Details | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
13 | user | 1 | // Die Funktion printf_P() unterliegt ihrer eigenen Lizenz und ist nicht von der Lizenz für den MikroKopter-Teil unterstellt |
2 | |||
3 | /* |
||
4 | Copyright (C) 1993 Free Software Foundation |
||
5 | |||
6 | This file is part of the GNU IO Library. This library is free |
||
7 | software; you can redistribute it and/or modify it under the |
||
8 | terms of the GNU General Public License as published by the |
||
9 | Free Software Foundation; either version 2, or (at your option) |
||
10 | any later version. |
||
11 | |||
12 | This library is distributed in the hope that it will be useful, |
||
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
||
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||
15 | GNU General Public License for more details. |
||
16 | |||
17 | You should have received a copy of the GNU General Public License |
||
18 | along with this library; see the file COPYING. If not, write to the Free |
||
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
||
20 | |||
21 | As a special exception, if you link this library with files |
||
22 | compiled with a GNU compiler to produce an executable, this does not cause |
||
23 | the resulting executable to be covered by the GNU General Public License. |
||
24 | This exception does not however invalidate any other reasons why |
||
25 | the executable file might be covered by the GNU General Public License. */ |
||
26 | |||
27 | /* |
||
28 | * Copyright (c) 1990 Regents of the University of California. |
||
29 | * All rights reserved. |
||
30 | * |
||
31 | * Redistribution and use in source and binary forms, with or without |
||
32 | * modification, are permitted provided that the following conditions |
||
33 | * are met: |
||
34 | * 1. Redistributions of source code must retain the above copyright |
||
35 | * notice, this list of conditions and the following disclaimer. |
||
36 | * 2. Redistributions in binary form must reproduce the above copyright |
||
37 | * notice, this list of conditions and the following disclaimer in the |
||
38 | * documentation and/or other materials provided with the distribution. |
||
39 | * 3. [rescinded 22 July 1999] |
||
40 | * 4. Neither the name of the University nor the names of its contributors |
||
41 | * may be used to endorse or promote products derived from this software |
||
42 | * without specific prior written permission. |
||
43 | * |
||
44 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
||
45 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
||
46 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
||
47 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
||
48 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
||
49 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
||
50 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
||
51 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
||
52 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
||
53 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
||
54 | * SUCH DAMAGE. |
||
55 | */ |
||
56 | |||
57 | /****************************************************************************** |
||
58 | This file is a patched version of printf called _printf_P |
||
59 | It is made to work with avr-gcc for Atmel AVR MCUs. |
||
60 | There are some differences from standard printf: |
||
61 | 1. There is no floating point support (with fp the code is about 8K!) |
||
62 | 2. Return type is void |
||
63 | 3. Format string must be in program memory (by using macro printf this is |
||
64 | done automaticaly) |
||
65 | 4. %n is not implemented (just remove the comment around it if you need it) |
