Stc89c52/90c516rd/89c516rd ADC0832 ADC driver code

1. Hardware

STC89C52/90C516RD/89C516RD etc.
Crystal oscillator ：11.0592M
Memory configuration ：

Memory Model by small, Selecting other may not work properly .

2. Code

adc0832.h

#ifndef __ADC0832_H__
#define __ADC0832_H__

#include <reg52.h>

#ifndef uchar
#define uchar unsigned char
#endif

#ifndef uint
#define uint unsigned int
#endif

sbit CS   = P1^0;
sbit Clk = P1^1;
sbit DATI = P1^2;
sbit DATO = P1^2;

uchar get_adc0832_data(uchar CH);

#endif

adc0832.c

#include "adc0832.h"
#include <stdlib.h>
#include <intrins.h>

uint dat = 0x00;      //AD value 
uchar CH;       // Channel variables 
uchar data dis[] = {
    0x00, 0x00,0x00,0x00};       // Display value 

/*  Function description ： obtain ADC0832 data   Parameters ：CH 0 perhaps 1 Represents its two different channels   Return value ： Measured ADC value  */
uchar get_adc0832_data(uchar CH)
{
    
	uchar i,test,adval;
	adval = 0x00;
	test = 0x00;
	Clk = 0;       // initialization 
	DATI = 1;
	_nop_();
	CS = 0;
	_nop_();
	Clk = 1;
	_nop_();
	
	
	if ( CH == 0x00 )      // Channel selection 
	{
    
		Clk = 0;
		DATI = 1;      // passageway 0 First of all 
		_nop_();
		Clk = 1;
		_nop_();
		Clk = 0;
		DATI = 0;      // passageway 0 The second of 
		_nop_();
		Clk = 1;
		_nop_();
	} 
	else
	{
    
		Clk = 0;
		DATI = 1;      // passageway 1 First of all 
		_nop_();
		Clk = 1;
		_nop_();
		Clk = 0;
		DATI = 1;      // passageway 1 The second of 
		_nop_();
		Clk = 1;
		_nop_();
	}
	
	Clk = 0;
	DATI = 1;
	for( i = 0;i < 8;i++ )      // Before reading 8 The value of a 
	{
    
		_nop_();
		adval <<= 1;
		Clk = 1;
		_nop_();
		Clk = 0;
		if (DATO)
		adval |= 0x01;
		else
		adval |= 0x00;
	}
	for (i = 0; i < 8; i++)      // After reading 8 The value of a 
	{
    
		test >>= 1;
		if (DATO)
		test |= 0x80;
		else 
		test |= 0x00;
		_nop_();
		Clk = 1;
		_nop_();
		Clk = 0;
	}
	if (adval == test)      // Compare the former 8 Bit and back 8 The value of a , If not, leave it . If it keeps appearing, it will be displayed as zero , Please remove this line 
	dat = test;
	nop_();
	CS = 1;        // Release ADC0832
	DATO = 1;
	Clk = 1;
	return dat;
}