1 /* 2 * ---------------------------------------------------------------------------- 3 * "THE BEER-WARE LICENSE" (Revision 42): 4 * <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you 5 * can do whatever you want with this stuff. If we meet some day, and you think 6 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp 7 * ---------------------------------------------------------------------------- 8 * 9 * refclock_oncore.c 10 * 11 * Driver for some of the various the Motorola Oncore GPS receivers. 12 * should work with Basic, PVT6, VP, UT, UT+, GT, GT+, SL, M12, M12+T 13 * The receivers with TRAIM (VP, UT, UT+, M12+T), will be more accurate 14 * than the others. 15 * The receivers without position hold (GT, GT+) will be less accurate. 16 * 17 * Tested with: 18 * 19 * (UT) (VP) 20 * COPYRIGHT 1991-1997 MOTOROLA INC. COPYRIGHT 1991-1996 MOTOROLA INC. 21 * SFTW P/N # 98-P36848P SFTW P/N # 98-P36830P 22 * SOFTWARE VER # 2 SOFTWARE VER # 8 23 * SOFTWARE REV # 2 SOFTWARE REV # 8 24 * SOFTWARE DATE APR 24 1998 SOFTWARE DATE 06 Aug 1996 25 * MODEL # R1121N1114 MODEL # B4121P1155 26 * HWDR P/N # 1 HDWR P/N # _ 27 * SERIAL # R0010A SERIAL # SSG0226478 28 * MANUFACTUR DATE 6H07 MANUFACTUR DATE 7E02 29 * OPTIONS LIST IB 30 * 31 * (Basic) (M12) 32 * COPYRIGHT 1991-1994 MOTOROLA INC. COPYRIGHT 1991-2000 MOTOROLA INC. 33 * SFTW P/N # 98-P39949M SFTW P/N # 61-G10002A 34 * SOFTWARE VER # 5 SOFTWARE VER # 1 35 * SOFTWARE REV # 0 SOFTWARE REV # 3 36 * SOFTWARE DATE 20 JAN 1994 SOFTWARE DATE Mar 13 2000 37 * MODEL # A11121P116 MODEL # P143T12NR1 38 * HDWR P/N # _ HWDR P/N # 1 39 * SERIAL # SSG0049809 SERIAL # P003UD 40 * MANUFACTUR DATE 417AMA199 MANUFACTUR DATE 0C27 41 * OPTIONS LIST AB 42 * 43 * (M12+T) (M12+T later version) 44 * COPYRIGHT 1991-2002 MOTOROLA INC. COPYRIGHT 1991-2003 MOTOROLA INC. 45 * SFTW P/N # 61-G10268A SFTW P/N # 61-G10268A 46 * SOFTWARE VER # 2 SOFTWARE VER # 2 47 * SOFTWARE REV # 0 SOFTWARE REV # 1 48 * SOFTWARE DATE AUG 14 2002 SOFTWARE DATE APR 16 2003 49 * MODEL # P283T12T11 MODEL # P273T12T12 50 * HWDR P/N # 2 HWDR P/N # 2 51 * SERIAL # P04DC2 SERIAL # P05Z7Z 52 * MANUFACTUR DATE 2J17 MANUFACTUR DATE 3G15 53 * 54 * -------------------------------------------------------------------------- 55 * Reg Clemens (June 2009) 56 * BUG[1220] OK, big patch, but mostly done mechanically. Change direct calls to write 57 * to clockstats to a call to oncore_log, which now calls the old routine plus msyslog. 58 * Have to set the LOG_LEVELS of the calls for msyslog, and this was done by hand. New 59 * routine oncore_log. 60 * -------------------------------------------------------------------------- 61 * Reg Clemens (June 2009) 62 * BUG[1218] The comment on where the oncore driver gets its input file does not 63 * agree with the code. Change the comment. 64 * -------------------------------------------------------------------------- 65 * Reg Clemens (June 2009) 66 * change exit statements to return(0) in main program. I had assumed that if the 67 * PPS driver did not start for some reason, we shuould stop NTPD itelf. Others 68 * disagree. We now give an ERR log message and stop this driver. 69 * -------------------------------------------------------------------------- 70 * Reg Clemens (June 2009) 71 * A bytes available message for the input subsystem (Debug message). 72 * -------------------------------------------------------------------------- 73 * Reg Clemens (Nov 2008) 74 * This code adds a message for TRAIM messages. Users often worry about the 75 * driver not starting up, and it is often because of signal strength being low. 76 * Low signal strength will give TRAIM messages. 77 * -------------------------------------------------------------------------- 78 * Reg Clemens (Nov 2008) 79 * Add waiting on Almanac Message. 80 * -------------------------------------------------------------------------- 81 * Reg Clemens (Nov 2008) 82 * Add back in @@Bl code to do the @@Bj/@@Gj that is in later ONCOREs 83 * LEAP SECONDS: All of the ONCORE receivers, VP -> M12T have the @@Bj command 84 * that says 'Leap Pending'. As documented it only becomes true in the month 85 * before the leap second is to be applied, but in practice at least some of 86 * the receivers turn this indicator on as soon as the message is posted, which 87 * can be 6months early. As such, we use the Bj command to turn on the 88 * instance->pp->leap indicator but only run this test in December and June for 89 * updates on 1Jan and 1July. 90 * 91 * The @@Gj command exists in later ONCOREs, and it gives the exact date 92 * and size of the Leap Update. It can be emulated in the VP using the @@Bl 93 * command which reads the raw Satellite Broadcast Messages. 94 * We use these two commands to print informative messages in the clockstats 95 * file once per day as soon as the message appears on the satellites. 96 * -------------------------------------------------------------------------- 97 * Reg Clemens (Feb 2006) 98 * Fix some gcc4 compiler complaints 99 * Fix possible segfault in oncore_init_shmem 100 * change all (possible) fprintf(stderr, to record_clock_stats 101 * Apply patch from Russell J. Yount <rjy@cmu.edu> Fixed (new) MT12+T UTC not correct 102 * immediately after new Almanac Read. 103 * Apply patch for new PPS implementation by Rodolfo Giometti <giometti@linux.it> 104 * now code can use old Ulrich Windl <Ulrich.Windl@rz.uni-regensburg.de> or 105 * the new one. Compiles depending on timepps.h seen. 106 * -------------------------------------------------------------------------- 107 * Luis Batanero Guerrero <luisba@rao.es> (Dec 2005) Patch for leap seconds 108 * (the oncore driver was setting the wrong ntpd variable) 109 * -------------------------------------------------------------------------- 110 * Reg.Clemens (Mar 2004) 111 * Support for interfaces other than PPSAPI removed, for Solaris, SunOS, 112 * SCO, you now need to use one of the timepps.h files in the root dir. 113 * this driver will 'grab' it for you if you dont have one in /usr/include 114 * -------------------------------------------------------------------------- 115 * This code uses the two devices 116 * /dev/oncore.serial.n 117 * /dev/oncore.pps.n 118 * which may be linked to the same device. 119 * and can read initialization data from the file 120 * /etc/ntp.oncoreN, /etc/ntp.oncore.N, or /etc/ntp.oncore, where 121 * n or N are the unit number, viz 127.127.30.N. 122 * -------------------------------------------------------------------------- 123 * Reg.Clemens <reg@dwf.com> Sep98. 124 * Original code written for FreeBSD. 125 * With these mods it works on FreeBSD, SunOS, Solaris and Linux 126 * (SunOS 4.1.3 + ppsclock) 127 * (Solaris7 + MU4) 128 * (RedHat 5.1 2.0.35 + PPSKit, 2.1.126 + or later). 129 * 130 * Lat,Long,Ht, cable-delay, offset, and the ReceiverID (along with the 131 * state machine state) are printed to CLOCKSTATS if that file is enabled 132 * in /etc/ntp.conf. 133 * 134 * -------------------------------------------------------------------------- 135 * 136 * According to the ONCORE manual (TRM0003, Rev 3.2, June 1998, page 3.13) 137 * doing an average of 10000 valid 2D and 3D fixes is what the automatic 138 * site survey mode does. Looking at the output from the receiver 139 * it seems like it is only using 3D fixes. 140 * When we do it ourselves, take 10000 3D fixes. 141 */ 142 143 #define POS_HOLD_AVERAGE 10000 /* nb, 10000s ~= 2h45m */ 144 145 /* 146 * ONCORE_SHMEM_STATUS will create a mmap(2)'ed file named according to a 147 * "STATUS" line in the oncore config file, which contains the most recent 148 * copy of all types of messages we recognize. This file can be mmap(2)'ed 149 * by monitoring and statistics programs. 150 * 151 * See separate HTML documentation for this option. 152 */ 153 154 #ifdef HAVE_CONFIG_H 155 #include <config.h> 156 #endif 157 158 #if defined(REFCLOCK) && defined(CLOCK_ONCORE) 159 160 #include "ntpd.h" 161 #include "ntp_io.h" 162 #include "ntp_unixtime.h" 163 #include "ntp_refclock.h" 164 #include "ntp_calendar.h" 165 #include "ntp_calgps.h" 166 #include "ntp_stdlib.h" 167 168 #include <stdio.h> 169 #include <stdarg.h> 170 #include <ctype.h> 171 #include <sys/stat.h> 172 #ifdef ONCORE_SHMEM_STATUS 173 # ifdef HAVE_SYS_MMAN_H 174 # include <sys/mman.h> 175 # ifndef MAP_FAILED 176 # define MAP_FAILED ((u_char *) -1) 177 # endif /* MAP_FAILED */ 178 # endif /* HAVE_SYS_MMAN_H */ 179 #endif /* ONCORE_SHMEM_STATUS */ 180 181 #ifdef HAVE_PPSAPI 182 # include "ppsapi_timepps.h" 183 #endif 184 185 struct Bl { 186 int dt_ls; 187 int dt_lsf; 188 int WN; 189 int DN; 190 int WN_lsf; 191 int DN_lsf; 192 int wn_flg; 193 int lsf_flg; 194 int Bl_day; 195 } Bl; 196 197 enum receive_state { 198 ONCORE_NO_IDEA, 199 ONCORE_CHECK_ID, 200 ONCORE_CHECK_CHAN, 201 ONCORE_HAVE_CHAN, 202 ONCORE_RESET_SENT, 203 ONCORE_TEST_SENT, 204 ONCORE_INIT, 205 ONCORE_ALMANAC, 206 ONCORE_RUN 207 }; 208 209 enum site_survey_state { 210 ONCORE_SS_UNKNOWN, 211 ONCORE_SS_TESTING, 212 ONCORE_SS_HW, 213 ONCORE_SS_SW, 214 ONCORE_SS_DONE 215 }; 216 217 enum antenna_state { 218 ONCORE_ANTENNA_UNKNOWN = -1, 219 ONCORE_ANTENNA_OK = 0, 220 ONCORE_ANTENNA_OC = 1, 221 ONCORE_ANTENNA_UC = 2, 222 ONCORE_ANTENNA_NV = 3 223 }; 224 225 /* Model Name, derived from the @@Cj message. 226 * Used to initialize some variables. 227 */ 228 229 enum oncore_model { 230 ONCORE_BASIC, 231 ONCORE_PVT6, 232 ONCORE_VP, 233 ONCORE_UT, 234 ONCORE_UTPLUS, 235 ONCORE_GT, 236 ONCORE_GTPLUS, 237 ONCORE_SL, 238 ONCORE_M12, 239 ONCORE_UNKNOWN 240 }; 241 242 /* the bits that describe these properties are in the same place 243 * on the VP/UT, but have moved on the M12. As such we extract 244 * them, and use them from this struct. 245 * 246 */ 247 248 struct RSM { 249 u_char posn0D; 250 u_char posn2D; 251 u_char posn3D; 252 u_char bad_almanac; 253 u_char bad_fix; 254 }; 255 256 /* It is possible to test the VP/UT each cycle (@@Ea or equivalent) to 257 * see what mode it is in. The bits on the M12 are multiplexed with 258 * other messages, so we have to 'keep' the last known mode here. 259 */ 260 261 enum posn_mode { 262 MODE_UNKNOWN, 263 MODE_0D, 264 MODE_2D, 265 MODE_3D 266 }; 267 268 struct instance { 269 int unit; /* 127.127.30.unit */ 270 struct refclockproc *pp; 271 struct peer *peer; 272 273 int ttyfd; /* TTY file descriptor */ 274 int ppsfd; /* PPS file descriptor */ 275 int shmemfd; /* Status shm descriptor */ 276 pps_handle_t pps_h; 277 pps_params_t pps_p; 278 enum receive_state o_state; /* Receive state */ 279 enum posn_mode mode; /* 0D, 2D, 3D */ 280 enum site_survey_state site_survey; /* Site Survey state */ 281 enum antenna_state ant_state; /* antenna state */ 282 283 int Bj_day; 284 285 u_long delay; /* ns */ 286 long offset; /* ns */ 287 288 u_char *shmem; 289 char *shmem_fname; 290 u_int shmem_Cb; 291 u_int shmem_Ba; 292 u_int shmem_Ea; 293 u_int shmem_Ha; 294 u_char shmem_reset; 295 u_char shmem_Posn; 296 u_char shmem_bad_Ea; 297 u_char almanac_from_shmem; 298 299 double ss_lat; 300 double ss_long; 301 double ss_ht; 302 double dH; 303 int ss_count; 304 u_char posn_set; 305 306 enum oncore_model model; 307 u_int version; 308 u_int revision; 309 310 u_char chan; /* 6 for PVT6 or BASIC, 8 for UT/VP, 12 for m12, 0 if unknown */ 311 s_char traim; /* do we have traim? yes UT/VP, M12+T, no BASIC, GT, M12, -1 unknown, 0 no, +1 yes */ 312 /* the following 7 are all timing counters */ 313 u_char traim_delay; /* seconds counter, waiting for reply */ 314 u_char count; /* cycles thru Ea before starting */ 315 u_char count1; /* cycles thru Ea after SS_TESTING, waiting for SS_HW */ 316 u_char count2; /* cycles thru Ea after count, to check for @@Ea */ 317 u_char count3; /* cycles thru Ea checking for # channels */ 318 u_char count4; /* cycles thru leap after Gj to issue Bj */ 319 u_char count5; /* cycles thru get_timestamp waiting for valid UTC correction */ 320 u_char count5_set; /* only set count5 once */ 321 u_char counta; /* count for waiting on almanac message */ 322 u_char pollcnt; 323 u_char timeout; /* count to retry Cj after Fa self-test */ 324 u_char max_len; /* max length message seen by oncore_log, for debugging */ 325 u_char max_count; /* count for message statistics */ 326 327 struct RSM rsm; /* bits extracted