Jonne Valola / PokittoLib Featured

PokittoLib is the library needed for programming the Pokitto DIY game console (www.pokitto.com)

Dependents:   YATTT sd_map_test cPong SnowDemo ... more

PokittoLib

Library for programming Pokitto hardware

How to Use

  1. Import this library to online compiler (see button "import" on the right hand side
  2. DO NOT import mbed-src anymore, a better version is now included inside PokittoLib
  3. Change My_settings.h according to your project
  4. Start coding!

POKITTO_CORE/PokittoItoa.cpp@71:531419862202, 2019-12-25 (annotated)

Committer:
Pokitto
Date:
Wed Dec 25 23:59:52 2019 +0000
Revision:
71:531419862202
Parent:
66:6281a40d73e6 
Changed Mode2 C++ refresh code (graphical errors)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Pokitto 31:f4b9b85c7b62 1 /**************************************************************************/
Pokitto 31:f4b9b85c7b62 2 /*!
Pokitto 31:f4b9b85c7b62 3 @file PokittoItoa.cpp
Pokitto 31:f4b9b85c7b62 4 @author Jonne Valola
Pokitto 31:f4b9b85c7b62 5
Pokitto 31:f4b9b85c7b62 6 @section LICENSE
Pokitto 31:f4b9b85c7b62 7
Pokitto 31:f4b9b85c7b62 8 Software License Agreement (BSD License)
Pokitto 31:f4b9b85c7b62 9
Pokitto 31:f4b9b85c7b62 10 Copyright (c) 2016, Jonne Valola
Pokitto 31:f4b9b85c7b62 11 All rights reserved.
Pokitto 31:f4b9b85c7b62 12
Pokitto 31:f4b9b85c7b62 13 Redistribution and use in source and binary forms, with or without
Pokitto 31:f4b9b85c7b62 14 modification, are permitted provided that the following conditions are met:
Pokitto 31:f4b9b85c7b62 15 1. Redistributions of source code must retain the above copyright
Pokitto 31:f4b9b85c7b62 16 notice, this list of conditions and the following disclaimer.
Pokitto 31:f4b9b85c7b62 17 2. Redistributions in binary form must reproduce the above copyright
Pokitto 31:f4b9b85c7b62 18 notice, this list of conditions and the following disclaimer in the
Pokitto 31:f4b9b85c7b62 19 documentation and/or other materials provided with the distribution.
Pokitto 31:f4b9b85c7b62 20 3. Neither the name of the copyright holders nor the
Pokitto 31:f4b9b85c7b62 21 names of its contributors may be used to endorse or promote products
Pokitto 31:f4b9b85c7b62 22 derived from this software without specific prior written permission.
Pokitto 31:f4b9b85c7b62 23
Pokitto 31:f4b9b85c7b62 24 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
Pokitto 31:f4b9b85c7b62 25 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
Pokitto 31:f4b9b85c7b62 26 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
Pokitto 31:f4b9b85c7b62 27 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
Pokitto 31:f4b9b85c7b62 28 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
Pokitto 31:f4b9b85c7b62 29 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
Pokitto 31:f4b9b85c7b62 30 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
Pokitto 31:f4b9b85c7b62 31 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
Pokitto 31:f4b9b85c7b62 32 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
Pokitto 31:f4b9b85c7b62 33 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Pokitto 31:f4b9b85c7b62 34 */
Pokitto 31:f4b9b85c7b62 35 /**************************************************************************/
Pokitto 31:f4b9b85c7b62 36
Pokitto 31:f4b9b85c7b62 37 #include "PokittoItoa.h"
Pokitto 31:f4b9b85c7b62 38 #include <string.h>
Pokitto 31:f4b9b85c7b62 39 #include <stdint.h>
Pokitto 31:f4b9b85c7b62 40
