LCD1602显示字符/字符串

开发手册分析

代码模块

lcd1602.c

#include 
#include "LCD1602.h"
#include "intrins.h"
sbit LCD_RS = P2^6;
sbit LCD_RW = P2^5;
sbit LCD_E = P2^7;
#define LCD_DataPort P0

void Delay1ms()		//@11.0592MHz
{
	unsigned char i, j;

	_nop_();
	i = 2;
	j = 199;
	do
	{
		while (--j);
	} while (--i);
}
//写指令
void LCD_Write_cmd(unsigned char cmd)
{
	LCD_RS=0;//设置指令模式
	LCD_RW=0;//设置写模式
	LCD_DataPort=cmd;//命令输入
	LCD_E=1; //使能
	Delay1ms();
	LCD_E=0;
	Delay1ms();
}
//写数据
void LCD_Write_Data(unsigned char dat)
{
	LCD_RS=1;//设置数据模式
	LCD_RW=0;//设置写模式
	LCD_DataPort=dat;//写入数据
	LCD_E=1; //使能
	Delay1ms();
	LCD_E=0;
	Delay1ms();
}
void LCD_Init()
{
	LCD_Write_cmd(0x38);//配置8位数据接口
	LCD_Write_cmd(0x0c);//显示开，光标关，闪烁开
	LCD_Write_cmd(0x06);//光标+1，画面不动
	LCD_Write_cmd(0x01);//清屏
}
void LCD_SetCursor(unsigned char line,unsigned char columu)
{
	if(line==1)
	{
		LCD_Write_cmd(0x80 | (columu-1));
	}
	else
	{
		LCD_Write_cmd(0x80 | (columu-1)+0x40);
	}

}
//显示字符函数
void LCD_Showchar(unsigned char line,unsigned char columu,unsigned char Char)
{
	LCD_SetCursor(line,columu);
	LCD_Write_Data(Char);
}
//显示字符串函数
void LCD_Showstring(unsigned char line,unsigned char columu,unsigned char string[])
{
	unsigned char i;
	LCD_SetCursor(line,columu);
	for(i=0;string[i]!='\0';i++)
	{
		LCD_Write_Data(string[i]);
	
	}
}

lcd1602.h

#ifndef _LCD1602_H_
#define _LCD1602_H_

void LCD_Write_cmd(unsigned char cmd);
void LCD_Write_Data(unsigned char dat);
void LCD_Init();
void LCD_Showchar(unsigned char line,unsigned char columu,unsigned char Char);
void LCD_Showstring(unsigned char line,unsigned char columu,unsigned char string[]);
void LCD_SetCursor(unsigned char line,unsigned char columu);
#endif

mian.c

#include "regx52.h"
#include "intrins.h"
#include "LCD1602.h"

void main()
{
	LCD_Init();
	LCD_Showchar(1,1,'A');
	LCD_Showstring(1,3,"hello");
	while(1)
	{
	
	}
	
	
}