81 lines
1.7 KiB
C++
81 lines
1.7 KiB
C++
/*@ file DDRunino.ino
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*
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* Simple Arduino sketch to run a DDR pad as a keyboard
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*
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* https://git.beesbuzz.biz/fluffy/DDRuino/
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*/
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#include <Keyboard.h>
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//! Uncomment this to enable the serial debugger to determine the pin mappings
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//#define DEBUG
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//! Debounce time in milliseconds
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constexpr int debounceTime = 10;
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//! Input button
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struct Input {
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int pin; //!< Input pin
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int keyCode; //!< Mapped key
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bool pressed; //!< Last read state
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unsigned long lastChange; //!< Last update time
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};
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/*! Map the input pins to a button on the pad; use debug mode to determine
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* your button layout if you're not sure
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*/
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Input mapping[] = {
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{ 4, KEY_RETURN },
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{ 5, KEY_ESC },
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{ 6, KEY_UP_ARROW },
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{ 7, KEY_DOWN_ARROW },
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{ 8, KEY_RIGHT_ARROW },
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{ 9, KEY_LEFT_ARROW },
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};
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void setup()
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{
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#ifdef DEBUG
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Serial.begin(9600);
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for (int i = 0; i < 12; i++) {
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pinMode(i, INPUT_PULLUP);
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}
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#endif
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unsigned long now = millis();
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for (auto i : mapping) {
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pinMode(i.pin, INPUT_PULLUP);
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i.pressed = false;
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i.lastChange = now;
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}
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Keyboard.begin();
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}
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void loop()
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{
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#ifdef DEBUG
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for (int i = 0; i < 12; i++) {
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Serial.print(!digitalRead(i) ? "0123456789abcdef"[i] : ' ');
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}
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Serial.print('\n');
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#endif
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unsigned long now = millis();
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for (auto& i : mapping) {
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bool val = !digitalRead(i.pin);
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if (val != i.pressed && (i.lastChange + debounceTime) < now) {
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if (val) {
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Keyboard.press(i.keyCode);
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} else {
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Keyboard.release(i.keyCode);
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}
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i.pressed = val;
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i.lastChange = now;
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}
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}
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}
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