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Author SHA1 Message Date
fluffy f0389b8536 Implement debounce 2021-05-10 01:38:33 -07:00
1 changed files with 24 additions and 12 deletions

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@ -7,15 +7,23 @@
#include <Keyboard.h>
// Uncomment this to enable the serial debugger to determine the pin mappings
//! Uncomment this to enable the serial debugger to determine the pin mappings
//#define DEBUG
//! Debounce time in milliseconds
constexpr int debounceTime = 20;
//! Input button
struct Input {
int pin;
int keyCode;
bool state;
int pin; //!< Input pin
int keyCode; //!< Mapped key
bool pressed; //!< Last read state
unsigned long lastChange; //!< Last update time
};
/*! Map the input pins to a button on the pad; use debug mode to determine
* your button layout if you're not sure
*/
Input mapping[] = {
{ 4, KEY_RETURN },
{ 5, KEY_ESC },
@ -27,17 +35,20 @@ Input mapping[] = {
void setup()
{
#ifdef DEBUG
Serial.begin(9600);
#ifdef DEBUG
for (int i = 0; i < 12; i++) {
pinMode(i, INPUT_PULLUP);
}
#endif
unsigned long now = millis();
for (auto i : mapping) {
pinMode(i.pin, INPUT_PULLUP);
i.state = HIGH;
i.pressed = false;
i.lastChange = now;
}
Keyboard.begin();
@ -53,16 +64,17 @@ void loop()
#endif
for (auto& i : mapping) {
unsigned long now = millis();
bool val = !digitalRead(i.pin);
if (val != i.state) {
if (val != i.pressed && (i.lastChange + debounceTime) < now) {
if (val) {
// TODO debounce
Keyboard.press(i.keyCode);
} else {
Keyboard.release(i.keyCode);
}
i.state = val;
i.pressed = val;
i.lastChange = now;
}
}
}