lcd1602._h

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#define LCDPORT PORTD
#define LCDDDR DDRD
#define LCDPIN PIND

#define RS_CLR	PORTA&= ~(1 << PA0)
#define RS_SET	PORTA |= (1 << PA0)

#define RW_CLR	PORTA &= ~(1 << PA1)
#define RW_SET	PORTA |= (1 << PA1)

#define EN_CLR	PORTA &= ~(1 << PA2)
#define EN_SET	PORTA |= (1 << PA2)
#define Clear_Screen  Write_Command(0x01)

void delay_1ms(void);
void delay_ms(unsigned int n);
//void En_Toggle();//产生一个使能脉冲
void Wait_Until_Ready(void);
void Write_Command(unsigned char Command);   //向LCD写入命令字
void Write_Data(unsigned int Data);
void Write_Position(unsigned int row,unsigned int colum);//设字符位置
void Write_String(char *s);//写入字符串
void Initialize_LCD(void);