from Receiver Status Msg in @@Ea */ 328 struct Bl Bl; /* Satellite Broadcast Data Message */ 329 u_char printed; 330 u_char polled; 331 u_long ev_serial; 332 unsigned Rcvptr; 333 u_char Rcvbuf[500]; 334 u_char BEHa[160]; /* Ba, Ea or Ha */ 335 u_char BEHn[80]; /* Bn , En , or Hn */ 336 u_char Cj[300]; 337 u_char Ag; /* Satellite mask angle */ 338 u_char saw_At; 339 u_char saw_Ay; 340 u_char saw_Az; 341 s_char saw_Bj; 342 s_char saw_Gj; 343 u_char have_dH; 344 u_char init_type; 345 s_char saw_tooth; 346 s_char chan_in; /* chan number from INPUT, will always use it */ 347 u_char chan_id; /* chan number determined from part number */ 348 u_char chan_ck; /* chan number determined by sending commands to hardware */ 349 s_char traim_in; /* TRAIM from INPUT, will always use ON/OFF specified */ 350 s_char traim_id; /* TRAIM determined from part number */ 351 u_char traim_ck; /* TRAIM determined by sending commands to hardware */ 352 u_char once; /* one pass code at top of BaEaHa */ 353 s_char assert; 354 u_char hardpps; 355 s_char pps_control; /* PPS control, M12 only */ 356 s_char pps_control_msg_seen; 357 }; 358 359 #define rcvbuf instance->Rcvbuf 360 #define rcvptr instance->Rcvptr 361 362 static int oncore_start (int, struct peer *); 363 static void oncore_poll (int, struct peer *); 364 static void oncore_shutdown (int, struct peer *); 365 static void oncore_consume (struct instance *); 366 static void oncore_read_config (struct instance *); 367 static void oncore_receive (struct recvbuf *); 368 static int oncore_ppsapi (struct instance *); 369 static void oncore_get_timestamp (struct instance *, long, long); 370 static void oncore_init_shmem (struct instance *); 371 372 static void oncore_antenna_report (struct instance *, enum antenna_state); 373 static void oncore_chan_test (struct instance *); 374 static void oncore_check_almanac (struct instance *); 375 static void oncore_check_antenna (struct instance *); 376 static void oncore_check_leap_sec (struct instance *); 377 static int oncore_checksum_ok (u_char *, int); 378 static void oncore_compute_dH (struct instance *); 379 static void oncore_load_almanac (struct instance *); 380 static void oncore_log (struct instance *, int, const char *); 381 static int oncore_log_f (struct instance *, int, const char *, ...) 382 NTP_PRINTF(3, 4); 383 static void oncore_print_Cb (struct instance *, u_char *); 384 /* static void oncore_print_array (u_char *, int); */ 385 static void oncore_print_posn (struct instance *); 386 static void oncore_sendmsg (struct instance *, u_char *, size_t); 387 static void oncore_set_posn (struct instance *); 388 static void oncore_set_traim (struct instance *); 389 static void oncore_shmem_get_3D (struct instance *); 390 static void oncore_ss (struct instance *); 391 static int oncore_wait_almanac (struct instance *); 392 static void oncore_feed_clockproc (struct instance *); 393 394 static void oncore_msg_any (struct instance *, u_char *, size_t, int); 395 static void oncore_msg_Adef (struct instance *, u_char *, size_t); 396 static void oncore_msg_Ag (struct instance *, u_char *, size_t); 397 static void oncore_msg_As (struct instance *, u_char *, size_t); 398 static void oncore_msg_At (struct instance *, u_char *, size_t); 399 static void oncore_msg_Ay (struct instance *, u_char *, size_t); 400 static void oncore_msg_Az (struct instance *, u_char *, size_t); 401 static void oncore_msg_BaEaHa (struct instance *, u_char *, size_t); 402 static void oncore_msg_Bd (struct instance *, u_char *, size_t); 403 static void oncore_msg_Bj (struct instance *, u_char *, size_t); 404 static void oncore_msg_Bl (struct instance *, u_char *, size_t); 405 static void oncore_msg_BnEnHn (struct instance *, u_char *, size_t); 406 static void oncore_msg_CaFaIa (struct instance *, u_char *, size_t); 407 static void oncore_msg_Cb (struct instance *, u_char *, size_t); 408 static void oncore_msg_Cf (struct instance *, u_char *, size_t); 409 static void oncore_msg_Cj (struct instance *, u_char *, size_t); 410 static void oncore_msg_Cj_id (struct instance *, u_char *, size_t); 411 static void oncore_msg_Cj_init (struct instance *, u_char *, size_t); 412 static void oncore_msg_Ga (struct instance *, u_char *, size_t); 413 static void oncore_msg_Gb (struct instance *, u_char *, size_t); 414 static void oncore_msg_Gc (struct instance *, u_char *, size_t); 415 static void oncore_msg_Gj (struct instance *, u_char *, size_t); 416 static void oncore_msg_Sz (struct instance *, u_char *, size_t); 417 418 struct refclock refclock_oncore = { 419 oncore_start, /* start up driver */ 420 oncore_shutdown, /* shut down driver */ 421 oncore_poll, /* transmit poll message */ 422 noentry, /* not used */ 423 noentry, /* not used */ 424 noentry, /* not used */ 425 NOFLAGS /* not used */ 426 }; 427 428 /* 429 * Understanding the next bit here is not easy unless you have a manual 430 * for the the various Oncore Models. 431 */ 432 433 static struct msg_desc { 434 const char flag[3]; 435 const int len; 436 void (*handler) (struct instance *, u_char *, size_t); 437 const char *fmt; 438 int shmem; 439 } oncore_messages[] = { 440 /* Ea and En first since they're most common */ 441 { "Ea", 76, oncore_msg_BaEaHa, "mdyyhmsffffaaaaoooohhhhmmmmvvhhddtntimsdimsdimsdimsdimsdimsdimsdimsdsC", 0 }, 442 { "Ba", 68, oncore_msg_BaEaHa, "mdyyhmsffffaaaaoooohhhhmmmmvvhhddtntimsdimsdimsdimsdimsdimsdsC", 0 }, 443 { "Ha", 154, oncore_msg_BaEaHa, "mdyyhmsffffaaaaoooohhhhmmmmaaaaoooohhhhmmmmVVvvhhddntimsiddimsiddimsiddimsiddimsiddimsiddimsiddimsiddimsiddimsiddimsiddimsiddssrrccooooTTushmvvvvvvC", 0 }, 444 { "Bn", 59, oncore_msg_BnEnHn, "otaapxxxxxxxxxxpysreensffffsffffsffffsffffsffffsffffC", 0 }, 445 { "En", 69, oncore_msg_BnEnHn, "otaapxxxxxxxxxxpysreensffffsffffsffffsffffsffffsffffsffffsffffC", 0 }, 446 { "Hn", 78, oncore_msg_BnEnHn, "", 0 }, 447 { "Ab", 10, 0, "", 0 }, 448 { "Ac", 11, 0, "", 0 }, 449 { "Ad", 11, oncore_msg_Adef, "", 0 }, 450 { "Ae", 11, oncore_msg_Adef, "", 0 }, 451 { "Af", 15, oncore_msg_Adef, "", 0 }, 452 { "Ag", 8, oncore_msg_Ag, "", 0 }, /* Satellite mask angle */ 453 { "As", 20, oncore_msg_As, "", 0 }, 454 { "At", 8, oncore_msg_At, "", 0 }, 455 { "Au", 12, 0, "", 0 }, 456 { "Av", 8, 0, "", 0 }, 457 { "Aw", 8, 0, "", 0 }, 458 { "Ay", 11, oncore_msg_Ay, "", 0 }, 459 { "Az", 11, oncore_msg_Az, "", 0 }, 460 { "AB", 8, 0, "", 0 }, 461 { "Bb", 92, 0, "", 0 }, 462 { "Bd", 23, oncore_msg_Bd, "", 0 }, 463 { "Bj", 8, oncore_msg_Bj, "", 0 }, 464 { "Bl", 41, oncore_msg_Bl, "", 0 }, 465 { "Ca", 9, oncore_msg_CaFaIa, "", 0 }, 466 { "Cb", 33, oncore_msg_Cb, "", 0 }, 467 { "Cf", 7, oncore_msg_Cf, "", 0 }, 468 { "Cg", 8, 0, "", 0 }, 469 { "Ch", 9, 0, "", 0 }, 470 { "Cj", 294, oncore_msg_Cj, "", 0 }, 471 { "Ek", 71, 0, "", 0 }, 472 { "Fa", 9, oncore_msg_CaFaIa, "", 0 }, 473 { "Ga", 20, oncore_msg_Ga, "", 0 }, 474 { "Gb", 17, oncore_msg_Gb, "", 0 }, 475 { "Gc", 8, oncore_msg_Gc, "", 0 }, 476 { "Gd", 8, 0, "", 0 }, 477 { "Ge", 8, 0, "", 0 }, 478 { "Gj", 21, oncore_msg_Gj, "", 0 }, 479 { "Ia", 10, oncore_msg_CaFaIa, "", 0 }, 480 { "Sz", 8, oncore_msg_Sz, "", 0 }, 481 { {0}, 7, 0, "", 0 } 482 }; 483 484 485 static u_char oncore_cmd_Aa[] = { 'A', 'a', 0, 0, 0 }; /* 6/8 Time of Day */ 486 static u_char oncore_cmd_Ab[] = { 'A', 'b', 0, 0, 0 }; /* 6/8 GMT Correction */ 487 static u_char oncore_cmd_AB[] = { 'A', 'B', 4 }; /* VP Application Type: Static */ 488 static u_char oncore_cmd_Ac[] = { 'A', 'c', 0, 0, 0, 0 }; /* 6/8 Date */ 489 static u_char oncore_cmd_Ad[] = { 'A', 'd', 0,0,0,0 }; /* 6/8 Latitude */ 490 static u_char oncore_cmd_Ae[] = { 'A', 'e', 0,0,0,0 }; /* 6/8 Longitude */ 491 static u_char oncore_cmd_Af[] = { 'A', 'f', 0,0,0,0, 0 }; /* 6/8 Height */ 492 static u_char oncore_cmd_Ag[] = { 'A', 'g', 0 }; /* 6/8/12 Satellite Mask Angle */ 493 static u_char oncore_cmd_Agx[] = { 'A', 'g', 0xff }; /* 6/8/12 Satellite Mask Angle: read */ 494 static u_char oncore_cmd_As[] = { 'A', 's', 0,0,0,0, 0,0,0,0, 0,0,0,0, 0 }; /* 6/8/12 Posn Hold Parameters */ 495 static u_char oncore_cmd_Asx[] = { 'A', 's', 0x7f,0xff,0xff,0xff, /* 6/8/12 Posn Hold Readback */ 496 0x7f,0xff,0xff,0xff, /* on UT+ this doesnt work with 0xff */ 497 0x7f,0xff,0xff,0xff, 0xff }; /* but does work with 0x7f (sigh). */ 498 static u_char oncore_cmd_At0[] = { 'A', 't', 0 }; /* 6/8 Posn Hold: off */ 499 static u_char oncore_cmd_At1[] = { 'A', 't', 1 }; /* 6/8 Posn Hold: on */ 500 static u_char oncore_cmd_At2[] = { 'A', 't', 2 }; /* 6/8 Posn Hold: Start Site Survey */ 501 static u_char oncore_cmd_Atx[] = { 'A', 't', 0xff }; /* 6/8 Posn Hold: Read Back */ 502 static u_char oncore_cmd_Au[] = { 'A', 'u', 0,0,0,0, 0 }; /* GT/M12 Altitude Hold Ht. */ 503 static u_char oncore_cmd_Av0[] = { 'A', 'v', 0 }; /* VP/GT Altitude Hold: off */ 504 static u_char oncore_cmd_Av1[] = { 'A', 'v', 1 }; /* VP/GT Altitude Hold: on */ 505 static u_char oncore_cmd_Aw[] = { 'A', 'w', 1 }; /* 6/8/12 UTC/GPS time selection */ 506 static u_char oncore_cmd_Ay[] = { 'A', 'y', 0, 0, 0, 0 }; /* Timing 1PPS time offset: set */ 507 static u_char oncore_cmd_Ayx[] = { 'A', 'y', 0xff, 0xff, 0xff, 0xff }; /* Timing 1PPS time offset: Read */ 508 static u_char oncore_cmd_Az[] = { 'A', 'z', 0, 0, 0, 0 }; /* 6/8UT/12 1PPS Cable Delay: set */ 509 static u_char oncore_cmd_Azx[] = { 'A', 'z', 0xff, 0xff, 0xff, 0xff }; /* 6/8UT/12 1PPS Cable Delay: Read */ 510 static u_char oncore_cmd_Ba0[] = { 'B', 'a', 0 }; /* 6 Position/Data/Status: off */ 511 static u_char oncore_cmd_Ba[] = { 'B', 'a', 1 }; /* 6 Position/Data/Status: on */ 512 static u_char oncore_cmd_Bb[] = { 'B', 'b', 1 }; /* 6/8/12 Visible Satellites */ 513 static u_char oncore_cmd_Bd[] = { 'B', 'd', 1 }; /* 6/8/12? Almanac Status Msg. */ 514 static u_char oncore_cmd_Be[] = { 'B', 'e', 1 }; /* 6/8/12 Request Almanac Data */ 515 static u_char oncore_cmd_Bj[] = { 'B', 'j', 0 }; /* 6/8 Leap Second Pending */ 516 static u_char oncore_cmd_Bl[] = { 'B', 'l', 1 }; /* VP Satellite Broadcast Data Msg */ 517 static u_char oncore_cmd_Bn0[] = { 'B', 'n', 0, 1, 0,10, 2, 0,0,0, 0,0,0,0,0,0,0 }; /* 6 TRAIM setup/status: msg off, traim on */ 518 static u_char oncore_cmd_Bn[] = { 'B', 'n', 1, 1, 0,10, 2, 0,0,0, 0,0,0,0,0,0,0 }; /* 6 TRAIM setup/status: msg on, traim on */ 519 static u_char oncore_cmd_Bnx[] = { 'B', 'n', 0, 0, 0,10, 2, 0,0,0, 0,0,0,0,0,0,0 }; /* 6 TRAIM setup/status: msg off, traim off */ 520 static u_char oncore_cmd_Ca[] = { 'C', 'a' }; /* 6 Self Test */ 521 static u_char oncore_cmd_Cf[] = { 'C', 'f' }; /* 6/8/12 Set to Defaults */ 522 static u_char oncore_cmd_Cg[] = { 'C', 'g', 1 }; /* VP Posn Fix/Idle Mode */ 523 static u_char oncore_cmd_Cj[] = { 'C', 'j' }; /* 6/8/12 Receiver ID */ 524 static u_char oncore_cmd_Ea0[] = { 'E', 'a', 0 }; /* 8 Position/Data/Status: off */ 525 static u_char oncore_cmd_Ea[] = { 'E', 'a', 1 }; /* 8 Position/Data/Status: on */ 526 static u_char oncore_cmd_Ek[] = { 'E', 'k', 0 }; /* just turn off */ /* 8 Posn/Status/Data - extension */ 527 static u_char oncore_cmd_En0[] = { 'E', 'n', 0, 1, 0,10, 2, 0,0,0, 0,0,0,0,0,0,0 }; /* 8/GT TRAIM setup/status: msg off, traim on */ 528 static u_char oncore_cmd_En[] = { 'E', 'n', 1, 1, 0,10, 2, 0,0,0, 0,0,0,0,0,0,0 }; /* 8/GT TRAIM setup/status: msg on, traim on */ 529 static u_char oncore_cmd_Enx[] = { 'E', 'n', 0, 0, 0,10, 2, 0,0,0, 0,0,0,0,0,0,0 }; /* 8/GT TRAIM setup/status: msg off, traim off */ 530 static u_char oncore_cmd_Fa[] = { 'F', 'a' }; /* 8 Self Test */ 531 static u_char oncore_cmd_Ga[] = { 'G', 'a', 0,0,0,0, 0,0,0,0, 0,0,0,0, 0 }; /* 12 Position Set */ 532 static u_char oncore_cmd_Gax[] = { 'G', 'a', 0xff, 0xff, 0xff, 0xff, /* 12 Position Set: Read */ 533 0xff, 0xff, 0xff, 0xff, /* */ 534 0xff, 0xff, 0xff, 0xff, 0xff }; /* */ 535 static u_char oncore_cmd_Gb[] = { 'G', 'b', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; /* 12 set Date/Time */ 536 static u_char oncore_cmd_Gc[] = { 'G', 'c', 0 }; /* 12 PPS Control: Off, On, 1+satellite,TRAIM */ 537 static u_char oncore_cmd_Gd0[] = { 'G', 'd', 0 }; /* 12 Position Control: 3D (no hold) */ 538 static u_char oncore_cmd_Gd1[] = { 'G', 'd', 1 }; /* 12 Position Control: 0D (3D hold) */ 539 static u_char oncore_cmd_Gd2[] = { 'G', 'd', 2 }; /* 12 Position Control: 2D (Alt Hold) */ 540 static u_char oncore_cmd_Gd3[] = { 'G', 'd', 3 }; /* 12 Position Coltrol: Start Site Survey */ 541 static u_char oncore_cmd_Ge0[] = { 'G', 'e', 0 }; /* M12+T TRAIM: off */ 542 static u_char oncore_cmd_Ge[] = { 'G', 'e', 1 }; /* M12+T TRAIM: on */ 543 static u_char oncore_cmd_Gj[] = { 'G', 'j' }; /* 8?