介绍AVR单片机与SD卡及MP3芯片的通信接口代码。

				/************************************************************/
				/*		         HEAD FILE  for   3310					    */
				/*				   By   pasyong								*/
				/*				   2006-4									*/
				/*				   Base ICC6.31A					        */
				/************************************************************/
				#define uchar unsigned char 
				#define uint unsigned int 
				
				//3310
				void lcd_port(void);
				void LCD_write_byte(unsigned char data, unsigned char command);
				void LCD_set_XY(unsigned char X, unsigned char Y);
				void LCD_write_char(unsigned char c);
				void LCD_write_english_string(unsigned char X,unsigned char Y,char *s);
				void LCD_write_chinese_string(unsigned char X, unsigned char Y, 
				                   unsigned char ch_with,unsigned char num,
				                   unsigned char line,unsigned char row);
				void LCD_move_chinese_string (unsigned char X, unsigned char Y, unsigned char T);
				void LCD_draw_bmp_pixel(unsigned char X,unsigned char Y,unsigned char *map,
				                  unsigned char Pix_x,unsigned char Pix_y);
				void LCD_clear(void);
				void LCD_init(void);