#include
?					
#define?uint?unsigned?int?
#ifndef?LCD_CHAR_1602_2005_4_9
#define?LCD_CHAR_1602_2005_4_9
#include?


sbit?pwm=P1^0;

sbit?LcdRs		=?P2^0;
sbit?LcdRw		=?P2^1;
sbit?LcdEn??	=?P2^2;
sfr??DBPort?	=?0x80;		//P0=0x80P1=0x90P2=0xA0P3=0xB0.數(shù)據(jù)端口

//內(nèi)部等待函數(shù)**************************************************************************
unsigned?char?LCD_Wait（void）
{
	LcdRs=0;
	LcdRw=1;	_nop_（）;
	LcdEn=1;	_nop_（）;
	//while（DBPort&0x80）;//在用Proteus仿真時(shí)，注意用屏蔽此語句，在調(diào)用GotoXY（）時(shí)，會進(jìn)入死循環(huán)，
						?//可能在寫該控制字時(shí)，該模塊沒有返回寫入完備命令，即DBPort&0x80==0x80
						?//實(shí)際硬件時(shí)打開此語句
	LcdEn=0;
	return?DBPort;		
}
//向LCD寫入命令或數(shù)據(jù)************************************************************
#define?LCD_COMMAND			0??????//?Command
#define?LCD_DATA			1??????//?Data
#define?LCD_CLEAR_SCREEN	0x01??????//?清屏
#define?LCD_HOMING??		0x02??????//?光標(biāo)返回原點(diǎn)
void?LCD_Write（bit?style?unsigned?char?input）
{
	LcdEn=0;
	LcdRs=style;
	LcdRw=0;		_nop_（）;
	DBPort=input;	_nop_（）;//注意順序
	LcdEn=1;		_nop_（）;//注意順序
	LcdEn=0;		_nop_（）;
	LCD_Wait（）;	
}

//設(shè)置顯示模式************************************************************
#define?LCD_SHOW			0x04????//顯示開
#define?LCD_HIDE			0x00????//顯示關(guān)	??

#define?LCD_CURSOR			0x02?	//顯示光標(biāo)
#define?LCD_NO_CURSOR		0x00????//無光標(biāo)		?????

#define?LCD_FLASH			0x01????//光標(biāo)閃動(dòng)
#define?LCD_NO_FLASH		0x00????//光標(biāo)不閃動(dòng)

void?LCD_SetDisplay（unsigned?char?DisplayMode）
{
	LCD_Write（LCD_COMMAND?0x08|DisplayMode）;	
}

//設(shè)置輸入模式************************************************************
#define?LCD_AC_UP			0x02
#define?LCD_AC_DOWN			0x00??????//?default

#define?LCD_MOVE			0x01??????//?畫面可平移
#define?LCD_NO_MOVE			0x00??????//default

void?LCD_SetInput（unsigned?char?InputMode）
{
	LCD_Write（LCD_COMMAND?0x04|InputMode）;
}

//移動(dòng)光標(biāo)或屏幕************************************************************
/*
#define?LCD_CURSOR		0x02??????
#define?LCD_SCREEN		0x08
#define?LCD_LEFT		0x00
#define?LCD_RIGHT		0x04
void?LCD_Move（unsigned?char?object?unsigned?char?direction）
{
	if（object==LCD_CURSOR）
		LCD_Write（LCD_COMMAND0x10|direction）;
	if（object==LCD_SCREEN）
		LCD_Write（LCD_COMMAND0x18|direction）;
}
*/
//初始化LCD************************************************************
void?LCD_Initial（）
{
	LcdEn=0;
	LCD_Write（LCD_COMMAND0x38）;???????????//8位數(shù)據(jù)端口2行顯示5*7點(diǎn)陣
	LCD_Write（LCD_COMMAND0x38）;
	LCD_SetDisplay（LCD_SHOW|LCD_NO_CURSOR）;????//開啟顯示?無光標(biāo)
	LCD_Write（LCD_COMMANDLCD_CLEAR_SCREEN）;???//清屏
	LCD_SetInput（LCD_AC_UP|LCD_NO_MOVE）;???????//AC遞增?畫面不動(dòng)
}

