超声波测距,51单片机和c8051单片机程序.doc

C8051F410单片机程序/-#include / SFR declarations#include #include #define uint unsigned int #define uchar unsigned charsbit Trig=P07;sbit Echo=P06;sbit lcden=P24;sbit lcdrs=P25;sbit sdi=P26;sbit clk=P27;unsigned long s;bit flag =0;unsigned char code table1= Ce De Jv Li is ;unsigned char code table2=Chao Chu fan Wei;unsigned char code table3=JingQue:;unsigned char table8;/-/ Function PROTOTYPES/-void PORT_Init (void);void Oscillator_Init();void write_595(unsigned char da);void lcd_init(void);void write_com(unsigned char com);void write_data(unsigned char da);void delay(unsigned int z);void delaym(uchar i);void delaym(uchar i) while(i-);/-/ MAIN Routine/-void main() uchar num; PCA0MD &= 0x40;/禁止看门狗 PORT_Init (); Oscillator_Init();/时钟初始化 lcd_init(); while(1) TMOD=0x01;/EA=1;/IE=0x80; /开启总中断 /TR0=0; TH0=0; TL0=0;/ET0=1; /允许T0中断 /IE=0x80; /开启总中断 Trig=1; delaym(200); Trig=0;while(!Echo); TR0=1; /开启计数 while(Echo);/当RX为1计数并等待 TR0=0;/关闭计数 s=(TH0*256+TL0)*0.17*4;table0=s/1000+0x30;table1=(s%1000)/100+0x30;table2=(s%100)/10+0x30;table3=.;table4=s%10+0x30;table5=c;table6=m;table7=*; if(s=7000|flag=1|s5) /超出测量范围 write_com(0x80+0x40);for(num=0;num17;num+)write_data(table2num);delay(10); else write_com(0x80+0x48); for(num=0;num8;num+) write_data(tablenum); delay(10); write_com(0x80+0x40); for(num=0;num8;num+) write_data(table3num); delay(10); delay(1000); /*函数名称：void PORT_Init(void)功能描述：初始化I/O输入：无输出：无全局变量：XBR1调用模块：无*/void PORT_Init (void) P2MDOUT = 0xC0; XBR1= 0x40; /*使能交叉开关和弱上拉*/*函数名称：void Oscillator_Init()功能描述：初始化Oscillator,时钟为片内时钟八分频3.0625Mhz输入：无输出：无全局变量：无调用模块：无*/void Oscillator_Init()OSCICN = 0x84;/ 系统时钟初始化为片内时钟的8分频，3.0625Mhz/*函数名称：void write_595(unsigned char da)功能描述：使用MC74HC595AD将串行数据转化为八位并行数据输出输入：da输出：无全局变量：无调用模块：无备注：使用时钟频率为系统时钟初始化为片内时钟的8分频，3.0625Mhz*/void write_595(unsigned char da)int i;for(i=0;i8;i+)/先送高位，再送低位clk=0;da=_crol_(da,1);sdi=da&0x01;clk=1;clk=0;_nop_();clk=1;/*函数名称：void lcd_init(void)功能描述：1602液晶初始化输入：无输出：无全局变量：无调用模块：write_com()备注：无*/void lcd_init(void) uchar num;lcden=0;write_com(0x38);write_com(0x0C);write_com(0x06);write_com(0x01);write_com(0x80);for(num=0;num17;num+)write_data(table1num);delay(5);/*函数名称：void write_com(unsigned char com)功能描述：1602液晶写指令输入：com输出：无全局变量：无调用模块：write_595()备注：无*/void write_com(unsigned char com)lcdrs=0;write_595(com);delay(15);lcden=1;delay(15);lcden=0;/*函数名称：void write_data(unsigned char da)功能描述：1602液晶写数据输入：command输出：无全局变量：无调用模块：write_595()备注：无*/void write_data(unsigned char da)lcdrs=1;write_595(da);delay(15);lcden=1;delay(15);lcden=0;/*函数名称：void delay(unsigned int z)功能描述：延时函数2Mhz时钟下延时1ms输入：z输出：无全局变量：无调用模块：无备注：无*/void delay(unsigned int z) unsigned int ii,jj; for(ii=0;iiz;ii+) for(jj=0;jj180;jj+) _nop_(); void zd0() interrupt 1 /T0中断用来计数器溢出,超过测距范围 flag=1; /中断溢出标志Echo=0;89c51或52#include /器件配置文件#include #include sbit Rcho=P36;sbit Trig=P37;sbit LCM_RW=P25 ; /定义LCD引脚sbit LCM_RS=P26;sbit LCM_E=P27;#define LCM_Data P0sbit Key_Data=P31; /定义Keyboard引脚sbit Key_CLK=P32;#define Busy 0x80 /用于检测LCM状态字中的Busy标识void LCMInit(void); /LCD初始化函数void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData);/LCD显示一个字符函数void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData);/LCD显示一个字符串函数void Delay5Ms(void); /延时5毫秒函数void Delay400Ms(void); /延时400毫秒函数void Decode(unsigned char ScanCode);void WriteDataLCM(unsigned char WDLCM); /LCD1602写数据函数void WriteCommandLCM(unsigned char WCLCM,BuysC); /LCD写命令函数/unsigned char ReadDataLCM(void);unsigned char ReadStatusLCM(void);unsigned char code Range = Wang Li Yong; unsigned char code ASCII13 = 0123456789.-M;unsigned char code table=Jv Li = 000.0 cm;unsigned char code table1=Chao Chu fan Wei;/static unsigned char DisNum = 0; /显示用指针 unsigned int time=0;unsigned long S=0;bit flag =0;unsigned char disbuff4= 0,0,0,0,;/写数据void WriteDataLCM(unsigned char WDLCM) ReadStatusLCM(); /检测忙LCM_Data = WDLCM;LCM_RS = 1;LCM_RW = 0;LCM_E = 0; /若晶振速度太高可以在这后加小的延时LCM_E = 0; /延时LCM_E = 1;/写指令void WriteCommandLCM(unsigned char WCLCM,BuysC) /BuysC为0时忽略忙检测if (BuysC) ReadStatusLCM(); /根据需要检测忙LCM_Data = WCLCM;LCM_RS = 0;LCM_RW = 0;LCM_E = 0;LCM_E = 0;LCM_E = 1;/读数据/*unsigned char ReadDataLCM(void)LCM_RS = 1; LCM_RW = 1;LCM_E = 0;LCM_E = 0;LCM_E = 1;return(LCM_Data);*/读状态unsigned char ReadStatusLCM(void)LCM_Data = 0xFF; LCM_RS = 0;LCM_RW = 1;LCM_E = 0;LCM_E = 0;LCM_E = 1;while (LCM_Data & Busy); /检测忙信号return(LCM_Data);void LCMInit(void) /LCM初始化LCM_Data = 0;WriteCommandLCM(0x38,0); /三次显示模式设置，不检测忙信号Delay5Ms(); WriteCommandLCM(0x38,0);Delay5Ms(); WriteCommandLCM(0x38,0);Delay5Ms(); WriteCommandLCM(0x38,1); /显示模式设置,开始要求每次检测忙信号WriteCommandLCM(0x08,1); /关闭显示WriteCommandLCM(0x01,1); /显示清屏WriteCommandLCM(0x06,1); / 显示光标移动设置WriteCommandLCM(0x0c,1); / 显示开及光标设置/按指定位置显示一个字符void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)Y &= 0x1;X &= 0xF; /限制X不能大于15，Y不能大于1if (Y) X |= 0x40; /当要显示第二行时地址码+0x40;X |= 0x80; /算出指令码WriteCommandLCM(X, 1); /发命令字WriteDataLCM(DData); /发数据/按指定位置显示一串字符void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData)unsigned char ListLength; ListLength = 0;Y &= 0x1;X &= 0xF; /限制X不能大于15，Y不能大于1while (DDataListLength0x19) /若到达字串尾则退出if (X =7000)|flag=1) /超出测量范围 flag=0; DisplayListChar(0, 1, table1); else disbuff0=S%10; disbuff1=S/10%10; disbuff2=S/100%10; disbuff3=S/1000; DisplayListChar(0, 1, table); DisplayOneChar(9, 1, ASCIIdisbuff3); DisplayOneChar(10, 1, ASCIIdisbuff2); DisplayOneChar(11, 1, ASCIIdisbuff1); DisplayOneChar(12, 1, ASCII10); DisplayOneChar(13, 1, ASCIIdisbuff0); /*/ void zd0() interrupt 1 /T0中断用来计数器溢出,超过测距范围 flag=1; /中断溢出标志Rcho=0; /*/ void StartModule() /启动模块 Trig=1; /启动一次模块 _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_();/* _nop_(