ST / Mbed 2 deprecated DISCO_L476VG_leds_buttons

Basic example showing how to drive the 2 LEDs and read state of Joystick button.

Dependencies:   mbed

main.cpp@1:29e159d631f5, 2017-06-06 (annotated)

Committer:
arostm
Date:
Tue Jun 06 14:41:33 2017 +0200
Revision:
1:29e159d631f5
Parent:
0:267836e77e0c 
Adding new mbed library

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bcostm 0:267836e77e0c 1 #include "mbed.h"
bcostm 0:267836e77e0c 2
bcostm 0:267836e77e0c 3 #define USE_PRINTF (1)
bcostm 0:267836e77e0c 4
bcostm 0:267836e77e0c 5 // Joystick button
bcostm 0:267836e77e0c 6 InterruptIn center(JOYSTICK_CENTER);
bcostm 0:267836e77e0c 7 InterruptIn left(JOYSTICK_LEFT);
bcostm 0:267836e77e0c 8 InterruptIn right(JOYSTICK_RIGHT);
bcostm 0:267836e77e0c 9 InterruptIn up(JOYSTICK_UP);
bcostm 0:267836e77e0c 10 InterruptIn down(JOYSTICK_DOWN);
bcostm 0:267836e77e0c 11
bcostm 0:267836e77e0c 12 // LEDs
bcostm 0:267836e77e0c 13 DigitalOut led_green(LED1);
bcostm 0:267836e77e0c 14 DigitalOut led_red(LED2);
bcostm 0:267836e77e0c 15
bcostm 0:267836e77e0c 16 void center_released() {
bcostm 0:267836e77e0c 17 led_green = 0;
bcostm 0:267836e77e0c 18 #if USE_PRINTF == 1
bcostm 0:267836e77e0c 19 printf("center button released\n");
bcostm 0:267836e77e0c 20 #endif
bcostm 0:267836e77e0c 21 }
bcostm 0:267836e77e0c 22
bcostm 0:267836e77e0c 23 void center_pressed() {
bcostm 0:267836e77e0c 24 led_green = 1;
bcostm 0:267836e77e0c 25 #if USE_PRINTF == 1
bcostm 0:267836e77e0c 26 printf("center button pressed\n");
bcostm 0:267836e77e0c 27 #endif
bcostm 0:267836e77e0c 28 }
bcostm 0:267836e77e0c 29
bcostm 0:267836e77e0c 30 void left_released() {
bcostm 0:267836e77e0c 31 led_green = 0;
bcostm 0:267836e77e0c 32 #if USE_PRINTF == 1
bcostm 0:267836e77e0c 33 printf("left button released\n");
bcostm 0:267836e77e0c 34 #endif
bcostm 0:267836e77e0c 35 }
bcostm 0:267836e77e0c 36
bcostm 0:267836e77e0c 37 void left_pressed() {
bcostm 0:267836e77e0c 38 led_green = 1;
bcostm 0:267836e77e0c 39 #if USE_PRINTF == 1
bcostm 0:267836e77e0c 40 printf("left button pressed\n");
bcostm 0:267836e77e0c 41 #endif
bcostm 0:267836e77e0c 42 }
bcostm 0:267836e77e0c 43
bcostm 0:267836e77e0c 44 void right_released() {
bcostm 0:267836e77e0c 45 led_green = 0;
bcostm 0:267836e77e0c 46 #if USE_PRINTF == 1
bcostm 0:267836e77e0c 47 printf("right button released\n");
bcostm 0:267836e77e0c 48 #endif
bcostm 0:267836e77e0c 49 }
bcostm 0:267836e77e0c 50
bcostm 0:267836e77e0c 51 void right_pressed() {
bcostm 0:267836e77e0c 52 led_green = 1;
bcostm 0:267836e77e0c 53 #if USE_PRINTF == 1
bcostm 0:267836e77e0c 54 printf("right button pressed\n");
bcostm 0:267836e77e0c 55 #endif