||
66 | 5. If LIGHTPRINTF is defined, the code is about 550 bytes smaller and the |
||
67 | folowing specifiers are disabled : |
||
68 | space # * . - + p s o O |
||
69 | 6. A function void uart_sendchar(char c) is used for output. The UART must |
||
70 | be initialized before using printf. |
||
71 | |||
72 | Alexander Popov |
||
73 | sasho@vip.orbitel.bg |
||
74 | ******************************************************************************/ |
||
75 | |||
76 | /* |
||
77 | * Actual printf innards. |
||
78 | * |
||
79 | * This code is large and complicated... |
||
80 | */ |
||
81 | |||
82 | #include <string.h> |
||
83 | #ifdef __STDC__ |
||
84 | #include <stdarg.h> |
||
85 | #else |
||
86 | #include <varargs.h> |
||
87 | #endif |
||
88 | |||
89 | #include "main.h" |
||
90 | |||
91 | |||
92 | //#define LIGHTPRINTF |
||
93 | char PrintZiel; |
||
94 | |||
95 | |||
96 | char Putchar(char zeichen) |
||
97 | { |
||
98 | if(PrintZiel == OUT_LCD) { DisplayBuff[DispPtr++] = zeichen; return(1);} |
||
99 | else return(uart_putchar(zeichen)); |
||
100 | } |
||
101 | |||
102 | |||
103 | void PRINT(const char * ptr, unsigned int len) |
||
104 | { |
||
105 | for(;len;len--) Putchar(*ptr++); |
||
106 | } |
||
107 | |||
108 | void PRINTP(const char * ptr, unsigned int len) |
||
109 | { |
||
110 | for(;len;len--) Putchar(pgm_read_byte(ptr++)); |
||
111 | } |
||
112 | |||
113 | void PAD_SP(signed char howmany) |
||
114 | { |
||
115 | for(;howmany>0;howmany--) Putchar(' '); |
||
116 | } |
||
117 | |||
118 | void PAD_0(signed char howmany) |
||
119 | { |
||
120 | for(;howmany>0;howmany--) 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 ziel,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 | PrintZiel = ziel; // bestimmt, LCD oder UART |
||
171 | va_start(ap, fmt0); |
||
172 | |||
173 | fmt = fmt0; |
||
174 | |||
175 | /* |
||
176 | * Scan the format for conversions (`%' character). |
||
177 | */ |
||
178 | for (;;) { |
||
179 | for (fmark = fmt; (ch = pgm_read_byte(fmt)) != '\0' && ch != '%'; fmt++) |
||
180 | /* void */; |
||
181 | if ((n = fmt - fmark) != 0) { |
||
182 | PRINTP(fmark, n); |
||
183 | } |
||
184 | if (ch == '\0') |
||
185 | goto done; |
||
186 | fmt++; /* skip over '%' */ |
||
187 | |||
188 | flags = 0; |
||
189 | dprec = 0; |
||
190 | width = 0; |
||
191 | prec = -1; |
||
192 | sign = '\0'; |
||
193 | |||
194 | rflag: ch = PRG_RDB(fmt++); |
||
195 | reswitch: |
||
196 | #ifdef LIGHTPRINTF |
||
197 | if (ch=='o' || ch=='u' || (ch|0x20)=='x') { |
||
198 | #else |
||
199 | if (ch=='u' || (ch|0x20)=='x') { |
||
200 | #endif |
||
201 | if (flags&LONGINT) { |
||
202 | _ulong=va_arg(ap, unsigned long); |
||
203 | } else { |
||
204 | register unsigned int _d; |
||
205 | _d=va_arg(ap, unsigned int); |
||
206 | _ulong = flags&SHORTINT ? (unsigned long)(unsigned short)_d : (unsigned long)_d; |
||
207 | } |
||
208 | } |
||
209 | |||
210 | #ifndef LIGHTPRINTF |
||
211 | if(ch==' ') { |
||
212 | /* |
||
213 | * ``If the space and + flags both appear, the space |
||
214 | * flag will be ignored.'' |
||
215 | * -- ANSI X3J11 |
||
216 | */ |
||
217 | if (!sign) |
||
218 | sign = ' '; |
||
219 | goto rflag; |
||
220 | } else if (ch=='#') { |
||
221 | flags |= ALT; |
||
222 | goto rflag; |
||
223 | } else if (ch=='*'||ch=='-') { |
||
224 | if (ch=='*') { |
||
225 | /* |
||
226 | * ``A negative field width argument is taken as a |
||
227 | * - flag followed by a positive field width.'' |
||
228 | * -- ANSI X3J11 |
||
229 | * They don't exclude field widths read from args. |
||
230 | */ |
||
231 | if ((width = va_arg(ap, int)) >= 0) |
||
232 | goto rflag; |
||
233 | width = -width; |
||
234 | } |
||
235 | flags |= LADJUST; |
||