/12 Leap Second Pending */ 544 static u_char oncore_cmd_Ha0[] = { 'H', 'a', 0 }; /* 12 Position/Data/Status: off */ 545 static u_char oncore_cmd_Ha[] = { 'H', 'a', 1 }; /* 12 Position/Data/Status: on */ 546 static u_char oncore_cmd_Hn0[] = { 'H', 'n', 0 }; /* 12 TRAIM Status: off */ 547 static u_char oncore_cmd_Hn[] = { 'H', 'n', 1 }; /* 12 TRAIM Status: on */ 548 static u_char oncore_cmd_Ia[] = { 'I', 'a' }; /* 12 Self Test */ 549 550 /* it appears that as of 1997/1998, the UT had As,At, but not Au,Av 551 * the GT had Au,Av, but not As,At 552 * This was as of v2.0 of both firmware sets. possibly 1.3 for UT. 553 * Bj in UT at v1.3 554 * dont see Bd in UT/GT thru 1999 555 * Gj in UT as of 3.0, 1999 , Bj as of 1.3 556 */ 557 558 #define DEVICE1 "/dev/oncore.serial.%d" /* name of serial device */ 559 #define DEVICE2 "/dev/oncore.pps.%d" /* name of pps device */ 560 561 #define SPEED B9600 /* Oncore Binary speed (9600 bps) */ 562 563 /* 564 * Assemble and disassemble 32bit signed quantities from a buffer. 565 * 566 */ 567 568 /* to buffer, int w, u_char *buf */ 569 #define w32_buf(buf,w) { u_int i_tmp; \ 570 i_tmp = (w<0) ? (~(-w)+1) : (w); \ 571 (buf)[0] = (i_tmp >> 24) & 0xff; \ 572 (buf)[1] = (i_tmp >> 16) & 0xff; \ 573 (buf)[2] = (i_tmp >> 8) & 0xff; \ 574 (buf)[3] = (i_tmp ) & 0xff; \ 575 } 576 577 #define w32(buf) (((buf)[0]&0xff) << 24 | \ 578 ((buf)[1]&0xff) << 16 | \ 579 ((buf)[2]&0xff) << 8 | \ 580 ((buf)[3]&0xff) ) 581 582 /* from buffer, char *buf, result to an int */ 583 #define buf_w32(buf) (((buf)[0]&0200) ? (-(~w32(buf)+1)) : w32(buf)) 584 585 586 /* 587 * oncore_start - initialize data for processing 588 */ 589 590 static int 591 oncore_start( 592 int unit, 593 struct peer *peer 594 ) 595 { 596 #define STRING_LEN 32 597 register struct instance *instance; 598 struct refclockproc *pp; 599 int fd1, fd2; 600 char device1[STRING_LEN], device2[STRING_LEN]; 601 #ifndef SYS_WINNT 602 struct stat stat1, stat2; 603 #endif 604 605 /* create instance structure for this unit */ 606 607 instance = emalloc(sizeof(*instance)); 608 memset(instance, 0, sizeof(*instance)); 609 610 /* initialize miscellaneous variables */ 611 612 pp = peer->procptr; 613 instance->pp = pp; 614 instance->unit = unit; 615 instance->peer = peer; 616 instance->assert = 1; 617 instance->once = 1; 618 619 instance->Bj_day = -1; 620 instance->traim = -1; 621 instance->traim_in = -1; 622 instance->chan_in = -1; 623 instance->pps_control = -1; /* PPS control, M12 only */ 624 instance->pps_control_msg_seen = -1; /* Have seen response to Gc msg */ 625 instance->model = ONCORE_UNKNOWN; 626 instance->mode = MODE_UNKNOWN; 627 instance->site_survey = ONCORE_SS_UNKNOWN; 628 instance->Ag = 0xff; /* Satellite mask angle, unset by user */ 629 instance->ant_state = ONCORE_ANTENNA_UNKNOWN; 630 631 peer->flags &= ~FLAG_PPS; /* PPS not active yet */ 632 peer->precision = -26; 633 peer->minpoll = 4; 634 peer->maxpoll = 4; 635 pp->clockdesc = "Motorola Oncore GPS Receiver"; 636 memcpy((char *)&pp->refid, "GPS\0", (size_t) 4); 637 638 oncore_log(instance, LOG_NOTICE, "ONCORE DRIVER -- CONFIGURING"); 639 instance->o_state = ONCORE_NO_IDEA; 640 oncore_log(instance, LOG_NOTICE, "state = ONCORE_NO_IDEA"); 641 642 /* Now open files. 643 * This is a bit complicated, a we dont want to open the same file twice 644 * (its a problem on some OS), and device2 may not exist for the new PPS 645 */ 646 647 (void)snprintf(device1, sizeof(device1), DEVICE1, unit); 648 (void)snprintf(device2, sizeof(device2), DEVICE2, unit); 649 650 /* OPEN DEVICES */ 651 /* opening different devices for fd1 and fd2 presents no problems */ 652 /* opening the SAME device twice, seems to be OS dependent. 653 (a) on Linux (no streams) no problem 654 (b) on SunOS (and possibly Solaris, untested), (streams) 655 never see the line discipline. 656 Since things ALWAYS work if we only open the device once, we check 657 to see if the two devices are in fact the same, then proceed to 658 do one open or two. 659 660 For use with linuxPPS we assume that the N_TTY file has been opened 661 and that the line discipline has been changed to N_PPS by another 662 program (say ppsldisc) so that the two files expected by the oncore 663 driver can be opened. 664 665 Note that the linuxPPS N_PPS file is just like a N_TTY, so we can do 666 the stat below without error even though the file has already had its 667 line discipline changed by another process. 668 669 The Windows port of ntpd arranges to return duplicate handles for 670 multiple opens of the same serial device, and doesn't have inodes 671 for serial handles, so we just open both on Windows. 672 */ 673 #ifndef SYS_WINNT 674 if (stat(device1, &stat1)) { 675 oncore_log_f(instance, LOG_ERR, "Can't stat fd1 (%s)", 676 device1); 677 return(0); /* exit, no file, can't start driver */ 678 } 679 680 if (stat(device2, &stat2)) { 681 stat2.st_dev = stat2.st_ino = -2; 682 oncore_log_f(instance, LOG_ERR, "Can't stat fd2 (%s) %d %m", 683 device2, errno); 684 } 685 #endif /* !SYS_WINNT */ 686 687 fd1 = refclock_open(&peer->srcadr, device1, SPEED, LDISC_RAW); 688 if (fd1 <= 0) { 689 oncore_log_f(instance, LOG_ERR, "Can't open fd1 (%s)", 690 device1); 691 return(0); /* exit, can't open file, can't start driver */ 692 } 693 694 /* for LINUX the PPS device is the result of a line discipline. 695 It seems simplest to let an external program create the appropriate 696 /dev/pps<n> file, and only check (carefully) for its existance here 697 */ 698 699 #ifndef SYS_WINNT 700 if ((stat1.st_dev == stat2.st_dev) && (stat1.st_ino == stat2.st_ino)) /* same device here */ 701 fd2 = fd1; 702 else 703 #endif /* !SYS_WINNT */ 704 { /* different devices here */ 705 if ((fd2=tty_open(device2, O_RDWR, 0777)) < 0) { 706 oncore_log_f(instance, LOG_ERR, 707 "Can't open fd2 (%s)", device2); 708 return(0); /* exit, can't open PPS file, can't start driver */ 709 } 710 } 711 712 /* open ppsapi source */ 713 714 if (time_pps_create(fd2, &instance->pps_h) < 0) { 715 oncore_log(instance, LOG_ERR, "exit, PPSAPI not found in kernel"); 716 return(0); /* exit, don't find PPSAPI in kernel */ 717 } 718 719 /* continue initialization */ 720 721 instance->ttyfd = fd1; 722 instance->ppsfd = fd2; 723 724 /* go read any input data in /etc/ntp.oncoreX or /etc/ntp/oncore.X */ 725 726 oncore_read_config(instance); 727 728 if (!oncore_ppsapi(instance)) 729 return(0); 730 731 pp->io.clock_recv = oncore_receive; 732 pp->io.srcclock = peer; 733 pp->io.datalen = 0; 734 pp->io.fd = fd1; 735 if (!io_addclock(&pp->io)) { 736 oncore_log(instance, LOG_ERR, "can't do io_addclock"); 737 close(fd1); 738 pp->io.fd = -1; 739 free(instance); 740 return (0); 741 } 742 pp->unitptr = instance; 743 744 #ifdef ONCORE_SHMEM_STATUS 745 /* 746 * Before starting ONCORE, lets setup SHMEM 747 * This will include merging an old SHMEM into the new one if 748 * an old one is found. 749 */ 750 751 oncore_init_shmem(instance); 752 #endif 753 754 /* 755 * This will return the Model of the Oncore receiver. 756 * and start the Initialization loop in oncore_msg_Cj. 757 */ 758 759 instance->o_state = ONCORE_CHECK_ID; 760 oncore_log(instance, LOG_NOTICE, "state = ONCORE_CHECK_ID"); 761 762 instance->timeout = 4; 763 oncore_sendmsg(instance, oncore_cmd_Cg, sizeof(oncore_cmd_Cg)); /* Set Posn Fix mode (not Idle (VP)) */ 764 oncore_sendmsg(instance, oncore_cmd_Cj, sizeof(oncore_cmd_Cj)); 765 766 instance->pollcnt = 2; 767 return (1); 768 } 769 770 771 /* 772 * oncore_shutdown - shut down the clock 773 */ 774 775 static void 776 oncore_shutdown( 777 int unit, 778 struct peer *peer 779 ) 780 { 781 register struct instance *instance; 782 struct refclockproc *pp; 783 784 pp = peer->procptr; 785 instance = pp->unitptr; 786 787 if (pp->io.fd != -1) 788 io_closeclock(&pp->io); 789 790 if (instance != NULL) { 791 time_pps_destroy (instance->pps_h); 792 793 close(instance->ttyfd); 794 795 if ((instance->ppsfd != -1) && (instance->ppsfd != instance->ttyfd)) 796 close(instance->ppsfd); 797 798 if (instance->shmemfd) 799 close(instance->shmemfd); 800 801 free(instance); 802 } 803 } 804 805 806 807 /* 808 * oncore_poll - called by the transmit procedure 809 */ 810 811 static void 812 oncore_poll( 813 int unit, 814 struct peer *peer 815 ) 816 { 817 struct instance *instance; 818 819 instance = peer->procptr->unitptr; 820 if (instance->timeout) { 821 instance->timeout--; 822 if (instance->timeout == 0) { 823 oncore_log(instance, LOG_ERR, 824 "Oncore: No response from @@Cj, shutting down driver"); 825 oncore_shutdown(unit, peer); 826 } else { 827 oncore_sendmsg(instance, oncore_cmd_Cj, sizeof(oncore_cmd_Cj)); 828 oncore_log(instance, LOG_WARNING, "Oncore: Resend @@Cj"); 829 } 830 return; 831 } 832 833 if (!instance->pollcnt) 834 refclock_report(peer, CEVNT_TIMEOUT); 835 else 836 instance->pollcnt--; 837 peer->procptr->polls++; 838 instance->polled = 1; 839 } 840 841 842 843 /* 844 * Initialize PPSAPI 845 */ 846 847 static int 848 oncore_ppsapi( 849 struct instance *instance 850 ) 851 { 852 int cap, mode, mode1; 853 const char *cp; 854 855 if (time_pps_getcap(instance->pps_h, &cap) < 0) { 856 oncore_log_f(instance, LOG_ERR, "time_pps_getcap failed: %m"); 857 return (0); 858 } 859 860 if (time_pps_getparams(instance->pps_h, &instance->pps_p) < 0) { 861 oncore_log_f(instance, LOG_ERR, "time_pps_getparams failed: %m"); 862 return (0); 863 } 864 865 /* nb. only turn things on, if someone else has turned something 866 * on before we get here, leave it alone! 867 */ 868 869 if (instance->assert) { 870 cp = "Assert"; 871 mode = PPS_CAPTUREASSERT; 872 mode1 = PPS_OFFSETASSERT; 873 } else { 874 cp = "Clear"; 875 mode = PPS_CAPTURECLEAR; 876 mode1 = PPS_OFFSETCLEAR; 877 } 878 oncore_log_f(instance, LOG_INFO, "Initializing timing to %s.", 879 cp); 880 881 if (!(mode & cap)) { 882 oncore_log_f(instance, LOG_ERR, 883 "Can't set timing to %s, exiting...", cp); 884 return(0); 885 } 886 887 if (!(mode1 & cap)) { 888 oncore_log_f(instance, LOG_NOTICE, 889 "Can't set %s, this will increase jitter.", 890 cp); 891 mode1 = 0; 892 } 893 894 /* only set what is legal */ 895 896 instance->pps_p.mode = (mode | mode1 | PPS_TSFMT_TSPEC) & cap; 897 898 if (time_pps_setparams(instance->pps_h, &instance->pps_p) < 0) { 899 oncore_log_f(instance, LOG_ERR, "ONCORE: time_pps_setparams fails %m"); 900 return(0); /* exit, can't do time_pps_setparans on PPS file */ 901 } 902 903 /* If HARDPPS is on, we tell kernel */ 904 905 if (instance->hardpps) { 906 int i; 907 908 oncore_log(instance, LOG_INFO, "HARDPPS Set."); 909 910 if (instance->assert) 911 i = PPS_CAPTUREASSERT; 912 else 913 i = PPS_CAPTURECLEAR; 914 915 /* we know that 'i' is legal from above */ 916 917 if (time_pps_kcbind(instance->pps_h, PPS_KC_HARDPPS, i, 918 PPS_TSFMT_TSPEC) < 0) { 919 oncore_log_f(instance, LOG_ERR, "time_pps_kcbind failed: %m"); 920 oncore_log(instance, LOG_ERR, "HARDPPS failed, abort..."); 921 return (0); 922 } 923 924 hardpps_enable = 1; 925 } 926 return(1); 927 } 928 929 930 931 #ifdef ONCORE_SHMEM_STATUS 932 static void 933 oncore_init_shmem( 934 struct instance *instance 935 ) 936 { 937 int l, fd; 938 u_char *cp, *cp1, *buf, *shmem_old; 939 struct msg_desc *mp; 940 struct stat sbuf; 941 size_t i, n, n1, shmem_length, shmem_old_size; 942 943 /* 944 * The first thing we do is see if there is an instance->shmem_fname file (still) 945 * out there from a previous run. If so, we copy it in and use it to initialize 946 * shmem (so we won't lose our almanac if we need it). 