avr库函数,方便你加到你的系统里!!! !!

				/*! \file input.h \brief User-Input Functions. */
				//*****************************************************************************
				//
				// File Name	: 'input.h'
				// Title		: User-Input Functions
				// Author		: Pascal Stang - Copyright (C) 2003
				// Created		: 2003.09.11
				// Revised		: 2003.09.11
				// Version		: 0.1
				// Target MCU	: Atmel AVR series
				// Editor Tabs	: 4
				//
				// This code is distributed under the GNU Public License
				//		which can be found at http://www.gnu.org/licenses/gpl.txt
				//
				//*****************************************************************************
				
				#ifndef INPUT_H
				#define INPUT_H
				
				// functions
				u08 inputString(u08 termChar, u08 termLen, u08* data);
				u08 asciiHexToByte(u08* string);
				u08 asciiHexToNibble(u08 character);
				
				#endif