DS1307读写

//void LCD_init(void); //LCD1602初始化 //void LCD_send_command(uchar command); // //void LCD_send_data(uchar dat); //void LCD_write_char(uchar x,uchar y,uchar dat); //void LCD_write_string(uchar x,uchar y,char *Data); void delay_ms(uint n); // void LCD_check_busy(void);