I know you all probably hate this kind of question but I've googled and tried and tried but I'm just getting nowhere. I've already bricked two pro micros with bad code so any help would be REALLY appreciated.
I got this code from an instructables. I built the project and it does work but I'm getting double triggers. Here's the project Instructables Project As far as I can tell the person who posted it has abandoned his account and there's no other way to contact him that I can see.
I know the tinest bit about coding, I've found several libraries that are supposed to help with debouncing but as much as I struggle to understand this code I can't make heads nor tails out of it. I'm trying to teach myself C but it's slow going...
I'm just looking for the easiest way to debounce this code. Possibly using this Library? I don't know... Any help would be really appreciated.
#include <Keyboard.h>
// Board Arduino Micro. Port Arduino Micro
// These are used as indices to other arrays
enum {
UP,
RIGHT,
DOWN,
LEFT,
A,
Z,
X,
S,
SELECT,
START,
// Number of keys
NUM_KEYS,
};
// Maps button index to digital pin
const int PINS[] = {
2, // UP
3, // RIGHT
4, // DOWN
5, // LEFT
14, // A
10, // Z
16, // X
15, // S
9, // SELECT
8, // START
};
// Maps button to keyboard key
const char KEYS[] = {
KEY_UP_ARROW, // UP
KEY_RIGHT_ARROW, // RIGHT
KEY_DOWN_ARROW, // DOWN
KEY_LEFT_ARROW, // LEFT
'a', // A
'z', // Z
'x', // X
's', // S
KEY_RETURN, // SELECT
' ', // START
};
// Store previous state of keys
bool STATES[NUM_KEYS];
// Left and right LED pins
#define LED0 7
#define LED1 6
// Initialize
void setup() {
Keyboard.begin();
for (int i = 0; i < NUM_KEYS; i++) {
pinMode(PINS[i], INPUT_PULLUP);
STATES[i] = digitalRead(PINS[i]);
}
pinMode(LED0, OUTPUT);
pinMode(LED1, OUTPUT);
}
// Main loop
void loop() {
bool state;
// Flash LEDs
const unsigned long t = millis();
digitalWrite(LED0, (t / 1000) % 2 == 0 ? HIGH : LOW);
digitalWrite(LED1, (t / 1000) % 2 == 0 ? LOW : HIGH);
// Process each key
for (int i = 0; i < NUM_KEYS; i++) {
state = digitalRead(PINS[i]);
if (STATES[i] != state) {
if (state == LOW) {
Keyboard.press(KEYS[i]);
} else {
Keyboard.release(KEYS[i]);
}
STATES[i] = state;
}
}
}