236 | flags &= ~ZEROPAD; /* '-' disables '0' */ |
||
237 | goto rflag; |
||
238 | } else if (ch=='+') { |
||
239 | sign = '+'; |
||
240 | goto rflag; |
||
241 | } else if (ch=='.') { |
||
242 | if ((ch = PRG_RDB(fmt++)) == '*') { |
||
243 | n = va_arg(ap, int); |
||
244 | prec = n < 0 ? -1 : n; |
||
245 | goto rflag; |
||
246 | } |
||
247 | n = 0; |
||
248 | while (is_digit(ch)) { |
||
249 | n = n*10 + to_digit(ch); |
||
250 | ch = PRG_RDB(fmt++); |
||
251 | } |
||
252 | prec = n < 0 ? -1 : n; |
||
253 | goto reswitch; |
||
254 | } else |
||
255 | #endif /* LIGHTPRINTF */ |
||
256 | if (ch=='0') { |
||
257 | /* |
||
258 | * ``Note that 0 is taken as a flag, not as the |
||
259 | * beginning of a field width.'' |
||
260 | * -- ANSI X3J11 |
||
261 | */ |
||
262 | if (!(flags & LADJUST)) |
||
263 | flags |= ZEROPAD; /* '-' disables '0' */ |
||
264 | goto rflag; |
||
265 | } else if (ch>='1' && ch<='9') { |
||
266 | n = 0; |
||
267 | do { |
||
268 | n = 10 * n + to_digit(ch); |
||
269 | ch = PRG_RDB(fmt++); |
||
270 | } while (is_digit(ch)); |
||
271 | width = n; |
||
272 | goto reswitch; |
||
273 | } else if (ch=='h') { |
||
274 | flags |= SHORTINT; |
||
275 | goto rflag; |
||
276 | } else if (ch=='l') { |
||
277 | flags |= LONGINT; |
||
278 | goto rflag; |
||
279 | } else if (ch=='c') { |
||
280 | *(cp = buf) = va_arg(ap, int); |
||
281 | size = 1; |
||
282 | sign = '\0'; |
||
283 | } else if (ch=='D'||ch=='d'||ch=='i') { |
||
284 | if(ch=='D') |
||
285 | flags |= LONGINT; |
||
286 | if (flags&LONGINT) { |
||
287 | _ulong=va_arg(ap, long); |
||
288 | } else { |
||
289 | register int _d; |
||
290 | _d=va_arg(ap, int); |
||
291 | _ulong = flags&SHORTINT ? (long)(short)_d : (long)_d; |
||
292 | } |
||
293 | |||
294 | if ((long)_ulong < 0) { |
||
295 | _ulong = -_ulong; |
||
296 | sign = '-'; |
||
297 | } |
||
298 | base = DEC; |
||
299 | goto number; |
||
300 | } else |
||
301 | /* |
||
302 | if (ch=='n') { |
||
303 | if (flags & LONGINT) |
||
304 | *va_arg(ap, long *) = ret; |
||
305 | else if (flags & SHORTINT) |
||
306 | *va_arg(ap, short *) = ret; |
||
307 | else |
||
308 | *va_arg(ap, int *) = ret; |
||
309 | continue; // no output |
||
310 | } else |
||
311 | */ |
||
312 | #ifndef LIGHTPRINTF |
||
313 | if (ch=='O'||ch=='o') { |
||
314 | if (ch=='O') |
||
315 | flags |= LONGINT; |
||
316 | base = OCT; |
||
317 | goto nosign; |
||
318 | } else if (ch=='p') { |
||
319 | /* |
||
320 | * ``The argument shall be a pointer to void. The |
||
321 | * value of the pointer is converted to a sequence |
||
322 | * of printable characters, in an implementation- |
||
323 | * defined manner.'' |
||
324 | * -- ANSI X3J11 |
||
325 | */ |
||
326 | /* NOSTRICT */ |
||
327 | _ulong = (unsigned int)va_arg(ap, void *); |
||
328 | base = HEX; |
||
329 | flags |= HEXPREFIX; |
||
330 | ch = 'x'; |
||
331 | goto nosign; |
||
332 | } else if (ch=='s') { // print a string from RAM |
||
333 | if ((cp = va_arg(ap, char *)) == NULL) { |
||
334 | cp=buf; |
||
335 | cp[0] = '('; |
||
336 | cp[1] = 'n'; |
||
337 | cp[2] = 'u'; |
||
338 | cp[4] = cp[3] = 'l'; |
||
339 | cp[5] = ')'; |
||
340 | cp[6] = '\0'; |
||
341 | } |
||
342 | if (prec >= 0) { |
||
343 | /* |
||
344 | * can't use strlen; can only look for the |
||
345 | * NUL in the first `prec' characters, and |
||
346 | * strlen() will go further. |
||
347 | */ |
||
348 | char *p = (char*)memchr(cp, 0, prec); |
||
349 | |||
350 | if (p != NULL) { |
||
351 | size = p - cp; |
||
352 | if (size > prec) |
||
353 | size = prec; |
||
354 | } else |
||
355 | size = prec; |
||
356 | } else |
||
357 | size = strlen(cp); |
||
358 | sign = '\0'; |
||
359 | } else |
||
360 | #endif /* LIGHTPRINTF */ |
||
