本帖最后由 用户 于 2014-12-10 16:08 编辑
谁能帮我看看为什么不行。
#include "reg52.h"
sbit dula=P2^6;
sbit wela=P2^7;
#define uint unsigned int
#define uchar unsigned char
uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
uchar num,temp;
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void main()
{
dula=1;
P0=0xff;
dula=0;
wela=1;
P0=0x00;
wela=0;
while(1)
{
P3=0xef;
temp=P3;
temp=temp&0x0f;
while(temp!=0x0f)
{
delay(5);
temp=P3;
temp=temp&0x0f;
while(temp!=0x0f)
{
temp=P3;
switch(temp)
{
case 0xee:num=0; break;
case 0xed:num=1; break;
case 0xeb:num=2; break;
case 0xe7:num=3; break;
}
//while(
}
dula=1;
P0=table[num];
dula=0;
}
}
}
|
