PIC16F877 and UART mikroC example

char uart_rd;
 
void main() {
  //ANSEL  = 0;                     // Configure AN pins as digital
  //ANSELH = 0;
 
  UART1_Init(9600);               // Initialize UART module at 9600 bps
  Delay_ms(100);                  // Wait for UART module to stabilize
 
  UART1_Write_Text("Start");
  UART1_Write(13);
  UART1_Write(10);
  UART1_Write_Text("PIC UART example in MIKROC");
  UART1_Write(13);
  UART1_Write(10);
 
  while (1) {                     // Endless loop
    if (UART1_Data_Ready()) {     // If data is received,
      uart_rd = UART1_Read();     // read the received data,
      UART1_Write(uart_rd);       // and send data via UART
    }
  }
}

/*
*
*
* File                : USART.c
* Hardware Environment:	OpenPIC16F877A && rs232 &&  5v voltage && 4M crystal oscillator
* Build Environment   : MPLAB IDE && sscom32
* Version             : V8.76
* By                  : Zhou Jie
*
*                                  (c) Copyright 2011-2016, WaveShare
*                                       http://www.waveShare.net
*                                          All Rights Reserved
*
*
*/
#include<pic.h>         
 __CONFIG(0xFF32);        
 
 
void main()
 {
  TRISC=0X0;                 
  SPBRG=0XC;                 
  TXSTA=0X24;               
  RCSTA=0X90;               
  RCIE=0X1;                  
  GIE=0X1;                   
  PEIE=0X1;                
  while(1)                 
   {;}
  }
 
 
void interrupt usart(void)
  {
   if(RCIE&&RCIF)           
     {
      TXREG=RCREG;          
     }
   }