361 | if(ch=='U'||ch=='u') { |
||
362 | if (ch=='U') |
||
363 | flags |= LONGINT; |
||
364 | base = DEC; |
||
365 | goto nosign; |
||
366 | } else if (ch=='X'||ch=='x') { |
||
367 | base = HEX; |
||
368 | /* leading 0x/X only if non-zero */ |
||
369 | if (flags & ALT && _ulong != 0) |
||
370 | flags |= HEXPREFIX; |
||
371 | |||
372 | /* unsigned conversions */ |
||
373 | nosign: sign = '\0'; |
||
374 | /* |
||
375 | * ``... diouXx conversions ... if a precision is |
||
376 | * specified, the 0 flag will be ignored.'' |
||
377 | * -- ANSI X3J11 |
||
378 | */ |
||
379 | number: if ((dprec = prec) >= 0) |
||
380 | flags &= ~ZEROPAD; |
||
381 | |||
382 | /* |
||
383 | * ``The result of converting a zero value with an |
||
384 | * explicit precision of zero is no characters.'' |
||
385 | * -- ANSI X3J11 |
||
386 | */ |
||
387 | cp = buf + BUF; |
||
388 | if (_ulong != 0 || prec != 0) { |
||
389 | register unsigned char _d,notlastdigit; |
||
390 | do { |
||
391 | notlastdigit=(_ulong>=base); |
||
392 | _d = _ulong % base; |
||
393 | |||
394 | if (_d<10) { |
||
395 | _d+='0'; |
||
396 | } else { |
||
397 | _d+='a'-10; |
||
398 | if (ch=='X') _d&=~0x20; |
||
399 | } |
||
400 | *--cp=_d; |
||
401 | _ulong /= base; |
||
402 | } while (notlastdigit); |
||
403 | #ifndef LIGHTPRINTF |
||
404 | // handle octal leading 0 |
||
405 | if (base==OCT && flags & ALT && *cp != '0') |
||
406 | *--cp = '0'; |
||
407 | #endif |
||
408 | } |
||
409 | |||
410 | size = buf + BUF - cp; |
||
411 | } else { //default |
||
412 | /* "%?" prints ?, unless ? is NUL */ |
||
413 | if (ch == '\0') |
||
414 | goto done; |
||
415 | /* pretend it was %c with argument ch */ |
||
416 | cp = buf; |
||
417 | *cp = ch; |
||
418 | size = 1; |
||
419 | sign = '\0'; |
||
420 | } |
||
421 | |||
422 | /* |
||
423 | * All reasonable formats wind up here. At this point, |
||
424 | * `cp' points to a string which (if not flags&LADJUST) |
||
425 | * should be padded out to `width' places. If |
||
426 | * flags&ZEROPAD, it should first be prefixed by any |
||
427 | * sign or other prefix; otherwise, it should be blank |
||
428 | * padded before the prefix is emitted. After any |
||
429 | * left-hand padding and prefixing, emit zeroes |
||
430 | * required by a decimal [diouxX] precision, then print |
||
431 | * the string proper, then emit zeroes required by any |
||
432 | * leftover floating precision; finally, if LADJUST, |
||
433 | * pad with blanks. |
||
434 | */ |
||
435 | |||
436 | /* |
||
437 | * compute actual size, so we know how much to pad. |
||
438 | */ |
||
439 | fieldsz = size; |
||
440 | |||
441 | dpad = dprec - size; |
||
442 | if (dpad < 0) |
||
443 | dpad = 0; |
||
444 | |||
445 | if (sign) |
||
446 | fieldsz++; |
||
447 | else if (flags & HEXPREFIX) |
||
448 | fieldsz += 2; |
||
449 | fieldsz += dpad; |
||
450 | |||
451 | /* right-adjusting blank padding */ |
||
452 | if ((flags & (LADJUST|ZEROPAD)) == 0) |
||
453 | PAD_SP(width - fieldsz); |
||
454 | |||
455 | /* prefix */ |
||
456 | if (sign) { |
||
457 | PRINT(&sign, 1); |
||
458 | } else if (flags & HEXPREFIX) { |
||
459 | ox[0] = '0'; |
||
460 | ox[1] = ch; |
||
461 | PRINT(ox, 2); |
||
462 | } |
||
463 | |||
464 | /* right-adjusting zero padding */ |
||
465 | if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD) |
||
466 | PAD_0(width - fieldsz); |
||
467 | |||
468 | /* leading zeroes from decimal precision */ |
||
469 | PAD_0(dpad); |
||
470 | |||
471 | /* the string or number proper */ |
||
472 | PRINT(cp, size); |
||
473 | |||
474 | /* left-adjusting padding (always blank) */ |
||
475 | if (flags & LADJUST) |
||
476 | PAD_SP(width - fieldsz); |
||
477 | } |
||
478 | done: |
||
479 | va_end(ap); |
||
480 | } |