/*******************************************************************************
*??描述:???????????????????????????????????????????????????????????????????????*
*?????????1602字符型LCD顯示演示程序????????????????????????????????????????????*
*?????????在第一行顯示??welcome????????????????????????????????????????????????*
*?????????在第二行顯示??www.ycit.cn?????????????????????????????????????????*
*??????????????????????????????????????????????????????????????????????????????*
********************************************************************************/


#ifndef?uchar
#define?uchar?unsigned?char
#endif
#ifndef?uint?
#define?uint?unsigned?int
#endif
#define?nop?_NOP（）

//RS--P5.6??RW--P5.5??E--P5.4
//sbit?RS	=?P2^6;		//
//sbit?RW?=?P2^5;
//sbit?E?=?P2^7;
#define?RS_1?P5OUT?|=?BIT6
#define?RS_0?P5OUT?&=?~BIT6
#define?RW_1?P5OUT?|=?BIT5
#define?RW_0?P5OUT?&=?~BIT5??////
#define?E_1??P5OUT?|=?BIT4
#define?E_0??P5OUT?&=?~BIT4
uchar??dis1[]?=?{“welcome!“};
uchar??dis2[]?=?{“www.ycit.cn“};
/*
void?RS（char?s）
{
	if（s==1）?P5OUT?|=?BIT6;
	else??P5OUT?&=?~BIT6;
}
void?RW（char?s）
{
	if（s==1）?P5OUT?|=?BIT5;
	else??P5OUT?&=?~BIT5;
}
void?E（char?s）
{
	if（s==1）?P5OUT?|=?BIT4;
	else??P5OUT?&=?~BIT4;
}??*/
/**********LCD1602.c?函數聲明***************/
void?delay（uchar?ms）;??????//延時3*ms毫秒
uchar?lcd_bz（）;??????????????//測試LCD忙碌狀態
void?write_cmd1（uchar?cmd1）;??//寫入指令數據到LCD
void?write_cmd（uchar?cmd）;??//寫入指令數據到LCD
void?lcd_pos（uchar?pos）;???//設定顯示位置
void?write_data（uchar?dat）;?//寫入字符顯示數據到LCD
void?LCD_Init（）;???????????//LCD初始化設定

void?delay（uchar?ms）
{							//?延時子程序
??uchar?i;
??while（ms--）
??{
???for（i?=?0;?i???{
	nop;
	nop;
	nop;
	nop;
???}
??}
}
void?delay_ms（int?ms）
{							//?延時子程序
??uchar?i;
??while（ms--?>0）
??{
???for（i?=?0;?i???{
	nop;
	nop;
	nop;
	nop;
???}
??}
}
/*
uchar?lcd_bz（）
{							//?測試LCD忙碌狀態bit7
	uchar?result=0x80;
????????P3DIR?=0x00;///
	RS_0;
	RW_1;
	E_1;
?	//nop;
	//nop;
	//nop;
	nop;
	result?=?（uchar）（P3IN?&?0x80）;
????????if（result?==?0）
??????????nop;
	E_0;
	return?（result）;	
}

void?write_cmd（uchar?cmd）
{							//?寫入指令數據到LCD
	//while（lcd_bz（）?&?0x80）;
???E_0;
???P3DIR?=?0xff;?///
???RS_0;
???RW_0;
	
	//nop;
	//nop;	
???P3OUT?=?cmd;
	//nop;
	//nop;
	//nop;
	//nop;
???E_1;
???nop;
	//nop;
	//nop;
	//nop;
???E_0;		
}

void?lcd_pos（uchar?pos）
{							//設定顯示位置
??//while（lcd_bz（）?&?0x80）;
??writecmd（pos?|?0x80）;
}

void?write_data（uchar?dat）	
{							//寫入字符顯示數據到LCD
??//while（lcd_bz（）?&?0x80）;
??P3DIR?=??0x00;?????????????//?置位輸入模式
??RW_1;
??RS_0;
??E_1;
??//while（（P3IN?&?0x80）==0x80）;//檢測LCD是否忙
??E_0;
??P3DIR?=?0xff;?///
??RS_0;
??RW_0;
??RS_1;?//
	//E_0;
??P3OUT?=?dat;
	//nop;
	//nop;
	//nop;
	//nop;
??E_1;
	//nop;
	//nop;
	//nop;
??nop;
??E_0;	
}
*/
void?delay_us（uchar?de）
{??while（de--?>0）
??????nop;
}
//（（（（（（（（（（（（（（（（（（（（（（（（（（（（（（
void?busy_check（）
{
??P3DIR?=?0;
??E_0;?//

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????19242??2011-03-04?16:09??LCD1602\Debug\Exe\LCD1602.d43

?????文件????????133??2011-03-04?16:09??LCD1602\Debug\Obj\LCD1602.pbd

?????文件??????21482??2011-03-04?16:09??LCD1602\Debug\Obj\main.r43

?????文件???????5208??2011-03-04?16:03??LCD1602\LCD1602.c

?????文件???????2121??2011-03-04?16:23??LCD1602\LCD1602.dep

?????文件??????17879??2011-03-03?21:50??LCD1602\LCD1602.ewd

?????文件??????47478??2011-03-03?21:50??LCD1602\LCD1602.ewp

?????文件????????161??2011-03-03?21:50??LCD1602\LCD1602.eww

?????文件????????901??2011-03-04?16:09??LCD1602\main.c

?????文件???????2729??2011-03-04?16:10??LCD1602\settings\LCD1602.cspy.bat

?????文件???????5545??2011-03-04?16:23??LCD1602\settings\LCD1602.dbgdt

?????文件???????1188??2011-03-04?16:23??LCD1602\settings\LCD1602.dni

?????文件???????3404??2011-03-04?16:23??LCD1602\settings\LCD1602.wsdt

?????目錄??????????0??2011-03-04?15:12??LCD1602\Debug\Exe

?????目錄??????????0??2011-03-03?21:42??LCD1602\Debug\List

?????目錄??????????0??2011-03-04?16:23??LCD1602\Debug\Obj

?????目錄??????????0??2011-03-03?21:42??LCD1602\Debug

?????目錄??????????0??2011-03-03?22:29??LCD1602\settings

?????目錄??????????0??2011-03-04?16:09??LCD1602

-----------?---------??----------?-----??----

???????????????127471????????????????????19