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標題: 單片機+HC-SR05超聲波測距 12864顯示程序 [打印本頁]

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作者: zzt223    時間: 2018-12-6 11:06
標題: 單片機+HC-SR05超聲波測距 12864顯示程序
超聲波測距，12864顯示。超聲波傳感器采用HC-SR05。
下面是實驗程序：
/******************************************************************************/
/*  Name:  LCD12864(St7920/St7921)+超聲波測距模塊+STC89C52                    */
/*  HC-SR04 超聲波測距模塊 DEMO 程序               */
/*  晶振：11.0592M                                                            */
/*      RS(CS)    接  P3.3;                   */
/*      RW(SID)   接  P3.4;                        */
/*      E(SCLK)   接  P3.5;                     */
/*      PSB       接  GND 串行模式                */
/******************************************************************************/
    #include   <AT89X51.H>
#include   <intrins.h>
//引腳定義
    sbit     RX    =  P1 ^ 1;
    sbit     TX    =  P1 ^ 2;
    sbit     CS    =  P3 ^ 3; //片選 高電平有效 單片LCD使用時可固定高電平
    sbit     SID   =  P3 ^ 4; //數據
    sbit     SCLK  =  P3 ^ 5; //時鐘
  sbit     la       = P2^0;
  sbit     la1      =P0^0;

//Function Definition　函數聲明
void Delay(int num);
void Init_DS18B20(void);
unsigned char ReadOneChar(void);
void WriteOneChar(unsigned char dat);
unsigned int ReadTemperature(void);
void clock_out(unsigned char dd);
unsigned char clock_in(void);
unsigned char read_clock(unsigned char ord);
void write_clock(unsigned char ord, unsigned char dd);
void Disp(void);
void id_case1_key(void);
void id_case2_key(void);
void Set_time(unsigned char sel,bit sel_1);
void Timer0_Init(void);
void Init_1302(void);
void Set_Bell(unsigned char sel, bit sel_1);
void Bell(void);
void laba1();       //蜂鳴器

//12864
void Write_char(bit start, unsigned char ddata);
void Send_byte(unsigned char bbyte);
void Delaynms(unsigned int di);
void Lcd_init(void);
void Disp_img(unsigned char *img);
void LCD_Write_string(unsigned char X,unsigned char Y,unsigned char *s);
void LCD_set_xy( unsigned char x, unsigned char y );
unsigned char code num[]={"0123456789 :.-"};
unsigned char code waves[]={"超聲波測距系統"};
unsigned char code znwk[] ={"電子科技俱樂部"};
unsigned char code CM[] =  {"CM"};
unsigned int  time=0;
         long S=0;
       long d=0;
         bit  flag =0;
int  a=0;
unsigned char disbuff[4]    ={ 0,0,0,0,};
unsigned char code logo[]={  
/*--  調入了一幅圖像：logo.bmp  -- */
/*--  寬度x高度=128x64 歡迎使用本產品LOGO --*/
/*--  調入了一幅圖像：C:\Documents and Settings\lwd\桌面\新建文件夾\X.bmp  --*/
/*--  寬度x高度=128x64  --*/
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};
/******************************************************************************/
void Lcd_init(void) //初始化LCD
{
Delaynms(10); //啟動等待，等LCM講入工作狀態
   CS=1;
   Write_char(0,0x30);  //8 位介面，基本指令集
   Write_char(0,0x0c);  //顯示打開，光標關，反白關
   Write_char(0,0x01);  //清屏，將DDRAM的地址計數器歸零  
}
/******************************************************************************/
void Write_char(bit start, unsigned char ddata) //寫指令或數據
{
unsigned char start_data,Hdata,Ldata;
   if(start==0)
  start_data=0xf8;  //寫指令
    else   
     start_data=0xfa;  //寫數據
  
   Hdata=ddata&0xf0;    //取高四位
   Ldata=(ddata<<4)&0xf0;  //取低四位
   Send_byte(start_data);   //發送起始信號
   Delaynms(5); //延時是必須的
   Send_byte(Hdata);       //發送高四位
   Delaynms(1);  //延時是必須的
   Send_byte(Ldata);    //發送低四位
   Delaynms(1);  //延時是必須的
}
/******************************************************************************/
void Send_byte(unsigned char bbyte) //發送一個字節
{
unsigned char i;
  for(i=0;i<8;i++)
    {
     SID=bbyte&0x80; //取出最高位
   SCLK=1;
     SCLK=0;
     bbyte<<=1; //左移
    }  
}
/******************************************************************************/
void Delaynms(unsigned int di) //延時
{
unsigned int da,db;
  for(da=0;da<di;da++)
     for(db=0;db<10;db++);
}
/**************/
由于篇幅有限，余下的代碼請下載文檔。 超聲波測距.rar (50.42 KB, 下載次數: 13)

2018-12-6 12:07 上傳

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