foot_pedal.ino

/*
 * pedal controller for Ctrl, Space and Shift
 */

#include <Bounce.h>

// 10 = debounce time in ms
int debounceTimeMs = 10;
int ledPin = 11;
int spacePedalPin = 3;
int ctrlPedalPin = 2;
int shiftPedalPin = 1;

Bounce spaceBtn = Bounce(spacePedalPin, 10);
Bounce ctrlBtn = Bounce(ctrlPedalPin, 10);
Bounce shiftBtn = Bounce(shiftPedalPin, 10);

void setup() {
  Serial.begin(9600);
  pinMode(spacePedalPin, INPUT_PULLUP);
  pinMode(ctrlPedalPin, INPUT_PULLUP);
  pinMode(shiftPedalPin, INPUT_PULLUP);
  pinMode(ledPin, OUTPUT);
  Serial.println("Setup done");
  Keyboard.begin();
  
  delay(1000);
  Serial.println("All set");
}

void loop() {
  spaceBtn.update();
  ctrlBtn.update();
  shiftBtn.update();  
  
  if (spaceBtn.fallingEdge()) {
    Keyboard.press(' ');
    digitalWrite(ledPin, HIGH);
  } else if (spaceBtn.risingEdge()) {
    
    // 20131116, AA: comment do mattGauger antigo
    // leave insert
    // We have to build Ctrl-[ to leave insert since
    // the ESC key does not seem to be detected on OSX.
    // Keyboard.press(KEY_LEFT_CTRL);
    // Keyboard.press('[');
    
    // Keyboard.releaseAll();
    Keyboard.release(' ');
    digitalWrite(ledPin, LOW);
  }
  
  // KEY_LEFT_CTRL
  if (ctrlBtn.fallingEdge()) {
    Keyboard.press(KEY_LEFT_CTRL);
    digitalWrite(ledPin, HIGH);
  } else if (ctrlBtn.risingEdge()) {
    // Keyboard.releaseAll();
    Keyboard.release(KEY_LEFT_CTRL);
    digitalWrite(ledPin, LOW);
  }
  
  // KEY_LEFT_SHIFT
  if (shiftBtn.fallingEdge()) {
    Keyboard.press(KEY_LEFT_SHIFT);
    digitalWrite(ledPin, HIGH);
  } else if (shiftBtn.risingEdge()) {
    Keyboard.release(KEY_LEFT_SHIFT);
    digitalWrite(ledPin, LOW);
  }
}