超聲波水位控制程序（隨溫度變化）單片機源碼

ID:334622 · 發表于 2018-5-21 09:03

#include <reg52.h>
#define uchar unsigned char
#define uint  unsigned int
#include <intrins.h>

sbit c_send = P3^3;             //超聲波
sbit c_recive = P3^2;
sbit rs=P1^0;
sbit rw=P1^1;
sbit e =P1^2;
uchar code table_num[]="0123456789abcdefg";
uchar flag_en = 1;

uint temperature ;
sbit beep = P1^6; //蜂鳴器
bit flag_300ms ;
long distance;
uint set_gh,set_gl;
bit flag_csb_juli;
uint  flag_time0;
uchar key_can;
uchar menu_1;
uchar a_a;
bit flag_lj_en;
bit flag_lj_3_en;
uchar key_time,key_value;
bit key_500ms  ;
uint shuiwei;
uint sw_jz;
uint code wendu_buchang1[46] = {
331,332,333,333,334,334,335,336,336,337,337,338,339,339,340,341,341,342,342,343,
343,344,345,345,346,346,347,348,348,349,349,350,351,351,352,352,353,354,354,355,
355,356,357,357,358,358       };
sbit dq = P1^5;       //18b20
void delay_uint(uint q)
{
      while(q--);
}

void init_18b20()       //18b20初始化函數//
{
      bit q;
      dq = 1;
      delay_uint(1);
      dq = 0;
      delay_uint(80);
      dq = 1;
      delay_uint(10);
      q = dq;
      delay_uint(20);
      dq = 1;
}

void write_18b20(uchar dat)       /*寫18b20內的數據*/
{
      uchar i;
      for(i=0;i<8;i++)
      {
            dq = 0;
            dq = dat & 0x01;
            delay_uint(5);
            dq = 1;
            dat >>= 1;
      }
}

uchar read_18b20()       /*讀取18b20內的數據*/
{
      uchar i,value;
      for(i=0;i<8;i++)
      {
            dq = 0;
            value >>= 1;
            dq = 1;
            if(dq == 1)
                     value |= 0x80;
            delay_uint(5);
      }
      return value;
}

/*讀取溫度的值 */
uint read_temp()
{
      uint value;
      uchar low;
      init_18b20();
      write_18b20(0xcc);
      write_18b20(0x44);
      delay_uint(50);
      init_18b20();
      write_18b20(0xcc);
      write_18b20(0xbe);
      EA = 0;
      low = read_18b20();
      value = read_18b20();
      EA = 1;
      value <<= 8;
      value |= low;
      value *= 0.0625;
      return value;
}

/***********************1ms延時函數*****************************/
void delay_1ms(uint q)
{
      uint i,j;
      for(i=0;i<q;i++)
            for(j=0;j<120;j++);
}

/* 1602命令函數*/
void write_com(uchar com)
{
      e=0;
      rs=0;
      rw=0;
      P0=com;
      delay_uint(25);
      e=1;
      delay_uint(100);
      e=0;
}

/*1602寫數據函數*/
void write_data(uchar dat)
{
      e=0;
      rs=1;
      rw=0;
      P0=dat;
      delay_uint(25);
      e=1;
      delay_uint(100);
      e=0;
}

/*改變液晶中某位的值*/
void write_string(uchar hang,uchar add,uchar *p)
{
      if(hang==1)
            write_com(0x80+add);
      else
            write_com(0x80+0x40+add);
      while(1)
      {
            if(*p == '\0')  break;
            write_data(*p);
            p++;
      }
}

/*lcd1602上顯示兩位十進制數*/
void write_sfm2(uchar hang,uchar add,uint date)
{
      if(hang==1)
            write_com(0x80+add);
      else
            write_com(0x80+0x40+add);
      write_data(0x30+date/10%10);
      write_data(0x30+date%10);
}

/*lcd1602上顯示兩位十進制數*/
void write_sfm3(uchar hang,uchar add,uint date)
{
      if(hang==1)
            write_com(0x80+add);
      else
            write_com(0x80+0x40+add);
      write_data(0x30+date/100%10);
      write_data('.');
      write_data(0x30+date/10%10);
      write_data(0x30+date%10);
      write_data('m');
}

/*lcd1602上顯示特定的字符*/
void write_zifu(uchar hang,uchar add,uchar date)
{
      if(hang==1)
            write_com(0x80+add);
      else
            write_com(0x80+0x40+add);
      write_data(date);
}

/* init_1602()*/
void init_1602()    //1602初始化
{
      write_com(0x38);
      write_com(0x0c);
      write_com(0x06);
      delay_uint(1000);
      write_string(1,0," Gaodu:  . m    ");
      write_string(2,0,"H:00.0m L:00.0m ");
      write_sfm3(2,2,set_gh);
      write_sfm3(2,10,set_gl);
      write_zifu(1,15,0xdf);
}

/********************獨立按鍵程序*****************/
uchar key_can;

void key()
{
      static uchar key_new;
      key_can = 20;
      P3 |= 0xf0;
      if((P3 & 0xf0) != 0xf0)
      {
            delay_1ms(1);
            if(((P3 & 0xf0) != 0xf0) && (key_new == 1))
            {
                     key_new = 0;
                     switch(P3 & 0xf0)
                     {
                              case 0x70: key_can = 1; break;
                              case 0xb0: key_can = 2; break;
                              case 0xd0: key_can = 3; break;
                     }
            }
            flag_lj_en = 1;
      }
      else
      {
            if(key_new == 0)
            {
                     key_new = 1;
                     flag_lj_en = 0;
                     flag_lj_3_en = 0;
                     key_value = 0;
                     key_time = 0;
            }
      }
}

