ST / Mbed 2 deprecated DISCO-L053C8_read_button

Basic example showing how to read a button with interrupt.

Dependencies:   mbed

main.cpp@1:a6ed173ce041, 2017-06-07 (annotated)

Committer:
arostm
Date:
Wed Jun 07 11:58:21 2017 +0000
Revision:
1:a6ed173ce041
Parent:
0:2faf62d5a08c 
Adding new mbed library

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bcostm 0:2faf62d5a08c 1 #include "mbed.h"
bcostm 0:2faf62d5a08c 2
bcostm 0:2faf62d5a08c 3 DigitalOut green_led(LED1);
bcostm 0:2faf62d5a08c 4 DigitalOut red_led(LED2);
bcostm 0:2faf62d5a08c 5
bcostm 0:2faf62d5a08c 6 InterruptIn user_button(USER_BUTTON);
bcostm 0:2faf62d5a08c 7
bcostm 0:2faf62d5a08c 8 void button_pressed()
bcostm 0:2faf62d5a08c 9 {
bcostm 0:2faf62d5a08c 10 green_led = 1;
bcostm 0:2faf62d5a08c 11 }
bcostm 0:2faf62d5a08c 12
bcostm 0:2faf62d5a08c 13 void button_released()
bcostm 0:2faf62d5a08c 14 {
bcostm 0:2faf62d5a08c 15 green_led = 0;
bcostm 0:2faf62d5a08c 16 }
bcostm 0:2faf62d5a08c 17
bcostm 0:2faf62d5a08c 18 int main() {
bcostm 0:2faf62d5a08c 19
bcostm 0:2faf62d5a08c 20 user_button.rise(&button_pressed);
bcostm 0:2faf62d5a08c 21 user_button.fall(&button_released);
bcostm 0:2faf62d5a08c 22
bcostm 0:2faf62d5a08c 23 while(1) {
bcostm 0:2faf62d5a08c 24 red_led = !red_led;
bcostm 0:2faf62d5a08c 25 wait(0.2);
bcostm 0:2faf62d5a08c 26 }
bcostm 0:2faf62d5a08c 27
bcostm 0:2faf62d5a08c 28 }