Serial comm between uC and PC...

include <pic.h>				// pic specific identifiers
#define _XTAL_FREQ  20000000		// Xtal speed
__CONFIG(0x3F71);				// Config bits
 
 
		// Required prototypes.. each function needs to be declared
		// if called BEFORE definition.
 
 
unsigned char  HSerin(void);
void HSerout(unsigned char ch), HSerinit(void);
 
void main(void)						// program entry
	{
	int index = 0;
	unsigned char ch;
	ADCON1 = 0x6;					// Analogue off					
	HSerinit();
       __delay_ms(150);
	while(1)						// endless Loop
		{
		ch = HSerin();				// wait for a character
 		HSerout(ch);				// Echo back
 
		}
	}
 
void HSerinit()
	{
	TRISC = 0xC0;					// should ideally be set
	SPBRG = 129;					// 20Mhz xtal 9600 BAUD
	TXSTA = 0x24;					// TXEN and BRGH
	RCSTA = 0x90;					// SPEN and CREN
	}
 
void HSerout(unsigned char ch)
	{
	while(!TXIF);					// Wait for module to finish
	TXREG = ch;						// ready to send
	}
unsigned char HSerin()
	{
	while(!RCIF);					// Wait for a character
	return RCREG;					// return character
 
	}

#include <xc.h>				// pic specific identifiers
#define _XTAL_FREQ  20000000		// Xtal speed
#pragma config CONFIG = 0xFF72
 
		// Required prototypes.. each function needs to be declared
		// if called BEFORE definition.
 
 
unsigned char  HSerin(void);
void HSerout(unsigned char ch), HSerinit(void);
 
void main(void)						// program entry
	{
	int index = 0;
	unsigned char ch;
	ADCON1 = 0x6;					// Analogue off					
	HSerinit();
       __delay_ms(150);
	while(1)						// endless Loop
		{
		ch = HSerin();				// wait for a character
 		HSerout(ch);				// Echo back
 
		}
	}
 
void HSerinit()
	{
	TRISC = 0b10000000;					// should ideally be set
	SPBRG = 129;					// 20Mhz xtal 9600 BAUD
	TXSTA = 0x24;					// TXEN and BRGH
	RCSTA = 0x90;					// SPEN and CREN
	}
 
void HSerout(unsigned char ch)
	{
	while(!TXIF);					// Wait for module to finish
	TXREG = ch;						// ready to send
	}
unsigned char HSerin()
	{
	while(!RCIF);					// Wait for a character
	return RCREG;					// return character
 
	}

#include <htc.h>				// pic specific identifiers
#define _XTAL_FREQ  20000000		// Xtal speed
#pragma config CONFIG = 0xFF72

unsigned char  HSerin(void);
 void HSerout(unsigned char ch),
 HSerinit(void); 

 void main(void)                        // program entry  
   {     
   int index = 0;  
   unsigned char ch = 'a';         // <- LOOK HERE.
   ADCON1 = 0x6;                    // Analogue off    
   HSerinit();      
  __delay_ms(150);    
 while(1)                        // endless Loop       
  {           HSerout(ch);                // Echo back     
  }
 
 } 


 void HSerinit()    
 {     
   TRISC = 0b10000000;                    // should ideally be set  
   SPBRG = 129;                    // 20Mhz xtal 9600 BAUD    
   TXSTA = 0x24;                    // TXEN and BRGH   
   RCSTA = 0x90;                    // SPEN and CREN    
 }  

 void HSerout(unsigned char ch)     {  
   while(!TXIF);                    // Wait for module to finish   
  TXREG = ch;                        // ready to send   
  }