ad0809.c

AD采样实验

/**************************************************************/
/*    文件名: AD0809.c                                        */
/*    功能描述: AD采样实验，结果通过串口送PC显示(脱机运行)    */
/*              结果送内部数据区30H，共16个(SoftIce调试)      */
/**************************************************************/

#include <reg51.h>
#include "Absacc.h"
//#include "stdio.h"

#define STARTAD    XBYTE[0x7F00]
#define ADRESULT   XBYTE[0x7F08]

sbit ADBUSY  = P3^3;

//unsigned char data a[16];

unsigned char AD0809(void)
{
	unsigned char result;
	STARTAD = 0;			// 启动AD
	while(ADBUSY == 1);		// 等待转换结束
	result = ADRESULT;
	return result;
}


//**** 串口初始化 ****//
/*void init_serial(void)
{
	SCON = 0x52;
	TMOD = 0x20;
	PCON = 0x80;
	ES = 0;
	TH1 = 0xFD;
	TR1 = 1;
}*/

void main(void)
{
	//unsigned char result;
	unsigned int i, j;
	//init_serial();
	for(j=0; j<16; j++)
	{
		//result = AD0809();
		//a[j] = AD0809();
		DBYTE[0x30 + j] = AD0809();
		//printf("AD0809_IN0_Result:  %bx\r", result);
		for(i=0; i<20; i++);
	}
	while(1);
}