我89C52的P0口怎么一点反应都没有呢？
#define _TEST_C_
#include "reg52.h"
#include "stdlib.h"
#include "absacc.h"
#include "intrins.h"
#include "test.h"
#define uchar unsigned char
#define uint unsigned int
#define COM8251 XBYTE[0x8601]
#define DAT8251 XBYTE[0x8600]
sbit flag1_8251 = ACC^0;
sbit flag2_8251 = ACC^1;
uchar data_temp[10]={0xAA,10,22,32,0,0};
void initmcu(void);
void Trans8251(void);
void main(void)
{
initmcu();
Trans8251();
}
void initmcu(void)
{
TMOD = 0x22; //9600波特11.0592MHz,方式2
TL1 = 0XFD; TH1 = 0XFD;SCON = 0X50;
TR1 = 1; TR0=1; ES = 1; EA = 1;
}
void Trans8251(void)
{
uchar i;
COM8251 = 0x00;
COM8251 = 0x00;
COM8251 = 0x00;
COM8251 = 0x40;
COM8251 = 0x6d;
COM8251 = 0x37;
for(;;)
{
for(i=0;i<4;i++)
do
ACC = COM8251;
while(flag1_8251==0);
DAT8251 = data_temp;
}
}
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