#define IR2   0xFF2FD0 // button encoder
#define IR3   0xFFAF50 // mute
#define IR4   0xFF8F70 // >>>
#define IR5   0xFF4FB0 // <<<
#define IR6   0xFFCF30 // INPUT 
#define POWER 0xFF0FF0 // STANDBY

#include <LC75341.h>           // http://rcl-radio.ru/wp-content/uploads/ … c75341.zip
#include <Wire.h>
#include <MsTimer2.h>          // http://rcl-radio.ru/wp-content/uploads/ … Timer2.zip
#include <U8glib.h>            // https://github.com/olikraus/u8glib/
#include <Encoder.h>           // http://rcl-radio.ru/wp-content/uploads/ … ncoder.zip
#include <EEPROM.h>
#include <boarddefs.h>         // входит в состав библиотеки IRremote
#include <IRremote.h>          // http://rcl-radio.ru/wp-content/uploads/ … remote.zip

Encoder myEnc(5, 6);// DT, CLK(8, 9)
U8GLIB_SH1106_128X64 u8g(U8G_I2C_OPT_DEV_0|U8G_I2C_OPT_FAST);  // Dev 0, Fast I2C / TWI
LC75341 lc(3,4,2);   // CE,DI,CL
IRrecv irrecv(12); // указываем вывод модуля IR приемника
decode_results ir;


long times,oldPosition  = -999,newPosition, times1, times2;
int vol_reg,menu,mute_reg,power,treb_reg,gain0,gain1,gain2,gain3,gain4,gain5,bass_reg,in_reg,ball,vol_old;
bool w,w2,gr1,gr2,www,oled_off,w_power;

void setup(){
  Wire.begin();
  irrecv.enableIRIn();
  Serial.begin(9600);
  MsTimer2::set(1, to_Timer);MsTimer2::start();
  pinMode(7,INPUT);        // encoder SW
  pinMode(10,INPUT_PULLUP);  // mute button
  pinMode(11,INPUT_PULLUP); // input button
  pinMode(8,OUTPUT);        // OUT STBY
  pinMode(9,INPUT_PULLUP);  // POWER BUTTON
  pinMode(13,OUTPUT);   // тут сразу пропадает напряжение при ВЫКЛ и появляется с задержкой при ВКЛ
  digitalWrite(13,LOW);  // input_out_pin
  pinMode(A0,OUTPUT);
  pinMode(A1,OUTPUT);
  pinMode(A2,OUTPUT);
  pinMode(A3,OUTPUT);
  vol_reg = EEPROM.read(0);treb_reg = EEPROM.read(1)-5;bass_reg = EEPROM.read(2);gain1 = EEPROM.read(4);
  gain2 = EEPROM.read(8);gain3 = EEPROM.read(9);gain4 = EEPROM.read(10);gain5 = EEPROM.read(5);
  in_reg = EEPROM.read(6);ball = EEPROM.read(7)-4;oled_off = EEPROM.read(11);
  if(oled_off>1){oled_off=0;}
  switch(in_reg){
     case 0: gain0 = gain1;out_in(1,0,0,0);break;
     case 1: gain0 = gain2;out_in(0,1,0,0);break;
     case 2: gain0 = gain3;out_in(0,0,1,0);break;
     case 3: gain0 = gain4;out_in(0,0,0,1);break;
     }
  audio_L();
  audio_R();
  times2=millis();

