adc.c

来自「这是一个大模式下ucos51的移植结果,因为大部分可载的ucos51都是小模式下」· C语言 代码 · 共 49 行

#include   "reg51.h " 
#include   <intrins.h> 
#include   <absacc.h> 
sbit   ADCclk=P1^1; 
sbit   ADCdata=P1^2; 
sbit   ADCcs=P1^0; 

void   DelayADC0831() 
{ 
unsigned   char   i; 
	for(i=i;i<200;i++); 
} 

void InitADC0831()
{
	ADCcs=1;
}

unsigned char   ReadADC0831() 
{ 
	unsigned   char   i,temp; 
	ADCclk=0; 
	ADCcs=0; 
	DelayADC0831();
	ADCclk=1; 
	DelayADC0831();
	ADCclk=0; 
	DelayADC0831();
	ADCclk=1; 
	DelayADC0831();
	ADCclk=0; 
	DelayADC0831();
	for(i=0;i <8;i++) 
	{ 
		temp=temp<<1;
		temp=(temp | ADCdata); 
		ADCclk=1; 
		DelayADC0831();
		ADCclk=0; 
		DelayADC0831();
		
	} 
	
	ADCcs=1; 
	return  temp ; 
}