/*
 * Dragonframe stereo slider example for Arduino.
 */

// output pin wired to stereo slider
#define STEREO_TRIGGER_PIN 7

// track the stereo position
char stereoPosition = 'L';

// Create global object to communicate with Dragonframe
DFRemote df_remote = DFRemote();

/*
 * Arduino calls this function once, at the start of your program.
 */
void setup()
{
  // set up serial port to 57600 kbps
  Serial.begin(57600);
  
  /*
   * Configure output pin for triggering stereo slider.
   */
  pinMode(STEREO_TRIGGER_PIN, OUTPUT);
  digitalWrite(STEREO_TRIGGER_PIN, LOW);
}

/**
 * Arduino calls this function repeatedly as the main program loop.
 */
void loop()
{
  // tell df to check for inputs and send messages to Dragonframe if needed
  df_remote.processPins();
  
  // read serial messages from Dragonframe
  int cmd = df_remote.processSerial();


  /**
   * Send pulse to stereo slider based on exposure name.
   * This example sets a digital I/O pin high for 0.5 seconds.
   */

  if (cmd == DF_POSITION_MSG)
  {
    if (df_remote.commandExposureName[0] != stereoPosition)
    {
      digitalWrite(STEREO_TRIGGER_PIN, HIGH);
      delay(500);
      digitalWrite(STEREO_TRIGGER_PIN, LOW);
      stereoPosition = df_remote.commandExposureName[0];
    }
  }

}