}

void loop(){
//  Serial.println(menu);
/// IR ////////////////////////////////////////
   if ( irrecv.decode( &ir )) {Serial.print("0x");Serial.println( ir.value,HEX);irrecv.resume();times=millis();w=1;w2=1;times1=millis();}// IR приемник - чтение, в мониторе порта отображаются коды кнопок
   if(ir.value==0){gr1=0;gr2=0;}// запрет нажатий не активных кнопок пульта   
//////// BUTTON /////////////////////////////////////////////////////////////////////////////////////////////////////////////
if(power==0){
if(mute_reg==0){
   if(digitalRead(7)==LOW||ir.value==IR2){menu++;times1=millis();gr1=0;gr2=0;cl();times=millis();w=1;w2=1;if(menu>3){menu=0;}}
   if((digitalRead(11)==LOW||ir.value==IR6)){in_reg++;menu=4;cl();times1=millis();times=millis();w=1;w2=1;www=1;if(in_reg>3){in_reg=0;}}
  }
   if((digitalRead(10)==LOW||ir.value==IR3)&&mute_reg==0){mute_reg=1;menu=100;cl();vol_old=vol_reg;vol_reg=79;audio_R();audio_L();
     u8g.firstPage();do {u8g.setFont(u8g_font_profont12r);u8g.drawStr(53,30,"MUTE");} while( u8g.nextPage() );}
   if((digitalRead(10)==LOW||ir.value==IR3)&&mute_reg==1){mute_reg=0;times1=millis();w=1;menu=0;cl();vol_reg=vol_old;audio_R();audio_L();}
}
////////// POWER ///////////////////
  if((digitalRead(9)==LOW||ir.value==POWER)&&power==0){power=1;menu=100;cl();vol_old=vol_reg;vol_reg=79;audio_R();audio_L();times2=millis();digitalWrite(13,LOW);
     u8g.firstPage();do {u8g.setFont(u8g_font_profont12r);u8g.drawStr(40,30,"POWER OFF");} while( u8g.nextPage() );
     MsTimer2::set(1, to_Timer);MsTimer2::stop();delay(1500);digitalWrite(5,LOW); u8g.firstPage();do {} while( u8g.nextPage() );}
   if((digitalRead(9)==LOW||ir.value==POWER)&&power==1){power=0;times1=millis();MsTimer2::set(1, to_Timer);MsTimer2::start();
     u8g.firstPage();do {u8g.setFont(u8g_font_profont12r);u8g.drawStr(42,30,"POWER ON");} while( u8g.nextPage() );delay(1500);
   w=1;menu=0;cl();vol_reg=vol_old;audio_R();audio_L();}

   if(millis()-times2>10000 && power==0){digitalWrite(13,HIGH);}

   if(power==0 || mute_reg==1){digitalWrite(8,HIGH);}else{digitalWrite(8,LOW);}

   if(digitalRead(7)==LOW && digitalRead(11)==LOW && power==1 && oled_off==0){oled_off=1;EEPROM.update(11,oled_off);
   u8g.firstPage();do {u8g.setFont(u8g_font_profont12r);u8g.drawStr(42,30,"OLED OFF");} while( u8g.nextPage() );
   delay(2000);u8g.firstPage();do {} while( u8g.nextPage() );}
   if(digitalRead(7)==LOW && digitalRead(11)==LOW && power==1 && oled_off==1){oled_off=0;EEPROM.update(11,oled_off);
   u8g.firstPage();do {u8g.setFont(u8g_font_profont12r);u8g.drawStr(42,30,"OLED  ON");} while( u8g.nextPage() );
   delay(2000);u8g.firstPage();do {} while( u8g.nextPage() );}
   
//////// VOLUME ////////////////////////////////////////////////////////////////////////////////////////////////////////////// 
  if(menu==0){
  if(newPosition != oldPosition){oldPosition = newPosition;if(newPosition>1){newPosition=1;}if(newPosition<-1){newPosition=-1;}
  vol_reg=vol_reg+newPosition;myEnc.write(0);newPosition=0;times1=millis();times=millis();w=1;w2=1;vol_func();audio_R();audio_L();}

   if(ir.value==IR5){vol_reg++;gr1=1;gr2=0;cl();times=millis();w=1;w2=1;vol_func();audio_R();audio_L();}// кнопка >
   if(ir.value==0xFFFFFFFF and gr1==1){vol_reg++;gr2=0;cl();times=millis();w=1;w2=1;vol_func();audio_R();audio_L();}// кнопка >>>>>>
   if(ir.value==IR4){vol_reg--;gr1=0;gr2=1;cl();times=millis();w=1;w2=1;vol_func();audio_R();audio_L();}// кнопка <
   if(ir.value==0xFFFFFFFF and gr2==1){vol_reg--;gr1=0;cl();times=millis();w=1;w2=1;vol_func();audio_R();audio_L();}// кнопка <<<<<<

