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標題: 想實現52單片機控制兩個超聲波測距然后數碼管顯示距離（2~9）不過數碼管只有一個亮 [打印本頁]

作者: 1888888 時間: 2022-3-14 20:00
標題: 想實現52單片機控制兩個超聲波測距然后數碼管顯示距離（2~9）不過數碼管只有一個亮
#include <REGX52.H>
#include <intrins.h>
#include <stdio.h>
#define uchar unsigned char
#define uint  unsigned int
sbit SH_CP1 = P0^1;
sbit DS = P0^0;
sbit ST_CP1 = P0^2;
int distL,distR;
unsigned char code table[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};
sbit TrigL = P2^4;             // 超聲波模塊的Trig管腳
sbit EchoL = P2^5;             // 超聲波模塊的Echo管腳
sbit TrigR = P2^6;             // 超聲波模塊的Trig管腳
sbit EchoR = P2^7;             // 超聲波模塊的Echo管腳
//============MAIN===============================
void Delay(unsigned int xms)  //延時
{
      unsigned char i, j;
      while(xms--)
      {
            i = 2;
            j = 199;
            do
            {
                     while (--j);
            } while (--i);
      }
}
void send_data_74hc595(uint data_74hc595)                   //傳送數據給74hc595
{
      uchar a;
      for(a = 0; a < 8; ++a)
      {
            DS = (data_74hc595 << a) & 0x80;                   //從高位開始傳輸
            SH_CP1 = 0;

            _nop_();
            _nop_();
            SH_CP1 = 1;

      }
}

void show_74hc595()                                        //數據顯示
{
      ST_CP1 = 0;

      _nop_();
      _nop_();
      ST_CP1 = 1;

}
void Nixie()
{
         switch(distR)
               {
                     case 1:send_data_74hc595(table[1]);show_74hc595();break;
                     case 2:send_data_74hc595(table[2]);show_74hc595();break;
                     case 3:send_data_74hc595(table[3]);show_74hc595();break;
                     case 4:send_data_74hc595(table[4]);show_74hc595();break;
                     case 5:send_data_74hc595(table[5]);show_74hc595();break;
                     case 6:send_data_74hc595(table[6]);show_74hc595();break;
                     case 7:send_data_74hc595(table[7]);show_74hc595();break;
                     case 8:send_data_74hc595(table[8]);show_74hc595();break;
                     case 9:send_data_74hc595(table[9]);show_74hc595();break;

               }

               switch(distL)
               {
                     case 1:send_data_74hc595(table[1]);show_74hc595();break;
                     case 2:send_data_74hc595(table[2]);show_74hc595();break;
                     case 3:send_data_74hc595(table[3]);show_74hc595();break;
                     case 4:send_data_74hc595(table[4]);show_74hc595();break;
                     case 5:send_data_74hc595(table[5]);show_74hc595();break;
                     case 6:send_data_74hc595(table[6]);show_74hc595();break;
                     case 7:send_data_74hc595(table[7]);show_74hc595();break;
                     case 8:send_data_74hc595(table[8]);show_74hc595();break;
                     case 9:send_data_74hc595(table[9]);show_74hc595();break;


               }       }
//模塊程序
uint GetDistanceL(void)
{
      uint s;
  TH0 = 0;
      TL0 = 0;
  TrigL=1;                                        //800MS  啟動一次模塊
      Delay(0.001);
  TrigL=0;

  while(!EchoL);             //當RX為零時等待
      TR0=1;                         //開啟計數
  while(EchoL);                      //當RX為1計數并等待
      TR0=0;                               //關閉計數
  //timeL=TH0*256+TL0;

      // timeL *= 12/11.0592;
  //s=(timeL*1.7)/100;    //算出來是CM
      s=((TH0*256+TL0)*0.034)/2;
      return s;
}

uint GetDistanceR(void)
{
      uint s;
      TH0 = 0;
      TL0 = 0;
  TrigR=1;                                        //800MS  啟動一次模塊
      Delay(0.001);
  TrigR=0;

  while(!EchoR);             //當RX為零時等待
      TR0=1;                         //開啟計數
  while(EchoR);                      //當RX為1計數并等待
      TR0=0;                               //關閉計數
      s=((TH0*256+TL0)*0.034)/2;
      return s;

}

void main()
{
                              TMOD = 0x02;
                              ET0=0;
                              EA =1;                                              // 選擇定時器0，并且確定是工作方式1（為了超聲波模塊測量距離計時用的）
      TrigL=0;                                                             // 初始化觸發引腳為低電平
      TrigR=0;

      while(1)
      {
      //===========Ultrasonic measurement===========
            //left
               distL = GetDistanceL();
            //right
               distR = GetDistanceR();
                     Nixie();

      }//end of while

}//end of main

51hei截圖20220314195243.png (65.76 KB, 下載次數: 43)

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