超声波L C D显示测距程序Company number【1089WT-1898YT-1W8CB-9UUT-92108】/************************************************************** ****************/ /*Name:LCD12864(St7920/St7921)+超声波测距模块+STC89C52*//*DYP-ME007超声波测距模块DEMO程序*//*晶振：11.0592M*/*//*接线：模块TRIG接P1.2ECH0接P1.1*//*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>//引脚定义sbitRX=P1^1;sbitTX=P1^2;sbitCS=P3^3; //片选高电平有效单片LCD使用时可固定高电平sbitSID=P3^4; //数据sbitSCLK=P3^5; //时钟//FunctionDefinition 函数声明voidDelay(intnum);voidInit_DS18B20(void);unsignedcharReadOneChar(void);voidWriteOneChar(unsignedchardat); unsignedintReadTemperature(void);voidclock_out(unsignedchardd);unsignedcharclock_in(void);unsignedcharread_clock(unsignedcharord);voidwrite_clock(unsignedcharord,unsignedchardd);voidDisp(void);voidid_case1_key(void);voidid_case2_key(void);voidSet_time(unsignedcharsel,bitsel_1);voidTimer0_Init(void);voidInit_1302(void);voidSet_Bell(unsignedcharsel,bitsel_1);voidBell(void);//12864voidWrite_char(bitstart,unsignedcharddata);voidSend_byte(unsignedcharbbyte);voidDelaynms(unsignedintdi);voidLcd_init(void);voidDisp_img(unsignedchar*img);voidLCD_Write_string(unsignedcharX,unsignedcharY,unsignedchar*s );voidLCD_set_xy(unsignedcharx,unsignedchary); unsignedcharcode:.-"};unsignedcharcodewaves[]={"超声波测距系统"}; unsignedcharcodeznwk[]={"智能微控工作室"}; unsignedcharcodeCM[]={"M"};unsignedinttime=0;longS=0;bitflag=0;unsignedchardisbuff[4] ={0,0,0,0,};unsignedcharcodelogo[]={/*--调入了一幅图像：logo.bmp--*//*--宽度x高度=128x64欢迎使用本产品LOGO--*//*--调入了一幅图像：C:\DocumentsandSettings\lwd\桌面\新建文件夹\X.bmp--*//*--宽度x高度=128x64--*/0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x60,0x00,0x0 0,0x00,0x00,0x00,0x00,0x00,0x00,0xE0,0x00,0x00,0x0C,0x00,0x00,0x40,0x70,0x00,0x0 0,0x00,0x80,0x00,0x00,0x00,0x00,0xE0,0x00,0x00,0x1E,0x00,0x00,0x60,0x70,0x00,0x0 0,0x0F,0xE0,0x00,0x00,0x00,0x01,0xC0,0x00,0x60,0x3C,0x00,0x00,0xE0,0x60,0x00,0x1 F,0xFF,0xE0,0x00,0x00,0x00,0x03,0x80,0x00,0x70,0x70,0x40,0x00,0xE0,0x7E,0x00,0x1 F,0xE0,0xC0,0x00,0x00,0x00,0x03,0x00,0x00,0x73,0xC3,0xF0,0x01,0xC3,0xFC,0x00,0x3 8,0xE1,0xC0,0x00,0x00,0x03,0xC6,0x3C,0x00,0x33,0x9F,0xF0,0x03,0x8F,0xC0,0x00,0x3 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0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x00,0x00,};/************************************************************** ****************/voidLcd_init(void) //初始化LCD{Delaynms(10);//启动等待，等LCM讲入工作状态CS=1;Write_char(0,0x30);//8位介面，基本指令集Write_char(0,0x0c);//显示打开，光标关，反白关Write_char(0,0x01);//清屏，将DDRAM的地址计数器归零}/************************************************************** ****************/voidWrite_char(bitstart,unsignedcharddata)//写指令或数据{unsignedcharstart_data,Hdata,Ldata;if(start==0)start_data=0xf8; //写指令elsestart_data=0xfa;//写数据Hdata=ddata&0xf0; //取高四位Ldata=(ddata<<4)&0xf0;//取低四位Send_byte(start_data); //发送起始信号Delaynms(5);//延时是必须的Send_byte(Hdata); //发送高四位Delaynms(1);//延时是必须的Send_byte(Ldata); //发送低四位Delaynms(1);//延时是必须的}/************************************************************** ****************/voidSend_byte(unsignedcharbbyte)//发送一个字节{unsignedchari;for(i=0;i<8;i++){SID=bbyte&0x80;//取出最高位SCLK=1;SCLK=0;bbyte<<=1;//左移}}/************************************************************** ****************/voidDelaynms(unsignedintdi)//延时{unsignedintda,db;for(da=0;da<di;da++)for(db=0;db<10;db++);}/************************************************************** ****************/voidDisp_img(unsignedchar*img) //图形方式12864显示字模221横向取膜{unsignedchari,j;unsignedintk=0;Write_char(0,0x36);//图形方式for(i=0;i<32;i++){Write_char(0,0x80+i);Write_char(0,0x80);for(j=0;j<16;j++){Write_char(1,img[k++]);}}for(i=0;i<32;i++){Write_char(0,0x80+i);Write_char(0,0x88);for(j=0;j<16;j++){Write_char(1,img[k++]);}}}/************************************************************** ****************/voidClr_Scr(void)//清屏函数{Write_char(0,0x01);}/************************************************************** ****************/voidLCD_set_xy(unsignedcharx,unsignedchary){ //设置LCD显示的起始位置，X为行，Y为列unsignedcharaddress;switch(x){case0:address=0x80+y;break;case1:address=0x80+y;break;case2:address=0x90+y;break;case3:address=0x88+y;break;case4:address=0x98+y;break;default:address=0x80+y;break;}Write_char(0,address);}/************************************************************** ****************/voidLCD_Write_string(unsignedcharX,unsignedcharY,unsignedchar*s) { // 中英文字符串显示函数LCD_set_xy(X,Y);while(*s){Write_char(1,*s);s++;Delaynms(1);}}/************************************************************** ****************/voidLCD_Write_number(unsignedchars)// 数字显示函数{Write_char(1,num[s]);Delaynms(1);}/************************************************************** ****************/voidLcd_Mark2(void){Clr_Scr();//清屏LCD_Write_string(1,0,znwk);//LCD_Write_string(2,0,waves);//LCD_Write_string(3,7,CM);//}/********************************************************/ voidConut(void){time=TH0*256+TL0;TH0=0;TL0=0;S=time*1.87/100;//算出来是CM 11。