简单的交通灯，为什么进不了中断

ID:284681 · 发表于 2018-2-21 22:49

#include <reg52.h>

#define u8 unsigned int
#define u16 unsigned char
#define GPIO_dig P0
#define GPIO_traffic P1

sbit LSA=P2^2;
sbit LSB=P2^3;
sbit LSC=P2^4;

sbit RED_1=P1^0;
sbit GREEN_1=P1^1;
sbit RED_2=P1^2;
sbit YELLOW_2=P1^3;
sbit GREEN_2=P1^4;
sbit RED_3=P1^5;
sbit YELLOW_3=P1^6;
sbit GREEN_3=P1^7;
sbit RED_4=P3^1;
sbit GREEN_4=P3^0;

u8 code smgduan[17]=
{0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};

u8 DisplayData[8];
u8 second;

void delay(u16 z)
{
while(z--);
}

void DigDisplay()
{
u8 i;
for(i=0; i<8; i++)
{
      switch(i)
      {
         case(0):
            LSA=0;LSB=0;LSC=0; break;//显示第0位
         case(1):
            LSA=1;LSB=0;LSC=0; break;//显示第1位
         case(2):
            LSA=0;LSB=1;LSC=0; break;//显示第2位
         case(3):
            LSA=1;LSB=1;LSC=0; break;//显示第3位
         case(4):
            LSA=0;LSB=0;LSC=1; break;//显示第4位
         case(5):
            LSA=1;LSB=0;LSC=1; break;//显示第5位
         case(6):
            LSA=0;LSB=1;LSC=1; break;//显示第6位
         case(7):
            LSA=1;LSB=1;LSC=1; break;//显示第7位
      }
      GPIO_dig=DisplayData[i];
      delay(100);
      GPIO_dig=0x00;
}
}

void Time0Init()
{
TMOD|=0x01;
TH0=0xFC;
TL0=0x18;
EA=1;
ET0=1;
TR0=1;
}

void main()
{
second=1;
Time0Init();
while(1)
{
      if(second==70)
      {
         second=1;
      }
      if(second < 31)
      {
         DisplayData[0] = 0x00;
         DisplayData[1] = 0x00;
         DisplayData[2] = smgduan[(30 - second) % 100 / 10];
         DisplayData[3] = smgduan[(30 - second) %10];
         DisplayData[4] = 0x00;
         DisplayData[5] = 0x00;
         DisplayData[6] = DisplayData[2];
         DisplayData[7] = DisplayData[3];
         DigDisplay();

         GPIO_traffic=0xff;
         RED_4=1;
         GREEN_4=1;

         GREEN_2=0;
         GREEN_1=0;
         RED_3=0;
         RED_4=0;
      }

      else if(second < 36)
      {
         DisplayData[0] = 0x00;
         DisplayData[1] = 0x00;
         DisplayData[2] = smgduan[(35 - second) % 100 / 10];
         DisplayData[3] = smgduan[(35 - second) %10];
         DisplayData[4] = 0x00;
         DisplayData[5] = 0x00;
         DisplayData[6] = DisplayData[2];
         DisplayData[7] = DisplayData[3];
         DigDisplay();

         GPIO_traffic=0xff;
         RED_4=1;
         GREEN_4=1;

         GREEN_1=0;
         YELLOW_2=0;
         YELLOW_3=0;
         RED_4=0;
      }

      else if(second < 66)
      {
         DisplayData[0] = 0x00;
         DisplayData[1] = 0x00;
         DisplayData[2] = smgduan[(65 - second) % 100 / 10];
         DisplayData[3] = smgduan[(65 - second) %10];
         DisplayData[4] = 0x00;
         DisplayData[5] = 0x00;
         DisplayData[6] = DisplayData[2];
         DisplayData[7] = DisplayData[3];
         DigDisplay();

         GPIO_traffic=0xff;
         RED_4=1;
         GREEN_4=1;

         RED_1=0;
         RED_2=0;
         GREEN_3=0;
         GREEN_4=0;
      }

      else
      {
         DisplayData[0] = 0x00;
         DisplayData[1] = 0x00;
         DisplayData[2] = smgduan[(70 - second) % 100 / 10];
         DisplayData[3] = smgduan[(70 - second) %10];
         DisplayData[4] = 0x00;
         DisplayData[5] = 0x00;
         DisplayData[6] = DisplayData[2];
         DisplayData[7] = DisplayData[3];
         DigDisplay();

         GPIO_traffic=0xff;
         RED_4=1;
         GREEN_4=1;

         YELLOW_2=0;
         RED_1=0;
         YELLOW_3=0;
         GREEN_4=0;
      }
}
}

void Time0() interrupt 1
{
static u16 a;
TH0=0xFC;
TL0=0x18;
a++;
if(a == 1000)
{
      a=0;
      second ++;
}
}

ID:284681 · 发表于 2018-2-21 22:50

数码管不走路

ID:284696 · 发表于 2018-2-22 08:45

要开中断的

ID:231046 · 发表于 2018-2-22 08:46

void main()
{
second=1;
// Time0Init();
不用调用

ID:213173 · 发表于 2018-2-22 09:48

因为你使用的数据类型与宏定义数据类型不一致，char是8位，int是16位.
#define u8 unsigned int
#define u16 unsigned char
void Time0() interrupt 1
{
static u16 a;
TH0=0xFC;
TL0=0x18;
a++;
if(a == 1000)  //超过255
{
      a=0;
      second ++;
}
}

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