1602lcd._h

用avr的m16产生pwm波控制舵机的程序！

//定义MCU与LCD的接口
#define LCD_EN_PORT    PORTD
#define LCD_RW_PORT    PORTD
#define LCD_RS_PORT    PORTD
#define LCD_DATA_PORT  PORTB
#define LCD_DATA_DDR   DDRB
#define LCD_DATA_PIN   PINB

#define LCD_EN         0x20   //portd5         out
#define LCD_RW         0x08   //portd3         out/in
#define LCD_RS         0x10   //portd4         out
#define LCD_DATA       0xf0   //portb4/5/6/7   out
//////////////////////////////////////////////////////
#define uchar unsigned char 
#define uint unsigned int 
#define T_CLK  BIT(2)  /*实时时钟时钟线引脚 */
#define T_IO   BIT(1) /*实时时钟数据线引脚 */
#define T_RST  BIT(0)  /*实时时钟复位线引脚 */
#define T_DDR  DDRA   /*实时时钟数据线方向*/
#define T_PORT PORTA 
#define T_PIN  PINA

#define KEY3   BIT(5)  /*实时时钟时钟线引脚 */
#define KEY2   BIT(4) /*实时时钟数据线引脚 */
#define KEY1   BIT(3)  /*实时时钟复位线引脚 */
/*--------------------------------------------------------------------------------------------------
Public function prototypes
--------------------------------------------------------------------------------------------------*/
void LCD_init         (void);
void LCD_en_write     (void);
void LCD_write_char   (unsigned command,unsigned data);
void LCD_wait_Ready   (void);
void LCD_set_xy       (unsigned char x, unsigned char y);
void LCD_write_string (unsigned char X,unsigned char Y,unsigned char *s);
void delay_nus        (unsigned int n);
void delay_nms        (unsigned int n);