main.c

#define FCY 8000000UL // FCY = FOSC / 2

#include <xc.h>
#include <stdio.h>
#include <libpic30.h>
#include <p30F2020.h>
#include "config.h"

int main(void)
{
	int channel1Result;
    int channel3Result;
		
	/* Set up the ADC Module */
	
	ADCONbits.ADSIDL    = 0;        /* Operate in Idle Mode	*/
	ADCONbits.FORM      = 0;        /* Output in Integer Format	*/
	ADCONbits.EIE       = 1;        /* Enable Early Interrupt */
	ADCONbits.ORDER     = 0;        /* Even channel first */
	ADCONbits.SEQSAMP   = 1;        /* Sequential Sampling Enabled */
	ADCONbits.ADCS      = 5;        /* Clock Divider is set up for Fadc/14 */
	
	ADPCFG              = 0xFFFC;   /* AN0 and AN1 are analog inputs */
	ADSTAT              = 0;        /* Clear the ADSTAT register */
	ADCPC0bits.TRGSRC0  = 1;        /* Use SW trigger */
	ADCPC0bits.IRQEN0	  = 1;		  /* Enable the interrupt	*/
	
	ADCONbits.ADON 	    = 1;        /* Start the ADC module	*/	
			
	/* Set up the Interrupts */
	
	IFS0bits.ADIF       = 0;        /* Clear AD Interrupt Flag */	
	IPC2bits.ADIP       = 4;        /* Set ADC Interrupt Priority */
	IEC0bits.ADIE       = 1;        /* Enable the ADC Interrupt */
	
	ADCPC0bits.SWTRG0   = 1;        /* Trigger the Conversion Pair 0 */	
	
    int a1;
    int a2;
    
    // enable UART communication
    U1BRG = 12; // baudrate
    U1MODEbits.UARTEN = 1; // enable UART
	while (1)
	{
		while(ADCPC0bits.PEND0);    /* Wait for the 2nd conversion to
		                               complete	*/
		channel1Result 	= ADCBUF1;  /* Read the result of the second
		                               conversion	*/	
        a1 = channel1Result;
        a2 = channel1Result;
		ADCPC0bits.SWTRG0	= 1;    /* Trigger another conversion */	
        
        printf("Analog 1 : %d \n", a1);
        printf("Analog 2 : %d \n", a2);
                
        __delay_ms(1000);		
	}
}