947 */ 948 949 shmem_old = 0; 950 shmem_old_size = 0; 951 if ((fd = open(instance->shmem_fname, O_RDONLY)) < 0) 952 oncore_log(instance, LOG_WARNING, "ONCORE: Can't open SHMEM file"); 953 else { 954 fstat(fd, &sbuf); 955 shmem_old_size = sbuf.st_size; 956 if (shmem_old_size != 0) { 957 shmem_old = emalloc((unsigned) sbuf.st_size); 958 if (read(fd, shmem_old, shmem_old_size) != shmem_old_size) 959 oncore_log(instance, LOG_WARNING, 960 "ONCORE: truncated/failed read of SHMEM file"); 961 } 962 close(fd); 963 } 964 965 /* OK, we now create the NEW SHMEM. */ 966 967 if ((instance->shmemfd = open(instance->shmem_fname, O_RDWR|O_CREAT|O_TRUNC, 0644)) < 0) { 968 oncore_log(instance, LOG_WARNING, "ONCORE: Can't open shmem"); 969 if (shmem_old) 970 free(shmem_old); 971 972 return; 973 } 974 975 /* see how big it needs to be */ 976 977 n = 1; 978 for (mp=oncore_messages; mp->flag[0]; mp++) { 979 mp->shmem = n; 980 /* Allocate space for multiplexed almanac, and 0D/2D/3D @@Ea records */ 981 if (!strcmp(mp->flag, "Cb")) { 982 instance->shmem_Cb = n; 983 n += (mp->len + 3) * 34; 984 } 985 if (!strcmp(mp->flag, "Ba")) { 986 instance->shmem_Ba = n; 987 n += (mp->len + 3) * 3; 988 } 989 if (!strcmp(mp->flag, "Ea")) { 990 instance->shmem_Ea = n; 991 n += (mp->len + 3) * 3; 992 } 993 if (!strcmp(mp->flag, "Ha")) { 994 instance->shmem_Ha = n; 995 n += (mp->len + 3) * 3; 996 } 997 n += (mp->len + 3); 998 } 999 shmem_length = n + 2; 1000 1001 buf = emalloc(shmem_length); 1002 memset(buf, 0, shmem_length); 1003 1004 /* next build the new SHMEM buffer in memory */ 1005 1006 for (mp=oncore_messages; mp->flag[0]; mp++) { 1007 l = mp->shmem; 1008 buf[l + 0] = mp->len >> 8; 1009 buf[l + 1] = mp->len & 0xff; 1010 buf[l + 2] = 0; 1011 buf[l + 3] = '@'; 1012 buf[l + 4] = '@'; 1013 buf[l + 5] = mp->flag[0]; 1014 buf[l + 6] = mp->flag[1]; 1015 if (!strcmp(mp->flag, "Cb") || !strcmp(mp->flag, "Ba") || !strcmp(mp->flag, "Ea") || !strcmp(mp->flag, "Ha")) { 1016 if (!strcmp(mp->flag, "Cb")) 1017 n = 35; 1018 else 1019 n = 4; 1020 for (i=1; i<n; i++) { 1021 buf[l + i * (mp->len+3) + 0] = mp->len >> 8; 1022 buf[l + i * (mp->len+3) + 1] = mp->len & 0xff; 1023 buf[l + i * (mp->len+3) + 2] = 0; 1024 buf[l + i * (mp->len+3) + 3] = '@'; 1025 buf[l + i * (mp->len+3) + 4] = '@'; 1026 buf[l + i * (mp->len+3) + 5] = mp->flag[0]; 1027 buf[l + i * (mp->len+3) + 6] = mp->flag[1]; 1028 } 1029 } 1030 } 1031 1032 /* we now walk thru the two buffers (shmem_old and buf, soon to become shmem) 1033 * copying the data in shmem_old to buf. 1034 * When we are done we write it out and free both buffers. 1035 * If the structure sizes dont agree, I will not copy. 1036 * This could be due to an addition/deletion or a problem with the disk file. 1037 */ 1038 1039 if (shmem_old) { 1040 if (shmem_old_size == shmem_length) { 1041 for (cp=buf+4, cp1=shmem_old+4; (n = 256*(*(cp-3)) + *(cp-2)); cp+=(n+3), cp1+=(n+3)) { 1042 n1 = 256*(*(cp1-3)) + *(cp1-2); 1043 if (n == 0 || n1 != n || strncmp((char *) cp, (char *) cp1, 4)) 1044 break; 1045 1046 memcpy(cp, cp1, (size_t) n); 1047 } 1048 } 1049 free(shmem_old); 1050 } 1051 1052 i = write(instance->shmemfd, buf, shmem_length); 1053 free(buf); 1054 1055 if (i != shmem_length) { 1056 oncore_log(instance, LOG_ERR, "ONCORE: error writing shmem"); 1057 close(instance->shmemfd); 1058 return; 1059 } 1060 1061 instance->shmem = (u_char *) mmap(0, shmem_length, 1062 PROT_READ | PROT_WRITE, 1063 #ifdef MAP_HASSEMAPHORE 1064 MAP_HASSEMAPHORE | 1065 #endif 1066 MAP_SHARED, instance->shmemfd, (off_t)0); 1067 1068 if (instance->shmem == (u_char *)MAP_FAILED) { 1069 instance->shmem = 0; 1070 close(instance->shmemfd); 1071 return; 1072 } 1073 1074 oncore_log_f(instance, LOG_NOTICE, 1075 "SHMEM (size = %ld) is CONFIGURED and available as %s", 1076 (u_long) shmem_length, instance->shmem_fname); 1077 } 1078 #endif /* ONCORE_SHMEM_STATUS */ 1079 1080 1081 1082 /* 1083 * Read Input file if it exists. 1084 */ 1085 1086 static void 1087 oncore_read_config( 1088 struct instance *instance 1089 ) 1090 { 1091 /* 1092 * First we try to open the configuration file 1093 * /etc/ntp.oncore.N 1094 * where N is the unit number viz 127.127.30.N. 1095 * If we don't find it we try 1096 * /etc/ntp.oncoreN 1097 * and then 1098 * /etc/ntp.oncore 1099 * 1100 * If we don't find any then we don't have the cable delay or PPS offset 1101 * and we choose MODE (4) below. 1102 * 1103 * Five Choices for MODE 1104 * (0) ONCORE is preinitialized, don't do anything to change it. 1105 * nb, DON'T set 0D mode, DON'T set Delay, position... 1106 * (1) NO RESET, Read Position, delays from data file, lock it in, go to 0D mode. 1107 * (2) NO RESET, Read Delays from data file, do SITE SURVEY to get position, 1108 * lock this in, go to 0D mode. 1109 * (3) HARD RESET, Read Position, delays from data file, lock it in, go to 0D mode. 1110 * (4) HARD RESET, Read Delays from data file, do SITE SURVEY to get position, 1111 * lock this in, go to 0D mode. 1112 * NB. If a POSITION is specified in the config file with mode=(2,4) [SITE SURVEY] 1113 * then this position is set as the INITIAL position of the ONCORE. 1114 * This can reduce the time to first fix. 1115 * ------------------------------------------------------------------------------- 1116 * Note that an Oncore UT without a battery backup retains NO information if it is 1117 * power cycled, with a Battery Backup it remembers the almanac, etc. 1118 * For an Oncore VP, there is an eeprom that will contain this data, along with the 1119 * option of Battery Backup. 1120 * So a UT without Battery Backup is equivalent to doing a HARD RESET on each 1121 * power cycle, since there is nowhere to store the data. 1122 * ------------------------------------------------------------------------------- 1123 * 1124 * If we open one or the other of the files, we read it looking for 1125 * MODE, LAT, LON, (HT, HTGPS, HTMSL), DELAY, OFFSET, ASSERT, CLEAR, HARDPPS, 1126 * STATUS, POSN3D, POSN2D, CHAN, TRAIM 1127 * then initialize using method MODE. For Mode = (1,3) all of (LAT, LON, HT) must 1128 * be present or mode reverts to (2,4). 1129 * 1130 * Read input file. 1131 * 1132 * # is comment to end of line 1133 * = allowed between 1st and 2nd fields. 1134 * 1135 * Expect to see one line with 'MODE' as first field, followed by an integer 1136 * in the range 0-4 (default = 4). 1137 * 1138 * Expect to see two lines with 'LONG', 'LAT' followed by 1-3 fields. 1139 * All numbers are floating point. 1140 * DDD.ddd 1141 * DDD MMM.mmm 1142 * DDD MMM SSS.sss 1143 * 1144 * Expect to see one line with 'HT' as first field, 1145 * followed by 1-2 fields. First is a number, the second is 'FT' or 'M' 1146 * for feet or meters. HT is the height above the GPS ellipsoid. 1147 * If the receiver reports height in both GPS and MSL, then we will report 1148 * the difference GPS-MSL on the clockstats file. 1149 * 1150 * There is an optional line, starting with DELAY, followed 1151 * by 1 or two fields. The first is a number (a time) the second is 1152 * 'MS', 'US' or 'NS' for miliseconds, microseconds or nanoseconds. 1153 * DELAY is cable delay, typically a few tens of ns. 1154 * 1155 * There is an optional line, starting with OFFSET, followed 1156 * by 1 or two fields. The first is a number (a time) the second is 1157 * 'MS', 'US' or 'NS' for miliseconds, microseconds or nanoseconds. 1158 * OFFSET is the offset of the PPS pulse from 0. (only fully implemented 1159 * with the PPSAPI, we need to be able to tell the Kernel about this 1160 * offset if the Kernel PLL is in use, but can only do this presently 1161 * when using the PPSAPI interface. If not using the Kernel PLL, 1162 * then there is no problem. 1163 * 1164 * There is an optional line, with either ASSERT or CLEAR on it, which 1165 * determine which transition of the PPS signal is used for timing by the 1166 * PPSAPI. If neither is present, then ASSERT is assumed. 1167 * ASSERT/CLEAR can also be set with FLAG2 of the ntp.conf input. 1168 * For Flag2, ASSERT=0, and hence is default. 1169 * 1170 * There is an optional line, with HARDPPS on it. Including this line causes 1171 * the PPS signal to control the kernel PLL. 1172 * HARDPPS can also be set with FLAG3 of the ntp.conf input. 1173 * For Flag3, 0 is disabled, and the default. 1174 * 1175 * There are three options that have to do with using the shared memory option. 1176 * First, to enable the option there must be a SHMEM line with a file name. 1177 * The file name is the file associated with the shared memory. 1178 * 1179 * In shared memory, there is one 'record' for each returned variable. 1180 * For the @@Ea data there are three 'records' containing position data. 1181 * There will always be data in the record corresponding to the '0D' @@Ea record, 1182 * and the user has a choice of filling the '3D' record by specifying POSN3D, 1183 * or the '2D' record by specifying POSN2D. In either case the '2D' or '3D' 1184 * record is filled once every 15s. 1185 * 1186 * Two additional variables that can be set are CHAN and TRAIM. These should be 1187 * set correctly by the code examining the @@Cj record, but we bring them out here 1188 * to allow the user to override either the # of channels, or the existence of TRAIM. 1189 * CHAN expects to be followed by in integer: 6, 8, or 12. TRAIM expects to be 1190 * followed by YES or NO. 1191 * 1192 * There is an optional line with MASK on it followed by one integer field in the 1193 * range 0 to 89. This sets the satellite mask angle and will determine the minimum 1194 * elevation angle for satellites to be tracked by the receiver. The default value 1195 * is 10 deg for the VP and 0 deg for all other receivers. 1196 * 1197 * There is an optional line with PPSCONTROL on it (only valid for M12 or M12+T 1198 * receivers, the option is read, but ignored for all others) 1199 * and it is followed by: 1200 * ON Turn PPS on. This is the default and the default for other 1201 * oncore receivers. The PPS is on even if not tracking 1202 * any satellites. 1203 * SATELLITE Turns PPS on if tracking at least 1 satellite, else off. 1204 * TRAIM Turns PPS on or off controlled by TRAIM. 1205 * The OFF option is NOT implemented, since the Oncore driver will not work 1206 * without the PPS signal. 1207 * 1208 * So acceptable input would be 1209 * # these are my coordinates (RWC) 1210 * LON -106 34.610 1211 * LAT 35 08.999 1212 * HT 1589 # could equally well say HT 5215 FT 1213 * DELAY 60 ns 1214 */ 1215 1216 FILE *fd; 1217 char *cc, *ca, line[100], units[2], device[64]; 1218 const char *dirs[] = { "/etc/ntp", "/etc", 0 }; 1219 const char *cp, **cpp; 1220 int i, sign, lat_flg, long_flg, ht_flg, mode, mask; 1221 double f1, f2, f3; 1222 1223 fd = NULL; /* just to shutup gcc complaint */ 1224 for (cpp=dirs; *cpp; cpp++) { 1225 cp = *cpp; 1226 snprintf(device, sizeof(device), "%s/ntp.oncore.%d", 1227 cp, instance->unit); /* try "ntp.oncore.0 */ 1228 if ((fd=fopen(device, "r"))) 1229 break; 1230 snprintf(device, sizeof(device), "%s/ntp.oncore%d", 1231 cp, instance->unit); /* try "ntp.oncore0" */ 1232 if ((fd=fopen(device, "r"))) 1233 break; 1234 snprintf(device, sizeof(device), "%s/ntp.oncore", cp); 1235 if ((fd=fopen(device, "r"))) /* last try "ntp.oncore" */ 1236 break; 1237 } 1238 1239 if (!fd) { /* no inputfile, default to the works ... */ 1240 instance->init_type = 4; 1241 return; 1242 } 1243 1244 mode = mask = 0; 1245 lat_flg = long_flg = ht_flg = 0; 1246 while (fgets(line, 100, fd)) { 1247 char *cpw; 1248 1249 /* Remove comments */ 1250 if ((cpw = strchr(line, '#'))) 1251 *cpw = '\0'; 1252 1253 /* Remove trailing space */ 1254 for (i = strlen(line); 1255 i > 0 && isascii((unsigned char)line[i - 1]) && isspace((unsigned char)line[i - 1]); 1256 ) 1257 line[--i] = '\0'; 1258 1259 /* Remove leading space */ 1260 for (cc = line; *cc && isascii((unsigned char)*cc) && isspace((unsigned char)*cc); cc++) 1261 continue; 1262 1263 /* Stop if nothing left */ 1264 if (!