bcostm 0:267836e77e0c 56 }
bcostm 0:267836e77e0c 57
bcostm 0:267836e77e0c 58 void up_released() {
bcostm 0:267836e77e0c 59 led_green = 0;
bcostm 0:267836e77e0c 60 #if USE_PRINTF == 1
bcostm 0:267836e77e0c 61 printf("up button released\n");
bcostm 0:267836e77e0c 62 #endif
bcostm 0:267836e77e0c 63 }
bcostm 0:267836e77e0c 64
bcostm 0:267836e77e0c 65 void up_pressed() {
bcostm 0:267836e77e0c 66 led_green = 1;
bcostm 0:267836e77e0c 67 #if USE_PRINTF == 1
bcostm 0:267836e77e0c 68 printf("up button pressed\n");
bcostm 0:267836e77e0c 69 #endif
bcostm 0:267836e77e0c 70 }
bcostm 0:267836e77e0c 71
bcostm 0:267836e77e0c 72 void down_released() {
bcostm 0:267836e77e0c 73 led_green = 0;
bcostm 0:267836e77e0c 74 #if USE_PRINTF == 1
bcostm 0:267836e77e0c 75 printf("down button released\n");
bcostm 0:267836e77e0c 76 #endif
bcostm 0:267836e77e0c 77 }
bcostm 0:267836e77e0c 78
bcostm 0:267836e77e0c 79 void down_pressed() {
bcostm 0:267836e77e0c 80 led_green = 1;
bcostm 0:267836e77e0c 81 #if USE_PRINTF == 1
bcostm 0:267836e77e0c 82 printf("down button pressed\n");
bcostm 0:267836e77e0c 83 #endif
bcostm 0:267836e77e0c 84 }
bcostm 0:267836e77e0c 85
bcostm 0:267836e77e0c 86 int main() {
bcostm 0:267836e77e0c 87
bcostm 0:267836e77e0c 88 #if USE_PRINTF == 1
bcostm 0:267836e77e0c 89 int i = 0;
bcostm 0:267836e77e0c 90 printf("\nStart!\n");
bcostm 0:267836e77e0c 91 #endif
bcostm 0:267836e77e0c 92
bcostm 0:267836e77e0c 93 // Both rise and fall edges generate an interrupt
bcostm 0:267836e77e0c 94 center.fall(&center_released);
bcostm 0:267836e77e0c 95 center.rise(&center_pressed);
bcostm 0:267836e77e0c 96 left.fall(&left_released);
bcostm 0:267836e77e0c 97 left.rise(&left_pressed);
bcostm 0:267836e77e0c 98 right.fall(&right_released);
bcostm 0:267836e77e0c 99 right.rise(&right_pressed);
bcostm 0:267836e77e0c 100 up.fall(&up_released);
bcostm 0:267836e77e0c 101 up.rise(&up_pressed);
bcostm 0:267836e77e0c 102 down.fall(&down_released);
bcostm 0:267836e77e0c 103 down.rise(&down_pressed);
bcostm 0:267836e77e0c 104
bcostm 0:267836e77e0c 105 // Add pull-down on these pins
bcostm 0:267836e77e0c 106 // Warning: must be done AFTER edges setting
bcostm 0:267836e77e0c 107 left.mode(PullDown);
bcostm 0:267836e77e0c 108 right.mode(PullDown);
bcostm 0:267836e77e0c 109 up.mode(PullDown);
bcostm 0:267836e77e0c 110 down.mode(PullDown);
bcostm 0:267836e77e0c 111
bcostm 0:267836e77e0c 112 while (1) {
bcostm 0:267836e77e0c 113 led_red = !led_red;
bcostm 0:267836e77e0c 114 wait(1.0);
bcostm 0:267836e77e0c 115 #if USE_PRINTF == 1
bcostm 0:267836e77e0c 116 printf("main %d\n", i++);
bcostm 0:267836e77e0c 117 #endif
bcostm 0:267836e77e0c 118 }
bcostm 0:267836e77e0c 119 }