#include <ADUC814.H>
#include <stdio.h>
#include <math.h>
#include <string.h>
#include <GLOBAL.H>
#include <FUNCTION.H>

/* SPI port interrupt service routine */
void spi_int () interrupt 7{
	recieved_byte = SPIDAT; // clear by reading 
	
	sent_byte = recieved_byte + 1;
	SPIDAT = sent_byte;
}


unsigned char enable_interrupts()
{
	EA = 1;                       // Enable General interrupts
	IEIP2 = 0x11;                 // Enable SPI interrupt with high priority
	return 0;
}

unsigned char init()
{
	/* Select core clock */
	PLLCON  = 0x04;         //16.77216 MHz (0x01 = 8.388608 MHz   | 0x03 = 2.0971 MHz)
	
	/* Configure SPI */
	SPICON = 0x28; 					// CPHA=0, CPOL=1, Slave			
	CFG814 = 0x01; 					// Enable SPI interface
	
	return 0;
}

//-----------------------------------------------------------------------------
//MAIN C function
//-----------------------------------------------------------------------------
void main (void)
{
	unsigned char chan_2_convert;
	
	// Initialize
	init();
	enable_interrupts();
	
	while (1)
		{
			
		}
}