IT Tralee lab experiments
main.cpp@0:5fb7a5f9f20b, 2020-07-26 (annotated)
- Committer:
- bmol
- Date:
- Sun Jul 26 13:30:47 2020 +0000
- Revision:
- 0:5fb7a5f9f20b
IT Tralee;
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| bmol | 0:5fb7a5f9f20b | 1 | #include "mbed.h" |
| bmol | 0:5fb7a5f9f20b | 2 | |
| bmol | 0:5fb7a5f9f20b | 3 | InterruptIn joystickcenter(p14); |
| bmol | 0:5fb7a5f9f20b | 4 | InterruptIn button(p9); |
| bmol | 0:5fb7a5f9f20b | 5 | DigitalOut led(LED1); |
| bmol | 0:5fb7a5f9f20b | 6 | DigitalOut flash(LED4); |
| bmol | 0:5fb7a5f9f20b | 7 | |
| bmol | 0:5fb7a5f9f20b | 8 | void flip() { |
| bmol | 0:5fb7a5f9f20b | 9 | led = !led; // toggles the led when the joystick button is pressed. |
| bmol | 0:5fb7a5f9f20b | 10 | } |
| bmol | 0:5fb7a5f9f20b | 11 | int main() { |
| bmol | 0:5fb7a5f9f20b | 12 | joystickcenter.rise(&flip); // attach the function address to the rising edge |
| bmol | 0:5fb7a5f9f20b | 13 | button.mode(PullUp); // With this, no external pullup resistor needed |
| bmol | 0:5fb7a5f9f20b | 14 | button.rise(&flip); // attach the function address to the rising edge |
| bmol | 0:5fb7a5f9f20b | 15 | while(1) { // wait around, interrupts will interrupt this! |
| bmol | 0:5fb7a5f9f20b | 16 | flash = !flash; // turns LED4 on if off, off if on |
| bmol | 0:5fb7a5f9f20b | 17 | wait(0.25); // the instruction to wait for a quarter-second |
| bmol | 0:5fb7a5f9f20b | 18 | } |
| bmol | 0:5fb7a5f9f20b | 19 | } |
| bmol | 0:5fb7a5f9f20b | 20 | |
| bmol | 0:5fb7a5f9f20b | 21 | |
| bmol | 0:5fb7a5f9f20b | 22 |