|
| 1 | +/* |
| 2 | + Print.cpp - Base class that provides print() and println() |
| 3 | + Copyright (c) 2008 David A. Mellis. All right reserved. |
| 4 | + |
| 5 | + This library is free software; you can redistribute it and/or |
| 6 | + modify it under the terms of the GNU Lesser General Public |
| 7 | + License as published by the Free Software Foundation; either |
| 8 | + version 2.1 of the License, or (at your option) any later version. |
| 9 | + |
| 10 | + This library is distributed in the hope that it will be useful, |
| 11 | + but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | + Lesser General Public License for more details. |
| 14 | + |
| 15 | + You should have received a copy of the GNU Lesser General Public |
| 16 | + License along with this library; if not, write to the Free Software |
| 17 | + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | + |
| 19 | + Modified 23 November 2006 by David A. Mellis |
| 20 | + Modified 03 August 2015 by Chuck Todd |
| 21 | + */ |
| 22 | + |
| 23 | +#ifdef _GCC_ |
| 24 | +#include <stdint.h> |
| 25 | +#include <stdio.h> |
| 26 | +#define PROGMEM |
| 27 | +#endif |
| 28 | + |
| 29 | +//#include <stdlib.h> |
| 30 | +//#include <stdio.h> |
| 31 | +//#include <string.h> |
| 32 | +#include <math.h> |
| 33 | +#include "Arduino.h" |
| 34 | + |
| 35 | +#include "Print.h" |
| 36 | + |
| 37 | +#ifdef _GCC_ |
| 38 | +#undef printChr |
| 39 | +#define printChr(C) putchar(C) |
| 40 | +#endif |
| 41 | + |
| 42 | + |
| 43 | +void printNL(void); |
| 44 | + |
| 45 | +// Public Methods ////////////////////////////////////////////////////////////// |
| 46 | + |
| 47 | +size_t printBuf(const uint8_t *buffer, size_t size) |
| 48 | +{ |
| 49 | + size_t n = 0; |
| 50 | + while (size--) { |
| 51 | + if (printChr(*buffer++)) n++; |
| 52 | + else break; |
| 53 | + } |
| 54 | + return n; |
| 55 | +} |
| 56 | + |
| 57 | +size_t printStr(const char *str) |
| 58 | +{ |
| 59 | + size_t n = 0; |
| 60 | + char c; |
| 61 | + |
| 62 | + if (!str) return 0; |
| 63 | + |
| 64 | + while ( c=*str++ ) { // assignment intented |
| 65 | + if (printChr(c)) n++; |
| 66 | + else break; |
| 67 | + } |
| 68 | + return n; |
| 69 | +} |
| 70 | + |
| 71 | + |
| 72 | +size_t Print_print_u(unsigned long n) |
| 73 | +{ |
| 74 | + return printNumber(n,10); |
| 75 | +} |
| 76 | + |
| 77 | +size_t Print_print_i(long n) |
| 78 | +{ |
| 79 | + return printInt(n,10); |
| 80 | +} |
| 81 | + |
| 82 | +size_t Print_println_u(unsigned long n) |
| 83 | +{ |
| 84 | + size_t r; |
| 85 | + |
| 86 | + r = printNumber(n,10); |
| 87 | + return r + println(); |
| 88 | +} |
| 89 | + |
| 90 | +size_t Print_println_i(long n) |
| 91 | +{ |
| 92 | + size_t r; |
| 93 | + |
| 94 | + r = printInt(n,10); |
| 95 | + return r + println(); |
| 96 | +} |
| 97 | + |
| 98 | + |
| 99 | +/* |
| 100 | +size_t Print::print(long n, int base) |
| 101 | +{ |
| 102 | + if (base == 0) { |
| 103 | + return write(n); |
| 104 | + } else if (base == 10) { |
| 105 | + if (n < 0) { |
| 106 | + int t = print('-'); |
| 107 | + n = -n; |
| 108 | + return printNumber(n, 10) + t; |
| 109 | + } |
| 110 | + return printNumber(n, 10); |
| 111 | + } else { |
| 112 | + return printNumber(n, base); |
| 113 | + } |
| 114 | +} |
| 115 | +
|
| 116 | +size_t Print::print(unsigned long n, int base) |
| 117 | +{ |
| 118 | + if (base == 0) return write(n); |
| 119 | + else return printNumber(n, base); |
| 120 | +} |
| 121 | +
|
| 122 | +size_t Print::print(double n, int digits) |
| 123 | +{ |
| 124 | + return printFloat(n, digits); |
| 125 | +} |
| 126 | +
|
| 127 | +size_t Print::println(const __FlashStringHelper *ifsh) |
| 128 | +{ |
| 129 | + size_t n = print(ifsh); |
| 130 | + n += println(); |
| 131 | + return n; |
| 132 | +} |
| 133 | +
|
| 134 | +size_t Print::print(const Printable& x) |
| 135 | +{ |
| 136 | + return x.printTo(*this); |
| 137 | +} |
| 138 | +
|
| 139 | +size_t Print::println(void) |
| 140 | +{ |
| 141 | + return write("\r\n"); |
| 142 | +} |
| 143 | +
|
| 144 | +size_t Print::println(const String &s) |
| 145 | +{ |
| 146 | + size_t n = print(s); |
| 147 | + n += println(); |
| 148 | + return n; |
| 149 | +} |
| 150 | +
|
| 151 | +size_t Print::println(const char c[]) |
| 152 | +{ |
| 153 | + size_t n = print(c); |
| 154 | + n += println(); |
| 155 | + return n; |
| 156 | +} |
| 157 | +
|
| 158 | +size_t Print::println(char c) |
| 159 | +{ |
| 160 | + size_t n = print(c); |
