lcd12864.h

液晶WGM12864的驱动程序和显示

#ifndef _lcd12864_h_
#define _lcd12864_h_

#include <reg52.h>
#include <intrins.h>

#define dataline P0
 

sbit BUSY = P0^7;
sbit DI   = P2^5;//D/I＝"H"，表示DB7~DB0为显示数据   D/I＝"L"，表示DB7~DB0为显示指令数据
sbit RW   = P2^6;//R/W＝"H"，E＝"H"，数据被读到DB7~DB0   R/W＝"L"，E＝"H→L",DB7~DB0的数据被写到IR或DR
sbit E    = P2^7;//使能信号：R/W＝"L"，E信号下降沿锁存DB7~DB0   R/W＝"H"，E＝"H"DRAM数据读到DB7~DB0
sbit CSA  = P2^4;//显示右半屏
sbit CSB  = P2^3;//显示左半屏

void delay( int x );
void write_l_cmd( unsigned char cmd );//写左半屏指令
void write_r_cmd( unsigned char cmd );//写右半屏指令
void write_l_dat( unsigned char dat );//写左半屏数据
void write_r_dat( unsigned char dat );//写右半屏数据
void write_dat( unsigned char xpos,unsigned char upos,unsigned char lcddat );
void hz_disp( unsigned char x,unsigned char y,unsigned char *hz );
void lcd_clr( );
void lcd_init( );
void disp_img( unsigned char code *img );
void read_l_dat( );
void read_r_dat( );

#endif