Rev 1 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | ingob | 1 | /* |
| 2 | Copyright (C) 1993 Free Software Foundation |
||
| 3 | |||
| 4 | This file is part of the GNU IO Library. This library is free |
||
| 5 | software; you can redistribute it and/or modify it under the |
||
| 6 | terms of the GNU General Public License as published by the |
||
| 7 | Free Software Foundation; either version 2, or (at your option) |
||
| 8 | 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 |
||
| 13 | GNU General Public License for more details. |
||
| 14 | |||
| 15 | You should have received a copy of the GNU General Public License |
||
| 16 | along with this library; see the file COPYING. If not, write to the Free |
||
| 17 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
||
| 18 | |||
| 19 | As a special exception, if you link this library with files |
||
| 20 | compiled with a GNU compiler to produce an executable, this does not cause |
||
| 21 | the resulting executable to be covered by the GNU General Public License. |
||
| 22 | This exception does not however invalidate any other reasons why |
||
| 23 | the executable file might be covered by the GNU General Public License. */ |
||
| 24 | |||
| 25 | /* |
||
| 26 | * Copyright (c) 1990 Regents of the University of California. |
||
| 27 | * All rights reserved. |
||
| 28 | * |
||
| 29 | * Redistribution and use in source and binary forms, with or without |
||
| 30 | * modification, are permitted provided that the following conditions |
||
| 31 | * are met: |
||
| 32 | * 1. Redistributions of source code must retain the above copyright |
||
| 33 | * notice, this list of conditions and the following disclaimer. |
||
| 34 | * 2. Redistributions in binary form must reproduce the above copyright |
||
| 35 | * notice, this list of conditions and the following disclaimer in the |
||
| 36 | * documentation and/or other materials provided with the distribution. |
||
| 37 | * 3. [rescinded 22 July 1999] |
||
| 38 | * 4. Neither the name of the University nor the names of its contributors |
||
| 39 | * may be used to endorse or promote products derived from this software |
||
| 40 | * without specific prior written permission. |
||
| 41 | * |
||
| 42 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
||
| 43 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
||
| 44 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
||
| 45 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
||
| 46 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
||
| 47 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
||
| 48 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
||
| 49 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
||
| 50 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
||
| 51 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
||
| 52 | * SUCH DAMAGE. |
||
| 53 | */ |
||
| 54 | |||
| 55 | /* * **************************************************************************** |
||
| 56 | This file is a patched version of printf called _printf_P |
||
| 57 | It is made to work with avr-gcc for Atmel AVR MCUs. |
||
| 58 | There are some differences from standard printf: |
||
| 59 | 1. There is no floating point support (with fp the code is about 8K!) |
||
| 60 | 2. Return type is void |
||
| 61 | 3. Format string must be in program memory (by using macro printf this is |
||
| 62 | done automaticaly) |
||
| 63 | 4. %n is not implemented (just remove the comment around it if you need it) |
||
