Zhe Hu
interrupt trigger on both rising and falling edge (for level sensitive triggering)
main.cpp@0:caf032e2b330, 2010-07-22 (annotated)
- Committer:
- iamhuzhe
- Date:
- Thu Jul 22 02:33:32 2010 +0000
- Revision:
- 0:caf032e2b330
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| iamhuzhe | 0:caf032e2b330 | 1 | #include "mbed.h" |
| iamhuzhe | 0:caf032e2b330 | 2 | |
| iamhuzhe | 0:caf032e2b330 | 3 | InterruptIn button(p8); |
| iamhuzhe | 0:caf032e2b330 | 4 | DigitalIn bb(p8); |
| iamhuzhe | 0:caf032e2b330 | 5 | |
| iamhuzhe | 0:caf032e2b330 | 6 | DigitalOut led(LED4); |
| iamhuzhe | 0:caf032e2b330 | 7 | DigitalOut flash(LED3); |
| iamhuzhe | 0:caf032e2b330 | 8 | Timeout t1; |
| iamhuzhe | 0:caf032e2b330 | 9 | Timeout t2; |
| iamhuzhe | 0:caf032e2b330 | 10 | |
| iamhuzhe | 0:caf032e2b330 | 11 | int b1; |
| iamhuzhe | 0:caf032e2b330 | 12 | int b2; |
| iamhuzhe | 0:caf032e2b330 | 13 | void flip_again() { |
| iamhuzhe | 0:caf032e2b330 | 14 | if (bb==1) { |
| iamhuzhe | 0:caf032e2b330 | 15 | led = 1; |
| iamhuzhe | 0:caf032e2b330 | 16 | |
| iamhuzhe | 0:caf032e2b330 | 17 | } |
| iamhuzhe | 0:caf032e2b330 | 18 | b1 = 0; |
| iamhuzhe | 0:caf032e2b330 | 19 | |
| iamhuzhe | 0:caf032e2b330 | 20 | } |
| iamhuzhe | 0:caf032e2b330 | 21 | |
| iamhuzhe | 0:caf032e2b330 | 22 | void flip_again2() { |
| iamhuzhe | 0:caf032e2b330 | 23 | |
| iamhuzhe | 0:caf032e2b330 | 24 | if (bb==0) { |
| iamhuzhe | 0:caf032e2b330 | 25 | led = 0; |
| iamhuzhe | 0:caf032e2b330 | 26 | |
| iamhuzhe | 0:caf032e2b330 | 27 | } |
| iamhuzhe | 0:caf032e2b330 | 28 | b2 = 0; |
| iamhuzhe | 0:caf032e2b330 | 29 | |
| iamhuzhe | 0:caf032e2b330 | 30 | |
| iamhuzhe | 0:caf032e2b330 | 31 | } |
| iamhuzhe | 0:caf032e2b330 | 32 | |
| iamhuzhe | 0:caf032e2b330 | 33 | void flip() { |
| iamhuzhe | 0:caf032e2b330 | 34 | if (b1 == 0) { |
| iamhuzhe | 0:caf032e2b330 | 35 | b1 = 1; |
| iamhuzhe | 0:caf032e2b330 | 36 | t1.attach_us(&flip_again,100); |
| iamhuzhe | 0:caf032e2b330 | 37 | } |
| iamhuzhe | 0:caf032e2b330 | 38 | } |
| iamhuzhe | 0:caf032e2b330 | 39 | |
| iamhuzhe | 0:caf032e2b330 | 40 | |
| iamhuzhe | 0:caf032e2b330 | 41 | void flip2() { |
| iamhuzhe | 0:caf032e2b330 | 42 | if (b2 == 0) { |
| iamhuzhe | 0:caf032e2b330 | 43 | b2 = 1; |
| iamhuzhe | 0:caf032e2b330 | 44 | t2.attach_us(&flip_again2,100); |
| iamhuzhe | 0:caf032e2b330 | 45 | } |
| iamhuzhe | 0:caf032e2b330 | 46 | } |
| iamhuzhe | 0:caf032e2b330 | 47 | |
| iamhuzhe | 0:caf032e2b330 | 48 | |
| iamhuzhe | 0:caf032e2b330 | 49 | |
| iamhuzhe | 0:caf032e2b330 | 50 | int main() { |
| iamhuzhe | 0:caf032e2b330 | 51 | |
| iamhuzhe | 0:caf032e2b330 | 52 | button.mode(PullDown); |
| iamhuzhe | 0:caf032e2b330 | 53 | button.rise(&flip); // attach the address of the flip function to the rising edge |
| iamhuzhe | 0:caf032e2b330 | 54 | button.fall(&flip2); |
| iamhuzhe | 0:caf032e2b330 | 55 | while (1) { // wait around, interrupts will interrupt this! |
| iamhuzhe | 0:caf032e2b330 | 56 | flash = !flash; |
| iamhuzhe | 0:caf032e2b330 | 57 | |
| iamhuzhe | 0:caf032e2b330 | 58 | wait(1); |
| iamhuzhe | 0:caf032e2b330 | 59 | } |
| iamhuzhe | 0:caf032e2b330 | 60 | } |