Meindert Kuipers / Mbed 2 deprecated MMEx_Challenge

MMEx with SPI Slave to allow legacy devices to communicate with modern media such as USB, SD cards, the internet and all of the mbed\'s other interfaces

Dependencies:   NetServices MSCUsbHost mbed TMP102 SDFileSystem

helper.cpp@0:67a55a82ce06, 2011-02-27 (annotated)

Committer:
DeMein
Date:
Sun Feb 27 18:54:40 2011 +0000
Revision:
0:67a55a82ce06
Version as submitted to the NXP Design Challenge

Who changed what in which revision?

UserRevisionLine numberNew contents of line
DeMein 0:67a55a82ce06 1 /* MMEx for MBED - Support functions
DeMein 0:67a55a82ce06 2 * Copyright (c) 2011 MK
DeMein 0:67a55a82ce06 3 *
DeMein 0:67a55a82ce06 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
DeMein 0:67a55a82ce06 5 * of this software and associated documentation files (the "Software"), to deal
DeMein 0:67a55a82ce06 6 * in the Software without restriction, including without limitation the rights
DeMein 0:67a55a82ce06 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
DeMein 0:67a55a82ce06 8 * copies of the Software, and to permit persons to whom the Software is
DeMein 0:67a55a82ce06 9 * furnished to do so, subject to the following conditions:
DeMein 0:67a55a82ce06 10 *
DeMein 0:67a55a82ce06 11 * The above copyright notice and this permission notice shall be included in
DeMein 0:67a55a82ce06 12 * all copies or substantial portions of the Software.
DeMein 0:67a55a82ce06 13 *
DeMein 0:67a55a82ce06 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
DeMein 0:67a55a82ce06 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
DeMein 0:67a55a82ce06 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
DeMein 0:67a55a82ce06 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
DeMein 0:67a55a82ce06 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
DeMein 0:67a55a82ce06 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
DeMein 0:67a55a82ce06 20 * THE SOFTWARE.
DeMein 0:67a55a82ce06 21 */
DeMein 0:67a55a82ce06 22
DeMein 0:67a55a82ce06 23 /**
DeMein 0:67a55a82ce06 24 \file helper.cpp
DeMein 0:67a55a82ce06 25 \brief various support functions for the MMEx
DeMein 0:67a55a82ce06 26 */
DeMein 0:67a55a82ce06 27
DeMein 0:67a55a82ce06 28 #include "helper.h"
DeMein 0:67a55a82ce06 29
DeMein 0:67a55a82ce06 30 /** remove all spaces from a string
DeMein 0:67a55a82ce06 31 *
DeMein 0:67a55a82ce06 32 * @param src the string to be modified
DeMein 0:67a55a82ce06 33 *
DeMein 0:67a55a82ce06 34 */
DeMein 0:67a55a82ce06 35 void wipesp(char *src) {
DeMein 0:67a55a82ce06 36 // remove all spaces from a string
DeMein 0:67a55a82ce06 37 char *dst = src;
DeMein 0:67a55a82ce06 38
DeMein 0:67a55a82ce06 39 while (*src != 0) {
DeMein 0:67a55a82ce06 40 if (*src != c_space) {
DeMein 0:67a55a82ce06 41 *dst++ = *src; // copy
DeMein 0:67a55a82ce06 42 }
DeMein 0:67a55a82ce06 43 src++;
DeMein 0:67a55a82ce06 44 }
DeMein 0:67a55a82ce06 45 *dst = 0;
DeMein 0:67a55a82ce06 46 }
DeMein 0:67a55a82ce06 47
DeMein 0:67a55a82ce06 48 /** remove part of a string
DeMein 0:67a55a82ce06 49 *
DeMein 0:67a55a82ce06 50 * @param src the string to be modified
DeMein 0:67a55a82ce06 51 * pos start position for removing characters
DeMein 0:67a55a82ce06 52 * len number of characters to remove
DeMein 0:67a55a82ce06 53 *