//************************************************************************
void?GotoXY（unsigned?char?x?unsigned?char?y）
{
	if（y==0）
		LCD_Write（LCD_COMMAND0x80|x）;
	if（y==1）
		LCD_Write（LCD_COMMAND0x80|（x-0x40））;
}
void?Print（unsigned?char?*str）
{
	while（*str!=‘\0‘）
	{
		LCD_Write（LCD_DATA*str）;
		str++;
	}
}
/*
void?LCD_LoadChar（unsigned?char?user[8]?unsigned?char?place）
{
	unsigned?char?i;
	LCD_Write（LCD_COMMAND0x40|（place*8

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2012-05-15?21:26??B09010407?-?頻率計(jì)\
?????文件??????113280??2012-05-15?21:26??B09010407?-?頻率計(jì)\B09010407.DSN
?????文件????????1126??2012-05-15?21:26??B09010407?-?頻率計(jì)\B09010407.PWI
?????目錄???????????0??2012-05-15?21:06??B09010407?-?頻率計(jì)\FangBo\
?????文件????????6376??2008-09-23?09:16??B09010407?-?頻率計(jì)\FangBo\STARTUP.A51
?????文件???????14048??2012-05-15?21:06??B09010407?-?頻率計(jì)\FangBo\STARTUP.LST
?????文件?????????758??2012-05-15?21:06??B09010407?-?頻率計(jì)\FangBo\STARTUP.OBJ
?????文件????????9325??2012-05-15?21:06??B09010407?-?頻率計(jì)\FangBo\fangbo
?????文件???????10171??2012-05-15?21:06??B09010407?-?頻率計(jì)\FangBo\fangbo.LST
?????文件???????13274??2012-05-15?21:06??B09010407?-?頻率計(jì)\FangBo\fangbo.M51
?????文件???????10339??2012-05-15?21:06??B09010407?-?頻率計(jì)\FangBo\fangbo.OBJ
?????文件?????????905??2012-05-15?21:06??B09010407?-?頻率計(jì)\FangBo\fangbo.Opt
?????文件????????2185??2012-05-13?23:16??B09010407?-?頻率計(jì)\FangBo\fangbo.Uv2
?????文件????????5055??2012-05-15?20:51??B09010407?-?頻率計(jì)\FangBo\fangbo.c
?????文件????????1999??2012-05-15?21:06??B09010407?-?頻率計(jì)\FangBo\fangbo.hex
?????文件??????????45??2012-05-15?21:06??B09010407?-?頻率計(jì)\FangBo\fangbo.lnp
?????文件????????1419??2012-05-15?21:06??B09010407?-?頻率計(jì)\FangBo\fangbo.plg
?????文件?????????905??2012-05-15?20:52??B09010407?-?頻率計(jì)\FangBo\fangbo_Opt.Bak
?????文件????????2181??2012-05-11?21:28??B09010407?-?頻率計(jì)\FangBo\fangbo_Uv2.Bak
?????文件??????113378??2012-05-15?21:25??B09010407?-?頻率計(jì)\Last?Loaded?B09010407.DBK
?????目錄???????????0??2012-05-15?21:25??B09010407?-?頻率計(jì)\pinlvji\
?????文件????????6376??2008-09-23?09:16??B09010407?-?頻率計(jì)\pinlvji\STARTUP.A51
?????文件???????14048??2012-05-15?21:23??B09010407?-?頻率計(jì)\pinlvji\STARTUP.LST
?????文件?????????758??2012-05-15?21:23??B09010407?-?頻率計(jì)\pinlvji\STARTUP.OBJ
?????文件???????22740??2012-05-15?21:23??B09010407?-?頻率計(jì)\pinlvji\pinglvji.LST
?????文件???????24547??2012-05-15?21:23??B09010407?-?頻率計(jì)\pinlvji\pinglvji.OBJ
?????文件???????10967??2012-05-15?21:23??B09010407?-?頻率計(jì)\pinlvji\pinglvji.c
?????文件???????23555??2012-05-15?21:23??B09010407?-?頻率計(jì)\pinlvji\pinlvji
?????文件???????26915??2012-05-15?21:23??B09010407?-?頻率計(jì)\pinlvji\pinlvji.M51
?????文件????????1040??2012-05-15?21:25??B09010407?-?頻率計(jì)\pinlvji\pinlvji.Opt
?????文件????????2190??2012-05-11?21:40??B09010407?-?頻率計(jì)\pinlvji\pinlvji.Uv2
............此處省略5個(gè)文件信息