只是想测试下按键
#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar eo;
uchar key;
uchar input;
sbit wdi=P1^7;
sbit led1=P1^4;
sbit led2=P1^5;
void main ()
{
//P1=0x0F;
P1=0X00;
eo=P1&0x08;
while(1)
{
if(eo==0X08)
{
input=P1&0x07;
switch(input)
{
case 0: key=8;led1=1;break;
case 1: key=7;led1=0;break;
case 2: key=6;led1=1;break;
case 3: key=5;led1=0;break;
case 4: key=4;led2=1;break;
case 5: key=3;led2=0;break;
case 6: key=2;led2=1;break;
case 7: key=1;led2=0;break;
default :break;
}
}
wdi=!wdi;
}
}
单片机为AT89C55WD
现在是按键无反应
请大侠指教 |
|
楼主
