 4 | DigitalOut led(LED1); |
| awood37 | 0:8aaf23a881c1 | 5 | DigitalOut flash(LED4); |
| awood37 | 0:8aaf23a881c1 | 6 | |
| awood37 | 0:8aaf23a881c1 | 7 | void flip() { |
| awood37 | 0:8aaf23a881c1 | 8 | led = !led; |
| awood37 | 0:8aaf23a881c1 | 9 | } |
| awood37 | 0:8aaf23a881c1 | 10 | |
| awood37 | 0:8aaf23a881c1 | 11 | int main() { |
| awood37 | 0:8aaf23a881c1 | 12 | alarm.mode(PullUp); |
| awood37 | 0:8aaf23a881c1 | 13 | wait(2); |
| awood37 | 0:8aaf23a881c1 | 14 | alarm.fall(&flip); // attach the address of the flip function to the falling edge |
| awood37 | 0:8aaf23a881c1 | 15 | while(1) { // wait around, interrupts will interrupt |
| awood37 | 0:8aaf23a881c1 | 16 | flash = !flash; |
| awood37 | 0:8aaf23a881c1 | 17 | wait(0.25); |
| awood37 | 0:8aaf23a881c1 | 18 | } |
| awood37 | 0:8aaf23a881c1 | 19 | } |