/****************按鍵處理顯示函數***************/
void key_with()
{
      if(menu_1 == 0)
      {
            if(key_can == 3)
            {
                     flag_en = 0;
                     beep = 1;
            }

      }
      if(key_can == 1)
      {
            menu_1 ++;
            if(menu_1 > 1)
            {
                     menu_1 = 0;
                     init_1602() ;
            }
            if(menu_1 == 3)
            {
                     write_string(1,0,"  juli:  . m    ");
                     write_string(2,0,"Jizhun: m    ");
            }
      }
      if(menu_1 == 1)
      {
            if(key_can == 2)
            {
                     if(flag_lj_3_en == 0)
                              set_gh ++ ;
                     else
                              set_gh += 10 ;
                     if(set_gh > 500)
                              set_gh = 500;
            }
            if(key_can == 3)
            {
                     if(flag_lj_3_en == 0)
                              set_gh -- ;
                     else
                              set_gh -= 10;
                     if(set_gh <= set_gl)
                              set_gh = set_gl + 1;
            }
            write_sfm3(2,2,set_gh);
            write_sfm3(2,10,set_gl);
            write_com(0x80+0x40+2);
            write_com(0x0f);
      }
      if(menu_1 == 2)
      {
            if(key_can == 2)
            {
                     if(flag_lj_3_en == 0)
                              set_gl ++ ;
                     else
                              set_gl += 10 ;
                     if(set_gl > set_gh)
                              set_gl = set_gh - 1;
            }
            if(key_can == 3)
            {
                     if(flag_lj_3_en == 0)
                              set_gl -- ;
                     else
                              set_gl -= 10;
                     if(set_gl <= 10)
                              set_gl = 10 ;
            }
            write_sfm3(2,2,set_gh);
            write_sfm3(2,10,set_gl);
            write_com(0x80+0x40+10);
            write_com(0x0f);
      }
      if(menu_1 == 3)
      {
            if(key_can == 2)
                     sw_jz = distance;
            if(key_can == 3)
                     sw_jz = distance;
            write_sfm3(2,8,sw_jz);
            write_com(0x80+0x40+7);
      }
}

/**************10us延時函數***************/
void delay()
{
      _nop_();
      _nop_();
      _nop_();
      _nop_();
      _nop_();
      _nop_();
      _nop_();
      _nop_();
      _nop_();
      _nop_();
}

/*********************超聲波測距程序*****************************/
void send_wave()
{
      c_send = 1;
      delay();
      c_send = 0;
      while(!c_recive);
      TR0=1;
      while(c_recive)
      {
            flag_time0 = TH0 * 256 + TL0;
            if((flag_time0 > 40000))
            {
                     TR0 = 0;
                     flag_csb_juli = 2;
                     distance = 888;
                     break ;
            }
            else
            {
                     flag_csb_juli = 1;
            }
      }
      if(flag_csb_juli == 1)
      {
            TR0=0;
            distance = TH0;
            distance = distance * 256 + TL0;
            if(temperature <= 45)
                     distance *= wendu_buchang1[temperature] / 2.0 * 0.0001;
            else
                     distance *= 358 / 2.0 * 0.0001;
            if(distance > 600)
            {
                     distance = 888;
            }
      }
}

/*********************定時器0、定時器1初始化******************/
void time_init()
{
      EA  = 1;
      TMOD = 0X11;
      ET0 = 0;
      TR0 = 1;
      ET1 = 0;
      TR1 = 1;
}

/**************報警函數***************/
void clock_h_l()
{
      static uchar value;
      if((shuiwei <= set_gl) || (shuiwei >= set_gh))
      {
            value ++;
            if(value >= 2)
            {
                     if(flag_en == 1)
                              beep = ~beep;
            }
      }
      else
      {
            value = 0;
            beep = 1;
            flag_en = 1;
      }
}

/***************主函數*****************/
void main()
{
      init_1602();
      time_init();
      while(1)
      {
            if(flag_300ms == 1)
            {
                     flag_300ms = 0;
                     clock_h_l();
                     temperature = read_temp();
                     if((beep == 1))
                              send_wave();
                     if(menu_1 == 0)
                     {
                              if(distance > 10 + sw_jz)
                              {
                                    write_string(1,7,"--.-m");
                              }else
                              {
                                    if(sw_jz >= distance)
                                    {
                                             shuiwei = sw_jz - distance;
                                    }else
                                             shuiwei = 0;
                                    write_sfm3(1,7,shuiwei);
                              }
                              write_sfm2(1,13,temperature);
                     }
                     write_sfm3(1,8,distance);
            }
            key();
            if(key_can < 10)
            {
                     key_with();
            }
      }
}

/*********************定時器0中斷服務程序************************/
void time1_int() interrupt 3
{
      static uchar value;
      TH0 = 0x3c;
      TL0 = 0xb0;
      value ++;
      if(value % 6 == 0)
      {
            flag_300ms = 1;
            value = 0;
      }
      if(flag_lj_en == 1)
      {
            key_time ++;
            if(key_time >= 10)
            {
                     key_time = 0;
                     key_500ms = 1;
                     key_value ++;
                     if(key_value > 3)
                     {
                              key_value = 10;
                              flag_lj_3_en = 1;
                     }
            }
      }
}

ID:104477 · 發表于 2018-6-27 00:42

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超聲波水位控制程序（隨溫度變化）單片機源碼