TDA7439/TDA7439.cpp at master · AussieMakerGeek/TDA7439 · GitHub

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#include <Arduino.h>
#include <Wire.h>
#include "TDA7439.h"

TDA7439::TDA7439(){
	Wire.begin();
}

void TDA7439::setInput(uint8_t input){
  switch (input) {
    case 1: input = TDA7439_input_1;break;
	case 2: input = TDA7439_input_2;break;
	case 3: input = TDA7439_input_3;break;
	case 4: input = TDA7439_input_4;break;
  }
  writeWire(TDA7439_input_sel,input);
  }

void TDA7439::inputGain(uint8_t gain){
  writeWire(TDA7439_input_gain,gain);
}

void TDA7439::setVolume(uint8_t volume){
  if (volume == 0){
    volume = TDA7439_mute;
	}else{
	  volume = 48 - volume;
  }
  writeWire(TDA7439_volume,volume);
}

void TDA7439::setSnd(int8_t val, uint8_t range){
  switch (range){
    case 1:range = TDA7439_bass;break;
	case 2:range = TDA7439_middle;break;
	case 3:range = TDA7439_trebble;break;
  }
  switch (val){
    case -7:val = 0;break;
	case -6:val = 1;break;
	case -5:val = 2;break;
	case -4:val = 3;break;
	case -3:val = 4;break;
	case -2:val = 5;break;
	case -1:val = 6;break;
	case 0 :val = 7;break;
	case 1 :val = 14;break;
	case 2 :val = 13;break;
	case 3 :val = 12;break;
	case 4 :val = 11;break;
	case 5 :val = 10;break;
	case 6 :val = 9;break;
	case 7 :val = 8;break;
  }

writeWire(range,val);
}

void TDA7439::mute(){
  writeWire(TDA7439_volume,TDA7439_mute);
}

void TDA7439::spkAtt(uint8_t att){
  // Mainly used to override the default attenuation of mute at power up
  // can be used for balance with some simple code changes here.
  writeWire(TDA7439_ratt,att);
  writeWire(TDA7439_latt,att);
}

void TDA7439::writeWire(char a, char b){
  Wire.beginTransmission(TDA7439_address);
  Wire.write (a);
  Wire.write (b);
  Wire.endTransmission();
}