*cc) 1265 continue; 1266 1267 /* Uppercase the command and find the arg */ 1268 for (ca = cc; *ca; ca++) { 1269 if (isascii((unsigned char)*ca)) { 1270 if (islower((unsigned char)*ca)) { 1271 *ca = toupper((unsigned char)*ca); 1272 } else if (isspace((unsigned char)*ca) || (*ca == '=')) 1273 break; 1274 } 1275 } 1276 1277 /* Remove space (and possible =) leading the arg */ 1278 for (; *ca && isascii((unsigned char)*ca) && (isspace((unsigned char)*ca) || (*ca == '=')); ca++) 1279 continue; 1280 1281 if (!strncmp(cc, "STATUS", (size_t) 6) || !strncmp(cc, "SHMEM", (size_t) 5)) { 1282 instance->shmem_fname = estrdup(ca); 1283 continue; 1284 } 1285 1286 /* Uppercase argument as well */ 1287 for (cpw = ca; *cpw; cpw++) 1288 if (isascii((unsigned char)*cpw) && islower((unsigned char)*cpw)) 1289 *cpw = toupper((unsigned char)*cpw); 1290 1291 if (!strncmp(cc, "LAT", (size_t) 3)) { 1292 f1 = f2 = f3 = 0; 1293 sscanf(ca, "%lf %lf %lf", &f1, &f2, &f3); 1294 sign = 1; 1295 if (f1 < 0) { 1296 f1 = -f1; 1297 sign = -1; 1298 } 1299 instance->ss_lat = sign*1000*(fabs(f3) + 60*(fabs(f2) + 60*f1)); /*miliseconds*/ 1300 lat_flg++; 1301 } else if (!strncmp(cc, "LON", (size_t) 3)) { 1302 f1 = f2 = f3 = 0; 1303 sscanf(ca, "%lf %lf %lf", &f1, &f2, &f3); 1304 sign = 1; 1305 if (f1 < 0) { 1306 f1 = -f1; 1307 sign = -1; 1308 } 1309 instance->ss_long = sign*1000*(fabs(f3) + 60*(fabs(f2) + 60*f1)); /*miliseconds*/ 1310 long_flg++; 1311 } else if (!strncmp(cc, "HT", (size_t) 2)) { 1312 f1 = 0; 1313 units[0] = '\0'; 1314 sscanf(ca, "%lf %1s", &f1, units); 1315 if (units[0] == 'F') 1316 f1 = 0.3048 * f1; 1317 instance->ss_ht = 100 * f1; /* cm */ 1318 ht_flg++; 1319 } else if (!strncmp(cc, "DELAY", (size_t) 5)) { 1320 f1 = 0; 1321 units[0] = '\0'; 1322 sscanf(ca, "%lf %1s", &f1, units); 1323 if (units[0] == 'N') 1324 ; 1325 else if (units[0] == 'U') 1326 f1 = 1000 * f1; 1327 else if (units[0] == 'M') 1328 f1 = 1000000 * f1; 1329 else 1330 f1 = 1000000000 * f1; 1331 if (f1 < 0 || f1 > 1.e9) 1332 f1 = 0; 1333 if (f1 < 0 || f1 > 999999) 1334 oncore_log_f(instance, LOG_WARNING, 1335 "PPS Cable delay of %fns out of Range, ignored", 1336 f1); 1337 else 1338 instance->delay = f1; /* delay in ns */ 1339 } else if (!strncmp(cc, "OFFSET", (size_t) 6)) { 1340 f1 = 0; 1341 units[0] = '\0'; 1342 sscanf(ca, "%lf %1s", &f1, units); 1343 if (units[0] == 'N') 1344 ; 1345 else if (units[0] == 'U') 1346 f1 = 1000 * f1; 1347 else if (units[0] == 'M') 1348 f1 = 1000000 * f1; 1349 else 1350 f1 = 1000000000 * f1; 1351 if (f1 < 0 || f1 > 1.e9) 1352 f1 = 0; 1353 if (f1 < 0 || f1 > 999999999.) 1354 oncore_log_f(instance, LOG_WARNING, 1355 "PPS Offset of %fns out of Range, ignored", 1356 f1); 1357 else 1358 instance->offset = f1; /* offset in ns */ 1359 } else if (!strncmp(cc, "MODE", (size_t) 4)) { 1360 sscanf(ca, "%d", &mode); 1361 if (mode < 0 || mode > 4) 1362 mode = 4; 1363 } else if (!strncmp(cc, "ASSERT", (size_t) 6)) { 1364 instance->assert = 1; 1365 } else if (!strncmp(cc, "CLEAR", (size_t) 5)) { 1366 instance->assert = 0; 1367 } else if (!strncmp(cc, "HARDPPS", (size_t) 7)) { 1368 instance->hardpps = 1; 1369 } else if (!strncmp(cc, "POSN2D", (size_t) 6)) { 1370 instance->shmem_Posn = 2; 1371 } else if (!strncmp(cc, "POSN3D", (size_t) 6)) { 1372 instance->shmem_Posn = 3; 1373 } else if (!strncmp(cc, "CHAN", (size_t) 4)) { 1374 sscanf(ca, "%d", &i); 1375 if ((i == 6) || (i == 8) || (i == 12)) 1376 instance->chan_in = i; 1377 } else if (!strncmp(cc, "TRAIM", (size_t) 5)) { 1378 instance->traim_in = 1; /* so TRAIM alone is YES */ 1379 if (!strcmp(ca, "NO") || !strcmp(ca, "OFF")) /* Yes/No, On/Off */ 1380 instance->traim_in = 0; 1381 } else if (!strncmp(cc, "MASK", (size_t) 4)) { 1382 sscanf(ca, "%d", &mask); 1383 if (mask > -1 && mask < 90) 1384 instance->Ag = mask; /* Satellite mask angle */ 1385 } else if (!strncmp(cc,"PPSCONTROL",10)) { /* pps control M12 only */ 1386 if (!strcmp(ca,"ON") || !strcmp(ca, "CONTINUOUS")) { 1387 instance->pps_control = 1; /* PPS always on */ 1388 } else if (!strcmp(ca,"SATELLITE")) { 1389 instance->pps_control = 2; /* PPS on when satellite is available */ 1390 } else if (!strcmp(ca,"TRAIM")) { 1391 instance->pps_control = 3; /* PPS on when TRAIM status is OK */ 1392 } else { 1393 oncore_log_f(instance, LOG_WARNING, 1394 "Unknown value \"%s\" for PPSCONTROL, ignored", 1395 cc); 1396 } 1397 } 1398 } 1399 fclose(fd); 1400 1401 /* 1402 * OK, have read all of data file, and extracted the good stuff. 1403 * If lat/long/ht specified they ALL must be specified for mode = (1,3). 1404 */ 1405 1406 instance->posn_set = 1; 1407 if (!( lat_flg && long_flg && ht_flg )) { 1408 oncore_log_f(instance, LOG_WARNING, 1409 "ONCORE: incomplete data on %s", device); 1410 instance->posn_set = 0; 1411 if (mode == 1 || mode == 3) { 1412 oncore_log_f(instance, LOG_WARNING, 1413 "Input Mode = %d, but no/incomplete position, mode set to %d", 1414 mode, mode+1); 1415 mode++; 1416 } 1417 } 1418 instance->init_type = mode; 1419 1420 oncore_log_f(instance, LOG_INFO, "Input mode = %d", mode); 1421 } 1422 1423 1424 1425 /* 1426 * move data from NTP to buffer (toss the extra in the unlikely case it won't fit) 1427 */ 1428 1429 static void 1430 oncore_receive( 1431 struct recvbuf *rbufp 1432 ) 1433 { 1434 size_t i; 1435 u_char *p; 1436 struct peer *peer; 1437 struct instance *instance; 1438 1439 peer = rbufp->recv_peer; 1440 instance = peer->procptr->unitptr; 1441 p = (u_char *) &rbufp->recv_space; 1442 1443 #ifdef ONCORE_VERBOSE_RECEIVE 1444 if (debug > 4) { 1445 int i; 1446 char Msg[120], Msg2[10]; 1447 1448 oncore_log_f(instance, LOG_DEBUG, 1449 ">>> %d bytes available", 1450 rbufp->recv_length); 1451 strlcpy(Msg, ">>>", sizeof(Msg)); 1452 for (i = 0; i < rbufp->recv_length; i++) { 1453 snprintf(Msg2, sizeof(Msg2), "%02x ", p[i]); 1454 strlcat(Msg, Msg2, sizeof(Msg)); 1455 } 1456 oncore_log(instance, LOG_DEBUG, Msg); 1457 1458 strlcpy(Msg, ">>>", sizeof(Msg)); 1459 for (i = 0; i < rbufp->recv_length; i++) { 1460 snprintf(Msg2, sizeof(Msg2), "%03o ", p[i]); 1461 strlcat(Msg, Msg2, sizeof(Msg)); 1462 } 1463 oncore_log(instance, LOG_DEBUG, Msg); 1464 } 1465 #endif 1466 1467 i = rbufp->recv_length; 1468 if ((size_t)rcvptr + i >= sizeof(rcvbuf)) 1469 i = sizeof(rcvbuf) - rcvptr; /* and some char will be lost */ 1470 memcpy(rcvbuf+rcvptr, p, i); 1471 rcvptr += i; 1472 oncore_consume(instance); 1473 } 1474 1475 1476 1477 /* 1478 * Deal with any complete messages 1479 */ 1480 1481 static void 1482 oncore_consume( 1483 struct instance *instance 1484 ) 1485 { 1486 unsigned i, m, l; 1487 1488 while (rcvptr >= 7) { 1489 if (rcvbuf[0] != '@' || rcvbuf[1] != '@') { 1490 /* We're not in sync, lets try to get there */ 1491 for (i=1; i < rcvptr-1; i++) 1492 if (rcvbuf[i] == '@' && rcvbuf[i+1] == '@') 1493 break; 1494 #ifdef ONCORE_VERBOSE_CONSUME 1495 if (debug > 4) 1496 oncore_log_f(instance, LOG_DEBUG, 1497 ">>> skipping %d chars", 1498 i); 1499 #endif 1500 if (i != rcvptr) 1501 memcpy(rcvbuf, rcvbuf+i, (size_t)(rcvptr-i)); 1502 rcvptr -= i; 1503 continue; 1504 } 1505 1506 /* Ok, we have a header now */ 1507 l = sizeof(oncore_messages)/sizeof(oncore_messages[0]) -1; 1508 for(m=0; m<l; m++) 1509 if (!strncmp(oncore_messages[m].flag, (char *)(rcvbuf+2), (size_t) 2)) 1510 break; 1511 if (m == l) { 1512 #ifdef ONCORE_VERBOSE_CONSUME 1513 if (debug > 4) 1514 oncore_log_f(instance, LOG_DEBUG, 1515 ">>> Unknown MSG, skipping 4 (%c%c)", 1516 rcvbuf[2], rcvbuf[3]); 1517 #endif 1518 memcpy(rcvbuf, rcvbuf+4, (size_t) 4); 1519 rcvptr -= 4; 1520 continue; 1521 } 1522 1523 l = oncore_messages[m].len; 1524 #ifdef ONCORE_VERBOSE_CONSUME 1525 if (debug > 3) 1526 oncore_log_f(instance, LOG_DEBUG, 1527 "GOT: %c%c %d of %d entry %d", 1528 instance->unit, rcvbuf[2], 1529 rcvbuf[3], rcvptr, l, m); 1530 #endif 1531 /* Got the entire message ? */ 1532 1533 if (rcvptr < l) 1534 return; 1535 1536 /* are we at the end of message? should be <Cksum><CR><LF> */ 1537 1538 if (rcvbuf[l-2] != '\r' || rcvbuf[l-1] != '\n') { 1539 #ifdef ONCORE_VERBOSE_CONSUME 1540 if (debug) 1541 oncore_log(instance, LOG_DEBUG, "NO <CR><LF> at end of message"); 1542 #endif 1543 } else { /* check the CheckSum */ 1544 if (oncore_checksum_ok(rcvbuf, l)) { 1545 if (instance->shmem != NULL) { 1546 instance->shmem[oncore_messages[m].shmem + 2]++; 1547 memcpy(instance->shmem + oncore_messages[m].shmem + 3, 1548 rcvbuf, (size_t) l); 1549 } 1550 oncore_msg_any(instance, rcvbuf, (size_t) (l-3), m); 1551 if (oncore_messages[m].handler) 1552 oncore_messages[m].handler(instance, rcvbuf, (size_t) (l-3)); 1553 } 1554 #ifdef ONCORE_VERBOSE_CONSUME 1555 else if (debug) { 1556 char Msg[120], Msg2[10]; 1557 1558 oncore_log(instance, LOG_ERR, "Checksum mismatch!"); 1559 snprintf(Msg, sizeof(Msg), "@@%c%c ", rcvbuf[2], rcvbuf[3]); 1560 for (i = 4; i < l; i++) { 1561 snprintf(Msg2, sizeof(Msg2), 1562 "%03o ", rcvbuf[i]); 1563 strlcat(Msg, Msg2, sizeof(Msg)); 1564 } 1565 oncore_log(instance, LOG_DEBUG, Msg); 1566 } 1567 #endif 1568 } 1569 1570 if (l != rcvptr) 1571 memcpy(rcvbuf, rcvbuf+l, (size_t) (rcvptr-l)); 1572 rcvptr -= l; 1573 } 1574 } 1575 1576 1577 1578 static void 1579 oncore_get_timestamp( 1580 struct instance *instance, 1581 long dt1, /* tick offset THIS time step */ 1582 long dt2 /* tick offset NEXT time step */ 1583 ) 1584 { 1585 int Rsm; 1586 u_long j; 1587 l_fp ts, ts_tmp; 1588 double dmy; 1589 #ifdef HAVE_STRUCT_TIMESPEC 1590 struct timespec *tsp = 0; 1591 #else 1592 struct timeval *tsp = 0; 1593 #endif 1594 int current_mode; 1595 pps_params_t current_params; 1596 struct timespec timeout; 1597 struct peer *peer; 1598 pps_info_t pps_i; 1599 char Msg[160]; 1600 1601 peer = instance->peer; 1602 1603 #if 1 1604 /* If we are in SiteSurvey mode, then we are in 3D mode, and we fall thru. 1605 * If we have Finished the SiteSurvey, then we fall thru for the 14/15 1606 * times we get here in 0D mode (the 1/15 is in 3D for SHMEM). 1607 * This gives good time, which gets better when the SS is done. 1608 */ 1609 1610 if ((instance->site_survey == ONCORE_SS_DONE) && (instance->mode != MODE_0D)) { 1611 #else 1612 /* old check, only fall thru for SS_DONE and 0D mode, 2h45m wait for ticks */ 1613 1614 if ((instance->site_survey != ONCORE_SS_DONE) || (instance->mode != MODE_0D)) { 1615 #endif 1616 peer->flags &= ~FLAG_PPS; /* problem - clear PPS FLAG */ 1617 return; 1618 } 1619 1620 /* Don't do anything without an almanac to define the GPS->UTC delta */ 1621 1622 if (instance->rsm.bad_almanac) { 1623 peer->flags &= ~FLAG_PPS; /* problem - clear PPS FLAG */ 1624 return; 1625 } 1626 1627 /* Once the Almanac is valid, the M12+T does not produce valid UTC 1628 * immediately. 1629 * Wait for UTC offset decode valid, then wait one message more 1630 * so we are not off by 13 seconds after reset. 1631 */ 1632 1633 if (instance->count5) { 1634 instance->count5--; 1635 peer->flags &= ~FLAG_PPS; /* problem - clear PPS FLAG */ 1636 return; 1637 } 1638 1639 j = instance->ev_serial; 1640 timeout.tv_sec = 0; 1641 timeout.tv_nsec = 0; 1642 if (time_pps_fetch(instance->pps_h, PPS_TSFMT_TSPEC, &pps_i, 1643 &timeout) < 0) { 1644 oncore_log_f(instance, LOG_ERR, 1645 "time_pps_fetch failed %m"); 1646 peer->flags &= ~FLAG_PPS; /* problem - clear PPS FLAG */ 1647 return; 1648 } 1649 1650 if (instance->assert) { 1651 tsp = &pps_i.assert_timestamp; 1652 1653 #ifdef ONCORE_VERBOSE_GET_TIMESTAMP 1654 if (debug > 2) { 1655 u_long i; 1656 1657 i = (u_long) pps_i.assert_sequence; 1658 # ifdef HAVE_STRUCT_TIMESPEC 1659 oncore_log_f(instance, LOG_DEBUG, 1660 "serial/j (%lu, %lu) %ld.%09ld", i, 1661 j, (long)tsp->tv_sec, 1662 (long)tsp->tv_nsec); 1663 # else 1664 oncore_log_f(instance, LOG_DEBUG, 1665 "serial/j (%lu, %lu) %ld.%06ld", i, 1666 j, (long)tsp->tv_sec, 1667 (long)tsp->tv_usec); 1668 # endif 1669 } 1670 #endif 1671 1672 if (pps_i.assert_sequence == j) { 1673 oncore_log(instance, LOG_NOTICE, "ONCORE: oncore_get_timestamp, error serial pps"); 1674 peer->flags &= ~FLAG_PPS; /* problem - clear PPS FLAG */ 1675 return; 1676 } 1677 1678 instance->ev_serial = pps_i.assert_sequence; 1679 } else { 1680 tsp = &pps_i.clear_timestamp; 1681 1682 #if 0 1683 if (debug > 2) { 1684 u_long i; 1685 1686 i = (u_long) pps_i.clear_sequence; 1687 # ifdef HAVE_STRUCT_TIMESPEC 1688 oncore_log_f(instance, LOG_DEBUG, 1689 "serial/j (%lu, %lu) %ld.%09ld", i, 1690 j, (long)tsp->tv_sec, 1691 (long)tsp->tv_nsec); 1692 # else 1693 oncore_log_f(instance, LOG_DEBUG, 1694 "serial/j (%lu, %lu) %ld.