Pokitto 66:6281a40d73e6 41 /* A utility function to reverse a string */
Pokitto 66:6281a40d73e6 42 void reverse(char str[], int length)
Pokitto 66:6281a40d73e6 43 {
Pokitto 66:6281a40d73e6 44 int start = 0;
Pokitto 66:6281a40d73e6 45 int end = length -1;
Pokitto 66:6281a40d73e6 46 while (start < end)
Pokitto 66:6281a40d73e6 47 {
Pokitto 66:6281a40d73e6 48 char t = *(str+end);
Pokitto 66:6281a40d73e6 49 *(str+end) = *(str+start);
Pokitto 66:6281a40d73e6 50 *(str+start) = t;
Pokitto 66:6281a40d73e6 51 //std::swap(*(str+start), *(str+end));
Pokitto 66:6281a40d73e6 52 start++;
Pokitto 66:6281a40d73e6 53 end--;
Pokitto 66:6281a40d73e6 54 }
Pokitto 66:6281a40d73e6 55 }
Pokitto 31:f4b9b85c7b62 56
Pokitto 31:f4b9b85c7b62 57 void pokItoa(uint16_t value, char *str, int base)
Pokitto 31:f4b9b85c7b62 58 {
Pokitto 31:f4b9b85c7b62 59 /** pokItoa: convert value n to characters
Pokitto 31:f4b9b85c7b62 60 * Needed to emulate AVR LibC non-standard functions, this is a very fast version of itoa
Pokitto 31:f4b9b85c7b62 61 *
Pokitto 31:f4b9b85c7b62 62 * @param value unsigned integer to be converted
Pokitto 31:f4b9b85c7b62 63 * @param *str pointer to string where function stores the result as characters
Pokitto 31:f4b9b85c7b62 64 * @param base (not implemented in this function, base is always 10)
Pokitto 31:f4b9b85c7b62 65 */
Pokitto 31:f4b9b85c7b62 66
Pokitto 31:f4b9b85c7b62 67 char *p = str;
Pokitto 31:f4b9b85c7b62 68 uint8_t v;
Pokitto 31:f4b9b85c7b62 69 if (value > 499)
Pokitto 31:f4b9b85c7b62 70 {
Pokitto 31:f4b9b85c7b62 71 if (value > 799)
Pokitto 31:f4b9b85c7b62 72 {
Pokitto 31:f4b9b85c7b62 73 if (value > 999)
Pokitto 31:f4b9b85c7b62 74 {
Pokitto 31:f4b9b85c7b62 75 // Treated as a special case as there
Pokitto 31:f4b9b85c7b62 76 // are only 24 values above 999
Pokitto 31:f4b9b85c7b62 77 *p++ = '1';
Pokitto 31:f4b9b85c7b62 78 *p++ = '0';
Pokitto 31:f4b9b85c7b62 79 uint8_t v = value - 1000;
Pokitto 31:f4b9b85c7b62 80
Pokitto 31:f4b9b85c7b62 81 if (v > 19) { *p++ = '2'; v -= 20; }
Pokitto 31:f4b9b85c7b62 82 else if (v > 9) { *p++ = '1'; v -= 10; }
Pokitto 31:f4b9b85c7b62 83 else { *p++ = '0'; }
Pokitto 31:f4b9b85c7b62 84
Pokitto 31:f4b9b85c7b62 85 *p++ = v + '0';
Pokitto 31:f4b9b85c7b62 86 *p = 0;
Pokitto 31:f4b9b85c7b62 87 return;
Pokitto 31:f4b9b85c7b62 88 }
Pokitto 31:f4b9b85c7b62 89
Pokitto 31:f4b9b85c7b62 90 if (value > 899) { *p++ = '9'; v = value - 900; }
Pokitto 31:f4b9b85c7b62 91 else { *p++ = '8'; v = value - 800; }
Pokitto 31:f4b9b85c7b62 92 }
Pokitto 31:f4b9b85c7b62 93 else
Pokitto 31:f4b9b85c7b62 94 {
Pokitto 31:f4b9b85c7b62 95 if (value > 699) { *p++ = '7'; v = value - 700; }
Pokitto 31:f4b9b85c7b62 96 else if (value > 599) { *p++ = '6'; v = value - 600; }
Pokitto 31:f4b9b85c7b62 97 else { *p++ = '5'; v = value - 500; }
Pokitto 31:f4b9b85c7b62 98 }
Pokitto 31:f4b9b85c7b62 99 }
Pokitto 31:f4b9b85c7b62 100 else
Pokitto 31:f4b9b85c7b62 101 {
Pokitto 31:f4b9b85c7b62 102 if (value > 299)
Pokitto 31:f4b9b85c7b62 103 {
Pokitto 31:f4b9b85c7b62 104 if (value > 399) { *p++ = '4'; v = value - 400; }
Pokitto 31:f4b9b85c7b62 105 else { *p++ = '3'; v = value - 300; }
Pokitto 31:f4b9b85c7b62 106 }
Pokitto 31:f4b9b85c7b62 107 else
Pokitto 31:f4b9b85c7b62 108 {
Pokitto 31:f4b9b85c7b62 109 if (value > 199) { *p++ = '2'; v = value - 200; }
Pokitto 31:f4b9b85c7b62 110 else if (value > 99) { *p++ = '1'; v = value - 100; }
Pokitto 31:f4b9b85c7b62 111 else { v = value; }
Pokitto 31:f4b9b85c7b62 112 }
Pokitto 31:f4b9b85c7b62 113 }
