如何用51单片机控制LCD1602

时间：2024-10-12 17:02:26

1、新建工程

2、新建代码文件

3、复制代码到文件代码：/***********************************涯箨唁峦****************************************标题： L潮贾篡绐CD1602作者：百度ID计得劲滋润爽说明：本程序在液晶LCD1602上显示两行字符******************************************************************************///头文件:#include <reg52.h>/********IO引脚定义***********************************************************/sbit LCD_RS=P1^0;//定义引脚sbit LCD_RW=P1^1;sbit LCD_E=P1^2;/********宏定义***********************************************************/#define LCD_Data P0#define Busy 0x80 //用于检测LCD状态字中的Busy标识/********数据定义*************************************************************/unsigned char code uctech[] = {"LCD1602 DJZRS"};unsigned char code net[] = {"51hahahahahaha51"};/********函数声明*************************************************************/void WriteDataLCD(unsigned char WDLCD); //写数据void WriteCommandLCD(unsigned char WCLCD,BuysC); //写命令unsigned char ReadDataLCD(void); //读数据unsigned char ReadStatusLCD(void); //读状态void LCDInit(void); //初始化void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData); //相应坐标显示字节内容void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData); //相应坐标开始显示一串内容void Delay5Ms(void); //延时void Delay400Ms(void); //延时/***********主函数开始********************************************************/ void main(void){ Delay400Ms(); //启动等待，等LCD讲入工作状态 LCDInit(); //初始化 Delay5Ms(); //延时片刻(可不要) DisplayListChar(0, 0, uctech); DisplayListChar(0, 5, net); ReadDataLCD(); //测试用句无意义 while(1);}/***********写数据********************************************************/ void WriteDataLCD(unsigned char WDLCD){ ReadStatusLCD(); //检测忙 LCD_Data = WDLCD; LCD_RS = 1; LCD_RW = 0; LCD_E = 0; //若晶振速度太高可以在这后加小的延时 LCD_E = 0; //延时 LCD_E = 1;}/***********写指令********************************************************/ void WriteCommandLCD(unsigned char WCLCD,BuysC) //BuysC为0时忽略忙检测{ if (BuysC) ReadStatusLCD(); //根据需要检测忙 LCD_Data = WCLCD; LCD_RS = 0; LCD_RW = 0; LCD_E = 0; LCD_E = 0; LCD_E = 1;}/***********读数据********************************************************/ unsigned char ReadDataLCD(void){ LCD_RS = 1; LCD_RW = 1; LCD_E = 0; LCD_E = 0; LCD_E = 1; return(LCD_Data);}/***********读状态*******************************************************/ unsigned char ReadStatusLCD(void){ LCD_Data = 0xFF; LCD_RS = 0; LCD_RW = 1; LCD_E = 0; LCD_E = 0; LCD_E = 1; while (LCD_Data & Busy); //检测忙信号 return(LCD_Data);}/***********初始化********************************************************/ void LCDInit(void){ LCD_Data = 0; WriteCommandLCD(0x38,0); //三次模式设置，不检测忙信号 Delay5Ms(); WriteCommandLCD(0x38,0); Delay5Ms(); WriteCommandLCD(0x38,0); Delay5Ms(); WriteCommandLCD(0x38,1); //显示模式设置,开始要求每次检测忙信号 WriteCommandLCD(0x08,1); //关闭显示 WriteCommandLCD(0x01,1); //显示清屏 WriteCommandLCD(0x06,1); //显示光标移动设置 WriteCommandLCD(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1 if (Y) X |= 0x40; //当要显示第二行时地址码+0x40; X |= 0x80; //算出指令码 WriteCommandLCD(X, 0); //这里不检测忙信号，发送地址码 WriteDataLCD(DData);}/***********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1 while (DData[ListLength]>=0x20){ //若到达字串尾则退出 if (X <= 0xF){ //X坐标应小于0xF DisplayOneChar(X, Y, DData[ListLength]); //显示单个字符 ListLength++; X++; } }}/***********短延时********************************************************/ void Delay5Ms(void){ unsigned int TempCyc = 5552; while(TempCyc--);}/***********长延时********************************************************/ void Delay400Ms(void){ unsigned char TempCycA = 5; unsigned int TempCycB; while(TempCycA--){ TempCycB=7269; while(TempCycB--); }}

4、把文件添加到组