#include <Wire.h>
#include <avr/sleep.h>
int num=0;

void setup()
{
  
  Wire.begin();
  
  pinMode(A3, OUTPUT);
  digitalWrite(A3, HIGH);

  pinMode(3,OUTPUT); //debug to led 3


//power amp setup
Wire.beginTransmission(0xE0); //write enable register

    if(Wire.available()) {
        num = 1;
       
      }
     
  
  Wire.write(0x02);  // register address 0X02
  if(Wire.available()) {
        num = 1;
       
  }
  Wire.write(0x0C);  // SWS '0', HPL and HPR enabled, class D disable
  if(Wire.available()) {
        num = 1;
   
  }
 Wire.endTransmission();
  delay(100);

Wire.beginTransmission(0xE0); //write enable register
    if(Wire.available()) {
        num = 1;

  }
  
  Wire.write(0x03);  // register address was 0X03
  if(Wire.available()) {
        num = 1;

  }
  Wire.write(0x81);  // LIM_LOCK enable, mode 001, I want this at the heaphones 
  if(Wire.available()) {
        num = 1;

  }
 Wire.endTransmission();
  delay(100);

Wire.beginTransmission(0xE0);
    if(Wire.available()) {
        num = 1;

  }
  
  Wire.write(0x05);  // register address was 0X05
  if(Wire.available()) {
        num = 1;

  }
  Wire.write(0x13);  // volume
        num = 1;

  }
 Wire.endTransmission();
  delay(100);

Wire.beginTransmission(0xE0);
    if(Wire.available()) {
        num = 1;

  }
  
  Wire.write(0x06);  // register address was 0X06
  if(Wire.available()) {
        num = 1;

  }
  Wire.write(0x13);  // volume data
  if(Wire.available()) {
        num = 1;

  }
 Wire.endTransmission();
  delay(100);


  Wire.beginTransmission(0xE0);
    if(Wire.available()) {
        num = 1;

  }
  
  Wire.write(0x07);  // register address was 0X07
  if(Wire.available()) {
        num = 1;
  }
  Wire.write(0x12);  // HP voltage and gain
  if(Wire.available()) { 
        num = 1;

  }
 Wire.endTransmission();

  delay(100);
  
}


void loop()
{

if(num ==1){
digitalWrite(3,HIGH);
}  

}