標題:
單片機數(shù)碼管秒表程序
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作者:
v如此富有覅
時間:
2022-4-18 13:24
標題:
單片機數(shù)碼管秒表程序
制作一個數(shù)碼管秒表,用兩個led數(shù)碼管顯示,最小計時單位為100ms,范圍為0.1-9.9s,按下第一個功能鍵后開始計時,第二次按下時停止
#include <reg51.h>
unsigned char code discode1[]={0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef};
unsigned char code discode2[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
unsigned char timer=0;
unsigned char second;
unsigned char key=0;
main()
{
TMOD=0x01;
ET0=1;
EA=1;
second=0;
P0=discode1[second/10];
P2=discode2[second%10];
while(1)
{
if((P3&0x01)==0x00)
{
key++;
switch(key)
{
case 1:
TH0=0xee;
TL0=0x00;
TR0=1;
break;
case 2:
TR0=0;
break;
case 3:
key=0;
second=0;
P0=discode1[second/10];
P2=discode2[second%10];
break;
}
while((P3&0x01)==0x00);
}
}
}
void int_T0() interrupt 1 using 0
{
TR0=0;
TH0=0xee;
TL0=0X00;
timer++;
if(timer==20)
{
timer=0;
second++;
P0=discode1[second/10];
P2=discode2[second%10];
}
if(second==99)
{
TR0=0;
second=0;
key=2;
}
else
{
TR0=1;
}
}
附件里面是仿真圖,不含代碼(自行生成hex文件)僅供參考,請自行測試,如有錯誤請告知:
制作LED數(shù)碼管秒表.zip
(40.65 KB, 下載次數(shù): 13)
2022-4-18 13:23 上傳
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