#define uchar unsigned char
#define uint unsigned int
#define true    1
#define false   0   
#define LCDMaxChar 32

//LCD Module interface
sbit en_lcd = P2^5;
sbit rw_lcd = P2^6;
sbit rs_lcd	= P2^7;

//Key scan interface
sbit function = P2^2;		//function select;
sbit up		=	P2^1;		//+ function;
sbit down	=	P2^0;		//- function;

//beeper control;
sbit beeper	=	P3^0;	

//DS1302 SPI interface
sbit SCLK = P3^3;
sbit IO   = P3^4;
sbit RST  = P3^5;