%06ld", i, 1695 j, (long)tsp->tv_sec, 1696 (long)tsp->tv_usec); 1697 # endif 1698 } 1699 #endif 1700 1701 if (pps_i.clear_sequence == j) { 1702 oncore_log(instance, LOG_ERR, "oncore_get_timestamp, error serial pps"); 1703 peer->flags &= ~FLAG_PPS; /* problem - clear PPS FLAG */ 1704 return; 1705 } 1706 instance->ev_serial = pps_i.clear_sequence; 1707 } 1708 1709 /* convert timespec -> ntp l_fp */ 1710 1711 dmy = tsp->tv_nsec; 1712 dmy /= 1e9; 1713 ts.l_uf = dmy * 4294967296.0; 1714 ts.l_ui = tsp->tv_sec; 1715 1716 #if 0 1717 alternate code for previous 4 lines is 1718 dmy = 1.0e-9*tsp->tv_nsec; /* fractional part */ 1719 DTOLFP(dmy, &ts); 1720 dmy = tsp->tv_sec; /* integer part */ 1721 DTOLFP(dmy, &ts_tmp); 1722 L_ADD(&ts, &ts_tmp); 1723 or more simply 1724 dmy = 1.0e-9*tsp->tv_nsec; /* fractional part */ 1725 DTOLFP(dmy, &ts); 1726 ts.l_ui = tsp->tv_sec; 1727 #endif /* 0 */ 1728 1729 /* now have timestamp in ts */ 1730 /* add in saw_tooth and offset, these will be ZERO if no TRAIM */ 1731 /* they will be IGNORED if the PPSAPI cant do PPS_OFFSET/ASSERT/CLEAR */ 1732 /* we just try to add them in and dont test for that here */ 1733 1734 /* saw_tooth not really necessary if using TIMEVAL */ 1735 /* since its only precise to us, but do it anyway. */ 1736 1737 /* offset in ns, and is positive (late), we subtract */ 1738 /* to put the PPS time transition back where it belongs */ 1739 1740 /* must hand the offset for the NEXT sec off to the Kernel to do */ 1741 /* the addition, so that the Kernel PLL sees the offset too */ 1742 1743 if (instance->assert) 1744 instance->pps_p.assert_offset.tv_nsec = -dt2; 1745 else 1746 instance->pps_p.clear_offset.tv_nsec = -dt2; 1747 1748 /* The following code is necessary, and not just a time_pps_setparams, 1749 * using the saved instance->pps_p, since some other process on the 1750 * machine may have diddled with the mode bits (say adding something 1751 * that it needs). We take what is there and ADD what we need. 1752 * [[ The results from the time_pps_getcap is unlikely to change so 1753 * we could probably just save it, but I choose to do the call ]] 1754 * Unfortunately, there is only ONE set of mode bits in the kernel per 1755 * interface, and not one set for each open handle. 1756 * 1757 * There is still a race condition here where we might mess up someone 1758 * elses mode, but if he is being careful too, he should survive. 1759 */ 1760 1761 if (time_pps_getcap(instance->pps_h, ¤t_mode) < 0) { 1762 oncore_log_f(instance, LOG_ERR, 1763 "time_pps_getcap failed: %m"); 1764 peer->flags &= ~FLAG_PPS; /* problem - clear PPS FLAG */ 1765 return; 1766 } 1767 1768 if (time_pps_getparams(instance->pps_h, ¤t_params) < 0) { 1769 oncore_log_f(instance, LOG_ERR, 1770 "time_pps_getparams failed: %m"); 1771 peer->flags &= ~FLAG_PPS; /* problem - clear PPS FLAG */ 1772 return; 1773 } 1774 1775 /* or current and mine */ 1776 current_params.mode |= instance->pps_p.mode; 1777 /* but only set whats legal */ 1778 current_params.mode &= current_mode; 1779 1780 current_params.assert_offset.tv_sec = 0; 1781 current_params.assert_offset.tv_nsec = -dt2; 1782 current_params.clear_offset.tv_sec = 0; 1783 current_params.clear_offset.tv_nsec = -dt2; 1784 1785 if (time_pps_setparams(instance->pps_h, ¤t_params)) 1786 oncore_log(instance, LOG_ERR, "ONCORE: Error doing time_pps_setparams"); 1787 1788 /* have time from UNIX origin, convert to NTP origin. */ 1789 1790 ts.l_ui += JAN_1970; 1791 instance->pp->lastrec = ts; 1792 1793 /* print out information about this timestamp (long line) */ 1794 1795 ts_tmp = ts; 1796 ts_tmp.l_ui = 0; /* zero integer part */ 1797 LFPTOD(&ts_tmp, dmy); /* convert fractional part to a double */ 1798 j = 1.0e9*dmy; /* then to integer ns */ 1799 1800 Rsm = 0; 1801 if (instance->chan == 6) 1802 Rsm = instance->BEHa[64]; 1803 else if (instance->chan == 8) 1804 Rsm = instance->BEHa[72]; 1805 else if (instance->chan == 12) 1806 Rsm = ((instance->BEHa[129]<<8) | instance->BEHa[130]); 1807 1808 if (instance->chan == 6 || instance->chan == 8) { 1809 char f1[5], f2[5], f3[5], f4[5]; 1810 if (instance->traim) { 1811 snprintf(f1, sizeof(f1), "%d", 1812 instance->BEHn[21]); 1813 snprintf(f2, sizeof(f2), "%d", 1814 instance->BEHn[22]); 1815 snprintf(f3, sizeof(f3), "%2d", 1816 instance->BEHn[23] * 256 + 1817 instance->BEHn[24]); 1818 snprintf(f4, sizeof(f4), "%3d", 1819 (s_char)instance->BEHn[25]); 1820 } else { 1821 strlcpy(f1, "x", sizeof(f1)); 1822 strlcpy(f2, "x", sizeof(f2)); 1823 strlcpy(f3, "xx", sizeof(f3)); 1824 strlcpy(f4, "xxx", sizeof(f4)); 1825 } 1826 snprintf(Msg, sizeof(Msg), /* MAX length 128, currently at 127 */ 1827 "%u.%09lu %d %d %2d %2d %2d %2ld rstat %02x dop %4.1f nsat %2d,%d traim %d,%s,%s sigma %s neg-sawtooth %s sat %d%d%d%d%d%d%d%d", 1828 ts.l_ui, j, 1829 instance->pp->year, instance->pp->day, 1830 instance->pp->hour, instance->pp->minute, instance->pp->second, 1831 (long) tsp->tv_sec % 60, 1832 Rsm, 0.1*(256*instance->BEHa[35]+instance->BEHa[36]), 1833 /*rsat dop */ 1834 instance->BEHa[38], instance->BEHa[39], instance->traim, f1, f2, 1835 /* nsat visible, nsat tracked, traim,traim,traim */ 1836 f3, f4, 1837 /* sigma neg-sawtooth */ 1838 /*sat*/ instance->BEHa[41], instance->BEHa[45], instance->BEHa[49], instance->BEHa[53], 1839 instance->BEHa[57], instance->BEHa[61], instance->BEHa[65], instance->BEHa[69] 1840 ); /* will be 0 for 6 chan */ 1841 } else if (instance->chan == 12) { 1842 char f1[5], f2[5], f3[5], f4[5]; 1843 if (instance->traim) { 1844 snprintf(f1, sizeof(f1), "%d", 1845 instance->BEHn[6]); 1846 snprintf(f2, sizeof(f2), "%d", 1847 instance->BEHn[7]); 1848 snprintf(f3, sizeof(f3), "%d", 1849 instance->BEHn[12] * 256 + 1850 instance->BEHn[13]); 1851 snprintf(f4, sizeof(f4), "%3d", 1852 (s_char)instance->BEHn[14]); 1853 } else { 1854 strlcpy(f1, "x", sizeof(f1)); 1855 strlcpy(f2, "x", sizeof(f2)); 1856 strlcpy(f3, "xx", sizeof(f3)); 1857 strlcpy(f4, "xxx", sizeof(f4)); 1858 } 1859 snprintf(Msg, sizeof(Msg), 1860 "%u.%09lu %d %d %2d %2d %2d %2ld rstat %02x dop %4.1f nsat %2d,%d traim %d,%s,%s sigma %s neg-sawtooth %s sat %d%d%d%d%d%d%d%d%d%d%d%d", 1861 ts.l_ui, j, 1862 instance->pp->year, instance->pp->day, 1863 instance->pp->hour, instance->pp->minute, instance->pp->second, 1864 (long) tsp->tv_sec % 60, 1865 Rsm, 0.1*(256*instance->BEHa[53]+instance->BEHa[54]), 1866 /*rsat dop */ 1867 instance->BEHa[55], instance->BEHa[56], instance->traim, f1, f2, 1868 /* nsat visible, nsat tracked traim,traim,traim */ 1869 f3, f4, 1870 /* sigma neg-sawtooth */ 1871 /*sat*/ instance->BEHa[58], instance->BEHa[64], instance->BEHa[70], instance->BEHa[76], 1872 instance->BEHa[82], instance->BEHa[88], instance->BEHa[94], instance->BEHa[100], 1873 instance->BEHa[106], instance->BEHa[112], instance->BEHa[118], instance->BEHa[124] 1874 ); 1875 } 1876 1877 /* and some things I dont understand (magic ntp things) */ 1878 1879 #if 1 1880 oncore_feed_clockproc(instance); 1881 #else 1882 if (!refclock_process(instance->pp)) { 1883 refclock_report(peer, CEVNT_BADTIME); 1884 peer->flags &= ~FLAG_PPS; /* problem - clear PPS FLAG */ 1885 return; 1886 } 1887 #endif 1888 1889 oncore_log(instance, LOG_INFO, Msg); /* this is long message above */ 1890 instance->pollcnt = 2; 1891 1892 if (instance->polled) { 1893 instance->polled = 0; 1894 /* instance->pp->dispersion = instance->pp->skew = 0; */ 1895 instance->pp->lastref = instance->pp->lastrec; 1896 refclock_receive(instance->peer); 1897 } 1898 peer->flags |= FLAG_PPS; 1899 } 1900 1901 1902 /*************** oncore_msg_XX routines start here *******************/ 1903 1904 1905 /* 1906 * print Oncore response message. 1907 */ 1908 1909 static void 1910 oncore_msg_any( 1911 struct instance *instance, 1912 u_char *buf, 1913 size_t len, 1914 int idx 1915 ) 1916 { 1917 #ifdef ONCORE_VERBOSE_MSG_ANY 1918 int i; 1919 const char *fmt = oncore_messages[idx].fmt; 1920 const char *p; 1921 char *q; 1922 char *qlim; 1923 #ifdef HAVE_GETCLOCK 1924 struct timespec ts; 1925 #endif 1926 struct timeval tv; 1927 char Msg[120], Msg2[10]; 1928 1929 if (debug > 3) { 1930 # ifdef HAVE_GETCLOCK 1931 (void) getclock(TIMEOFDAY, &ts); 1932 tv.tv_sec = ts.tv_sec; 1933 tv.tv_usec = ts.tv_nsec / 1000; 1934 # else 1935 GETTIMEOFDAY(&tv, 0); 1936 # endif 1937 oncore_log(instance, LOG_DEBUG, "%ld.%06ld", 1938 (long)tv.tv_sec, (long)tv.tv_usec); 1939 1940 if (!*fmt) { 1941 snprintf(Msg, sizeof(Msg), ">>@@%c%c ", buf[2], 1942 buf[3]); 1943 for(i = 2; i < len && i < 2400 ; i++) { 1944 snprintf(Msg2, sizeof(Msg2), "%02x", 1945 buf[i]); 1946 strlcat(Msg, Msg2, sizeof(Msg)); 1947 } 1948 oncore_log(instance, LOG_DEBUG, Msg); 1949 return; 1950 } else { 1951 strlcpy(Msg, "##", sizeof(Msg)); 1952 qlim = Msg + sizeof(Msg) - 3; 1953 for (p = fmt, q = Msg + 2; q < qlim && *p; ) { 1954 *q++ = *p++; 1955 *q++ = '_'; 1956 } 1957 *q = '\0'; 1958 oncore_log(instance, LOG_DEBUG, Msg); 1959 snprintf(Msg, sizeof(Msg), "%c%c", buf[2], 1960 buf[3]); 1961 i = 4; 1962 for (p = fmt; *p; p++) { 1963 snprintf(Msg2, "%02x", buf[i++]); 1964 strlcat(Msg, Msg2, sizeof(Msg)); 1965 } 1966 oncore_log(instance, LOG_DEBUG, Msg); 1967 } 1968 } 1969 #endif 1970 } 1971 1972 1973 1974 /* Latitude, Longitude, Height */ 1975 1976 static void 1977 oncore_msg_Adef( 1978 struct instance *instance, 1979 u_char *buf, 1980 size_t len 1981 ) 1982 { 1983 } 1984 1985 1986 1987 /* Mask Angle */ 1988 1989 static void 1990 oncore_msg_Ag( 1991 struct instance *instance, 1992 u_char *buf, 1993 size_t len 1994 ) 1995 { 1996 const char *cp; 1997 1998 cp = "set to"; 1999 if (instance->o_state == ONCORE_RUN) 2000 cp = "is"; 2001 2002 instance->Ag = buf[4]; 2003 oncore_log_f(instance, LOG_INFO, 2004 "Satellite mask angle %s %d degrees", cp, 2005 (int)instance->Ag); 2006 } 2007 2008 2009 2010 /* 2011 * get Position hold position 2012 */ 2013 2014 static void 2015 oncore_msg_As( 2016 struct instance *instance, 2017 u_char *buf, 2018 size_t len 2019 ) 2020 { 2021 instance->ss_lat = buf_w32(&buf[4]); 2022 instance->ss_long = buf_w32(&buf[8]); 2023 instance->ss_ht = buf_w32(&buf[12]); 2024 2025 /* Print out Position */ 2026 oncore_print_posn(instance); 2027 } 2028 2029 2030 2031 /* 2032 * Try to use Oncore UT+ Auto Survey Feature 2033 * If its not there (VP), set flag to do it ourselves. 2034 */ 2035 2036 static void 2037 oncore_msg_At( 2038 struct instance *instance, 2039 u_char *buf, 2040 size_t len 2041 ) 2042 { 2043 instance->saw_At = 1; 2044 if (instance->site_survey == ONCORE_SS_TESTING) { 2045 if (buf[4] == 2) { 2046 oncore_log(instance, LOG_NOTICE, 2047 "Initiating hardware 3D site survey"); 2048 2049 oncore_log(instance, LOG_NOTICE, "SSstate = ONCORE_SS_HW"); 2050 instance->site_survey = ONCORE_SS_HW; 2051 } 2052 } 2053 } 2054 2055 2056 2057 /* 2058 * get PPS Offset 2059 * Nb. @@Ay is not supported for early UT (no plus) model 2060 */ 2061 2062 static void 2063 oncore_msg_Ay( 2064 struct instance *instance, 2065 u_char *buf, 2066 size_t len 2067 ) 2068 { 2069 if (instance->saw_Ay) 2070 return; 2071 2072 instance->saw_Ay = 1; 2073 2074 instance->offset = buf_w32(&buf[4]); 2075 2076 oncore_log_f(instance, LOG_INFO, "PPS Offset is set to %ld ns", 2077 instance->offset); 2078 } 2079 2080 2081 2082 /* 2083 * get Cable Delay 2084 */ 2085 2086 static void 2087 oncore_msg_Az( 2088 struct instance *instance, 2089 u_char *buf, 2090 size_t len 2091 ) 2092 { 2093 if (instance->saw_Az) 2094 return; 2095 2096 instance->saw_Az = 1; 2097 2098 instance->delay = buf_w32(&buf[4]); 2099 2100 oncore_log_f(instance, LOG_INFO, "Cable delay is set to %ld ns", 2101 instance->delay); 2102 } 2103 2104 2105 2106 /* Ba, Ea and Ha come here, these contain Position */ 2107 2108 static void 2109 oncore_msg_BaEaHa( 2110 struct instance *instance, 2111 u_char *buf, 2112 size_t len 2113 ) 2114 { 2115 const char *cp; 2116 int mode; 2117 2118 /* OK, we are close to the RUN state now. 2119 * But we have a few more items to initialize first. 2120 * 2121 * At the beginning of this routine there are several 'timers'. 2122 * We enter this routine 1/sec, and since the upper levels of NTP have usurped 2123 * the use of timers, we use the 1/sec entry to do things that 2124 * we would normally do with timers... 