| 64 | 5. If LIGHTPRINTF is defined, the code is about 550 bytes smaller and the |
||
| 65 | folowing specifiers are disabled : |
||
| 66 | space # * . - + p s o O |
||
| 67 | 6. A function void uart_sendchar(char c) is used for output. The UART must |
||
| 68 | be initialized before using printf. |
||
| 69 | |||
| 70 | Alexander Popov |
||
| 71 | sasho@vip.orbitel.bg |
||
| 72 | ****************************************************************************** |
||
| 73 | Changed file to work with LPC - ARM. |
||
| 74 | Ingo Busker |
||
| 75 | busker@mikrocontroller.com 02.2005 |
||
| 76 | ******************************************************************************/ |
||
| 77 | |||
| 78 | |||
| 79 | /* |
||
| 80 | * Actual printf innards. |
||
| 81 | * |
||
| 82 | * This code is large and complicated... |
||
| 83 | */ |
||
| 84 | |||
| 85 | #include <string.h> |
||
| 86 | #ifdef __STDC__ |
||
| 87 | #include <stdarg.h> |
||
| 88 | #else |
||
| 89 | #include <varargs.h> |
||
| 90 | #endif |
||
| 91 | |||
| 92 | #include "main.h" |
||
| 93 | |||
| 94 | |||
| 95 | //#define LIGHTPRINTF |
||
| 96 | char Putchar(char zeichen) |
||
| 97 | { |
||
| 98 | DisplayBuff[DispPtr++] = zeichen; |
||
| 99 | return(1); |
||
| 100 | } |
||
| 101 | |||
| 102 | |||
| 103 | void PRINT(const char * ptr, unsigned int len) { |
||
| 104 | for(;len;len--) |
||
| 105 | Putchar(*ptr++); |
||
| 106 | } |
||
| 107 | |||
| 108 | void PRINTP(const char * ptr, unsigned int len) { |
||
| 109 | for(;len;len--) |
||
| 110 | Putchar(*ptr++); |
||
| 111 | } |
||
| 112 | |||
| 113 | void PAD_SP(signed char howmany) { |
||
| 114 | for(;howmany>0;howmany--) |
||
| 115 | Putchar(' '); |
||
| 116 | } |
||
| 117 | |||
| 118 | void PAD_0(signed char howmany) { |
||
| 119 | for(;howmany>0;howmany--) |
||
| 120 | Putchar('0'); |
||
| 121 | } |
||
| 122 | |||
| 123 | #define BUF 40 |
||
| 124 | |||
| 125 | /* |
||
| 126 | * Macros for converting digits to letters and vice versa |
||
| 127 | */ |
||
| 128 | #define to_digit(c) ((c) - '0') |
||
| 129 | #define is_digit(c) ((c)<='9' && (c)>='0') |
||
| 130 | #define to_char(n) ((n) + '0') |
||
| 131 | |||
| 132 | /* |
||
| 133 | * Flags used during conversion. |
||
| 134 | */ |
||
| 135 | #define LONGINT 0x01 /* long integer */ |
||
| 136 | #define LONGDBL 0x02 /* long double; unimplemented */ |
||
| 137 | #define SHORTINT 0x04 /* short integer */ |
||
| 138 | #define ALT 0x08 /* alternate form */ |
||
| 139 | #define LADJUST 0x10 /* left adjustment */ |
||
| 140 | #define ZEROPAD 0x20 /* zero (as opposed to blank) pad */ |
||
| 141 | #define HEXPREFIX 0x40 /* add 0x or 0X prefix */ |
||
| 142 | |||
| 143 | void _printf_P (char const *fmt0, ...) /* Works with string from FLASH */ |
||
| 144 | { |
||
| 145 | va_list ap; |
||
| 146 | register const char *fmt; /* format string */ |
||
| 147 | register char ch; /* character from fmt */ |
||
| 148 | register int n; /* handy integer (short term usage) */ |
||
| 149 | register char *cp; /* handy char pointer (short term usage) */ |
||
| 150 | const char *fmark; /* for remembering a place in fmt */ |
||
| 151 | register unsigned char flags; /* flags as above */ |
||
| 152 | signed char width; /* width from format (%8d), or 0 */ |
||
| 153 | signed char prec; /* precision from format (%.3d), or -1 */ |
||
| 154 | char sign; /* sign prefix (' ', '+', '-', or \0) */ |
||
| 155 | unsigned long _ulong=0; /* integer arguments %[diouxX] */ |
||
| 156 | #define OCT 8 |
||
| 157 | #define DEC 10 |
||
| 158 | #define HEX 16 |
||
