#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int
//lcd管腳
sbit Lcd_rs=P3^0;
sbit Lcd_rw=P3^1;
sbit Lcd_en=P3^3;



void delay(uchar t)
{
	uchar j;
	uint i;
	for(i=0;i<t;i++)
		for(j=0;j<110;j++);
}

//lcd寫命令函數
void LCD_Write_Com(uchar com)
{
	Lcd_rs = 0;
	Lcd_rw = 0;
	P1 = com;
	delay(1);
	Lcd_en = 1;
	delay(1);
	Lcd_en = 0;
}
//lcd寫數據函數
void LCD_Write_Data(uchar date)
{
	Lcd_rs = 1;
	Lcd_rw = 0;
	P1 = date;
	delay(1);
	Lcd_en = 1;
	delay(1);
	Lcd_en = 0;
}
//==========================================================
//輸入函數:	x 橫坐標;	s 縱坐標	0--->一行：1--->第二行
//輸出函數: address
//說    明: 寫地址函數
//========================================================== 
void LCD_Set_xy(uchar x,uchar s)
{
	uchar address;
	if(s==0)
		address=0x80+x;
	else
		address=0x80+0x40+x;
	LCD_Write_Com(address);
}
//==========================================================
//輸入函數:	x 橫坐標;	y 縱坐標	0--->一行：1--->第二行;date數據；
//輸出函數: 按地址寫數據
//說    明: 寫數據函數
//==========================================================
void LCD_Write_add_data(uchar x,uchar y,uchar date)
{
	LCD_Set_xy(x,y);
	LCD_Write_Data(date);
}
void LCD_init()
{
	Lcd_en = 0;
	LCD_Write_Com( 0x38 );//顯示模式設置
	LCD_Write_Com( 0x0c );//顯示光標
	LCD_Write_Com( 0x01 );//清屏
	LCD_Write_Com( 0x80 );//數據指針設置
}