2125 */ 2126 2127 if (instance->o_state == ONCORE_CHECK_CHAN) { /* here while checking for the # chan */ 2128 if (buf[2] == 'B') { /* 6chan */ 2129 if (instance->chan_ck < 6) instance->chan_ck = 6; 2130 } else if (buf[2] == 'E') { /* 8chan */ 2131 if (instance->chan_ck < 8) instance->chan_ck = 8; 2132 } else if (buf[2] == 'H') { /* 12chan */ 2133 if (instance->chan_ck < 12) instance->chan_ck = 12; 2134 } 2135 2136 if (instance->count3++ < 5) 2137 return; 2138 2139 instance->count3 = 0; 2140 2141 if (instance->chan_in != -1) /* set in Input */ 2142 instance->chan = instance->chan_in; 2143 else /* set from test */ 2144 instance->chan = instance->chan_ck; 2145 2146 oncore_log_f(instance, LOG_INFO, "Input says chan = %d", 2147 instance->chan_in); 2148 oncore_log_f(instance, LOG_INFO, "Model # says chan = %d", 2149 instance->chan_id); 2150 oncore_log_f(instance, LOG_INFO, "Testing says chan = %d", 2151 instance->chan_ck); 2152 oncore_log_f(instance, LOG_INFO, "Using chan = %d", 2153 instance->chan); 2154 2155 instance->o_state = ONCORE_HAVE_CHAN; 2156 oncore_log(instance, LOG_NOTICE, "state = ONCORE_HAVE_CHAN"); 2157 2158 instance->timeout = 4; 2159 oncore_sendmsg(instance, oncore_cmd_Cj, sizeof(oncore_cmd_Cj)); 2160 return; 2161 } 2162 2163 if (instance->o_state != ONCORE_ALMANAC && instance->o_state != ONCORE_RUN) 2164 return; 2165 2166 /* PAUSE 5sec - make sure results are stable, before using position */ 2167 2168 if (instance->count) { 2169 if (instance->count++ < 5) 2170 return; 2171 instance->count = 0; 2172 } 2173 2174 memcpy(instance->BEHa, buf, (size_t) (len+3)); /* Ba, Ea or Ha */ 2175 2176 /* check if we saw a response to Gc (M12 or M12+T */ 2177 2178 if (instance->pps_control_msg_seen != -2) { 2179 if ((instance->pps_control_msg_seen == -1) && (instance->pps_control != -1)) { 2180 oncore_log(instance, LOG_INFO, "PPSCONTROL set, but not implemented (not M12)"); 2181 } 2182 instance->pps_control_msg_seen = -2; 2183 } 2184 2185 /* check the antenna (did it get unplugged) and almanac (is it ready) for changes. */ 2186 2187 oncore_check_almanac(instance); 2188 oncore_check_antenna(instance); 2189 2190 /* If we are in Almanac mode, waiting for Almanac, we can't do anything till we have it */ 2191 /* When we have an almanac, we will start the Bn/En/@@Hn messages */ 2192 2193 if (instance->o_state == ONCORE_ALMANAC) 2194 if (oncore_wait_almanac(instance)) 2195 return; 2196 2197 /* do some things once when we get this far in BaEaHa */ 2198 2199 if (instance->once) { 2200 instance->once = 0; 2201 instance->count2 = 1; 2202 2203 /* Have we seen an @@At (position hold) command response */ 2204 /* if not, message out */ 2205 2206 if (instance->chan != 12 && !instance->saw_At) { 2207 oncore_log(instance, LOG_NOTICE, 2208 "Not Good, no @@At command (no Position Hold), must be a GT/GT+"); 2209 oncore_sendmsg(instance, oncore_cmd_Av1, sizeof(oncore_cmd_Av1)); 2210 } 2211 2212 /* have an Almanac, can start the SiteSurvey 2213 * (actually only need to get past the almanac_load where we diddle with At 2214 * command,- we can't change it after we start the HW_SS below 2215 */ 2216 2217 mode = instance->init_type; 2218 switch (mode) { 2219 case 0: /* NO initialization, don't change anything */ 2220 case 1: /* Use given Position */ 2221 case 3: 2222 instance->site_survey = ONCORE_SS_DONE; 2223 oncore_log(instance, LOG_NOTICE, "SSstate = ONCORE_SS_DONE"); 2224 break; 2225 2226 case 2: 2227 case 4: /* Site Survey */ 2228 oncore_log(instance, LOG_NOTICE, "SSstate = ONCORE_SS_TESTING"); 2229 instance->site_survey = ONCORE_SS_TESTING; 2230 instance->count1 = 1; 2231 if (instance->chan == 12) 2232 oncore_sendmsg(instance, oncore_cmd_Gd3, sizeof(oncore_cmd_Gd3)); /* M12+T */ 2233 else 2234 oncore_sendmsg(instance, oncore_cmd_At2, sizeof(oncore_cmd_At2)); /* not GT, arg not VP */ 2235 break; 2236 } 2237 2238 /* Read back PPS Offset for Output */ 2239 /* Nb. This will fail silently for early UT (no plus) and M12 models */ 2240 2241 oncore_sendmsg(instance, oncore_cmd_Ayx, sizeof(oncore_cmd_Ayx)); 2242 2243 /* Read back Cable Delay for Output */ 2244 2245 oncore_sendmsg(instance, oncore_cmd_Azx, sizeof(oncore_cmd_Azx)); 2246 2247 /* Read back Satellite Mask Angle for Output */ 2248 2249 oncore_sendmsg(instance, oncore_cmd_Agx, sizeof(oncore_cmd_Agx)); 2250 } 2251 2252 2253 /* Unfortunately, the Gd3 command returns '3' for the M12 v1.3 firmware where it is 2254 * out-of-range and it should return 0-2. (v1.3 can't do a HW Site Survey) 2255 * We must do the Gd3, and then wait a cycle or two for things to settle, 2256 * then check Ha[130]&0x10 to see if a SS is in progress. 2257 * We will set SW if HW has not been set after an appropriate delay. 2258 */ 2259 2260 if (instance->site_survey == ONCORE_SS_TESTING) { 2261 if (instance->chan == 12) { 2262 if (instance->count1) { 2263 if (instance->count1++ > 5 || instance->BEHa[130]&0x10) { 2264 instance->count1 = 0; 2265 if (instance->BEHa[130]&0x10) { 2266 oncore_log(instance, LOG_NOTICE, 2267 "Initiating hardware 3D site survey"); 2268 2269 oncore_log(instance, LOG_NOTICE, "SSstate = ONCORE_SS_HW"); 2270 instance->site_survey = ONCORE_SS_HW; 2271 } else { 2272 oncore_log(instance, LOG_NOTICE, "SSstate = ONCORE_SS_SW"); 2273 instance->site_survey = ONCORE_SS_SW; 2274 } 2275 } 2276 } 2277 } else { 2278 if (instance->count1) { 2279 if (instance->count1++ > 5) { 2280 instance->count1 = 0; 2281 /* 2282 * For instance->site_survey to still be ONCORE_SS_TESTING, then after a 5sec 2283 * wait after the @@At2/@@Gd3 command we have not changed the state to 2284 * ONCORE_SS_HW. If the Hardware is capable of doing a Site Survey, then 2285 * the variable would have been changed by now. 2286 * There are three possibilities: 2287 * 6/8chan 2288 * (a) We did not get a response to the @@At0 or @@At2 commands, 2289 * and it must be a GT/GT+/SL with no position hold mode. 2290 * We will have to do it ourselves. 2291 * (b) We saw the @@At0, @@At2 commands, but @@At2 failed, 2292 * must be a VP or older UT which doesn't have Site Survey mode. 2293 * We will have to do it ourselves. 2294 * 12chan 2295 * (c) We saw the @@Gd command, and saw H[13]*0x10 2296 * We will have to do it ourselves (done above) 2297 */ 2298 2299 oncore_log_f(instance, LOG_INFO, 2300 "Initiating software 3D site survey (%d samples)", 2301 POS_HOLD_AVERAGE); 2302 2303 oncore_log(instance, LOG_NOTICE, "SSstate = ONCORE_SS_SW"); 2304 instance->site_survey = ONCORE_SS_SW; 2305 2306 instance->ss_lat = instance->ss_long = instance->ss_ht = 0; 2307 if (instance->chan == 12) 2308 oncore_sendmsg(instance, oncore_cmd_Gd0, sizeof(oncore_cmd_Gd0)); /* disable */ 2309 else { 2310 oncore_sendmsg(instance, oncore_cmd_At0, sizeof(oncore_cmd_At0)); /* disable */ 2311 oncore_sendmsg(instance, oncore_cmd_Av0, sizeof(oncore_cmd_Av0)); /* disable */ 2312 } 2313 } 2314 } 2315 } 2316 } 2317 2318 /* check the mode we are in 0/2/3D */ 2319 2320 if (instance->chan == 6) { 2321 if (instance->BEHa[64]&0x8) 2322 instance->mode = MODE_0D; 2323 else if (instance->BEHa[64]&0x10) 2324 instance->mode = MODE_2D; 2325 else if (instance->BEHa[64]&0x20) 2326 instance->mode = MODE_3D; 2327 } else if (instance->chan == 8) { 2328 if (instance->BEHa[72]&0x8) 2329 instance->mode = MODE_0D; 2330 else if (instance->BEHa[72]&0x10) 2331 instance->mode = MODE_2D; 2332 else if (instance->BEHa[72]&0x20) 2333 instance->mode = MODE_3D; 2334 } else if (instance->chan == 12) { 2335 int bits; 2336 2337 bits = (instance->BEHa[129]>>5) & 0x7; /* actually Ha */ 2338 if (bits == 0x4) 2339 instance->mode = MODE_0D; 2340 else if (bits == 0x6) 2341 instance->mode = MODE_2D; 2342 else if (bits == 0x7) 2343 instance->mode = MODE_3D; 2344 } 2345 2346 /* copy the record to the (extra) location in SHMEM */ 2347 2348 if (instance->shmem) { 2349 int i; 2350 u_char *smp; /* pointer to start of shared mem for Ba/Ea/Ha */ 2351 2352 switch(instance->chan) { 2353 case 6: smp = &instance->shmem[instance->shmem_Ba]; break; 2354 case 8: smp = &instance->shmem[instance->shmem_Ea]; break; 2355 case 12: smp = &instance->shmem[instance->shmem_Ha]; break; 2356 default: smp = (u_char *) NULL; break; 2357 } 2358 2359 switch (instance->mode) { 2360 case MODE_0D: i = 1; break; /* 0D, Position Hold */ 2361 case MODE_2D: i = 2; break; /* 2D, Altitude Hold */ 2362 case MODE_3D: i = 3; break; /* 3D fix */ 2363 default: i = 0; break; 2364 } 2365 2366 if (i && smp != NULL) { 2367 i *= (len+6); 2368 smp[i + 2]++; 2369 memcpy(&smp[i+3], buf, (size_t) (len+3)); 2370 } 2371 } 2372 2373 /* 2374 * check if traim timer active 2375 * if it hasn't been cleared, then @@Bn/@@En/@@Hn did not respond 2376 */ 2377 2378 if (instance->traim_delay) { 2379 if (instance->traim_delay++ > 5) { 2380 instance->traim = 0; 2381 instance->traim_delay = 0; 2382 cp = "ONCORE: Did not detect TRAIM response, TRAIM = OFF"; 2383 oncore_log(instance, LOG_INFO, cp); 2384 2385 oncore_set_traim(instance); 2386 } else 2387 return; 2388 2389 } 2390 2391 /* by now should have a @@Ba/@@Ea/@@Ha with good data in it */ 2392 2393 if (!instance->have_dH && !instance->traim_delay) 2394 oncore_compute_dH(instance); 2395 2396 /* 2397 * must be ONCORE_RUN if we are here. 2398 * Have # chan and TRAIM by now. 2399 */ 2400 2401 instance->pp->year = buf[6]*256+buf[7]; 2402 instance->pp->day = ymd2yd(buf[6]*256+buf[7], buf[4], buf[5]); 2403 instance->pp->hour = buf[8]; 2404 instance->pp->minute = buf[9]; 2405 instance->pp->second = buf[10]; 2406 2407 /* 2408 * Are we doing a Hardware or Software Site Survey? 2409 */ 2410 2411 if (instance->site_survey == ONCORE_SS_HW || instance->site_survey == ONCORE_SS_SW) 2412 oncore_ss(instance); 2413 2414 /* see if we ever saw a response from the @@Ayx above */ 2415 2416 if (instance->count2) { 2417 if (instance->count2++ > 5) { /* this delay to check on @@Ay command */ 2418 instance->count2 = 0; 2419 2420 /* Have we seen an Ay (1PPS time offset) command response */ 2421 /* if not, and non-zero offset, zero the offset, and send message */ 2422 2423 if (!instance->saw_Ay && instance->offset) { 2424 oncore_log(instance, LOG_INFO, "No @@Ay command, PPS OFFSET ignored"); 2425 instance->offset = 0; 2426 } 2427 } 2428 } 2429 2430 /* 2431 * Check the leap second status once per day. 2432 */ 2433 2434 oncore_check_leap_sec(instance); 2435 2436 /* 2437 * if SHMEM active, every 15s, steal one 'tick' to get 2D or 3D posn. 2438 */ 2439 2440 if (instance->shmem && !instance->shmem_bad_Ea && instance->shmem_Posn && (instance->site_survey == ONCORE_SS_DONE)) 2441 oncore_shmem_get_3D(instance); 2442 2443 if (!instance->traim) /* NO traim, no BnEnHn, go get tick */ 2444 oncore_get_timestamp(instance, instance->offset, instance->offset); 2445 } 2446 2447 2448 2449 /* Almanac Status */ 2450 2451 static void 2452 oncore_msg_Bd( 2453 struct instance *instance, 2454 u_char *buf, 2455 size_t len 2456 ) 2457 { 2458 oncore_log_f(instance, LOG_NOTICE, 2459 "Bd: Almanac %s, week = %d, t = %d, %d SVs: %x", 2460 ((buf[4]) ? "LOADED" : "(NONE)"), buf[5], buf[6], 2461 buf[7], w32(&buf[8])); 2462 } 2463 2464 2465 2466 /* get leap-second warning message */ 2467 2468 /* 2469 * @@Bj does NOT behave as documented in current Oncore firmware. 2470 * It turns on the LEAP indicator when the data is set, and does not, 2471 * as documented, wait until the beginning of the month when the 2472 * leap second will occur. 2473 * Since this firmware bug will never be fixed in all the outstanding Oncore receivers 2474 * @@Bj is only called in June/December. 