adc0832.c

It is an embedded C program written to control ADC0832 with MCU P89V51RD2. There are R/W function. A

// *********************************************************************************** //
//
//	Filename		:   adc0832.c
//	Title        	:   ADC0832 Source File
//	Author			:   Fung Tin Ching
//	Created Date	:   2006.7.24
//	Revisited Date	:   2008.01.16
//	Description		:   Provide Function to get the value from the ADC0832 at any three pins
//	Version         :   1.2
//
//  Copyright (c) 2008, All rights reserved.
// *********************************************************************************** //

#include "adc0832.h"

volatile u08 CH0=0;
volatile u08 CH1=0;

unsigned char get_ADC_onewire(unsigned char ch)
{
	unsigned char temp=0,i;
	if (!((ch==0)||(ch==1)))
		return 0;

	ADC_CLK=0;
	ADC_CS=0;
	ADC_DIDO=1;

	ADC_clk_pulse();

	ADC_DIDO=SGL_DIF;
	ADC_clk_pulse();
		
	ADC_DIDO=ch;
	ADC_clk_pulse();
	ADC_DIDO=1;
	temp=ADC_DIDO;
	temp=0;
	for (i=0;i<7;i++){
		ADC_clk_pulse();
		temp|=(unsigned char)ADC_DIDO;	
		temp= temp << 1;
	}

	for (i=0;i<13;i++){
		ADC_clk_pulse();
	}

	ADC_CS=1;
	ADC_DIDO=1;
	ADC_CLK=0;

	return temp;
}

void ADC_clk_pulse(void)
{
	ADC_CLK=0;
	ADC_CLK=1;

	ADC_CLK=0;
}