DeMein 0:67a55a82ce06 54 */
DeMein 0:67a55a82ce06 55 void remchar(char *src, int pos, int len) {
DeMein 0:67a55a82ce06 56 char *dst = src;
DeMein 0:67a55a82ce06 57 int i = 0;
DeMein 0:67a55a82ce06 58
DeMein 0:67a55a82ce06 59 if (pos < 0) return;
DeMein 0:67a55a82ce06 60 if (len < 0) return;
DeMein 0:67a55a82ce06 61
DeMein 0:67a55a82ce06 62 src += pos;
DeMein 0:67a55a82ce06 63 dst = src;
DeMein 0:67a55a82ce06 64 src += len;
DeMein 0:67a55a82ce06 65 for ( i = pos + 1; *src != 0; i++ ) *dst++ = *src++;
DeMein 0:67a55a82ce06 66 *dst = 0; // Ensure the string is null-terminated.
DeMein 0:67a55a82ce06 67 }
DeMein 0:67a55a82ce06 68
DeMein 0:67a55a82ce06 69 /** convert a hex char '0' to 'F' in its decimal equivalent
DeMein 0:67a55a82ce06 70 *
DeMein 0:67a55a82ce06 71 * @param C character
DeMein 0:67a55a82ce06 72 * @return a value 0 to 15, 0 when C was not in '0'..'F'
DeMein 0:67a55a82ce06 73 *
DeMein 0:67a55a82ce06 74 */
DeMein 0:67a55a82ce06 75 int hex2int(char C) {
DeMein 0:67a55a82ce06 76 if ((C >= '0') && (C <= '9')) return(C - '0');
DeMein 0:67a55a82ce06 77 if ((C >= 'A') && (C <= 'F')) return(C - 'A' + 10);
DeMein 0:67a55a82ce06 78 return(0);
DeMein 0:67a55a82ce06 79 }
DeMein 0:67a55a82ce06 80
DeMein 0:67a55a82ce06 81 /** insert a string in another string
DeMein 0:67a55a82ce06 82 *
DeMein 0:67a55a82ce06 83 * @param str1 target string where insert takes place in
DeMein 0:67a55a82ce06 84 * @param str2 string to be inserted
DeMein 0:67a55a82ce06 85 * @param pos position of insertion
DeMein 0:67a55a82ce06 86 *
DeMein 0:67a55a82ce06 87 */
DeMein 0:67a55a82ce06 88 void insertstr(char *str1, char *str2, int pos) {
DeMein 0:67a55a82ce06 89 int i;
DeMein 0:67a55a82ce06 90 int sz1 = 0; // size of str1
DeMein 0:67a55a82ce06 91 int sz2 = 0; // size of str2
DeMein 0:67a55a82ce06 92 char *dst = str1; // save start of str1
DeMein 0:67a55a82ce06 93 char *end = str1; // end of str1
DeMein 0:67a55a82ce06 94
DeMein 0:67a55a82ce06 95 for (i = 0; str1[i] != 0; i++) sz1++; // length of string1
DeMein 0:67a55a82ce06 96 for (i = 0; str2[i] != 0; i++) sz2++; // length of string2
DeMein 0:67a55a82ce06 97
DeMein 0:67a55a82ce06 98 str1 += pos; // insert point
DeMein 0:67a55a82ce06 99 end += sz1; // end of string 1
DeMein 0:67a55a82ce06 100 dst += sz1 + sz2; // end of new string
DeMein 0:67a55a82ce06 101
DeMein 0:67a55a82ce06 102 // now move the end of str1 to make room
DeMein 0:67a55a82ce06 103 for (i = 0; i <= sz2; i++) *dst-- = *end--;
DeMein 0:67a55a82ce06 104
DeMein 0:67a55a82ce06 105 // and move str2 in the free space inside str1
DeMein 0:67a55a82ce06 106 for (i = 0; i < sz2; i++) *str1++ = *str2++;
DeMein 0:67a55a82ce06 107 }
DeMein 0:67a55a82ce06 108
DeMein 0:67a55a82ce06 109 /** convert a string to upper case if global variable upcase is true
DeMein 0:67a55a82ce06 110 *
DeMein 0:67a55a82ce06 111 * @param str string to modify
DeMein 0:67a55a82ce06 112 */
DeMein 0:67a55a82ce06 113 void upstring(char * str) {
DeMein 0:67a55a82ce06 114 if (upcase) {
DeMein 0:67a55a82ce06 115 while (*str != NULL) {
DeMein 0:67a55a82ce06 116 if ((*str >= 'a') && (*str <= 'z')) *str = *str - 0x20;
DeMein 0:67a55a82ce06 117 str++;
DeMein 0:67a55a82ce06 118 }
DeMein 0:67a55a82ce06 119 }
DeMein 0:67a55a82ce06 120 }
DeMein 0:67a55a82ce06 121
DeMein 0:67a55a82ce06 122