// Александр Лиман
// liman324@yandex.ru
// rcl-radio.ru
// BD3702FV
// http://forum.rcl-radio.ru/viewtopic.php?id=121

#ifndef BD3702_H
#define BD3702_H

#define BD3702_address 0b1000000 

#define INITIAL_SETUP_1        0x01
#define INITIAL_SETUP_2        0x02
#define INITIAL_SETUP_3        0x03
#define INPUT_SELECT           0x05
#define INPUT_GAIN             0x06
#define VOLUME_GAIN            0x20
#define FADER_1_FRONT          0x28
#define FADER_2_FRONT          0x29
#define FADER_1_REAR           0x2A
#define FADER_2_REAR           0x2B
#define FADER_SUB              0x2C
#define MIXING                 0x30
#define BASS_SETUP             0x41
#define MIDDLE_SETUP           0x44
#define TREBLE_SETUP           0x47
#define BASS_GAIN              0x51
#define MIDDLE_GAIN            0x54
#define TREBLE_GAIN            0x57
#define LOUDNESS_GAIN          0x75
#define INITIAL_SETUP_4        0x90

#include <Arduino.h>
class BD3702
{
  public:
    BD3702();
    // Advanced switch time of Mute === 0.6 1.0 1.4 3.2 ms = int 0...3
    // Advanced switch time of Input gain/Volume/Tone/Fader/Loudness === 4.7 7.1 11.2 14.4 ms = int 0...3
    // Advanced switch ON/OFF === OFF ON = int 0...1    
    void setInitial_1(int sw1, int sw2, int sw3); // 0x01
    // Subwoofer LPF fc === OFF 55Hz 85 Hz 120Hz = int 0...3
    // Subwoofer Output Select === LPF Front Rear Prohibition = int 0...3
    // Level Meter RESET === HOLD RESET = int 0...1
        void setInitial_2(int sub_f, int sub_out, int l_metr); // 0x02    
    // Loudness fo === 250Hz 400Hz 800Hz Prohibition = int 0...3
        void setInitial_3(int loud_f); // 0x03
    // Input Selector === A B C D_single E1_single E2_single D_diff E_full_diff Input_SHORT = int 0...8 
        void setIn(int in, int in_type); // 0x05
    // Input Gain === 0...20 dB = int 0...20
    // MUTE ON/OFF === OFF ON = int 0...1    
        void setIn_gain(int in_gain, int mute); // 0x06
    // VOL === -79...+15 dB = int -79...15
        void setVol(int vol); // 0x20
    // FADER FRONT 1CH === -79...+15 dB = int -79...15
        void setFront_1(int front_1); // 0x28
    // FADER FRONT 2CH === -79...+15 dB = int -79...15
        void setFront_2(int front_2); // 0x29
    // FADER REAR 1CH === -79...+15 dB = int -79...15
        void setRear_1(int rear_1); // 0x2A
    // FADER REAR 2CH === -79...+15 dB = int -79...15
        void setRear_2(int rear_2); // 0x2B
    // FADER SUB === -79...+15 dB = int -79...15
        void setSub(int sub); // 0x2C
    // Mixing Gain === -79...+7 dB = int -79...7
        void setMix_gain(int mix_g); // 0x30
    // Bass Q factor === 0.5 1.0 1.5 2.0 = int 0...3
    // Bass fo === 60Hz 80Hz 100Hz 120Hz = int 0...3
        void setBass_setup(int bass_q, int bass_f); // 0x41
    // Middle Q factor === 0.75 1.0 1.25 1.5 = int 0...3
    // Middle fo === 500Hz 1kHz 1.5kHz 2.5kHz = int 0...3
        void setMiddle_setup(int mid_q, int mid_f); // 0x44
    // Treble Q factor === 0.75 1.25 = int 0...1
    // Treble fo === 7.5kHz 10kHz 12.5kHz 15kHz = int 0...3
        void setTreble_setup(int treb_q, int treb_f); // 0x47
    // Bass Gain === -20...+20 dB = int -20...20
        void setBass_gain(int bass_gain); // 0x51
    // Middle Gain === -20...+20 dB = int -20...20
        void setMiddle_gain(int mid_gain); // 0x54
    // Treble Gain === -20...+20 dB = int -20...20
        void setTreble_gain(int treb_gain); // 0x57
    // Loudness Gain === 0...20 dB = int 0...20
        void setLoudness_gain(int loud_gain); // 0x75
    // Setup 4 = not param
        void setInitial_4();

