testdcf.c revision 1.1.1.2.4.2
1 /* $NetBSD: testdcf.c,v 1.1.1.2.4.2 2015/04/23 18:53:03 snj Exp $ */ 2 3 /* 4 * /src/NTP/ntp4-dev/parseutil/testdcf.c,v 4.10 2005/08/06 14:18:43 kardel RELEASE_20050806_A 5 * 6 * testdcf.c,v 4.10 2005/08/06 14:18:43 kardel RELEASE_20050806_A 7 * 8 * simple DCF77 100/200ms pulse test program (via 50Baud serial line) 9 * 10 * Copyright (c) 1995-2005 by Frank Kardel <kardel <AT> ntp.org> 11 * Copyright (c) 1989-1994 by Frank Kardel, Friedrich-Alexander Universitaet Erlangen-Nuernberg, Germany 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. Neither the name of the author nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 */ 38 39 #include <config.h> 40 #include "ntp_stdlib.h" 41 42 #include <sys/ioctl.h> 43 #include <unistd.h> 44 #include <stdio.h> 45 #include <fcntl.h> 46 #include <termios.h> 47 48 /* 49 * state flags 50 */ 51 #define DCFB_ANNOUNCE 0x0001 /* switch time zone warning (DST switch) */ 52 #define DCFB_DST 0x0002 /* DST in effect */ 53 #define DCFB_LEAP 0x0004 /* LEAP warning (1 hour prior to occurrence) */ 54 #define DCFB_CALLBIT 0x0008 /* "call bit" used to signalize irregularities in the control facilities */ 55 56 struct clocktime /* clock time broken up from time code */ 57 { 58 long wday; 59 long day; 60 long month; 61 long year; 62 long hour; 63 long minute; 64 long second; 65 long usecond; 66 long utcoffset; /* in minutes */ 67 long flags; /* current clock status */ 68 }; 69 70 typedef struct clocktime clocktime_t; 71 72 static char type(unsigned int); 73 74 #define TIMES10(_X_) (((_X_) << 3) + ((_X_) << 1)) 75 76 /* 77 * parser related return/error codes 78 */ 79 #define CVT_MASK 0x0000000F /* conversion exit code */ 80 #define CVT_NONE 0x00000001 /* format not applicable */ 81 #define CVT_FAIL 0x00000002 /* conversion failed - error code returned */ 82 #define CVT_OK 0x00000004 /* conversion succeeded */ 83 #define CVT_BADFMT 0x00000010 /* general format error - (unparsable) */ 84 85 /* 86 * DCF77 raw time code 87 * 88 * From "Zur Zeit", Physikalisch-Technische Bundesanstalt (PTB), Braunschweig 89 * und Berlin, Maerz 1989 90 * 91 * Timecode transmission: 92 * AM: 93 * time marks are send every second except for the second before the 94 * next minute mark 95 * time marks consist of a reduction of transmitter power to 25% 96 * of the nominal level 97 * the falling edge is the time indication (on time) 98 * time marks of a 100ms duration constitute a logical 0 99 * time marks of a 200ms duration constitute a logical 1 100 * FM: 101 * see the spec. (basically a (non-)inverted psuedo random phase shift) 102 * 103 * Encoding: 104 * Second Contents 105 * 0 - 10 AM: free, FM: 0 106 * 11 - 14 free 107 * 15 R - "call bit" used to signalize irregularities in the control facilities 108 * (until 2003 indicated transmission via alternate antenna) 109 * 16 A1 - expect zone change (1 hour before) 110 * 17 - 18 Z1,Z2 - time zone 111 * 0 0 illegal 112 * 0 1 MEZ (MET) 113 * 1 0 MESZ (MED, MET DST) 114 * 1 1 illegal 115 * 19 A2 - expect leap insertion/deletion (1 hour before) 116 * 20 S - start of time code (1) 117 * 21 - 24 M1 - BCD (lsb first) Minutes 118 * 25 - 27 M10 - BCD (lsb first) 10 Minutes 119 * 28 P1 - Minute Parity (even) 120 * 29 - 32 H1 - BCD (lsb first) Hours 121 * 33 - 34 H10 - BCD (lsb first) 10 Hours 122 * 35 P2 - Hour Parity (even) 123 * 36 - 39 D1 - BCD (lsb first) Days 124 * 40 - 41 D10 - BCD (lsb first) 10 Days 125 * 42 - 44 DW - BCD (lsb first) day of week (1: Monday -> 7: Sunday) 126 * 45 - 49 MO - BCD (lsb first) Month 127 * 50 MO0 - 10 Months 128 * 51 - 53 Y1 - BCD (lsb first) Years 129 * 54 - 57 Y10 - BCD (lsb first) 10 Years 130 * 58 P3 - Date Parity (even) 131 * 59 - usually missing (minute indication), except for leap insertion 132 */ 133 134 static char revision[] = "4.10"; 135 136 static struct rawdcfcode 137 { 138 char offset; /* start bit */ 139 } rawdcfcode[] = 140 { 141 { 0 }, { 15 }, { 16 }, { 17 }, { 19 }, { 20 }, { 21 }, { 25 }, { 28 }, { 29 }, 142 { 33 }, { 35 }, { 36 }, { 40 }, { 42 }, { 45 }, { 49 }, { 50 }, { 54 }, { 58 }, { 59 } 143 }; 144 145 #define DCF_M 0 146 #define DCF_R 1 147 #define DCF_A1 2 148 #define DCF_Z 3 149 #define DCF_A2 4 150 #define DCF_S 5 151 #define DCF_M1 6 152 #define DCF_M10 7 153 #define DCF_P1 8 154 #define DCF_H1 9 155 #define DCF_H10 10 156 #define DCF_P2 11 157 #define DCF_D1 12 158 #define DCF_D10 13 159 #define DCF_DW 14 160 #define DCF_MO 15 161 #define DCF_MO0 16 162 #define DCF_Y1 17 163 #define DCF_Y10 18 164 #define DCF_P3 19 165 166 static struct partab 167 { 168 char offset; /* start bit of parity field */ 169 } partab[] = 170 { 171 { 21 }, { 29 }, { 36 }, { 59 } 172 }; 173 174 #define DCF_P_P1 0 175 #define DCF_P_P2 1 176 #define DCF_P_P3 2 177 178 #define DCF_Z_MET 0x2 179 #define DCF_Z_MED 0x1 180 181 static unsigned long 182 ext_bf( 183 register unsigned char *buf, 184 register int idx 185 ) 186 { 187 register unsigned long sum = 0; 188 register int i, first; 189 190 first = rawdcfcode[idx].offset; 191 192 for (i = rawdcfcode[idx+1].offset - 1; i >= first; i--) 193 { 194 sum <<= 1; 195 sum |= (buf[i] != '-'); 196 } 197 return sum; 198 } 199 200 static unsigned 201 pcheck( 202 register unsigned char *buf, 203 register int idx 204 ) 205 { 206 register int i,last; 207 register unsigned psum = 1; 208 209 last = partab[idx+1].offset; 210 211 for (i = partab[idx].offset; i < last; i++) 212 psum ^= (buf[i] != '-'); 213 214 return psum; 215 } 216 217 static unsigned long 218 convert_rawdcf( 219 register unsigned char *buffer, 220 register int size, 221 register clocktime_t *clock_time 222 ) 223 { 224 if (size < 57) 225 { 226 printf("%-30s", "*** INCOMPLETE"); 227 return CVT_NONE; 228 } 229 230 /* 231 * check Start and Parity bits 232 */ 233 if ((ext_bf(buffer, DCF_S) == 1) && 234 pcheck(buffer, DCF_P_P1) && 235 pcheck(buffer, DCF_P_P2) && 236 pcheck(buffer, DCF_P_P3)) 237 { 238 /* 239 * buffer OK 240 */ 241 242 clock_time->flags = 0; 243 clock_time->usecond= 0; 244 clock_time->second = 0; 245 clock_time->minute = ext_bf(buffer, DCF_M10); 246 clock_time->minute = TIMES10(clock_time->minute) + ext_bf(buffer, DCF_M1); 247 clock_time->hour = ext_bf(buffer, DCF_H10); 248 clock_time->hour = TIMES10(clock_time->hour) + ext_bf(buffer, DCF_H1); 