[PIC] connect Microcontroller PIC16F84A to PC via rs232 using MPlab xc8 (xc8 Code)

 #include 
 #include "delay.h"
 
 // Clock Speed for delay function
 #define	XTAL_FREQ	4MHZ  
 
 // Manual SPI control for MAX3100	
 #define CS RD2        				// Chip Select
 #define SPI_OUT RC5				// SPI Data Out
 #define SPI_IN	RC4					// SPI Data In
 #define SPI_CLK RC3 				// SPI Clock

 // Burn Configuration word
 __CONFIG(XT & WDTDIS & PWRTEN & BORDIS & LVPDIS & WRTEN & DEBUGDIS & UNPROTECT);
 
 /*--------------------------------------------------------------------*
  Function: main
  Inputs:	None (void)
  Outputs:	None (void)
 *---------------------------------------------------------------------*/
 void main(void)
 {
 	 // Local variables
 	 char int_array[16] = {1,1,0,0,0,0,0,0,0,0,0,0,1,0,1,1};		// MAX3100 Initiate sequence 9600 baud
 	 char cmd_array[16] = {0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,1};		// MAX3100 Command sequence: TEST MODE
 	 int i=0;					// Integer used for loop counting
 	 
	 // Set Clock to 0
	 SPI_CLK = 0;
	 
	 // Setup SPI direction bits
	 TRISD2 = 0;				// Set Chip Select as output
	 TRISC5 = 0; 				// Set SPI data out as output
	 TRISC4 = 1;				// Set SPI data in as input
	 TRISC3 = 0;				// Set SPI clock as output
	 	 
 	 // Send MAX3100 Initiation command
 	 CS = 0;						// Take Chip Select low
 	 for(i=0; i<16; i++)
     {
	 	 SPI_OUT = int_array[i];	// Send Array bit by bit
		 DelayMs(100);				// Wait a bit
		 SPI_CLK ^= 0x0F;			// Toggle clock
		 DelayMs(100);				// Wait a bit
	 }
	 CS = 1;						// Take Chip Select high
	 
	 DelayMs(500);					// Wait before next write
 	 
 	 // Send MAX3100 TEST command
 	 CS = 0;						// Take Chip Select low
 	 for(i=0; i<16; i++)
     {
	 	 SPI_OUT = cmd_array[i];	// Send Array bit by bit
		 DelayMs(100);				// Wait a bit
		 SPI_CLK ^= 0x0F;			// Toggle clock
		 DelayMs(100);				// Wait a bit
	 }
	 //CS = 1;						// Take Chip Select high
	 
	// Loop forever 
 	while(1);
 }