| 161 | + n += println(); |
| 162 | + return n; |
| 163 | +} |
| 164 | +
|
| 165 | +size_t Print::println(unsigned char b, int base) |
| 166 | +{ |
| 167 | + size_t n = print(b, base); |
| 168 | + n += println(); |
| 169 | + return n; |
| 170 | +} |
| 171 | +
|
| 172 | +size_t Print::println(int num, int base) |
| 173 | +{ |
| 174 | + size_t n = print(num, base); |
| 175 | + n += println(); |
| 176 | + return n; |
| 177 | +} |
| 178 | +
|
| 179 | +size_t Print::println(unsigned int num, int base) |
| 180 | +{ |
| 181 | + size_t n = print(num, base); |
| 182 | + n += println(); |
| 183 | + return n; |
| 184 | +} |
| 185 | +
|
| 186 | +size_t Print::println(long num, int base) |
| 187 | +{ |
| 188 | + size_t n = print(num, base); |
| 189 | + n += println(); |
| 190 | + return n; |
| 191 | +} |
| 192 | +
|
| 193 | +size_t Print::println(unsigned long num, int base) |
| 194 | +{ |
| 195 | + size_t n = print(num, base); |
| 196 | + n += println(); |
| 197 | + return n; |
| 198 | +} |
| 199 | +
|
| 200 | +size_t Print::println(double num, int digits) |
| 201 | +{ |
| 202 | + size_t n = print(num, digits); |
| 203 | + n += println(); |
| 204 | + return n; |
| 205 | +} |
| 206 | +
|
| 207 | +size_t Print::println(const Printable& x) |
| 208 | +{ |
| 209 | + size_t n = print(x); |
| 210 | + n += println(); |
| 211 | + return n; |
| 212 | +} |
| 213 | +*/ |
| 214 | +// Private Methods ///////////////////////////////////////////////////////////// |
| 215 | + |
| 216 | +size_t println(void) |
| 217 | +{ |
| 218 | + printChr(13); |
| 219 | + printChr(10); |
| 220 | + return 2; |
| 221 | +} |
| 222 | + |
| 223 | + |
| 224 | +size_t printNumber(unsigned long n, uint8_t base) |
| 225 | +{ |
| 226 | + char buf[8 * sizeof(long) + 1]; // Assumes 8-bit chars plus zero byte. |
| 227 | + char *str = &buf[sizeof(buf) - 1]; |
| 228 | + |
| 229 | + *str = '\0'; |
| 230 | + |
| 231 | + // prevent crash if called with base == 1 |
| 232 | + if (base < 2) base = 10; |
| 233 | + |
| 234 | + do { |
| 235 | + char c = n % base; |
| 236 | + n /= base; |
| 237 | + |
| 238 | + *--str = c < 10 ? c + '0' : c + 'A' - 10; |
| 239 | + } while(n); |
| 240 | + |
| 241 | + return printStr(str); |
| 242 | +} |
| 243 | + |
| 244 | +size_t printInt(long n, uint8_t base) |
| 245 | +{ |
| 246 | + if (base == 0) { |
| 247 | + return printChr((unsigned char) n); |
| 248 | + } else if (base == 10) { |
| 249 | + if (n < 0) { |
| 250 | + int t = printChr('-'); |
| 251 | + n = -n; |
| 252 | + return printNumber(n, 10) + t; |
| 253 | + } |
| 254 | + return printNumber(n, 10); |
| 255 | + } else { |
| 256 | + return printNumber(n, base); |
| 257 | + } |
| 258 | +} |
| 259 | + |
| 260 | + |
| 261 | +size_t Print_printFloat(double number, uint8_t digits) |
| 262 | +{ |
| 263 | + size_t n = 0; |
| 264 | + uint8_t i; |
| 265 | + unsigned long int_part; |
| 266 | + double remainder, rounding; |
| 267 | + unsigned int toPrint; |
| 268 | + |
| 269 | + if (isnan(number)) return printStr("nan"); |
| 270 | + if (isinf(number)) return printStr("inf"); |
| 271 | + if (number > 4294967040.0) return printStr ("ovf"); // constant determined empirically |
| 272 | + if (number <-4294967040.0) return printStr ("ovf"); // constant determined empirically |
| 273 | + |
| 274 | + // Handle negative numbers |
| 275 | + if (number < 0.0) |
| 276 | + { |
| 277 | + n += printChr('-'); |
| 278 | + number = -number; |
| 279 | + } |
| 280 | + |
| 281 | + // Round correctly so that print(1.999, 2) prints as "2.00" |
| 282 | + rounding = 0.5; |
| 283 | + for (i=0; i<digits; ++i) |
| 284 | + rounding /= 10.0; |
| 285 | + |
| 286 | + number += rounding; |
| 287 | + |
| 288 | + // Extract the integer part of the number and print it |
| 289 | + int_part = (unsigned long)number; |
| 290 | + remainder = number - (double)int_part; |
| 291 | + n += printNumber(int_part,10); |
| 292 | + |
| 293 | + // Print the decimal point, but only if there are digits beyond |
| 294 | + if (digits > 0) { |
| 295 | + n += printChr('.'); |
| 296 | + } |
| 297 | + |
| 298 | + // Extract digits from the remainder one at a time |
| 299 | + while (digits-- > 0) |
| 300 | + { |
| 301 | + remainder *= 10.0; |
| 302 | + toPrint = (unsigned int)(remainder); |
| 303 | + n += printNumber(toPrint,10); |
| 304 | + remainder -= toPrint; |
| 305 | + } |
| 306 | + |
| 307 | + return n; |
| 308 | +} |
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