249 clock_time->day = ext_bf(buffer, DCF_D10); 250 clock_time->day = TIMES10(clock_time->day) + ext_bf(buffer, DCF_D1); 251 clock_time->month = ext_bf(buffer, DCF_MO0); 252 clock_time->month = TIMES10(clock_time->month) + ext_bf(buffer, DCF_MO); 253 clock_time->year = ext_bf(buffer, DCF_Y10); 254 clock_time->year = TIMES10(clock_time->year) + ext_bf(buffer, DCF_Y1); 255 clock_time->wday = ext_bf(buffer, DCF_DW); 256 257 switch (ext_bf(buffer, DCF_Z)) 258 { 259 case DCF_Z_MET: 260 clock_time->utcoffset = -60; 261 break; 262 263 case DCF_Z_MED: 264 clock_time->flags |= DCFB_DST; 265 clock_time->utcoffset = -120; 266 break; 267 268 default: 269 printf("%-30s", "*** BAD TIME ZONE"); 270 return CVT_FAIL|CVT_BADFMT; 271 } 272 273 if (ext_bf(buffer, DCF_A1)) 274 clock_time->flags |= DCFB_ANNOUNCE; 275 276 if (ext_bf(buffer, DCF_A2)) 277 clock_time->flags |= DCFB_LEAP; 278 279 if (ext_bf(buffer, DCF_R)) 280 clock_time->flags |= DCFB_CALLBIT; 281 282 return CVT_OK; 283 } 284 else 285 { 286 /* 287 * bad format - not for us 288 */ 289 printf("%-30s", "*** BAD FORMAT (invalid/parity)"); 290 return CVT_FAIL|CVT_BADFMT; 291 } 292 } 293 294 static char 295 type( 296 unsigned int c 297 ) 298 { 299 c ^= 0xFF; 300 return (c >= 0xF); 301 } 302 303 static const char *wday[8] = 304 { 305 "??", 306 "Mo", 307 "Tu", 308 "We", 309 "Th", 310 "Fr", 311 "Sa", 312 "Su" 313 }; 314 315 static char pat[] = "-\\|/"; 316 317 #define LINES (24-2) /* error lines after which the two headlines are repeated */ 318 319 int 320 main( 321 int argc, 322 char *argv[] 323 ) 324 { 325 if ((argc != 2) && (argc != 3)) 326 { 327 fprintf(stderr, "usage: %s [-f|-t|-ft|-tf] <device>\n", argv[0]); 328 exit(1); 329 } 330 else 331 { 332 unsigned char c; 333 char *file; 334 int fd; 335 int offset = 15; 336 int trace = 0; 337 int errs = LINES+1; 338 339 /* 340 * SIMPLE(!) argument "parser" 341 */ 342 if (argc == 3) 343 { 344 if (strcmp(argv[1], "-f") == 0) 345 offset = 0; 346 if (strcmp(argv[1], "-t") == 0) 347 trace = 1; 348 if ((strcmp(argv[1], "-ft") == 0) || 349 (strcmp(argv[1], "-tf") == 0)) 350 { 351 offset = 0; 352 trace = 1; 353 } 354 file = argv[2]; 355 } 356 else 357 { 358 file = argv[1]; 359 } 360 361 fd = open(file, O_RDONLY); 362 if (fd == -1) 363 { 364 perror(file); 365 exit(1); 366 } 367 else 368 { 369 int i; 370 #ifdef TIOCM_RTS 371 int on = TIOCM_RTS; 372 #endif 373 struct timeval t, tt, tlast; 374 char buf[61]; 375 clocktime_t clock_time; 376 struct termios term; 377 int rtc = CVT_NONE; 378 379 if (tcgetattr(fd, &term) == -1) 380 { 381 perror("tcgetattr"); 382 exit(1); 383 } 384 385 memset(term.c_cc, 0, sizeof(term.c_cc)); 386 term.c_cc[VMIN] = 1; 387 #ifdef NO_PARENB_IGNPAR /* Was: defined(SYS_IRIX4) || defined (SYS_IRIX5) */ 388 /* somehow doesn't grok PARENB & IGNPAR (mj) */ 389 term.c_cflag = CS8|CREAD|CLOCAL; 390 #else 391 term.c_cflag = CS8|CREAD|CLOCAL|PARENB; 392 #endif 393 term.c_iflag = IGNPAR; 394 term.c_oflag = 0; 395 term.c_lflag = 0; 396 397 cfsetispeed(&term, B50); 398 cfsetospeed(&term, B50); 399 400 if (tcsetattr(fd, TCSANOW, &term) == -1) 401 { 402 perror("tcsetattr"); 403 exit(1); 