  private:
    void writeWire(char a, char b);
};
    
#endif //BD3702_H

#include <Arduino.h>
#include <Wire.h>
#include "BD3702.h"

BD3702::BD3702(){
    Wire.begin();
}

void BD3702::setInitial_1(int sw1, int sw2, int sw3){
           switch(sw1){
              case 0: sw1 = 0b00000000;break;
              case 1: sw1 = 0b00000001;break;
              case 2: sw1 = 0b00000010;break;
              case 3: sw1 = 0b00000011;break;
}
           switch(sw2){
              case 0: sw2 = 0b00000000;break;
              case 1: sw2 = 0b00010000;break;
              case 2: sw2 = 0b00100000;break;
              case 3: sw2 = 0b00110000;break;
}
           switch(sw3){
              case 0: sw3 = 0b00000000;break;
              case 1: sw3 = 0b10000000;break;
}
           writeWire(INITIAL_SETUP_1, 0b01000100 + sw1 + sw2 + sw3); 
}


void BD3702::setInitial_2(int sub_f, int sub_out, int l_metr){
           switch(sub_f){
              case 0: sub_f = 0b00000000;break;
              case 1: sub_f = 0b00000001;break;
              case 2: sub_f = 0b00000010;break;
              case 3: sub_f = 0b00000011;break;
}
           switch(sub_out){
              case 0: sub_out = 0b00000000;break;
              case 1: sub_out = 0b00010000;break;
              case 2: sub_out = 0b00100000;break;
              case 3: sub_out = 0b00110000;break;
}
          switch(l_metr){
              case 0: l_metr = 0b00000000;break;
              case 1: l_metr = 0b01000000;break;
}
           writeWire(INITIAL_SETUP_2, sub_f + sub_out + l_metr);
}


void BD3702::setInitial_3(int loud_f){
            switch(loud_f){
              case 0: loud_f = 0b00000001;break;
              case 1: loud_f = 0b00001001;break;
              case 2: loud_f = 0b00010001;break;
              case 3: loud_f = 0b00011001;break;
}                 
           writeWire(INITIAL_SETUP_3, loud_f);
}


void BD3702::setIn(int in, int in_type){
           switch(in){
             case 0: in = 0b00000000;break;  
             case 1: in = 0b00000001;break; 
             case 2: in = 0b00000010;break; 
             case 3: in = 0b00000011;break;
             case 4: in = 0b00001010;break;
             case 5: in = 0b00001011;break; 
             case 6: in = 0b00000110;break;
             case 7: in = 0b00001000;break;    
             case 8: in = 0b00001001;break;
}  
          switch(in_type){
             case 0: in_type = 0b00000000;break;
             case 1: in_type = 0b10000000;break;
} 
             writeWire(INPUT_SELECT, in + in_type); 
}


void BD3702::setIn_gain(int in_gain, int mute){
            switch(mute){
               case 0: mute = 0b00000000;break;
               case 1: mute = 0b10000000;break;
   }
            writeWire(INPUT_GAIN, in_gain + mute); 
   }


void BD3702::setVol(int vol){
            if(vol > 0){vol = 128 - vol;}
            if(vol <= 0){vol = abs(vol) + 128;}
            writeWire(VOLUME_GAIN, vol); 
}