  if(w==1){w=0;
  u8g.firstPage(); 
   do {
  u8g.setFont(u8g_font_profont12r);u8g.drawStr(0,8,"VOLUME");u8g.setFont(u8g_font_profont29r); u8g.setPrintPos(78, 22);u8g.print(71-vol_reg);
  u8g.setFont(u8g_font_profont12r);u8g.drawStr(0,18,"IN");
  u8g.setPrintPos(20, 18);u8g.print(in_reg+1);u8g.drawStr(0,28,"GAIN");u8g.setPrintPos(30, 28);u8g.print(gain0*2);
  u8g.drawLine(0, 32, 128, 32);
  u8g.setFont(u8g_font_profont12r);u8g.drawStr(0,44,"TREBLE");u8g.setPrintPos(80, 44);u8g.print(treb_reg*2);u8g.drawStr(95,44,"dB");
  u8g.setFont(u8g_font_profont12r);u8g.drawStr(0,54,"BASS");u8g.setPrintPos(80, 54);u8g.print(bass_reg*2);u8g.drawStr(95,54,"dB");
  u8g.setFont(u8g_font_profont12r);u8g.drawStr(0,64,"BALANCE");u8g.setPrintPos(80, 64);u8g.print(ball);u8g.drawStr(95,64,"dB");
   } while( u8g.nextPage() );
  }}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// 

//////// TREBLE ////////////////////////////////////////////////////////////////////////////////////////////////////////////// 
  if(menu==1){
  if(newPosition != oldPosition){oldPosition = newPosition;if(newPosition>1){newPosition=1;}if(newPosition<-1){newPosition=-1;}
  treb_reg=treb_reg-newPosition;myEnc.write(0);newPosition=0;times1=millis();times=millis();w=1;w2=1;treb_func();audio_R();audio_L();}

   if(ir.value==IR4){treb_reg++;gr1=1;gr2=0;cl();times=millis();w=1;w2=1;treb_func();audio_R();audio_L();}// кнопка >
   if(ir.value==IR5){treb_reg--;gr1=0;gr2=1;cl();times=millis();w=1;w2=1;treb_func();audio_R();audio_L();}// кнопка <

  if(w==1){w=0;
  u8g.firstPage(); 
   do {
  u8g.setFont(u8g_font_profont12r);u8g.drawStr(0,8,"TREBLE");u8g.setFont(u8g_font_profont29r); u8g.setPrintPos(78, 22);u8g.print(treb_reg*2); 
  u8g.setFont(u8g_font_profont12r);//u8g.drawStr(115,8,"dB");
  u8g.drawLine(0, 32, 128, 32);
  u8g.setFont(u8g_font_profont12r);u8g.drawStr(0,44,"BASS");u8g.setPrintPos(80, 44);u8g.print(bass_reg*2);u8g.drawStr(95,44,"dB");
  u8g.setFont(u8g_font_profont12r);u8g.drawStr(0,54,"BALANCE");u8g.setPrintPos(80, 54);u8g.print(ball);u8g.drawStr(95,54,"dB");
  u8g.setFont(u8g_font_profont12r);u8g.drawStr(0,64,"VOLUME");u8g.setPrintPos(80, 64);u8g.print(79-vol_reg);//u8g.drawStr(95,64,"dB");
   } while( u8g.nextPage() );
  }}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

//////// BASS ////////////////////////////////////////////////////////////////////////////////////////////////////////////// 
  if(menu==2){
  if(newPosition != oldPosition){oldPosition = newPosition;if(newPosition>1){newPosition=1;}if(newPosition<-1){newPosition=-1;}
  bass_reg=bass_reg-newPosition;myEnc.write(0);newPosition=0;times1=millis();times=millis();w=1;w2=1;bass_func();audio_R();audio_L();}

   if(ir.value==IR4){bass_reg++;gr1=1;gr2=0;cl();times=millis();w=1;w2=1;bass_func();audio_R();audio_L();}// кнопка >
   if(ir.value==IR5){bass_reg--;gr1=0;gr2=1;cl();times=millis();w=1;w2=1;bass_func();audio_R();audio_L();}// кнопка <

