方便飞利浦arm7tdmi 处理器lpc2100开发的C函数库 Procyon ARMlib-LPC2100 C-Language Function Library for Philips LPC21

				/*! \file input.c \brief User-Input Functions. */
				//*****************************************************************************
				//
				// File Name	: 'input.c'
				// Title		: User-Input Functions
				// Author		: Pascal Stang - Copyright (C) 2003
				// Created		: 2003.09.11
				// Revised		: 2003.09.11
				// Version		: 0.1
				// Target MCU	: any
				// Editor Tabs	: 4
				//
				// This code is distributed under the GNU Public License
				//		which can be found at http://www.gnu.org/licenses/gpl.txt
				//
				//*****************************************************************************
				
				//----- Include Files ---------------------------------------------------------
				#include "global.h"		// include our global settings
				#include "uart.h"
				#include "rprintf.h"	// include printf function library
				
				#include "input.h"
				
				// globals
				
				// functions
				u08 inputString(u08 termChar, u08 termLen, u08* data)
				{
					int s=-1;
					u08 length=0;
				
					while(length < termLen)
					{
						// get input
						s = -1;
						while(s == -1)
						{
							s = uart1GetByte();
						}
					
						// handle special characters
						if(s == 0x08)			// backspace
						{
							if(length > 0)
							{
								// echo backspace-space-backspace
								rprintfChar(0x08);
								rprintfChar(' ');
								rprintfChar(0x08);
								length--;
							}
						}
						else if(s == termChar)	// termination character
						{
							// save null-termination
							data[length] = 0;
							break;
						}
						else
						{
							// echo character
							rprintfChar(s);
							// save character
							data[length++] = s;
						}
					}
					return length;
				}
				
				u08 asciiHexToByte(u08* string)
				{
					// convert 2-byte hex string to byte
					return (asciiHexToNibble(string[0])				}
				
				u08 asciiHexToNibble(u08 character)
				{
					// convert 1-byte hex ascii character to nibble
					if((character >= 0x30) && (character 						return character-0x30;
					else if((character >=  'A') && (character 						return character-'A'+10;
					else if((character >=  'a') && (character 						return character-'a'+10;
					else return 0;
				}