UART1_Write_Text("test");

unsigned char recived , recived_flag=0;

// Interrupt routine
void interrupt() 
{
 recived=0;
 if(RCIF_bit==1)
     {
      recived= UART1_Read();
      if(recived=='a' || recived=='b')recived_flag=1;
     
     }
}


void main()
{
 cmcon=7;
 trisa.f0=0;
 trisa.f1=0;
 porta.f0=0;
 porta.f1=0;
  RCIE_bit = 1;                        // enable interrupt on UART1 receive
  TXIE_bit = 0;                        // disable interrupt on UART1 transmit
  PEIE_bit = 1;                        // enable peripheral interrupts
  GIE_bit = 1;                         // enable all interrupts

 UART1_Init(9600);                    // initialize UART1 module
  Delay_ms(100);
  UART1_Write_Text("test");
 while(1)
       {
        if(recived_flag==1)
              {
               recived_flag=0;
               if(recived=='a'){ porta.f0=~porta.f0;delay_ms(200);}
               else if(recived=='b'){porta.f1=~porta.f1;delay_ms(200);}
              
              }

       }
}