sbit sw_puls at         Rb0_bit;
sbit sw_dir at         Rb1_bit;
bit kk1 , kk2 ;
char state=0 ,puls1=0, state_run=0 , negative=0 ;
short value=0;
#define motor_stepper  porta=(porta &0xF0)


void interrupt()
{
 if(INTF_bit==1)
         {
          INTF_bit=0;
          kk1=1;
         }

}
void main()
{
  TRISA.f0=0;
  TRISA.f1=0;
  TRISA.f2=0;
  TRISA.f3=0;
  motor_stepper= 0 ;
  trisb.f0=1;
  trisb.f1=1;
  GIE_bit=1;
  INTE_bit=1;
  INTF_bit=0;
  INTEDG_bit=1;

  while(1)
         {
            if(sw_dir==1)value=-1;
            else value=1;

          if(  kk1==1 )
                         {
                            kk1=0;
                            GIE_bit=0;
                            if(value==1)
                                         {
                                          if(puls1>0 && negative==2){puls1--;state=2;}
                                          else {puls1++;state=1; negative=1;}

                                         }
                                   else if(value==-1)
                                              {
                                               if(puls1>0 && negative==1){puls1--;state=1;}
                                               else {puls1++;state=2; negative=2;}
                                              }

                                   if(puls1>=8)puls1=0;

                               GIE_bit=1;
                           }

          


          if( state==1)
               {
                state=0;

               switch(puls1)
                            {
                             case 0:motor_stepper |=9;break;
                             case 1:motor_stepper |=1;break; //-45
                             case 2:motor_stepper |=3;break; //-90
                             case 3:motor_stepper |=2;break;  //-135
                             case 4:motor_stepper |=6;break; //-180
                             case 5:motor_stepper |=4;break; //-225
                             case 6:motor_stepper |=12;break;//-270
                             case 7:motor_stepper |=8;break;//-315

                             default:break;
                            }

               }
            else if(  state==2)
               {

                state=0;

                switch(puls1)
                            {
                             case 0:motor_stepper |=9;break; //0
                             case 1:motor_stepper |=8;break; //45
                             case 2:motor_stepper |=12;break; //90
                             case 3:motor_stepper |=4;break;  //135
                             case 4:motor_stepper |=6;break; //180
                             case 5:motor_stepper |=2;break; //225
                             case 6:motor_stepper |=3;break; //270
                             case 7:motor_stepper |=1;break;//315

                             default:break;
                            }

               }
         }
}

 cmcon=7;

sbit sw_puls at         Rb0_bit;
sbit sw_dir at         Rb1_bit;
bit kk1 , kk2 ;
char state=0 ,puls1=0, state_run=0 , negative=0 ;
unsigned int time_stop;
short value=0;
#define motor_stepper  porta=(porta &0xF0)

//Timer0
//Prescaler 1:256; TMR0 Preload = 61; Actual Interrupt Time : 49.92 ms

//Place/Copy this part in declaration section
void InitTimer0(){

  TMR0		 = 61;

}


void interrupt()
{
  if (TMR0IF_bit){
    TMR0IF_bit	 = 0;
    TMR0		 = 61;
    //Enter your code here
    time_stop++;
  }
 if(INTF_bit==1)
         {
          INTF_bit=0;
          kk1=1;
         }

}
void main()
{
  TRISA.f0=0;
  TRISA.f1=0;
  TRISA.f2=0;
  TRISA.f3=0;
  motor_stepper= 0 ;
  trisb.f0=1;
  trisb.f1=1;
  InitTimer0();
  intcon=0xB0;
 OPTION_REG = 0xC7;
  while(1)
         {
            if(sw_dir==1)value=-1;
            else value=1;

          if(  kk1==1 )
                         {
                            kk1=0;
                            GIE_bit=0;
                            time_stop=0;
                            if(value==1)
                                         {
                                          if(puls1>0 && negative==2){puls1--;state=2;}
                                          else {puls1++;state=1; negative=1;}

                                         }
                                   else if(value==-1)
                                              {
                                               if(puls1>0 && negative==1){puls1--;state=1;}
                                               else {puls1++;state=2; negative=2;}
                                              }

                                   if(puls1>=8)puls1=0;

                               GIE_bit=1;
                           }

          


          if( state==1)
               {
                state=0;

               switch(puls1)
                            {
                             case 0:motor_stepper |=9;break;
                             case 1:motor_stepper |=1;break; //-45
                             case 2:motor_stepper |=3;break; //-90
                             case 3:motor_stepper |=2;break;  //-135
                             case 4:motor_stepper |=6;break; //-180
                             case 5:motor_stepper |=4;break; //-225
                             case 6:motor_stepper |=12;break;//-270
                             case 7:motor_stepper |=8;break;//-315

                             default:break;
                            }

               }
            else if(  state==2)
               {

                state=0;

                switch(puls1)
                            {
                             case 0:motor_stepper |=9;break; //0
                             case 1:motor_stepper |=8;break; //45
                             case 2:motor_stepper |=12;break; //90
                             case 3:motor_stepper |=4;break;  //135
                             case 4:motor_stepper |=6;break; //180
                             case 5:motor_stepper |=2;break; //225
                             case 6:motor_stepper |=3;break; //270
                             case 7:motor_stepper |=1;break;//315

                             default:break;
                            }

               }
               
           if(time_stop> 20 ) // 1sec=1000ms ==> 1000/50=20
                 {
                 motor_stepper= 0 ;// OFF motor
                 }
         }
}