  if(w==1){w=0;
  u8g.firstPage(); 
   do {
  u8g.setFont(u8g_font_profont12r);u8g.drawStr(0,8,"BASS");u8g.setFont(u8g_font_profont29r); u8g.setPrintPos(78, 22);u8g.print(bass_reg*2); 
  u8g.setFont(u8g_font_profont12r);//u8g.drawStr(115,8,"dB");
  u8g.drawLine(0, 32, 128, 32);
  u8g.setFont(u8g_font_profont12r);u8g.drawStr(0,44,"BALANCE");u8g.setPrintPos(80, 44);u8g.print(ball);u8g.drawStr(95,44,"dB");
  u8g.setFont(u8g_font_profont12r);u8g.drawStr(0,54,"VOLUME");u8g.setPrintPos(80, 54);u8g.print(79-vol_reg);//u8g.drawStr(95,54,"dB");
  u8g.setFont(u8g_font_profont12r);u8g.drawStr(0,64,"TREBLE");u8g.setPrintPos(80, 64);u8g.print(treb_reg*2);u8g.drawStr(95,64,"dB");
    } while( u8g.nextPage() );
  }}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
//////// BALANCE ////////////////////////////////////////////////////////////////////////////////////////////////////////////// 
  if(menu==3){
  if(newPosition != oldPosition){oldPosition = newPosition;if(newPosition>1){newPosition=1;}if(newPosition<-1){newPosition=-1;}
  ball=ball-newPosition;myEnc.write(0);newPosition=0;times1=millis();times=millis();w=1;w2=1;ball_func();audio_R();audio_L();}

   if(ir.value==IR4){ball++;gr1=1;gr2=0;cl();times=millis();w=1;w2=1;ball_func();audio_R();audio_L();}// кнопка >
   if(ir.value==IR5){ball--;gr1=0;gr2=1;cl();times=millis();w=1;w2=1;ball_func();audio_R();audio_L();}// кнопка <

  if(w==1){w=0;
  u8g.firstPage(); 
   do {
  u8g.setFont(u8g_font_profont12r);u8g.drawStr(0,8,"BALANCE");u8g.setFont(u8g_font_profont29r); u8g.setPrintPos(78, 22);u8g.print(abs(ball)); 
  u8g.setFont(u8g_font_profont12r);//u8g.drawStr(115,8,"dB");
  if(ball<=0){u8g.drawStr(45,28,"LCH");}
  if(ball>=0){u8g.drawStr(105,28,"RCH");}
  u8g.drawLine(0, 32, 128, 32);
  u8g.setFont(u8g_font_profont12r);u8g.drawStr(0,44,"VOLUME");u8g.setPrintPos(80, 44);u8g.print(79-vol_reg);//u8g.drawStr(95,44,"dB");
  u8g.setFont(u8g_font_profont12r);u8g.drawStr(0,54,"TREBLE");u8g.setPrintPos(80, 54);u8g.print(treb_reg*2);u8g.drawStr(95,54,"dB");
  u8g.setFont(u8g_font_profont12r);u8g.drawStr(0,64,"BASS");u8g.setPrintPos(80, 64);u8g.print(bass_reg*2);u8g.drawStr(95,64,"dB");
    } while( u8g.nextPage() );
  }}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

////////////// INPUT GAIN ///////////////////////////////////////////////////////////////////
if(menu==4){
  switch(in_reg){
     case 0: gain0 = gain1;out_in(1,0,0,0);break;
     case 1: gain0 = gain2;out_in(0,1,0,0);break;
     case 2: gain0 = gain3;out_in(0,0,1,0);break;
     case 3: gain0 = gain4;out_in(0,0,0,1);break;
     }

  if (newPosition != oldPosition){oldPosition = newPosition;gain0=gain0-newPosition;myEnc.write(0);newPosition=0;times1=millis();times=millis();www=1;w=1;w2=1;gain_func();}

   if(ir.value==IR4){gain0++;gr1=1;gr2=0;cl();times=millis();w=1;w2=1;gain_func();audio_R();audio_L();}// кнопка >
   if(ir.value==IR5){gain0--;gr1=0;gr2=1;cl();times=millis();w=1;w2=1;gain_func();audio_R();audio_L();}// кнопка <

