?? 按鍵發(fā)送.txt
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#include<reg52.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
#define shuju P0
#define bus P1
//#define lcdbus P3
void delayms(int i)
{
int j;
for(j=0;j<i;j++)
{;}
}
void chushi()
{
TMOD=0x20;
SCON=0x50;
TH1=0xfA;
TL1=0xfA;
PCON=0x80;
TR1=1;
EA=1;
ES=0;
RI=0;
TI=0;
}
void display(uchar i)
{
SBUF=i;
while(!TI);
TI=0;
}
void jianpan()
{
uchar a;
uchar k;
bus=0xff;
bus=0xef; //掃描第一行
delayms(6000);
a=bus;
a=a&0x0f;
if(a!=0x0f)
{
delayms(2000);
if(a!=0x0f)
{
switch(a)
{
case 0x0e:
k=0x01;
break;
case 0x0d:
k=0x02;
break;
case 0x0b:
k=0x03;
break;
case 0x07:
k=0x04;
break;
}
display(k);
while(a!=0x0f)
{
bus=0x0f;
delayms(2000);
a=bus;
//a=a&0x0f;
}
}
}
bus=0xdf; //掃描第二行
// lcdbus=0xff;
delayms(6000);
a=bus;
a=a&0x0f;
if(a!=0x0f)
{
delayms(2000);
if(a!=0x0f)
{
switch(a)
{
case 0x0e:
k=0x05;
// shuju=0x05;
break;
case 0x0d:
k=0x06;
// shuju=0x06;
break;
case 0x0b:
k=0x07;
shuju=0x07;
break;
case 0x07:
k=0x08;
// shuju=0x08;
break;
}
display(k);
while(a!=0x0f)
{
bus=0x0f;
delayms(2000);
a=bus;
}
}
}
bus=0xbf; //掃描第3行
delayms(6000);
a=bus;
a=a&0x0f;
if(a!=0x0f)
{
delayms(2000);
if(a!=0x0f)
{
switch(a)
{
case 0x0e:
k=0x09;
break;
case 0x0d:
k=0x0a;
break;
case 0x0b:
k=0x0b;
//k=58;
// jia();
break;
case 0x07:
k=0x0c;
// jian();
break;
}
display(k);
while(a!=0x0f)
{
bus=0x0f;
delayms(2000);
a=bus;
}
}
}
bus=0x7f; //掃描第4行
delayms(6000);
a=bus;
a=a&0x0f;
if(a!=0x0f)
{
delayms(2000);
if(a!=0x0f)
{
switch(a)
{
case 0x0e:
k=0x0d;
// jia();
// shuju=0x13;
break;
case 0x0d:
k=0x0e;
//jian();
// shuju=0x14;
break;
case 0x0b:
k=0x0f;
//cheng();
// shuju=0x50;
break;
case 0x07:
k=0x00;
//chu();
//shuju=0x16;
break;
}
display(k);
//a=lcdbus;
// a=a&0x0f;
while(a!=0x0f)
{
bus=0x0f;
delayms(2000);
a=bus;
}
}
}
}
void main()
{
chushi();
while(1)
{
jianpan();
}
}
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