#include <reg52.H>
#include "Typedef.H"
#include "UserDef.H"
#include "TLC0832.H"

/*  端口定義 */
sbit adccs = P3^6 ;
sbit adcclk = P1^5 ;
sbit adcdi = P1^6 ;
sbit adcdo = P1^7 ;

/***************************************
		 延時(shí)函數(shù)
****************************************/
static void delay1(INT8U x)   
 	{   
    INT8U i; 
    for(i=0;i<x;i++); 
 	}

/***************************************
	 時(shí)鐘信號(hào)函數(shù)
****************************************/
static void adcck(void)	
 	{ 
    adcclk=1; delay1(2); 
    adcclk=0; delay1(2); 
 	}

/***************************************
	AD轉(zhuǎn)換函數(shù)
****************************************/
INT8U TLC0832(void)
	{
	INT8U i;
    INT8U ch = 0;

	adccs=0;           /* 片選信號(hào)為0                       */
	adcck(); adcdi=1;  /* 啟動(dòng)A/D信號(hào)                       */
	adcck(); adcdi=1;  /* SGL=1                             */
	adcck(); adcdi=0;  /* ODD=0,單極性，選中通道0           */
	adcck();           /* 延時(shí)一個(gè)時(shí)鐘期，產(chǎn)生一個(gè)時(shí)鐘信號(hào)  */
	for (;adcdo==1;) adcck();
	for (i=0; i<8; i++) 
		{
		adcck();  /*產(chǎn)生時(shí)鐘信號(hào)*/
        ch=(ch<<1)|adcdo;  /*接收TLC0832輸出的轉(zhuǎn)換結(jié)果*/
        }
	adccs=1;           /*片選信號(hào)置1*/
	return(ch);
	}