Bluetooth controlled camera shutter

/* 
  LightBlue Shutter - Sandbox 
  
  Shutter Pin Connections:
  FOCUS: 1
  RELEA: 0
*/
  
/*************************************************************************/
/* Defines */
/*************************************************************************/
#define FOCUS_TIME_MS    400 //change here if your camera needs a longer or
#define RELEA_TIME_MS    300 //a shorter time to focus or to release
  
/*************************************************************************/
/* Pin Defines */
/*************************************************************************/
// Shutter Controller
int FOCUS = 0; //Focus 
int RELEA = 1; //Release

/*************************************************************************/
/* Global Variables */
/*************************************************************************/
void setup(){
  Serial.begin(57600);  
  Serial.setTimeout(25);
  
  // Shutter Setup
  pinMode(FOCUS, OUTPUT);
  digitalWrite(FOCUS,LOW);
  pinMode(RELEA, OUTPUT);
  digitalWrite(RELEA,LOW);
 }
 
/*************************************************************************/
/* Main Loop */
/*************************************************************************/
void loop(){
  char buffer[10];
  size_t length = 2;
  
  
  buffer[0] = 0;
  length = Serial.readBytes(buffer, length); 
  
  if( length > 1 ){
        if( (buffer[0] == 13) && (buffer[1] == 0) ){
		      focus(); //focus
	      }
        if( (buffer[0] == 14) && (buffer[1] == 0) ){
		      relea(); //release
	      }
  } 
  Bean.sleep(0xFFFFFFFF); // Sleep until a serial message wakes us up
}

/*************************************************************************/
/* Focus function */
/*************************************************************************/
void focus(void){
   digitalWrite(FOCUS, HIGH); //focus
   Bean.setLed(255,0,0);      //turn on LED (red)
   delay(FOCUS_TIME_MS);
   digitalWrite(FOCUS, LOW); //focus stop
   Bean.setLed(0,0,0);       //turn off LED
  }
  
/*************************************************************************/
/* Release function */
/*************************************************************************/
void relea(void){
   digitalWrite(RELEA, HIGH); //release
   Bean.setLed(0,255,0);      //turn on LED (green)
   delay(RELEA_TIME_MS);
   digitalWrite(RELEA, LOW); //release stop
   Bean.setLed(0,0,0);       //turn off LED
  }
  
/*************************************************************************/