void BD3702::setFront_1(int front_1){
            if(front_1 > 0){front_1 = 128 - front_1;}
            if(front_1 <= 0){front_1 = abs(front_1) + 128;}
            writeWire(FADER_1_FRONT, front_1); 
}

void BD3702::setFront_2(int front_2){
            if(front_2 > 0){front_2 = 128 - front_2;}
            if(front_2 <= 0){front_2 = abs(front_2) + 128;}         
            writeWire(FADER_2_FRONT, front_2); 
}


void BD3702::setRear_1(int rear_1){
            if(rear_1 > 0){rear_1 = 128 - rear_1;}
            if(rear_1 <= 0){rear_1 = abs(rear_1) + 128;}
            writeWire(FADER_1_REAR, rear_1); 
}

void BD3702::setRear_2(int rear_2){
            if(rear_2 > 0){rear_2 = 128 - rear_2;}
            if(rear_2 <= 0){rear_2 = abs(rear_2) + 128;}
            writeWire(FADER_2_REAR, rear_2); 
}

void BD3702::setSub(int sub){ 
            if(sub > 0){sub = 128 - sub;}
            if(sub <= 0){sub = abs(sub) + 128;}
            writeWire(FADER_SUB, sub); 
}


void BD3702::setMix_gain(int mix_g){
            if(mix_g > 0){mix_g = 128 - mix_g;}
            if(mix_g <= 0){mix_g = abs(mix_g) + 128;}
            writeWire(MIXING, mix_g); 
}


void BD3702::setBass_setup(int bass_q, int bass_f){
            switch(bass_q){
               case 0: bass_q = 0b00000000;break;
               case 1: bass_q = 0b00000001;break;
               case 2: bass_q = 0b00000010;break;
               case 3: bass_q = 0b00000011;break;  
}
            switch(bass_f){
               case 0: bass_f = 0b00000000;break;
               case 1: bass_f = 0b00010000;break;
               case 2: bass_f = 0b00100000;break;
               case 3: bass_f = 0b00110000;break;  
}
            writeWire(BASS_SETUP, bass_q + bass_f); 
}


void BD3702::setMiddle_setup(int mid_q, int mid_f){
            switch(mid_q){
               case 0: mid_q = 0b00000000;break;
               case 1: mid_q = 0b00000001;break;
               case 2: mid_q = 0b00000010;break;
               case 3: mid_q = 0b00000011;break;  
}
            switch(mid_f){
               case 0: mid_f = 0b00000000;break;
               case 1: mid_f = 0b00010000;break;
               case 2: mid_f = 0b00100000;break;
               case 3: mid_f = 0b00110000;break;  
}
            writeWire(MIDDLE_SETUP, mid_q + mid_f); 
}


void BD3702::setTreble_setup(int treb_q, int treb_f){
            switch(treb_q){
               case 0: treb_q = 0b00000000;break;
               case 1: treb_q = 0b00000001;break; 
}
            switch(treb_f){
               case 0: treb_f = 0b00000000;break;
               case 1: treb_f = 0b00010000;break;
               case 2: treb_f = 0b00100000;break;
               case 3: treb_f = 0b00110000;break;  
}
            writeWire(TREBLE_SETUP, treb_q + treb_f); 
}


void BD3702::setBass_gain(int bass_gain){
                 if(bass_gain>0){bass_gain = bass_gain + 0b00000000;}                     
                 if(bass_gain<=0){bass_gain = abs(bass_gain) + 0b10000000;}  
               writeWire(BASS_GAIN, bass_gain);   
}

void BD3702::setMiddle_gain(int mid_gain){
                 if(mid_gain>0){mid_gain = mid_gain + 0b00000000;}                     
                 if(mid_gain<=0){mid_gain = abs(mid_gain) + 0b10000000;}  
               writeWire(MIDDLE_GAIN, mid_gain);   
}