  switch(in_reg){
     case 0: gain1 = gain0;break;
     case 1: gain2 = gain0;break;
     case 2: gain3 = gain0;break;
     case 3: gain4 = gain0;break;
     } 
  if(www==1){audio_R();audio_L();www=0;}

  if(w==1){w=0;
  u8g.firstPage(); 
   do {
  u8g.setFont(u8g_font_profont12r);u8g.drawStr(0,8,"INPUT");u8g.setFont(u8g_font_profont29r); u8g.setPrintPos(78, 22);u8g.print(in_reg+1); 
  u8g.setFont(u8g_font_profont12r);//u8g.drawStr(115,8,"dB");
  u8g.drawLine(0, 32, 128, 32);
  u8g.setFont(u8g_font_profont12r);u8g.drawStr(0,44,"GAIN");u8g.setFont(u8g_font_profont29r); u8g.setPrintPos(78, 60);u8g.print(gain0*2);
    } while( u8g.nextPage() );
  }}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////   

////////////////// EEPROM //////////////////////////////////////////////////////////////
if(millis()-times>10000 && w2==1 && mute_reg==0 && power==0){
     EEPROM.update(0,vol_reg);EEPROM.update(1,treb_reg+5);EEPROM.update(2,bass_reg);EEPROM.update(4,gain1);
     EEPROM.update(8,gain2);EEPROM.update(9,gain3);EEPROM.update(7,gain4);EEPROM.update(5,gain5);
     EEPROM.update(6,in_reg);EEPROM.update(10,ball+4);
     if(menu!=0){menu=0;}w=1;w2=0;} 
if(millis()-times1>30000 && mute_reg==0 && oled_off==1){ u8g.firstPage();   do {}  while( u8g.nextPage() );}
}// end loop

void treb_func(){if(treb_reg<-5){treb_reg=-5;}if(treb_reg>5){treb_reg=5;}}
void gain_func(){{if(gain0<0){gain0=0;}if(gain0>15){gain0=15;}}}
void ball_func(){if(ball>4){ball=4;}if(ball<-4){ball=-4;}}
void bass_func(){if(bass_reg<0){bass_reg=0;}if(bass_reg>10){bass_reg=10;}}
void vol_func(){if(vol_reg<0){vol_reg=0;}if(vol_reg>71){vol_reg=71;}}
void to_Timer(){newPosition = myEnc.read()/4;}
void cl(){ir.value=0;delay(300);}
void out_in(bool o1, bool o2, bool o3, bool o4){digitalWrite(A0,o1);digitalWrite(A1,o2);digitalWrite(A2,o3);digitalWrite(A3,o4);}

void audio_L(){
  lc.addr();
  lc.set_input(in_reg);   // input 1...4 = byte 0...3 (byte 4...7 = All switches off)
  lc.set_gain(gain0);    // gain 0...30 dB step 2 dB = byte 0...15
  lc.set_volume(vol_reg+4-ball);  // volume 0...-79 dB = byte 0...79  71+4-4
  lc.set_treble(treb_reg);  // treble -10...10 dB step 2 dB = int -5...5
  lc.set_bass(bass_reg);    // bass 0...20 dB step 2 dB = int 0...10
  lc.set_ch(1);      // Channel Selection RCH = byte 2, LCH = byte 1, Left and right together = byte 3
  lc.test();
  }

void audio_R(){
  lc.addr();
  lc.set_input(in_reg);   // input 1...4 = byte 0...3 (byte 4...7 = All switches off)
  lc.set_gain(gain0);    // gain 0...30 dB step 2 dB = byte 0...15
  lc.set_volume(vol_reg+4+ball);  // volume 0...-79 dB = byte 0...79   71+4+4
  lc.set_treble(treb_reg);  // treble -10...10 dB step 2 dB = int -5...5
  lc.set_bass(bass_reg);    // bass 0...20 dB step 2 dB = int 0...10
  lc.set_ch(2);      // Channel Selection RCH = byte 2, LCH = byte 1, Left and right together = byte 3
  lc.test();
  }