数码管的动态显示中断

发表于 2022-1-8 21:01:01

本帖最后由房一鹏于 2022-1-8 22:28 编辑

数码管的动态显示if语句
#include<reg52.h>

sbit ENLED = P1^1;
sbit P20 = P2^0;
sbit P21 = P2^1;
sbit P22 = P2^2;

unsigned char ledchar[]={
      0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,
      0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E,
};
unsigned char ledbuff[]={
      0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
};

void main ()
{
      unsigned int cnt=0;    //最大值为1000
      unsigned long sec=0;    //最大值为999999（注：是数码管的最大显示数字）
      unsigned char i=0;       //最大值为5

      ENLED=0;
      TMOD=0x01;
      TH0=0xF5;
      TL0=0x55;
      TR0=1;

      while(1)
      {
            if(TF0==1)
            {
                     TF0=0;
                     TH0=0xF5;
         TL0=0x55;
                     cnt++;
                     if(cnt>=1000)
                     {
                              cnt=0;
                              sec++;
                              ledbuff[0]=ledchar[sec%10];
                              ledbuff[1]=ledchar[sec/10%10];
                              ledbuff[2]=ledchar[sec/100%10];
                              ledbuff[3]=ledchar[sec/1000%10];
                              ledbuff[4]=ledchar[sec/10000%10];
                              ledbuff[5]=ledchar[sec/100000%10];
                     }
                     P0=0xFF;
                     if(i==0)
                     {P20=1; P21=0; P22=1;i++; P0=ledbuff[0];}
                     else if(i==1)
                     {P20=0; P21=0; P22=1;i++; P0=ledbuff[1];}
                     else if(i==2)
                     {P20=1; P21=1; P22=0;i++; P0=ledbuff[2];}
                     else if(i==3)
                     {P20=0; P21=1; P22=0;i++; P0=ledbuff[3];}
                     else if(i==4)
                     {P20=1; P21=0; P22=0;i++; P0=ledbuff[4];}
                     else if(i==5)
                     {P20=0; P21=0; P22=0;i=0; P0=ledbuff[5];}
            }
      }
}

switch语句
#include<reg52.h>

sbit ENLED = P1^1;
sbit P20 = P2^0;
sbit P21 = P2^1;
sbit P22 = P2^2;

unsigned char ledchar[]={
      0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,
      0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E,
};
unsigned char ledbuff[]={
      0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
};

void main ()
{
      unsigned int cnt=0;
      unsigned long sec=0;
      unsigned char i=0;

      ENLED=0;
      TMOD=0x01;
      TH0=0xF5;
      TL0=0x55; //x*12/32768000=0.001 初值=65536-x
      TR0=1;

      while(1)
      {
            if(TF0==1)
            {
                     TF0=0;
                     TH0=0xF5;
         TL0=0x55;
                     cnt++;
                     if(cnt>=1000)
                     {
                              cnt=0;
                              sec++;
                              ledbuff[0]=ledchar[sec%10];
                              ledbuff[1]=ledchar[sec/10%10];
                              ledbuff[2]=ledchar[sec/100%10];
                              ledbuff[3]=ledchar[sec/1000%10];
                              ledbuff[4]=ledchar[sec/10000%10];
                              ledbuff[5]=ledchar[sec/100000%10];
                     }
                     switch(i)
                     {
                              case 0:
                        P20=1; P21=0; P22=1; i++; P0=ledbuff[0];break;
                              case 1:
                        P20=0; P21=0; P22=1; i++; P0=ledbuff[1];break;
                              case 2:
                        P20=1; P21=1; P22=0; i++; P0=ledbuff[2];break;
                              case 3:
                        P20=0; P21=1; P22=0; i++; P0=ledbuff[3];break;
                              case 4:
                        P20=1; P21=0; P22=0; i++; P0=ledbuff[4];break;
                              case 5:
                        P20=0; P21=0; P22=0; i=0; P0=ledbuff[5];break;
                              default: break;
               }
            }
      }
}

中断
#include<reg52.h>

sbit ENLED = P1^1;
sbit P20 = P2^0;
sbit P21 = P2^1;
sbit P22 = P2^2;

unsigned char ledchar[]={
      0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,
      0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E,
};
unsigned char ledbuff[]={
      0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
};

unsigned int cnt=0;
unsigned char i=0;
unsigned char flag1s=0;

void main ()
{
      unsigned long sec=0;

      ENLED=0;
      TMOD=0x01;
      TH0=0xF5;
      TL0=0x55; //x*12/32768000=0.001 3õÖμ=65536-x
      TR0=1;
      EA=1;
      ET0=1;

      while(1)
      {
//             if(TF0==1)
//             {
//                      TF0=0;
//                      TH0=0xF5;
//          TL0=0x55; //ÖØ¸33õÖμ
//                      cnt++;
                     if(flag1s==1)
                     {
                              flag1s=0;
                              sec++;
                              ledbuff[0]=ledchar[sec%10];
                              ledbuff[1]=ledchar[sec/10%10];
                              ledbuff[2]=ledchar[sec/100%10];
                              ledbuff[3]=ledchar[sec/1000%10];
                              ledbuff[4]=ledchar[sec/10000%10];
                              ledbuff[5]=ledchar[sec/100000%10];
                     }

      }
}
void interruptTime() interrupt 1
{
         TH0=0xF5;
         TL0=0x55;
         cnt++;
      if(cnt>=1000)
      {
            cnt=0;
            flag1s=1;
      }
      P0=0xFF;
      switch(i)
                     {
                              case 0:
                        P20=1; P21=0; P22=1;i++; P0=ledbuff[0];break;
                              case 1:
                        P20=0; P21=0; P22=1;i++; P0=ledbuff[1];break;
                              case 2:
                        P20=1; P21=1; P22=0;i++; P0=ledbuff[2];break;
                              case 3:
                        P20=0; P21=1; P22=0;i++; P0=ledbuff[3];break;
                              case 4:
                        P20=1; P21=0; P22=0;i++; P0=ledbuff[4];break;
                              case 5:
                        P20=0; P21=0; P22=0;i=0; P0=ledbuff[5];break;
                              default: break;
               }
}

[寒假笔记] 数码管的动态显示 中断

[寒假笔记] 数码管的动态显示中断