void BD3702::setTreble_gain(int treb_gain){
                 if(treb_gain>0){treb_gain = treb_gain + 0b00000000;}                     
                 if(treb_gain<=0){treb_gain = abs(treb_gain) + 0b10000000;}  
               writeWire(TREBLE_GAIN, treb_gain);   
}


void BD3702::setLoudness_gain(int loud_gain){
               writeWire(LOUDNESS_GAIN, loud_gain);  
}

void BD3702::setInitial_4(){
           writeWire(INITIAL_SETUP_4, 0b00110000);  
}

void BD3702::writeWire(char a, char b){
  Wire.beginTransmission(BD3702_address);
  Wire.write (a);
  Wire.write (b);
  Wire.endTransmission();
}

#include <BD3702.h>
  BD3702 bd;

void setup() {
  audio();
}

void loop() {}

void audio(){
    // Advanced switch time of Mute === 0.6 1.0 1.4 3.2 ms = int 0...3
    // Advanced switch time of Input gain/Volume/Tone/Fader/Loudness === 4.7 7.1 11.2 14.4 ms = int 0...3
    // Advanced switch ON/OFF === OFF ON = int 0...1    
  bd.setInitial_1(0, 0, 0); // 0x01
    // Subwoofer LPF fc === OFF 55Hz 85 Hz 120Hz = int 0...3
    // Subwoofer Output Select === LPF Front Rear Prohibition = int 0...3
    // Level Meter RESET === HOLD RESET = int 0...1
  bd.setInitial_2(0, 0, 0); // 0x02  
    // Loudness fo === 250Hz 400Hz 800Hz Prohibition = int 0...3
  bd.setInitial_3(0); // 0x03
    // Input Selector === A B C D_single E1_single E2_single D_diff E_full_diff Input_SHORT = int 0...8 
  bd.setIn(0, 0); // 0x05
    // Input Gain === 0...20 dB = int 0...20
    // MUTE ON/OFF === OFF ON = int 0...1    
  bd.setIn_gain(0, 0); // 0x06
    // VOL === -79...+15 dB = int -79...15
  bd.setVol(0); // 0x20
    // FADER FRONT 1CH === -79...+15 dB = int -79...15
  bd.setFront_1(0); // 0x28
    // FADER FRONT 2CH === -79...+15 dB = int -79...15
  bd.setFront_2(0); // 0x29
    // FADER REAR 1CH === -79...+15 dB = int -79...15
  bd.setRear_1(0); // 0x2A
    // FADER REAR 2CH === -79...+15 dB = int -79...15
  bd.setRear_2(0); // 0x2B
    // FADER SUB === -79...+15 dB = int -79...15
  bd.setSub(0); // 0x2C
    // Mixing Gain === -79...+7 dB = int -79...7
  bd.setMix_gain(0); // 0x30
    // Bass Q factor === 0.5 1.0 1.5 2.0 = int 0...3
    // Bass fo === 60Hz 80Hz 100Hz 120Hz = int 0...3
  bd.setBass_setup(0, 0); // 0x41
    // Middle Q factor === 0.75 1.0 1.25 1.5 = int 0...3
    // Middle fo === 500Hz 1kHz 1.5kHz 2.5kHz = int 0...3
  bd.setMiddle_setup(0, 0); // 0x44
    // Treble Q factor === 0.75 1.25 = int 0...1
    // Treble fo === 7.5kHz 10kHz 12.5kHz 15kHz = int 0...3
  bd.setTreble_setup(0, 0); // 0x47
    // Bass Gain === -20...+20 dB = int -20...20
  bd.setBass_gain(0); // 0x51
    // Middle Gain === -20...+20 dB = int -20...20
  bd.setMiddle_gain(0); // 0x54
    // Treble Gain === -20...+20 dB = int -20...20
  bd.setTreble_gain(0); // 0x57
    // Loudness Gain === 0...20 dB = int 0...20
  bd.setLoudness_gain(0); // 0x75
    // Setup 4 = not param
  bd.setInitial_4();
  }