| 159 | unsigned char base; /* base for [diouxX] conversion */ |
||
| 160 | signed char dprec; /* a copy of prec if [diouxX], 0 otherwise */ |
||
| 161 | signed char dpad; /* extra 0 padding needed for integers */ |
||
| 162 | signed char fieldsz; /* field size expanded by sign, dpad etc */ |
||
| 163 | /* The initialization of 'size' is to suppress a warning that |
||
| 164 | 'size' might be used unitialized. It seems gcc can't |
||
| 165 | quite grok this spaghetti code ... */ |
||
| 166 | signed char size = 0; /* size of converted field or string */ |
||
| 167 | char buf[BUF]; /* space for %c, %[diouxX], %[eEfgG] */ |
||
| 168 | char ox[2]; /* space for 0x hex-prefix */ |
||
| 169 | |||
| 170 | va_start(ap, fmt0); |
||
| 171 | |||
| 172 | fmt = fmt0; |
||
| 173 | |||
| 174 | /* |
||
| 175 | * Scan the format for conversions (`%' character). |
||
| 176 | */ |
||
| 177 | for (;;) { |
||
| 178 | for (fmark = fmt; (ch = (*fmt)) != '\0' && ch != '%'; fmt++) |
||
| 179 | /* void */; |
||
| 180 | if ((n = fmt - fmark) != 0) { |
||
| 181 | PRINTP(fmark, n); |
||
| 182 | } |
||
| 183 | if (ch == '\0') |
||
| 184 | goto done; |
||
| 185 | fmt++; /* skip over '%' */ |
||
| 186 | |||
| 187 | flags = 0; |
||
| 188 | dprec = 0; |
||
| 189 | width = 0; |
||
| 190 | prec = -1; |
||
| 191 | sign = '\0'; |
||
| 192 | |||
| 193 | rflag: ch = (*fmt++); |
||
| 194 | reswitch: |
||
| 195 | #ifdef LIGHTPRINTF |
||
| 196 | if (ch=='o' || ch=='u' || (ch|0x20)=='x') { |
||
| 197 | #else |
||
| 198 | if (ch=='u' || (ch|0x20)=='x') { |
||
| 199 | #endif |
||
| 200 | if (flags&LONGINT) { |
||
| 201 | _ulong=va_arg(ap, unsigned long); |
||
| 202 | } else { |
||
| 203 | register unsigned int _d; |
||
| 204 | _d=va_arg(ap, unsigned int); |
||
| 205 | _ulong = flags&SHORTINT ? (unsigned long)(unsigned short)_d : (unsigned long)_d; |
||
| 206 | } |
||
| 207 | } |
||
| 208 | |||
| 209 | #ifndef LIGHTPRINTF |
||
| 210 | if(ch==' ') { |
||
| 211 | /* |
||
| 212 | * ``If the space and + flags both appear, the space |
||
| 213 | * flag will be ignored.'' |
||
| 214 | * -- ANSI X3J11 |
||
| 215 | */ |
||
| 216 | if (!sign) |
||
| 217 | sign = ' '; |
||
| 218 | goto rflag; |
||
| 219 | } else if (ch=='#') { |
||
| 220 | flags |= ALT; |
||
| 221 | goto rflag; |
||
| 222 | } else if (ch=='*'||ch=='-') { |
||
| 223 | if (ch=='*') { |
||
| 224 | /* |
||
| 225 | * ``A negative field width argument is taken as a |
||
| 226 | * - flag followed by a positive field width.'' |
||
| 227 | * -- ANSI X3J11 |
||
| 228 | * They don't exclude field widths read from args. |
||
| 229 | */ |
||
| 230 | if ((width = va_arg(ap, int)) >= 0) |
||
| 231 | goto rflag; |
||
| 232 | width = -width; |
||
| 233 | } |
||
| 234 | flags |= LADJUST; |
||
| 235 | flags &= ~ZEROPAD; /* '-' disables '0' */ |
||
| 236 | goto rflag; |
||
| 237 | } else if (ch=='+') { |
||
| 238 | sign = '+'; |
||
| 239 | goto rflag; |
||
| 240 | } else if (ch=='.') { |
||
| 241 | if ((ch = (*fmt++)) == '*') { |
||
| 242 | n = va_arg(ap, int); |
||
| 243 | prec = n < 0 ? -1 : n; |
||
| 244 | goto rflag; |
||
| 245 | } |
||
| 246 | n = 0; |
||
| 247 | while (is_digit(ch)) { |
||
| 248 | n = n*10 + to_digit(ch); |
||
| 249 | ch = (*fmt++); |
||
| 250 | } |
||
| 251 | prec = n < 0 ? -1 : n; |
||
| 252 | goto reswitch; |
||
| 253 | } else |
||
| 254 | #endif /* LIGHTPRINTF */ |
||
| 255 | if (ch=='0') { |
||
| 256 | /* |
||
| 257 | * ``Note that 0 is taken as a flag, not as the |
||
| 258 | * beginning of a field width.'' |
||
| 259 | * -- ANSI X3J11 |
||
| 260 | */ |
