lcd_h.h

基于51单片机ds1302温度测量源码加仿真

//#include <at89x51.h>
/*LCD command*/
#define   twoline_8bit       0x38     
#define   oneline_8bit       0x34     
#define   CLEAR              0x01
#define   CURSOR_HOME        0x02
#define   CURSOR_RIGHT       0x06     
#define   CURSOR_LEFT        0x04
#define   CURSOR_OFF         0x0C
#define   CURSOR_ON          0x0E
#define   CURSOR_0N_BLINK    0x0F
#define   GOTO_LINE_2        0xC0
#define   GOTO_LINE_1        0x80
#define   text_move          0x07

/*LCD control lines*/
#define   ENABLE             1
#define   DISABLE            0
#define   READ               1
#define   WRITE              0
#define   COMMAND            0
#define   DATA               1
#define   rs              P3_7
#define   rw              P3_6
#define   enable          P3_5

void init_LCD(void);
void write_LCD_command(unsigned);
void clear_LCD(void);
void display_LCD_string(char *);
void movexy(unsigned,unsigned);
void delay(void);
void write_LCD_data(unsigned);
void delayms(unsigned char);