#include "reg51.h"
#define char unsigned char
char code dis_7[12]={//我的實驗板引腳連接不規則，所以段碼也不一樣
0x21, //"0"
0xEB, //"1"
0x85, //"2"
0x83, //"3"
0x4B, //"4"
0x13, //"5"
0x11, //"6"
0xAB, //"7"
0x01, //"8"
0x03, //"9"
0xFF, //""0a
0xDF, //"-"0b
};//{0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff,0xbf};
//共陽極LED數碼管"0~9","滅"和"-"的字段碼
char code scan_con[8]={0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f,0x7f};//{0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};
//位選擇碼
char data dis[8]={0x00,0x00,0x0b,0x00,0x00,0x0b,0x00,0x00};
//顯示緩沖區,時、分、秒初始為0,0x0b為"-"的編碼
char data timedata[3]={0,8,11};
//分別為秒、分和小時的值
char data ms50=0,con=0,con1=0,con2=0;
//char sec,min,hours;
sbit key0=P1^6;
sbit key1=P1^5;
sbit key2=P1^4;
sbit beep=P1^7;
//1ms延時函數
delay1ms(int t)
{
int i,j;
for (i=0;i<t;i++)
for (j=0;j<120;j++)
;
}
//按鍵處理函數
keyscan()
{
EA=0;
if (key0==0)
{
beep=0;
delay1ms(10);
beep=1;
while (key0==0);
con++;
TR0=0;
ET0=0;
if (con>=3)
{
con=0;
TR0=1;
ET0=1;}
}
if (con!=0)
{
if (key1==0)
{
beep=0;
delay1ms(10);
beep=1;
while (key1==0);
timedata[con]++;
if (con==2) con1=24;else con1=60;
if (timedata[con]>=con1)
{timedata[con]=0;}
}
}
if (con!=0)
{
if (key2==0)
{
beep=0;
delay1ms(10);
beep=1;
while (key2==0);
timedata[con]--;
if (con==2) con2=23;else con2=59;
if (timedata[con]<=0)
{timedata[con]=con2;}
}
}
EA=1;
}
//數碼管顯示函數
scan()
{
char k;
dis[0]=timedata[0]%10;dis[1]=timedata[0]/10;
dis[3]=timedata[1]%10;dis[4]=timedata[1]/10;
dis[6]=timedata[2]%10;dis[7]=timedata[2]/10;
for (k=0;k<8;k++)
{
P0=dis_7[dis[k]];P2=scan_con[k];delay1ms(1);P2=0x00;
}
}
//主函數
main()
{
TH0=0x3c;
TL0=0xb0;
TMOD=0x01;
ET0=1;
TR0=1;
EA=1;
while (1)
{
scan();
keyscan();
}
}
//定時器/計數器T0中斷服務函數
void time_intt0(void) interrupt 1
{
ET0=0;
TR0=0;
TH0=0x3c;
TL0=0xb0;
TR0=1;
ms50++;
if (ms50==10)//我是用6Mhz晶振
{
ms50=0x00;timedata[0]++;
if (timedata[0]==60)
{
timedata[0]=0;timedata[1]++;
if (timedata[1]==60)
{
timedata[1]=0;timedata[2]++;
if (timedata[2]==24)
{
timedata[2]=0;
}
}
}
}
ET0=1;
}經測試顯示正常 |
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