||
| 261 | if (!(flags & LADJUST)) |
||
| 262 | flags |= ZEROPAD; /* '-' disables '0' */ |
||
| 263 | goto rflag; |
||
| 264 | } else if (ch>='1' && ch<='9') { |
||
| 265 | n = 0; |
||
| 266 | do { |
||
| 267 | n = 10 * n + to_digit(ch); |
||
| 268 | ch = *fmt++; |
||
| 269 | } while (is_digit(ch)); |
||
| 270 | width = n; |
||
| 271 | goto reswitch; |
||
| 272 | } else if (ch=='h') { |
||
| 273 | flags |= SHORTINT; |
||
| 274 | goto rflag; |
||
| 275 | } else if (ch=='l') { |
||
| 276 | flags |= LONGINT; |
||
| 277 | goto rflag; |
||
| 278 | } else if (ch=='c') { |
||
| 279 | *(cp = buf) = va_arg(ap, int); |
||
| 280 | size = 1; |
||
| 281 | sign = '\0'; |
||
| 282 | } else if (ch=='D'||ch=='d'||ch=='i') { |
||
| 283 | if(ch=='D') |
||
| 284 | flags |= LONGINT; |
||
| 285 | if (flags&LONGINT) { |
||
| 286 | _ulong=va_arg(ap, long); |
||
| 287 | } else { |
||
| 288 | register int _d; |
||
| 289 | _d=va_arg(ap, int); |
||
| 290 | _ulong = flags&SHORTINT ? (long)(short)_d : (long)_d; |
||
| 291 | } |
||
| 292 | |||
| 293 | if ((long)_ulong < 0) { |
||
| 294 | _ulong = -_ulong; |
||
| 295 | sign = '-'; |
||
| 296 | } |
||
| 297 | base = DEC; |
||
| 298 | goto number; |
||
| 299 | } else |
||
| 300 | /* |
||
| 301 | if (ch=='n') { |
||
| 302 | if (flags & LONGINT) |
||
| 303 | *va_arg(ap, long *) = ret; |
||
| 304 | else if (flags & SHORTINT) |
||
| 305 | *va_arg(ap, short *) = ret; |
||
| 306 | else |
||
| 307 | *va_arg(ap, int *) = ret; |
||
| 308 | continue; // no output |
||
| 309 | } else |
||
| 310 | */ |
||
| 311 | #ifndef LIGHTPRINTF |
||
| 312 | if (ch=='O'||ch=='o') { |
||
| 313 | if (ch=='O') |
||
| 314 | flags |= LONGINT; |
||
| 315 | base = OCT; |
||
| 316 | goto nosign; |
||
| 317 | } else if (ch=='p') { |
||
| 318 | /* |
||
| 319 | * ``The argument shall be a pointer to void. The |
||
| 320 | * value of the pointer is converted to a sequence |
||
| 321 | * of printable characters, in an implementation- |
||
| 322 | * defined manner.'' |
||
| 323 | * -- ANSI X3J11 |
||
| 324 | */ |
||
| 325 | /* NOSTRICT */ |
||
| 326 | _ulong = (unsigned int)va_arg(ap, void *); |
||
| 327 | base = HEX; |
||
| 328 | flags |= HEXPREFIX; |
||
| 329 | ch = 'x'; |
||
| 330 | goto nosign; |
||
| 331 | } else if (ch=='s') { // print a string from RAM |
||
| 332 | if ((cp = va_arg(ap, char *)) == NULL) { |
||
| 333 | cp=buf; |
||
| 334 | cp[0] = '('; |
||
| 335 | cp[1] = 'n'; |
||
| 336 | cp[2] = 'u'; |
||
| 337 | cp[4] = cp[3] = 'l'; |
||
| 338 | cp[5] = ')'; |
||
| 339 | cp[6] = '\0'; |
||
| 340 | } |
||
| 341 | if (prec >= 0) { |
||
| 342 | /* |
||
| 343 | * can't use strlen; can only look for the |
||
| 344 | * NUL in the first `prec' characters, and |
||
| 345 | * strlen() will go further. |
||
| 346 | */ |
||
| 347 | char *p = (char*)memchr(cp, 0, prec); |
||
| 348 | |||
| 349 | if (p != NULL) { |
||
| 350 | size = p - cp; |
||
| 351 | if (size > prec) |
||
| 352 | size = prec; |
||
| 353 | } else |
||
| 354 | size = prec; |
||
| 355 | } else |
||
| 356 | size = strlen(cp); |
||
| 357 | sign = '\0'; |
||
| 358 | } else |
||
| 359 | #endif /* LIGHTPRINTF */ |
||
| 360 | if(ch=='U'||ch=='u') { |
||
| 361 | if (ch=='U') |
||
| 362 | flags |= LONGINT; |
||
| 363 | base = DEC; |
||
| 364 | goto nosign; |
||
| 365 | } else if (ch=='X'||ch=='x') { |
||
| 366 | base = HEX; |
||
| 367 | /* leading 0x/X only if non-zero */ |
||
| 368 | if (flags & ALT && _ulong != 0) |
||
| 369 | flags |= HEXPREFIX; |
||
| 370 | |||
| 371 | /* unsigned conversions */ |
||
| 372 | nosign: sign = '\0'; |
