Val Glynn
CA 2.3 Original Code
main.cpp@0:6855a1935929, 2020-07-26 (annotated)
- Committer:
- vmg
- Date:
- Sun Jul 26 20:57:22 2020 +0000
- Revision:
- 0:6855a1935929
CA 2.3 Original Code
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| vmg | 0:6855a1935929 | 1 | #include "mbed.h" |
| vmg | 0:6855a1935929 | 2 | |
| vmg | 0:6855a1935929 | 3 | InterruptIn joystickcenter(p14); |
| vmg | 0:6855a1935929 | 4 | InterruptIn button(p9); |
| vmg | 0:6855a1935929 | 5 | |
| vmg | 0:6855a1935929 | 6 | DigitalOut led(LED1); DigitalOut flash(LED4); |
| vmg | 0:6855a1935929 | 7 | |
| vmg | 0:6855a1935929 | 8 | void flip() { |
| vmg | 0:6855a1935929 | 9 | led = !led; // toggles the led when the joystick button is pressed. |
| vmg | 0:6855a1935929 | 10 | } |
| vmg | 0:6855a1935929 | 11 | |
| vmg | 0:6855a1935929 | 12 | int main() { |
| vmg | 0:6855a1935929 | 13 | joystickcenter.rise(&flip); // attach the function address to the rising edge |
| vmg | 0:6855a1935929 | 14 | button.mode(PullUp); // With this, no external pullup resistor needed |
| vmg | 0:6855a1935929 | 15 | button.rise(&flip); // attach the function address to the rising edge |
| vmg | 0:6855a1935929 | 16 | while(1) { // wait around, interrupts will interrupt this! |
| vmg | 0:6855a1935929 | 17 | flash = !flash; // turns LED4 on if off, off if on |
| vmg | 0:6855a1935929 | 18 | wait(0.25); // the instruction to wait for a quarter-second |
| vmg | 0:6855a1935929 | 19 | } |
| vmg | 0:6855a1935929 | 20 | } |
| vmg | 0:6855a1935929 | 21 |