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標題: 秒表開發程序 [打印本頁]

作者: 張成程 時間: 2015-10-9 17:29
標題: 秒表開發程序
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar code du[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};  //0-9
uchar code se[]={0x40,0x79,0x24,0x30,0x19,0x12,0x02,0x78,0x00,0x10};  //0.-9.
char Min,Sec; //定義十位和個位
void delayms(uint z) //延時1秒鐘
{
  uint x;
  for(;z>0;z--)
for(x=110; x>0; x--);
}
void Time_Init()    //時間初始化
{
EA = 1;
  TMOD |= 0X01;
  TH0 = (65536 - 2000)/256;
  TL0 = (65536 - 2000)%256;
  ET0 = 1;
}
void display()    //顯示程序
{
P2 = 0xfe;
  P0 = du[Sec];
  delayms(2);
  P0 = 0xff;

  P2 = 0xfd;
  P0 = se[Min];
  delayms(2);
  P0 = 0xff;


}
void keyboradscan()
{
uchar key;
static uchar key_on = 0;
key = P3 & 0x0f;
if(key != 0x0f)
  {
if(key_on ==0)
   {
   key_on = 1;
   switch (key)
{
   case 0x0e:TR0 = 1;break;
   case 0x0d:TR0 = 0;break;
   case 0x0b:TR0 = 0;Sec = 0;Min = 0;break;
}
  }
  }
  else
  {
   key_on = 0;
  }
}
void main()
{
Time_Init();       //時間初始化
while(1)
  {
display();       //顯示掃描
keyboradscan();    //鍵盤掃描
if(Min == 9 && Sec == 9)
{
   TR0  = 0;
   Min = 9;Sec = 9;
}
  }
}
void Timer0() interrupt 1
{
static int count;
TH0 = (65536 - 2000)/256;
TL0 = (65536 - 2000)%256;
count++;
if(count >= 50)    //1毫秒加1
{
count = 0;
Sec++;
   if(Sec > 9)    //加到9后
{
   Sec = 0;       //毫秒清零
   Min++;          //秒加1
   if(Min > 9)
   Min = 0;    //秒清零
}
}
}

作者: admin 時間: 2015-10-9 17:59
謝謝分享，能共享一下電路圖嗎

作者: 用戶2111157 時間: 2015-10-10 22:14
感謝分享，研究一下

作者: sklh 時間: 2016-5-13 17:16
有電路嗎？

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