51矩陣按鍵

ID:217724 · 發(fā)表于 2017-7-6 19:43

#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit dula=P2^6;
sbit wela=P2^7;
uchar code table1[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
uchar code table3[]={
0x1e,0x2e,0x4e,0x8e,
0x1d,0x2d,0x4d,0x8d,
0x1b,0x2b,0x4b,0x8b,
0x17,0x27,0x47,0x87};
uchar code table4[]={
0x0e,0x0e,0x0e,0x0e,
0x0d,0x0d,0x0d,0x0d,
0x0b,0x0b,0x0b,0x0b,
0x07,0x07,0x07,0x07};
void delayms(uint);
uchar key,num1,temp;
void main()
{
P0=0x00;
wela=0;
dula=0;
while(1)
{
for(num1=0;num1<16;num1++)
{
P0=table1[key]; //數(shù)碼
dula=1;
dula=0;
P3=table3[num1];
temp=P3;
if(temp==table4[num1])
{
delayms(10);
temp=P3;
if(temp==table4[num1])
key=num1;
}
while(temp==table4[num1])
{
temp=P3;
}
}
}
}
void delayms(uint xms)
{
uint i,j;
for(i=xms;i>0;i--)
for(j=125;j>0;j--);
}

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