io_assign.h

C51 LCD 显示程序非常具有参考价值

////-------------V型机液显屏IO分配----------------------------------///
#ifndef io_assign_h
#define io_assign_h
sfr     AUXR=0x8e;//适用于89c51rd系列
//sbit    EXTRAM=0x8e^1;
    
sbit	MCS1 =		P1^2;
sbit	MCS2 =		P1^3;
sbit	MCS3 =		P1^4;
sbit	LCDE =    	P1^6;	//select lcd,1 is selected
sbit    A18 = P1^5;
sbit	A16 =	P1^7;//作A16
sbit	BLIGHT =	P3^5;
//bit	EEPCE =		P1^0; 	//X5045 喂狗信号//板上网络号DOGCS 
sbit	EEPSI =      	P2^4; 	//X5045  A12 //未用 2004.06.21
sbit	EEPSO =      	P2^5; 	//X5045	 A13 //未用 2004.06.21
sbit	EEPSCK =	P2^6; 	//X5045  A14 //未用 2004.06.21
sbit    BEEP  =         P1^0; //
sbit	LCDRWIO =	P3^6;
sbit	LCDDIIO =	P3^7;

sbit	CONRX =		P3^2; //接收DGPS 与主机讯号选择。1：主机 0：DGPS
sbit	RXD2 =		P3^3;//INT1：主机RXD的检测线，主机优先于GPS数据接收。
sbit	A17 =		P3^4;

sbit	IRIN =		P1^1;//T1作红外接收用
#endif