现在的问题是我的8251单独调试时,用中断完全正确,但是当加上了adc0816时,
用中断就不行了,采集不到数值,ad[0]仍为原来赋的初值.但是不用中断,把原来
中断中的内容写入main()函数中却可以正确采集,为什么?百思不得其解,请大虾们指导!
#define _TEST_C_
#include "reg52.h"
#include "stdlib.h"
#include "absacc.h"
#include "intrins.h"
#include "test.h"
#include "math.h"
#define uchar unsigned char
#define uint unsigned int
#define COM8251 XBYTE[0x8701]
#define DAT8251 XBYTE[0x8700]
#define IN0 XBYTE[0x8000]
uchar data data_temp[6]={0x52,0x53,0x54,0x55,0x00,0x58};
uchar temp[6]={52,0x53,0x54,0x55,0x00,0x58};
uchar k;
uchar data a;
static uchar idata ad[16]={0x52,0x53,0x54,0x55,0x00,0x58,0x52,0x53,0x54,0x55,0x00,0x58,0x52,0x53,0x54,0x55};
void initmcu(void);
void wait(uchar p,uchar q);
void init8251();
void ad0816(uchar idata *x);
void Trans8251(void) interrupt 1 using 1
{
TH0 = 0XFF;
TL0 = 0XFF;
do
{ ad0816(ad);//采集信号
DAT8251=ad[0];//得到第0通道的转换值
}while((COM8251&0x01)==0);
for(k=0;k<6;k++)
{
while((COM8251&0x02)==0)
{
temp[k]=DAT8251;//串口调试助手不能写成0x54样式，否则收不到
}
}
}
void main(void)
{
EA = 0;
initmcu();
EA = 1;
init8251();
}
void init8251()
{
//wait(11,82);//8251工作速度慢，每送一个控制字，等待一会儿延时2ms
COM8251 = 0x00;
DAT8251 = 0x00;
DAT8251 = 0x00;
COM8251 = 0x40;//以上为8251复位部分
wait(11,82);
COM8251 = 0x4e;//9600baud,1停止位，无校验，8位数据，X16
wait(11,82);
COM8251 = 0x35;
wait(11,82);
}
void initmcu(void)
{
TMOD = 0x06; //9600波特11.0592MHz,方式2
TL0 = 0XFF; TH0 = 0XFF;
IP = 0x02; ET0 = 1;TR0 = 1;
}
//adc0816 function...........................................................//
void ad0816(uchar idata *x)
{
uchar i;
uchar xdata *ad_adr;
ad_adr=&IN0;
for(i=0;i<16;i++)
{
*ad_adr=0; //启动转换从0通道开始
wait(2,28);
x=*ad_adr;
ad_adr++;
}
}
void wait(uchar p,uchar q)
{
uchar i,j; //(2*j+3)*i+4
for (i=p;i>0;i--)
for (j=q;j>0;j--);
}
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