//    ENG ABDALLA  HYGAZY     //
     //    COUNTER  CONTROL        //
    //     DATA  2020/6/17         //
    //     Frequency  8  MHz       //
    //     PIC16F877A             //
// Site   https://www.qariya.info/vb/showthread.php?t=247636    //

     #define  The_engine_stops  PORTD.f3
     #define  MOTOR_Brakes      PORTD.f2
     #define  MOTOR             PORTD.f0
     
    #define  DP   PORTB.f7
    #define  BUZ  PORTD.F1=1;  delay_ms(250);  PORTD.F1=0;  delay_ms(80);
    #define  BUZ_count_is_over  for(X=0;X<4;X++){PORTD.F1=1; delay_ms(550);  PORTD.F1=0; delay_ms(150); }
   //********************========************************//
     unsigned int STOP=0,NEXT,X;
     unsigned int DATA_1,DATA_2,DATA_3,DATA_4,DATA_CC;
     unsigned int AA1=0,AA2,AA3,AA4=0,AA5=0,a1=0,Brakes=0,START;
     unsigned short mask(unsigned short num);
     long tlong;
  //********************========************************//

  //======================= show_adc ==========================================//
     /*void show_adc() {
      adc_rd = ADC_Read(0);
      tlong = (long)adc_rd * 5000;
     tlong = tlong / 1023;
 }*/
  //=============== show_adc === END ========================================//


   //=========================== void SETENG ================================//
         void SETENG(){ PORTC.F6=1;
              DATA_1  =  DATA_1 / 1000;
              DATA_2  =  DATA_2 / 100;
              DATA_3  =  DATA_3 / 10 ;


         while (NEXT==0) {

         PORTA=1;
         PORTB=mask(DATA_1);delay_ms(1);

     //********************************************************//

         if(PORTD.F7==1){ DATA_1 ++; delay_ms(350);}
         if(PORTD.F6==1){ DATA_1 --;  delay_ms(350);}
         if(DATA_1>9 ){ DATA_1 =9; delay_ms(20);}
         if(DATA_1<0 ){ DATA_1 =0; delay_ms(20);}
         if(PORTD.F5==1){BUZ BUZ NEXT=1; delay_ms(500);}
      //********************************************************//

      }
        EEPROM_Write(0, DATA_1); delay_ms(10); NEXT=0;


   //=============================================================================//
      
       while (NEXT==0) {

         PORTA=1;
         PORTB=mask(DATA_1);  delay_ms(1);

         PORTA=2;
         PORTB=mask(DATA_2);  delay_ms(1);

     //********************************************************//

         if(PORTD.F7==1){ DATA_2 ++; delay_ms(350);}
         if(PORTD.F6==1){ DATA_2 --;  delay_ms(350);}
         if(DATA_2>9 ){ DATA_2 =9; delay_ms(20);}
         if(DATA_2<0 ){ DATA_2 =0; delay_ms(20);}
         if(PORTD.F5==1){BUZ BUZ NEXT=1; delay_ms(500);}
      //********************************************************//

      }
        EEPROM_Write(1, DATA_2); delay_ms(10);  NEXT=0;

     //================================================================================//
       while (NEXT==0) {

         PORTA=1;
         PORTB=mask(DATA_1);  delay_ms(1);

         PORTA=2;
         PORTB=mask(DATA_2);  delay_ms(1);

         PORTA=4;
         PORTB=mask(DATA_3);  delay_ms(1);


     //********************************************************//

         if(PORTD.F7==1){ DATA_3 ++; delay_ms(350);}
         if(PORTD.F6==1){ DATA_3 --;  delay_ms(350);}        // MEN HONAA  KAMEEL //
         if(DATA_3>9   ){ DATA_3 =9; delay_ms(20);}
         if(DATA_3<0   ){ DATA_3 =0; delay_ms(20);}
         if(PORTD.F5==1){BUZ BUZ NEXT=1; delay_ms(500);}
      //********************************************************//

      }
        EEPROM_Write(2, DATA_3); delay_ms(10); NEXT=0; // STOP=0;

     //========================================================================//
      
       while (NEXT==0) {

         PORTA=1;
         PORTB=mask(DATA_1);  delay_ms(1);

         PORTA=2;
         PORTB=mask(DATA_2);  delay_ms(1);

         PORTA=4;
         PORTB=mask(DATA_3);  delay_ms(1);

         PORTA=8;
         PORTB=mask(DATA_4);  delay_ms(1);


     //********************************************************//

         if(PORTD.F7==1){ DATA_4 ++; delay_ms(350);}
         if(PORTD.F6==1){ DATA_4 --;  delay_ms(350);}
         if(DATA_4>9   ){ DATA_4 =9; delay_ms(20);}
         if(DATA_4<0   ){ DATA_4 =0; delay_ms(20);}
         if(PORTD.F5==1){BUZ BUZ NEXT=1; delay_ms(500);}
      //********************************************************//

