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这是我编的独立键盘程序,有加1的,有减1的,停止的,
#include
#define uchar unsigned char
#define uint unsigned int
sbit key1=P3^4;
sbit key2=P3^5;
sbit key3=P3^6;
sbit key4=P3^7;
sbit dula=P2^6;
sbit wela=P2^7;
void delay(uint z);
uchar code table[]={0x3f,
0x06,0x5b,0x4f,0x66,0x6d,
0x7d,0x07,0x7f,0x6f,0x77,
0x7c,0x39,0x5e,0x79,0x71};
uchar num0,num;
/*显示函数*/
void display(uchar numdis)
{
uchar shi,ge;
shi=numdis/10;
ge=numdis%10;
dula=1;
P0=table[shi];
dula=0;
P0=0xff;
wela=1;
P0=0xfe;
wela=0;
delay(5);
dula=1;
P0=table[ge];
dula=0;
P0=0xff;
wela=1;
P0=0xfd;
wela=0;
delay(5);
}
/*延时函数*/
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=112;y>0;y--);
}
/*初始化函数*/
void init()
{
TMOD=0x01;
TH0=(65536-45872)/256;
TL0=(65536-45872)%256;
EA=1;//开总中断
ET0=1;//开定时器0中断
}
/*键盘函数*/
void keyscan()
{
if(key1==0)
{
delay(10);
if(key1==0)
{
num++;
if(num==99)
num=0;
while(!key1);
}
}
if(key2==0)
{
delay(10);
if(key2==0)
{
if(num==0)
num=99;
num--;
while(!key2);
}
}
if(key3==0)
{
delay(10);
if(key3==0)
{
num=0;
while(!key3);
}
}
if(key4==0)
{
delay(10);
if(key4==0)
{
while(!key4);
TR0=~TR0;
}
}
}
void main()
{
init();
while(1)
{
keyscan();
display(num);
}
}
void T0_time() interrupt 1
{
TH0=(65536-45872)/256;
TL0=(65536-45872)%256;
num0++;
if(num0==20)
{
num0=0;
num++;
if(num==60)
num=0;
}
} |
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