Elektronikk Høst 15 / Mbed 2 deprecated Debounce

Et eksempel på Debounce av en knapp ved hjelp av interrupts

Dependencies:   mbed

main.cpp@0:95812c6efbce, 2015-11-05 (annotated)

Committer:
benrammok
Date:
Thu Nov 05 13:14:36 2015 +0000
Revision:
0:95812c6efbce
Debounce Program

Who changed what in which revision?

UserRevisionLine numberNew contents of line
benrammok 0:95812c6efbce 1 #include "mbed.h"
benrammok 0:95812c6efbce 2
benrammok 0:95812c6efbce 3 //Definerer inn/utganger
benrammok 0:95812c6efbce 4 DigitalOut led(LED1);
benrammok 0:95812c6efbce 5 InterruptIn button(USER_BUTTON);
benrammok 0:95812c6efbce 6 Timeout tOut;
benrammok 0:95812c6efbce 7
benrammok 0:95812c6efbce 8
benrammok 0:95812c6efbce 9 //Funksjonsprototyper
benrammok 0:95812c6efbce 10 void btnClick(void);
benrammok 0:95812c6efbce 11 void enableIRQ(void);
benrammok 0:95812c6efbce 12 void toggleLed(void);
benrammok 0:95812c6efbce 13
benrammok 0:95812c6efbce 14
benrammok 0:95812c6efbce 15 int main() {
benrammok 0:95812c6efbce 16 //Setter pull-up og fester en funksjon til fall på button.
benrammok 0:95812c6efbce 17 button.mode(PullUp);
benrammok 0:95812c6efbce 18 button.fall(&btnClick);
benrammok 0:95812c6efbce 19
benrammok 0:95812c6efbce 20
benrammok 0:95812c6efbce 21
benrammok 0:95812c6efbce 22 while(1) {
benrammok 0:95812c6efbce 23
benrammok 0:95812c6efbce 24 wait(0.2); // 200 ms
benrammok 0:95812c6efbce 25 }
benrammok 0:95812c6efbce 26 }
benrammok 0:95812c6efbce 27
benrammok 0:95812c6efbce 28 //Toggler Led fra av/på -> på/av
benrammok 0:95812c6efbce 29 void toggleLed(){
benrammok 0:95812c6efbce 30 led = !led; //Toggler LED
benrammok 0:95812c6efbce 31 }
benrammok 0:95812c6efbce 32
benrammok 0:95812c6efbce 33
benrammok 0:95812c6efbce 34 //Skrur på interrupts
benrammok 0:95812c6efbce 35 void enableIRQ(){
benrammok 0:95812c6efbce 36 button.enable_irq();
benrammok 0:95812c6efbce 37 }
benrammok 0:95812c6efbce 38
benrammok 0:95812c6efbce 39
benrammok 0:95812c6efbce 40 //Kjører når knappen blir trykket
benrammok 0:95812c6efbce 41 void btnClick(){
benrammok 0:95812c6efbce 42 button.disable_irq();
benrammok 0:95812c6efbce 43 tOut.attach_us(enableIRQ, 10);
benrammok 0:95812c6efbce 44 toggleLed();
benrammok 0:95812c6efbce 45 }