      }
        EEPROM_Write(3, DATA_4); delay_ms(10); NEXT=0;  STOP=0;     // MEN HONAA  KAMEEL //

     //========================================================================//

       DATA_1 =   DATA_1 *1000;
       DATA_2 =   DATA_2 *100;
       DATA_3 =   DATA_3 *10;

       tlong =  DATA_1 +  DATA_2 +  DATA_3 +  DATA_4;
      
    }
      
      
  //=============== void SETENG ===== END ==============================//


  //============ Timer0 =========== InitTimer0 ========================//
    //Timer0
   //Prescaler 1:8; TMR0 Preload = 6; Actual Interrupt Time : 1 ms
   //Place/Copy this part in declaration section
   void InitTimer0(){
   OPTION_REG   = 0x82;
   TMR0         = 6;
   INTCON       = 0xA0;
 }
 //========================      END    ===============================//

 //========================  Interrupt ===============================//
    void Interrupt(){
    if (TMR0IF_bit){
    TMR0IF_bit         = 0;
    TMR0         = 6;
    //Enter your code here

         AA4++;  AA5++;
         
        if( AA4==1000 ) { AA4=0;   }

      if(STOP==0)
    {

       if(AA5==1)
      {
       a1 = tlong / 1000;
       PORTA=1;
       PORTB=mask(a1); a1=0;

      }

      if(AA5==2)
      {
       a1 = (tlong % 1000)/100;
       PORTA=2;
       PORTB=mask(a1);  a1=0;

      }

      if(AA5==3)
      {
       a1   = (tlong % 1000)%100/10;
       PORTA=4;
       PORTB=mask(a1); a1=0;

     }

      if(AA5==5)
      {
       a1  = (tlong % 1000)%100%10;
       PORTA=8;
       PORTB=mask(a1); a1=0;

      }

       if(AA5==6){ AA5=0;}
       
       if(tlong>9999){ tlong=9999; PORTD.F0=0; }
    }


       if(PORTD.F5==1){ BUZ BUZ STOP=1;  SETENG();}

  }
}

 //===================  Interrupt == END  ===============================//



 //========================   void main  ==========================//

      void main() {
      TRISB=0;   PORTB=0;
      TRISD=240; PORTD=0;
      TRISC=128; PORTC=0;
      TRISE=7;   PORTE=0;
      TRISA=0;   PORTA=0;
      CMCON=0;
      ADCON0=0x00;
      InitTimer0();



      DATA_1  = EEPROM_Read(0); delay_ms(10);
      DATA_1  = DATA_1  *1000;

      DATA_2 = EEPROM_Read(1); delay_ms(10);
      DATA_2 = DATA_2 *100;

      DATA_3 = EEPROM_Read(2); delay_ms(10);
      DATA_3 = DATA_3 *10;

      DATA_4 = EEPROM_Read(3); delay_ms(10);

      delay_ms(1000);
      BUZ   BUZ
      loop:
      PORTD.F3=1;  PORTC.F0=0; Brakes=0; MOTOR_Brakes=0;
      PORTC.F1=0;
            tlong =  DATA_1 +  DATA_2 +  DATA_3 +  DATA_4;
            DATA_CC =  tlong  ;

      while(1){


      if(PORTD.F4==1)
      { 
       delay_ms(250);
       MOTOR=1; MOTOR_Brakes=0;PORTC.F1=1; The_engine_stops=0;  tlong =0;

       while(Brakes==0){
      
      
          if(PORTC.F7==1 && START==0) { while(PORTC.F7==1){ }tlong ++;  }
          if(tlong >= DATA_CC ) 
          {
            MOTOR=0; MOTOR_Brakes=1; The_engine_stops=1;
            PORTC.F0=1; Brakes=1; BUZ_count_is_over START=0; goto loop;
           }
      
      
       if(PORTD.F4==1) { MOTOR=0; MOTOR_Brakes=1; delay_ms(250); START++;  }
       if(START==1   ) { The_engine_stops=1; MOTOR=0;                         }
       if(START==2   ) { MOTOR_Brakes=0; The_engine_stops=0; MOTOR=1; START=0;    }

     }

    }



 }
}

 //====================== void main === END  ==========================//


 //========================   switch (num)  ==========================//
unsigned short mask(unsigned short num){
switch (num){

case 0 : return 0xC0;
case 1 : return 0xF9;
case 2 : return 0xA4;
case 3 : return 0xB0;
case 4 : return 0x99;
case 5 : return 0x92;
case 6 : return 0x82;
case 7 : return 0xF8;
case 8 : return 0x80;
case 9 : return 0x90;

}
}

//========================      END    ==========================//