joystick_rev0

/* Arduino USB Keyboard HID demo
 * Volume+/Volume-/Mute keys
 */

uint8_t buf[8] = {
  0 };   /* Keyboard report buffer */

#define PIN_B 0
#define PIN_A 1
#define PIN_RB 2
#define PIN_LB 4
#define PIN_Y 5
#define PIN_X 6
#define PIN_LEFT 8
#define PIN_DOWN 9
#define PIN_RIGHT 11
#define PIN_UP 12

int state = 1;

void setup()
{
  Serial.begin(9600);
  pinMode(PIN_B, INPUT);
  pinMode(PIN_A, INPUT);
  pinMode(PIN_RB, INPUT);
  pinMode(PIN_LB, INPUT);
  pinMode(PIN_Y, INPUT);
  pinMode(PIN_X, INPUT);
  pinMode(PIN_LEFT, INPUT);
  pinMode(PIN_DOWN, INPUT);
  pinMode(PIN_RIGHT, INPUT);
  pinMode(PIN_UP, INPUT);
  // enable internal pull-ups
  digitalWrite(PIN_B, 1);
  digitalWrite(PIN_A, 1);
  digitalWrite(PIN_RB, 1);
  digitalWrite(PIN_LB, 1);
  digitalWrite(PIN_Y, 1);
  digitalWrite(PIN_X, 1);
  digitalWrite(PIN_LEFT, 1);
  digitalWrite(PIN_DOWN, 1);
  digitalWrite(PIN_RIGHT, 1);
  digitalWrite(PIN_UP, 1);

  delay(200);
}

void loop()
{
  state = digitalRead(PIN_B);
  if (state != 1) {
    buf[2] = 13;   // Volume up key
    Serial.write(buf, 8); // Send keypress
    releaseKey();
  }

  state = digitalRead(PIN_A);
  if (state != 1) {
    buf[2] = 14;   // Volume down key
    Serial.write(buf, 8); // Send keypress
    releaseKey();
  }

  state = digitalRead(PIN_RB);
  if (state != 1) {
    buf[2] = 15;   // Mute key
    Serial.write(buf, 8); // Send keypress
    releaseKey();
  }
  state = digitalRead(PIN_LB);
  if (state != 1) {
    buf[2] = 18;   // Volume up key
    Serial.write(buf, 8); // Send keypress
    releaseKey();
  }

  state = digitalRead(PIN_Y);
  if (state != 1) {
    buf[2] = 128;   // Volume down key
    Serial.write(buf, 8); // Send keypress
    releaseKey();
  }

  state = digitalRead(PIN_X);
  if (state != 1) {
    buf[2] = 12;   // Mute key
    Serial.write(buf, 8); // Send keypress
    releaseKey();
  }
  state = digitalRead(PIN_LEFT);
  if (state != 1) {
    buf[2] = 4;   // Volume up key
    Serial.write(buf, 8); // Send keypress
    releaseKey();
  }

  state = digitalRead(PIN_DOWN);
  if (state != 1) {
    buf[2] = 22;   // Volume down key
    Serial.write(buf, 8); // Send keypress
    releaseKey();
  }

  state = digitalRead(PIN_RIGHT);
  if (state != 1) {
    buf[2] = 7;   // Mute key
    Serial.write(buf, 8); // Send keypress
    releaseKey();
  }
  state = digitalRead(PIN_UP);
  if (state != 1) {
    buf[2] = 26;   // Volume up key
    Serial.write(buf, 8); // Send keypress
    releaseKey();
  }

}

void releaseKey()
{
  buf[0] = 0;
  buf[2] = 0;
  Serial.write(buf, 8); // Release key
}