Pokitto 31:f4b9b85c7b62 114
Pokitto 31:f4b9b85c7b62 115 if (v > 49)
Pokitto 31:f4b9b85c7b62 116 {
Pokitto 31:f4b9b85c7b62 117 if (v > 69)
Pokitto 31:f4b9b85c7b62 118 {
Pokitto 31:f4b9b85c7b62 119 if (v > 89) { *p++ = '9'; v -= 90; }
Pokitto 31:f4b9b85c7b62 120 else if (v > 79) { *p++ = '8'; v -= 80; }
Pokitto 31:f4b9b85c7b62 121 else { *p++ = '7'; v -= 70; }
Pokitto 31:f4b9b85c7b62 122 }
Pokitto 31:f4b9b85c7b62 123 else
Pokitto 31:f4b9b85c7b62 124 {
Pokitto 31:f4b9b85c7b62 125 if (v > 59) { *p++ = '6'; v -= 60; }
Pokitto 31:f4b9b85c7b62 126 else { *p++ = '5'; v -= 50; }
Pokitto 31:f4b9b85c7b62 127 }
Pokitto 31:f4b9b85c7b62 128 }
Pokitto 31:f4b9b85c7b62 129 else
Pokitto 31:f4b9b85c7b62 130 {
Pokitto 31:f4b9b85c7b62 131 if (v > 19)
Pokitto 31:f4b9b85c7b62 132 {
Pokitto 31:f4b9b85c7b62 133 if (v > 39) { *p++ = '4'; v -= 40; }
Pokitto 31:f4b9b85c7b62 134 else if (v > 29) { *p++ = '3'; v -= 30; }
Pokitto 31:f4b9b85c7b62 135 else { *p++ = '2'; v -= 20; }
Pokitto 31:f4b9b85c7b62 136 }
Pokitto 31:f4b9b85c7b62 137 else
Pokitto 31:f4b9b85c7b62 138 {
Pokitto 31:f4b9b85c7b62 139 if (v > 9) { *p++ = '1'; v -= 10; }
Pokitto 31:f4b9b85c7b62 140 else if (p != str) { *p++ = '0'; }
Pokitto 31:f4b9b85c7b62 141 }
Pokitto 31:f4b9b85c7b62 142 }
Pokitto 31:f4b9b85c7b62 143
Pokitto 31:f4b9b85c7b62 144 *p++ = v + '0';
Pokitto 31:f4b9b85c7b62 145 *p = 0;
Pokitto 31:f4b9b85c7b62 146 }
Pokitto 31:f4b9b85c7b62 147
Pokitto 31:f4b9b85c7b62 148 void pokUtoa(uint16_t value, char *str, int base) {
Pokitto 31:f4b9b85c7b62 149 pokItoa(value,str,base);
Pokitto 31:f4b9b85c7b62 150 }
Pokitto 31:f4b9b85c7b62 151
Pokitto 66:6281a40d73e6 152 void pokLtoa(long num, char *str, int base) {
Pokitto 66:6281a40d73e6 153 int i = 0;
Pokitto 66:6281a40d73e6 154 bool isNegative = false;
Pokitto 66:6281a40d73e6 155
Pokitto 66:6281a40d73e6 156 /* Handle 0 explicitely, otherwise empty string is printed for 0 */
Pokitto 66:6281a40d73e6 157 if (num == 0)
Pokitto 66:6281a40d73e6 158 {
Pokitto 66:6281a40d73e6 159 str[i++] = '0';
Pokitto 66:6281a40d73e6 160 str[i] = '\0';
Pokitto 66:6281a40d73e6 161 return;// str;
Pokitto 66:6281a40d73e6 162 }
Pokitto 66:6281a40d73e6 163
Pokitto 66:6281a40d73e6 164 // In standard itoa(), negative numbers are handled only with
Pokitto 66:6281a40d73e6 165 // base 10. Otherwise numbers are considered unsigned.
Pokitto 66:6281a40d73e6 166 if (num < 0 && base == 10)
Pokitto 66:6281a40d73e6 167 {
Pokitto 66:6281a40d73e6 168 isNegative = true;
Pokitto 66:6281a40d73e6 169 num = -num;
Pokitto 66:6281a40d73e6 170 }
Pokitto 66:6281a40d73e6 171
Pokitto 66:6281a40d73e6 172 // Process individual digits
Pokitto 66:6281a40d73e6 173 while (num != 0)
Pokitto 66:6281a40d73e6 174 {
Pokitto 66:6281a40d73e6 175 int rem = num % base;
Pokitto 66:6281a40d73e6 176 str[i++] = (rem > 9)? (rem-10) + 'a' : rem + '0';
Pokitto 66:6281a40d73e6 177 num = num/base;
Pokitto 66:6281a40d73e6 178 }
Pokitto 66:6281a40d73e6 179
Pokitto 66:6281a40d73e6 180 // If number is negative, append '-'
Pokitto 66:6281a40d73e6 181 if (isNegative)
Pokitto 66:6281a40d73e6 182 str[i++] = '-';
Pokitto 66:6281a40d73e6 183
Pokitto 66:6281a40d73e6 184 str[i] = '\0'; // Append string terminator
Pokitto 66:6281a40d73e6 185
Pokitto 66:6281a40d73e6 186 // Reverse the string
Pokitto 66:6281a40d73e6 187 reverse(str, i);
Pokitto 66:6281a40d73e6 188
Pokitto 66:6281a40d73e6 189 return;// str;
Pokitto 31:f4b9b85c7b62 190 }
Pokitto 31:f4b9b85c7b62 191
Pokitto 31:f4b9b85c7b62 192