1602lcd.h

AVR典型实例.rar

/*--------------------------------------------------------------- 
下面是AVR与LCD连接信息 
PA2 ->RS 
PA3 ->EN 
地  ->RW 
PA4 ->D4 
PA5 ->D5 
PA6 ->D6 
PA7 ->D7 
要使用本驱动，改变下面配置信息即可 
-----------------------------------------------------------------*/ 
#define LCD_EN_PORT    PORTA   //以下2个要设为同一个口 
#define LCD_EN_DDR     DDRA 
#define LCD_RS_PORT    PORTA   //以下2个要设为同一个口 
#define LCD_RS_DDR     DDRA 
#define LCD_DATA_PORT  PORTA   //以下3个要设为同一个口 
#define LCD_DATA_DDR   DDRA    //一定要用高4位 
#define LCD_DATA_PIN   PINA 
#define LCD_RS         (1<<PA2) //0x04   portA2       out 
#define LCD_EN         (1<<PA3) //0x08   portA3       out 
#define LCD_DATA       ((1<<PA4)|(1<<PA5)|(1<<PA6)|(1<<PA7)) //0xf0   portA4/5/6/7 out
///////////////////////////////////////////////////////////////////

void LCD_init(void); 
void LCD_en_write(void); 
void LCD_write_command(unsigned  char command) ; 
void LCD_write_data(unsigned char data); 
void LCD_set_xy (unsigned char x, unsigned char y); 
void LCD_write_string(unsigned char X,unsigned char Y,unsigned char *s); 
void LCD_write_char(unsigned char X,unsigned char Y,unsigned char data); 
void delay_nus(unsigned int n); 
void delay_nms(unsigned int n); 
//==============================================================================