||
| 373 | /* |
||
| 374 | * ``... diouXx conversions ... if a precision is |
||
| 375 | * specified, the 0 flag will be ignored.'' |
||
| 376 | * -- ANSI X3J11 |
||
| 377 | */ |
||
| 378 | number: if ((dprec = prec) >= 0) |
||
| 379 | flags &= ~ZEROPAD; |
||
| 380 | |||
| 381 | /* |
||
| 382 | * ``The result of converting a zero value with an |
||
| 383 | * explicit precision of zero is no characters.'' |
||
| 384 | * -- ANSI X3J11 |
||
| 385 | */ |
||
| 386 | cp = buf + BUF; |
||
| 387 | if (_ulong != 0 || prec != 0) { |
||
| 388 | register unsigned char _d,notlastdigit; |
||
| 389 | do { |
||
| 390 | notlastdigit=(_ulong>=base); |
||
| 391 | _d = _ulong % base; |
||
| 392 | |||
| 393 | if (_d<10) { |
||
| 394 | _d+='0'; |
||
| 395 | } else { |
||
| 396 | _d+='a'-10; |
||
| 397 | if (ch=='X') _d&=~0x20; |
||
| 398 | } |
||
| 399 | *--cp=_d; |
||
| 400 | _ulong /= base; |
||
| 401 | } while (notlastdigit); |
||
| 402 | #ifndef LIGHTPRINTF |
||
| 403 | // handle octal leading 0 |
||
| 404 | if (base==OCT && flags & ALT && *cp != '0') |
||
| 405 | *--cp = '0'; |
||
| 406 | #endif |
||
| 407 | } |
||
| 408 | |||
| 409 | size = buf + BUF - cp; |
||
| 410 | } else { //default |
||
| 411 | /* "%?" prints ?, unless ? is NUL */ |
||
| 412 | if (ch == '\0') |
||
| 413 | goto done; |
||
| 414 | /* pretend it was %c with argument ch */ |
||
| 415 | cp = buf; |
||
| 416 | *cp = ch; |
||
| 417 | size = 1; |
||
| 418 | sign = '\0'; |
||
| 419 | } |
||
| 420 | |||
| 421 | /* |
||
| 422 | * All reasonable formats wind up here. At this point, |
||
| 423 | * `cp' points to a string which (if not flags&LADJUST) |
||
| 424 | * should be padded out to `width' places. If |
||
| 425 | * flags&ZEROPAD, it should first be prefixed by any |
||
| 426 | * sign or other prefix; otherwise, it should be blank |
||
| 427 | * padded before the prefix is emitted. After any |
||
| 428 | * left-hand padding and prefixing, emit zeroes |
||
| 429 | * required by a decimal [diouxX] precision, then print |
||
| 430 | * the string proper, then emit zeroes required by any |
||
| 431 | * leftover floating precision; finally, if LADJUST, |
||
| 432 | * pad with blanks. |
||
| 433 | */ |
||
| 434 | |||
| 435 | /* |
||
| 436 | * compute actual size, so we know how much to pad. |
||
| 437 | */ |
||
| 438 | fieldsz = size; |
||
| 439 | |||
| 440 | dpad = dprec - size; |
||
| 441 | if (dpad < 0) |
||
| 442 | dpad = 0; |
||
| 443 | |||
| 444 | if (sign) |
||
| 445 | fieldsz++; |
||
| 446 | else if (flags & HEXPREFIX) |
||
| 447 | fieldsz += 2; |
||
| 448 | fieldsz += dpad; |
||
| 449 | |||
| 450 | /* right-adjusting blank padding */ |
||
| 451 | if ((flags & (LADJUST|ZEROPAD)) == 0) |
||
| 452 | PAD_SP(width - fieldsz); |
||
| 453 | |||
| 454 | /* prefix */ |
||
| 455 | if (sign) { |
||
| 456 | PRINT(&sign, 1); |
||
| 457 | } else if (flags & HEXPREFIX) { |
||
| 458 | ox[0] = '0'; |
||
| 459 | ox[1] = ch; |
||
| 460 | PRINT(ox, 2); |
||
| 461 | } |
||
| 462 | |||
| 463 | /* right-adjusting zero padding */ |
||
| 464 | if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD) |
||
| 465 | PAD_0(width - fieldsz); |
||
| 466 | |||
| 467 | /* leading zeroes from decimal precision */ |
||
| 468 | PAD_0(dpad); |
||
| 469 | |||
| 470 | /* the string or number proper */ |
||
| 471 | PRINT(cp, size); |
||
| 472 | |||
| 473 | /* left-adjusting padding (always blank) */ |
||
| 474 | if (flags & LADJUST) |
||
| 475 | PAD_SP(width - fieldsz); |
||
| 476 | } |
||
| 477 | done: |
||
| 478 | va_end(ap); |
||
| 479 | } |