lcd.h

几个模块程序 包括IIc 初始化 读写操作 2*16LcD 初始化 显示程序 4*4键盘键盘扫描程序

/*-----------------------------------------------
LED.H

------------------------------------------------*/

#ifndef __LED_H__
#define __LED_H__

//定义显示命令常数
#define DISP_BUSY   0x80
#define DISP_FUNC   0x38
#define DISP_ENTRY  0x06
#define DISP_CNTL   0x08
#define DISP_ON     0x04
#define DISP_CURSOR 0x02
#define DISP_CLEAR  0x01
#define DISP_HOME   0x02
#define DISP_POS    0x80
#define DISP_LINE2  0x40

#define TO_POS      0x11

sbit ENABLE = P3 ^ 1;
sbit REGSEL = P3 ^ 7;
sbit RDWR = P3 ^ 6;

sfr DISPDATA = 0x90;

extern unsigned char disp_read(void);
extern void disp_cmd   (unsigned char);
extern void disp_write (unsigned char);
extern void disp_init  (void);
extern void display_lcd(unsigned char *, unsigned char);

#endif