Val Glynn / Mbed 2 deprecated 2_3_1_Debouncing

CA 2.3.1 Debouncing

Dependencies:   mbed C12832

main.cpp@0:c85a8aa92f33, 2020-07-26 (annotated)

Committer:
vmg
Date:
Sun Jul 26 20:54:08 2020 +0000
Revision:
0:c85a8aa92f33
CA 2.3.1 Debouncing

Who changed what in which revision?

UserRevisionLine numberNew contents of line
vmg 0:c85a8aa92f33 1 #include "mbed.h"
vmg 0:c85a8aa92f33 2 #include "C12832.h"
vmg 0:c85a8aa92f33 3 C12832 lcd(p5,p7,p6,p8,p11);
vmg 0:c85a8aa92f33 4 InterruptIn joystickcenter(p14);
vmg 0:c85a8aa92f33 5 InterruptIn button(p9);
vmg 0:c85a8aa92f33 6 DigitalOut led(LED1);
vmg 0:c85a8aa92f33 7 DigitalOut flash(LED4);
vmg 0:c85a8aa92f33 8 Timer debounce;
vmg 0:c85a8aa92f33 9 int x;
vmg 0:c85a8aa92f33 10
vmg 0:c85a8aa92f33 11 void flip(){
vmg 0:c85a8aa92f33 12 debounce.start();
vmg 0:c85a8aa92f33 13 if (debounce.read_ms()>1000)
vmg 0:c85a8aa92f33 14 debounce.reset();
vmg 0:c85a8aa92f33 15 led = !led; // toggles the led when the joystick button is pressed.
vmg 0:c85a8aa92f33 16 x=1;
vmg 0:c85a8aa92f33 17 }
vmg 0:c85a8aa92f33 18 int main(){
vmg 0:c85a8aa92f33 19 joystickcenter.rise(&flip); // attach the function address to the rising edge
vmg 0:c85a8aa92f33 20 button.mode(PullUp); // With this, no external pullup resistor needed
vmg 0:c85a8aa92f33 21 button.rise(&flip); // attach the function address to the rising edge
vmg 0:c85a8aa92f33 22 while(1) { // wait around, interrupts will interrupt this!
vmg 0:c85a8aa92f33 23 if(x==1) {
vmg 0:c85a8aa92f33 24 lcd.locate(0,0);
vmg 0:c85a8aa92f33 25 lcd.printf("Variable has been SET!");
vmg 0:c85a8aa92f33 26 flash = !flash; // turns LED4 on if off, off if on
vmg 0:c85a8aa92f33 27 x=0;
vmg 0:c85a8aa92f33 28 wait(0.25); // the instruction to wait for a quarter-second
vmg 0:c85a8aa92f33 29 }
vmg 0:c85a8aa92f33 30 }
vmg 0:c85a8aa92f33 31 }
vmg 0:c85a8aa92f33 32