刚做的交通灯的程序出现了问题不知道怎么改，求指点

ID:583138 · 发表于 2019-7-13 08:43

#include<reg52.h>
sbit Key1 = P3^3;
unsigned char code LedChar[] = {  //数码管显示字符转换表
0x3F, 0x06, 0x5B, 0x4F, 0x66, 0x6D, 0x7D, 0x07,
0x7F, 0x6F,
};
unsigned char code LedBuff[] = {
0xFF,0xFF
};
unsigned char cnt = 0;
unsigned char sec = 0;
unsigned char cnt200 = 0;
unsigned int cnt1000 = 0;
void LinghtenLed();
void ShowLed();
void delay();
unsigned char i;
unsigned char buf[2]; //中间转换缓冲区
void time()
{
TMOD = 0X01;
TH0 = 0xFC;
TL0 = 0x67;
EA = 1;
ET0 = 1;
TR0 = 1;
}
void main()
{
unsigned char buf[2]; //中间转换缓冲区
  static unsigned int j;
  while (1)
{
if(Key1 == 0)
{
EA = 0;
for(j=0;j<300;j++);
}
else
{
      if (cnt200 >= 200)  //0.2s刷新
      {
         cnt200 = 0;
         LinghtenLed();
      }
      if (cnt1000 >= 1000)  //1s刷新
      {
         cnt1000 = 0;
   sec++;
   P3 = ~0x03;
         ShowLed();
      }
   for (i=1; i>=0; i--)  //从最高为开始，遇到0不显示，遇到非0退出循环
{
      if (buf[i] == 0)
         LedBuff[i] = 0x00;
      else
         break;
}
for ( ; i>=0; i--)
   {
      LedBuff[i] = LedChar[buf[i]];
}
}
}
}
void LinghtenLed()
{
static unsigned char flag = 0;
if(flag==0)
{
  P0=0x24;
  ShowLed();
  if(sec == 25)
  {

sec = 0;
flag = 1;
  }
}
  else if(flag == 1)
  {
P0=0x90;
ShowLed();
if(sec == 20)
{
flag = 2;
sec = 0;
}
  }
  else if(flag == 2)
  {
P0 = 0x48;
ShowLed();
if(sec == 5)
{
flag = 3;
sec = 0;
}

  }
  else
  {
P0 = 0xFF;
ShowLed();
delay();
P0 = ~P0;
flag = 0;
  }
}
void ShowLed()
{
char i;

static unsigned long min = 0;  //记录经过的秒数

min++;
buf[0]=min%10;
  buf[1]=min/10%10;

}
void delay()
{
static unsigned int j;
for(j=0;j<2000;j++);
j=0;
}
/* 定时器0中断服务函数 */
void InterruptTimer0() interrupt 1
{
static unsigned char i = 0; //动态扫描的索引
TH0 = 0xFC;  //重新加载初值
TL0 = 0x67;
cnt200++;
cnt1000++;
P2 = 0x00;
switch (i)
{
      case 0:  i++; P2=LedBuff[0]; break;
      case 1:  i++; P2=LedBuff[1]; break;
      default: break;
}
}