keil写stc芯片lcd1602显示hc-sr04超声波测距代码

你可以尝试以下的代码：

#include <reg52.h>
#include <intrins.h>

#define LCDDataPort P2

sbit RS=P0^0;
sbit RW=P0^1;
sbit EN=P0^2;

void delay_ms(unsigned int ms)
{
    unsigned int i, j;
    for (i = 0; i < ms; i ++)
    {
        for (j = 0; j < 90; j ++);
    }
}

void delay_us(unsigned int us)
{
    while(us--)
        _nop_();
}

void WriteCommand(unsigned char Command)
{
    RS = 0;
    EN = 1;
    RW = 0;
    LCDDataPort = Command;
    delay_us(5);
    EN = 0;
    delay_ms(1);
}

void WriteData(unsigned char Data)
{
    RS = 1;
    EN = 1;
    RW = 0;
    LCDDataPort = Data;
    delay_us(5);
    EN = 0;
    delay_ms(1);
}

void delay(int x)
{
    int i,j;
    for(i=0;i<x;i++)
       for(j=0;j<125;j++);
}

void InitLcd1602()
{
    WriteCommand(0x38);
    WriteCommand(0x0c);  
    WriteCommand(0x06);
    WriteCommand(0x01);
    delay_ms(10);
}

void Display(unsigned char X,unsigned char Y,unsigned char DispData[])
{
    unsigned char i;
    if(X<16)
    {
       X = 0x80 + X;
       WriteCommand(X);
    }
    else
    {
       X = 0x80 + 0x40 + X-16;
       WriteCommand(X);
    }
    for(i=0;i<Y;i++)
    {
        WriteData(DispData[i]);
    }
}

void WriteChar(unsigned char X,unsigned char Y,unsigned char DData)
{
    if(X<16)
    {
       X = 0x80 + X;
       WriteCommand(X);
    }
    else
    {
       X = 0x80 + 0x40 + X-16;
       WriteCommand(X);
    }
    WriteData(DData);
}

void main()
{
    unsigned char buf[16];
    unsigned char temp;
    unsigned int dis;
    InitLcd1602();
    while(1)
    {
        WriteCommand(0x01);
        WriteChar(0,0,'H');
        WriteChar(1,0,'C');
        WriteChar(2,0,'-');
        WriteChar(3,0,'S');
        WriteChar(4,0,'R');
        WriteChar(5,0,'0');
        WriteChar(6,0,'4');
        WriteChar(9,0,'D');
        WriteChar(10,0,'I');
        WriteChar(11,0,'S');
        WriteChar(12,0,'T');
        WriteChar(13,0,'A');
        WriteChar(14,0,'N');
        WriteChar(15,0,'C');
        delay(20);  
        
        WriteCommand(0x01);  
        WriteChar(0,0,'D');
        WriteChar(1,0,'I');
        WriteChar(2,0,'S');
        WriteChar(3,0,'T');
        WriteChar(4,0,'A');
        WriteChar(5,0,'N');
        WriteChar(6,0,'C');
        WriteChar(9,0,'M');
        WriteChar(10,0,'E');
        WriteChar(11,0,'T');
        WriteChar(12,0,'E');
        WriteChar(13,0,'R');
        WriteChar(14,0,':');
        WriteChar(15,0,' ');

        WriteCommand(0x80+0x40+2);
        WriteChar(2,1,'C');
        WriteChar(3,1,'M');
        WriteChar(4,1,':');
        WriteChar(5,1,' ');
        WriteCommand(0x80+0x40+9);
        WriteChar(9,1,'I');
        WriteChar(10,1,'N');
        WriteChar(11,1,'C');
        WriteChar(12,1,'H');
        WriteChar(13,1,' ');
        WriteChar(14,1,'E');
        WriteChar(15,1,'S');

        temp=P1;
        P3_6=1;
        delay(100);
        P3_6=0;

        while(!P1);
        TR0=1;
        while(P1);
        TR0=0;
        dis=TH0;
        dis<<=8;
        dis|=TL0;
        dis/=58;
        sprintf(buf,"%d  ",dis);
        Display(7,1,buf);
        delay(200);
    }
}

以上是使用Keil编写STC芯片LCD1602显示HC-SR04超声波测距代码。希望对您有所帮助！