404 } 405 406 #ifdef I_POP 407 while (ioctl(fd, I_POP, 0) == 0) 408 ; 409 #endif 410 #if defined(TIOCMBIC) && defined(TIOCM_RTS) 411 if (ioctl(fd, TIOCMBIC, (caddr_t)&on) == -1) 412 { 413 perror("TIOCM_RTS"); 414 } 415 #endif 416 417 printf(" DCF77 monitor %s - Copyright (C) 1993-2005, Frank Kardel\n\n", revision); 418 419 clock_time.hour = 0; 420 clock_time.minute = 0; 421 clock_time.day = 0; 422 clock_time.wday = 0; 423 clock_time.month = 0; 424 clock_time.year = 0; 425 clock_time.flags = 0; 426 buf[60] = '\0'; 427 for ( i = 0; i < 60; i++) 428 buf[i] = '.'; 429 430 gettimeofday(&tlast, 0L); 431 i = 0; 432 while (read(fd, &c, 1) == 1) 433 { 434 gettimeofday(&t, 0L); 435 tt = t; 436 t.tv_sec -= tlast.tv_sec; 437 t.tv_usec -= tlast.tv_usec; 438 if (t.tv_usec < 0) 439 { 440 t.tv_usec += 1000000; 441 t.tv_sec -= 1; 442 } 443 444 if (errs > LINES) 445 { 446 printf(" %s", &"PTB private....RADMLSMin....PHour..PMDay..DayMonthYear....P\n"[offset]); 447 printf(" %s", &"---------------RADMLS1248124P124812P1248121241248112481248P\n"[offset]); 448 errs = 0; 449 } 450 451 if (t.tv_sec > 1 || 452 (t.tv_sec == 1 && 453 t.tv_usec > 500000)) 454 { 455 printf("%c %.*s ", pat[i % (sizeof(pat)-1)], 59 - offset, &buf[offset]); 456 457 if ((rtc = convert_rawdcf((unsigned char *)buf, i, &clock_time)) != CVT_OK) 458 { 459 printf("\n"); 460 clock_time.hour = 0; 461 clock_time.minute = 0; 462 clock_time.day = 0; 463 clock_time.wday = 0; 464 clock_time.month = 0; 465 clock_time.year = 0; 466 clock_time.flags = 0; 467 errs++; 468 } 469 470 if (((c^0xFF)+1) & (c^0xFF)) 471 buf[0] = '?'; 472 else 473 buf[0] = type(c) ? '#' : '-'; 474 475 for ( i = 1; i < 60; i++) 476 buf[i] = '.'; 477 478 i = 0; 479 } 480 else 481 { 482 if (((c^0xFF)+1) & (c^0xFF)) 483 buf[i] = '?'; 484 else 485 buf[i] = type(c) ? '#' : '-'; 486 487 printf("%c %.*s ", pat[i % (sizeof(pat)-1)], 59 - offset, &buf[offset]); 488 } 489 490 if (rtc == CVT_OK) 491 { 492 printf("%s, %2d:%02d:%02d, %d.%02d.%02d, <%s%s%s%s>", 493 wday[clock_time.wday], 494 (int)clock_time.hour, (int)clock_time.minute, (int)i, (int)clock_time.day, (int)clock_time.month, 495 (int)clock_time.year, 496 (clock_time.flags & DCFB_CALLBIT) ? "R" : "_", 497 (clock_time.flags & DCFB_ANNOUNCE) ? "A" : "_", 498 (clock_time.flags & DCFB_DST) ? "D" : "_", 499 (clock_time.flags & DCFB_LEAP) ? "L" : "_" 500 ); 501 if (trace && (i == 0)) 502 { 503 printf("\n"); 504 errs++; 505 } 506 } 507 508 printf("\r"); 509 510 if (i < 60) 511 { 512 i++; 513 } 514 515 tlast = tt; 516 517 fflush(stdout); 518 } 519 close(fd); 520 } 521 } 522 return 0; 523 } 524 525 /* 526 * History: 527 * 528 * testdcf.c,v 529 * Revision 4.10 2005/08/06 14:18:43 kardel 530 * cleanup warnings 531 * 532 * Revision 4.9 2005/08/06 14:14:38 kardel 533 * document revision on startup 534 * 535 * Revision 4.8 2005/08/06 14:10:08 kardel 536 * fix setting of baud rate 537 * 538 * Revision 4.7 2005/04/16 17:32:10 kardel 539 * update copyright 540 * 541 * Revision 4.6 2004/11/14 15:29:42 kardel 542 * support PPSAPI, upgrade Copyright to Berkeley style 543 * 544 */ 545
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