adc10.c

dc servo using dspic30f

//---------------------------------------------------------------------
//	File:		adc10.c
//
//	Written By:	Lawrence Glaister VE7IT
//
// Purpose: routines to setup and use 10 bit A/D ports
//      
// 
//---------------------------------------------------------------------
//
// Revision History
//
// 18 Mar 2006 -- first version
//---------------------------------------------------------------------- 
#include "dspicservo.h"
#include <adc10.h>
extern volatile unsigned short int timer_a2d;

/************************************************************************
* Function Name     : ADC10_read
* Description       : This function reads from ch0 AN0
* Parameters        : 
* Return Value      : unsigned int
*************************************************************************/
unsigned int ADC10_read(void)
{	
//	printf("adc10-read  starting\r\n");
	timer_a2d = 5;				// 2 ticks of 100us clock
	while ( timer_a2d );		// delay for sample time
//	printf("adc10-read after sample delay\r\n");
	ADCON1bits.SAMP = 0;		// start converting
	while (!ADCON1bits.DONE);	// wait for conversion to complete (12fcy)
//	printf("adc10-read after conversion complete\r\n");
	return ADCBUF0;
}

/*********************************************************************
* Function Name     : setup_ADC10
* Description       : Configures the ADC. This includes :