2475 */ 2476 2477 static void 2478 oncore_msg_Bj( 2479 struct instance *instance, 2480 u_char *buf, 2481 size_t len 2482 ) 2483 { 2484 const char *cp; 2485 2486 instance->saw_Bj = 1; 2487 2488 switch(buf[4]) { 2489 case 1: 2490 instance->pp->leap = LEAP_ADDSECOND; 2491 cp = "Set pp.leap to LEAP_ADDSECOND"; 2492 break; 2493 case 2: 2494 instance->pp->leap = LEAP_DELSECOND; 2495 cp = "Set pp.leap to LEAP_DELSECOND"; 2496 break; 2497 case 0: 2498 default: 2499 instance->pp->leap = LEAP_NOWARNING; 2500 cp = "Set pp.leap to LEAP_NOWARNING"; 2501 break; 2502 } 2503 oncore_log(instance, LOG_NOTICE, cp); 2504 } 2505 2506 2507 2508 static void 2509 oncore_msg_Bl( 2510 struct instance *instance, 2511 u_char *buf, 2512 size_t len 2513 ) 2514 { 2515 int subframe, valid, page, i, j, tow; 2516 int day_now, day_lsf; 2517 const char *cp; 2518 enum { 2519 WARN_NOT_YET, 2520 WARN_0, 2521 WARN_PLUS, 2522 WARN_MINUS 2523 } warn; 2524 2525 2526 subframe = buf[6] & 017; 2527 valid = (buf[6] >> 4) & 017; 2528 page = buf[7]; 2529 2530 if ((!instance->Bl.lsf_flg && !instance->Bl.wn_flg) && (subframe == 4 && page == 18 && valid == 10)) { 2531 instance->Bl.dt_ls = buf[32]; 2532 instance->Bl.WN_lsf = buf[33]; 2533 instance->Bl.DN_lsf = buf[34]; 2534 instance->Bl.dt_lsf = buf[35]; 2535 instance->Bl.lsf_flg++; 2536 } 2537 if ((instance->Bl.lsf_flg && !instance->Bl.wn_flg) && (subframe == 1 && valid == 10)) { 2538 i = (buf[7+7]<<8) + buf[7+8]; 2539 instance->Bl.WN = i >> 6; 2540 tow = (buf[7+4]<<16) + (buf[7+5]<<8) + buf[7+6]; 2541 tow >>= 7; 2542 tow = tow & 0377777; 2543 tow <<= 2; 2544 instance->Bl.DN = tow/57600L + 1; 2545 instance->Bl.wn_flg++; 2546 } 2547 if (instance->Bl.wn_flg && instance->Bl.lsf_flg) { 2548 instance->Bl.wn_flg = instance->Bl.lsf_flg = 0; 2549 oncore_cmd_Bl[2] = 0; 2550 oncore_sendmsg(instance, oncore_cmd_Bl, sizeof oncore_cmd_Bl); 2551 oncore_cmd_Bl[2] = 1; 2552 2553 i = instance->Bl.WN&01400; 2554 instance->Bl.WN_lsf |= i; 2555 2556 /* have everything I need, doit */ 2557 2558 i = (instance->Bl.WN_lsf - instance->Bl.WN); 2559 if (i < 0) 2560 i += 1024; 2561 day_now = instance->Bl.DN; 2562 day_lsf = 7*i + instance->Bl.DN_lsf; 2563 2564 /* ignore if in past or more than a month in future */ 2565 2566 warn = WARN_NOT_YET; 2567 if (day_lsf >= day_now && day_lsf - day_now < 32) { 2568 /* if < 28d, doit, if 28-31, ck day-of-month < 20 (not at end of prev month) */ 2569 if (day_lsf - day_now < 28 || instance->BEHa[5] < 20) { 2570 i = instance->Bl.dt_lsf - instance->Bl.dt_ls; 2571 switch (i) { 2572 case -1: 2573 warn = WARN_MINUS; 2574 break; 2575 case 0: 2576 warn = WARN_0; 2577 break; 2578 case 1: 2579 warn = WARN_PLUS; 2580 break; 2581 } 2582 } 2583 } 2584 2585 switch (warn) { 2586 case WARN_0: 2587 case WARN_NOT_YET: 2588 instance->peer->leap = LEAP_NOWARNING; 2589 cp = "Set peer.leap to LEAP_NOWARNING"; 2590 break; 2591 case WARN_MINUS: 2592 instance->peer->leap = LEAP_DELSECOND; 2593 cp = "Set peer.leap to LEAP_DELSECOND"; 2594 break; 2595 case WARN_PLUS: 2596 instance->peer->leap = LEAP_ADDSECOND; 2597 cp = "Set peer.leap to LEAP_ADDSECOND"; 2598 break; 2599 default: 2600 cp = NULL; 2601 break; 2602 } 2603 oncore_log(instance, LOG_NOTICE, cp); 2604 2605 i = instance->Bl.dt_lsf-instance->Bl.dt_ls; 2606 if (i) { 2607 j = (i >= 0) ? i : -i; /* abs(i) */ 2608 oncore_log_f(instance, LOG_NOTICE, 2609 "see Leap_Second (%c%d) in %d days", 2610 ((i >= 0) ? '+' : '-'), j, 2611 day_lsf-day_now); 2612 } 2613 } 2614 2615 /* 2616 * Reg only wants the following output for "deeper" driver debugging. 2617 * See Bug 2142 and Bug 1866 2618 */ 2619 #if 0 2620 oncore_log_f(instance, LOG_DEBUG, 2621 "dt_ls = %d dt_lsf = %d WN = %d DN = %d WN_lsf = %d DNlsf = %d wn_flg = %d lsf_flg = %d Bl_day = %d", 2622 instance->Bl.dt_ls, instance->Bl.dt_lsf, 2623 instance->Bl.WN, instance->Bl.DN, 2624 instance->Bl.WN_lsf, instance->Bl.DN_lsf, 2625 instance->Bl.wn_flg, instance->Bl.lsf_flg, 2626 instance->Bl.Bl_day); 2627 #endif 2628 } 2629 2630 2631 static void 2632 oncore_msg_BnEnHn( 2633 struct instance *instance, 2634 u_char *buf, 2635 size_t len 2636 ) 2637 { 2638 long dt1, dt2; 2639 2640 if (instance->o_state != ONCORE_RUN) 2641 return; 2642 2643 if (instance->traim_delay) { /* flag that @@Bn/@@En/Hn returned */ 2644 instance->traim_ck = 1; 2645 instance->traim_delay = 0; 2646 oncore_log(instance, LOG_NOTICE, "ONCORE: Detected TRAIM, TRAIM = ON"); 2647 2648 oncore_set_traim(instance); 2649 } 2650 2651 memcpy(instance->BEHn, buf, (size_t) len); /* Bn or En or Hn */ 2652 2653 if (!instance->traim) /* BnEnHn will be turned off in any case */ 2654 return; 2655 2656 /* If Time RAIM doesn't like it, don't trust it */ 2657 2658 if (buf[2] == 'H') { 2659 if (instance->BEHn[6]) { /* bad TRAIM */ 2660 oncore_log(instance, LOG_WARNING, "BAD TRAIM"); 2661 return; 2662 } 2663 2664 dt1 = instance->saw_tooth + instance->offset; /* dt this time step */ 2665 instance->saw_tooth = (s_char) instance->BEHn[14]; /* update for next time Hn[14] */ 2666 dt2 = instance->saw_tooth + instance->offset; /* dt next time step */ 2667 } else { 2668 if (instance->BEHn[21]) /* bad TRAIM */ 2669 return; 2670 2671 dt1 = instance->saw_tooth + instance->offset; /* dt this time step */ 2672 instance->saw_tooth = (s_char) instance->BEHn[25]; /* update for next time Bn[25], En[25] */ 2673 dt2 = instance->saw_tooth + instance->offset; /* dt next time step */ 2674 } 2675 2676 oncore_get_timestamp(instance, dt1, dt2); 2677 } 2678 2679 2680 2681 /* Here for @@Ca, @@Fa and @@Ia messages */ 2682 2683 /* These are Self test Commands for 6, 8, and 12 chan receivers. 2684 * There are good reasons NOT to do a @@Ca, @@Fa or @@Ia command with the ONCORE. 2685 * It was found that under some circumstances the following 2686 * command would fail if issued immediately after the return from the 2687 * @@Fa, but a 2sec delay seemed to fix things. Since simply calling 2688 * sleep(2) is wasteful, and may cause trouble for some OS's, repeating 2689 * itimer, we set a flag, and test it at the next POLL. If it hasn't 2690 * been cleared, we reissue the @@Cj that is issued below. 2691 * Note that we do a @@Cj at the beginning, and again here. 2692 * The first is to get the info, the 2nd is just used as a safe command 2693 * after the @@Fa for all Oncores (and it was in this posn in the 2694 * original code). 2695 */ 2696 2697 static void 2698 oncore_msg_CaFaIa( 2699 struct instance *instance, 2700 u_char *buf, 2701 size_t len 2702 ) 2703 { 2704 int i; 2705 2706 if (instance->o_state == ONCORE_TEST_SENT) { 2707 enum antenna_state antenna; 2708 2709 instance->timeout = 0; 2710 2711 #if ONCORE_VERBOSE_SELF_TEST 2712 if (debug > 2) { 2713 if (buf[2] == 'I') 2714 oncore_log_f(instance, LOG_DEBUG, 2715 ">>@@%ca %x %x %x", buf[2], 2716 buf[4], buf[5], buf[6]); 2717 else 2718 oncore_log_f(instance, LOG_DEBUG, 2719 ">>@@%ca %x %x", buf[2], 2720 buf[4], buf[5]); 2721 } 2722 #endif 2723 2724 antenna = (buf[4] & 0xc0) >> 6; 2725 buf[4] &= ~0xc0; 2726 2727 i = buf[4] || buf[5]; 2728 if (buf[2] == 'I') i = i || buf[6]; 2729 if (i) { 2730 if (buf[2] == 'I') 2731 oncore_log_f(instance, LOG_ERR, 2732 "self test failed: result %02x %02x %02x", 2733 buf[4], buf[5], buf[6]); 2734 else 2735 oncore_log_f(instance, LOG_ERR, 2736 "self test failed: result %02x %02x", 2737 buf[4], buf[5]); 2738 2739 oncore_log(instance, LOG_ERR, 2740 "ONCORE: self test failed, shutting down driver"); 2741 2742 refclock_report(instance->peer, CEVNT_FAULT); 2743 oncore_shutdown(instance->unit, instance->peer); 2744 return; 2745 } 2746 2747 /* report the current antenna state */ 2748 2749 oncore_antenna_report(instance, antenna); 2750 2751 instance->o_state = ONCORE_INIT; 2752 oncore_log(instance, LOG_NOTICE, "state = ONCORE_INIT"); 2753 2754 instance->timeout = 4; 2755 oncore_sendmsg(instance, oncore_cmd_Cj, sizeof(oncore_cmd_Cj)); 2756 } 2757 } 2758 2759 2760 2761 /* 2762 * Demultiplex the almanac into shmem 2763 */ 2764 2765 static void 2766 oncore_msg_Cb( 2767 struct instance *instance, 2768 u_char *buf, 2769 size_t len 2770 ) 2771 { 2772 int i; 2773 2774 if (instance->shmem == NULL) 2775 return; 2776 2777 if (buf[4] == 5 && buf[5] > 0 && buf[5] < 26) 2778 i = buf[5]; 2779 else if (buf[4] == 4 && buf[5] <= 5) 2780 i = buf[5] + 24; 2781 else if (buf[4] == 4 && buf[5] <= 10) 2782 i = buf[5] + 23; 2783 else if (buf[4] == 4 && buf[5] == 25) 2784 i = 34; 2785 else { 2786 oncore_log(instance, LOG_NOTICE, "Cb: Response is NO ALMANAC"); 2787 return; 2788 } 2789 2790 i *= 36; 2791 instance->shmem[instance->shmem_Cb + i + 2]++; 2792 memcpy(instance->shmem + instance->shmem_Cb + i + 3, buf, (size_t) (len + 3)); 2793 2794 #ifdef ONCORE_VERBOSE_MSG_CB 2795 oncore_log_f(instance, LOG_DEBUG, "See Cb [%d,%d]", buf[4], 2796 buf[5]); 2797 #endif 2798 } 2799 2800 2801 2802 /* 2803 * Set to Factory Defaults (Reasonable for UT w/ no Battery Backup 2804 * not so for VP (eeprom) or any unit with a battery 2805 */ 2806 2807 static void 2808 oncore_msg_Cf( 2809 struct instance *instance, 2810 u_char *buf, 2811 size_t len 2812 ) 2813 { 2814 if (instance->o_state == ONCORE_RESET_SENT) { 2815 oncore_sendmsg(instance, oncore_cmd_Cg, sizeof(oncore_cmd_Cg)); /* Return to Posn Fix mode */ 2816 /* Reset set VP to IDLE */ 2817 instance->o_state = ONCORE_TEST_SENT; 2818 oncore_log(instance, LOG_NOTICE, "state = ONCORE_TEST_SENT"); 2819 2820 oncore_sendmsg(instance, oncore_cmd_Cj, sizeof(oncore_cmd_Cj)); 2821 } 2822 } 2823 2824 2825 2826 /* 2827 * This is the Grand Central Station for the Preliminary Initialization. 2828 * Once done here we move on to oncore_msg_BaEaHa for final Initialization and Running. 2829 * 2830 * We do an @@Cj whenever we need a safe command for all Oncores. 2831 * The @@Cj gets us back here where we can switch to the next phase of setup. 2832 * 2833 * o Once at the very beginning (in start) to get the Model number. 2834 * This info is printed, but no longer used. 2835 * o Again after we have determined the number of Channels in the receiver. 2836 * o And once later after we have done a reset and test, (which may hang), 2837 * as we are about to initialize the Oncore and start it running. 2838 * o We have one routine below for each case. 2839 */ 2840 2841 static void 2842 oncore_msg_Cj( 2843 struct instance *instance, 2844 u_char *buf, 2845 size_t len 2846 ) 2847 { 2848 int mode; 2849 2850 memcpy(instance->Cj, buf, len); 2851 2852 instance->timeout = 0; 2853 if (instance->o_state == ONCORE_CHECK_ID) { 2854 oncore_msg_Cj_id(instance, buf, len); 2855 oncore_chan_test(instance); 2856 } else if (instance->o_state == ONCORE_HAVE_CHAN) { 2857 mode = instance->init_type; 2858 if (mode == 3 || mode == 4) { /* Cf will return here to check for TEST */ 2859 instance->o_state = ONCORE_RESET_SENT; 2860 oncore_log(instance, LOG_NOTICE, "state = ONCORE_RESET_SENT"); 2861 oncore_sendmsg(instance, oncore_cmd_Cf, sizeof(oncore_cmd_Cf)); 2862 } else { 2863 instance->o_state = ONCORE_TEST_SENT; 2864 oncore_log(instance, LOG_NOTICE, "state = ONCORE_TEST_SENT"); 2865 } 2866 } 2867 2868 if (instance->o_state == ONCORE_TEST_SENT) { 2869 if (instance->chan == 6) 2870 oncore_sendmsg(instance, oncore_cmd_Ca, sizeof(oncore_cmd_Ca)); 2871 else if (instance->chan == 8) 2872 oncore_sendmsg(instance, oncore_cmd_Fa, sizeof(oncore_cmd_Fa)); 2873 else if (instance->chan == 12) 2874 oncore_sendmsg(instance, oncore_cmd_Ia, sizeof(oncore_cmd_Ia)); 2875 } else if (instance->o_state == ONCORE_INIT) 2876 oncore_msg_Cj_init(instance, buf, len); 2877 } 2878 2879 2880 2881 /* The information on determining a Oncore 'Model', viz VP, UT, etc, from 2882 * the Model Number comes from "Richard M. Hambly" <rick@cnssys.com> 2883 * and from Motorola. Until recently Rick was the only source of 2884 * this information as Motorola didn't give the information out. 2885 * 2886 * Determine the Type from the Model #, this determines #chan and if TRAIM is 2887 * available. 2888 * 2889 * The Information from this routine is NO LONGER USED. 2890 * The RESULTS are PRINTED, BUT NOT USED, and the routine COULD BE DELETED 2891 */ 2892 2893 static void 2894 oncore_msg_Cj_id( 2895 struct instance *instance, 2896 u_char *buf, 2897 size_t len 2898 ) 2899 { 2900 char *cp2, Model[21]; 2901 const char *cp, *cp1; 2902 2903 /* Write Receiver ID message to clockstats file */ 2904 2905 instance->Cj[294] = '\0'; 2906 for (cp= (char *)instance->Cj; cp< (char *) &instance->Cj[294]; ) { 2907 char *cpw = strchr(cp, '\r'); 2908 if (!cpw) 2909 cpw = (char *)&instance->Cj[294]; 2910 *cpw = '\0'; 2911 oncore_log(instance, LOG_NOTICE, cp); 2912 *cpw = '\r'; 2913 cp = cpw+2; 2914 } 2915 2916 /* next, the Firmware Version and Revision numbers */ 2917 2918 instance->version = atoi((char *) &instance->Cj[83]); 2919 instance->revision = atoi((char *) &instance->Cj[111]); 2920 2921 /* from model number decide which Oncore this is, 2922 and then the number of channels */ 2923 2924 for (cp= (char *) &instance->Cj[160]; *cp == ' '; cp++) /* start right after 'Model #' */ 2925 ; 2926 cp1 = cp; 2927 cp2 = Model; 2928 for (; !isspace((unsigned char)*cp) && cp-cp1 < 20; cp++, cp2++) 2929 *cp2 = *cp; 2930 *cp2 = '\0'; 2931 2932 cp = 0; 2933 if (!strncmp(Model, "PVT6", (size_t) 4)) { 2934 cp = "PVT6"; 2935 instance->model = ONCORE_PVT6; 2936 } else if (Model[0] == 'A') { 2937 cp = "Basic"; 2938 instance->model = ONCORE_BASIC; 2939 } else if (Model[0] == 'B' || !strncmp(Model, "T8", (size_t) 2)) { 2940 cp = "VP"; 2941 instance->model = ONCORE_VP; 2942 } else if (Model[0] == 'P') { 2943 cp = "M12"; 2944 instance->model = ONCORE_M12; 2945 } else if (Model[0] == 'R' || Model[0] == 'D' || Model[0] == 'S') { 2946 if (Model[5] == 'N') { 2947 cp = "GT"; 2948 instance->model = ONCORE_GT; 2949 } else if ((Model[1] == '3' || Model[1] == '4') && Model[5] == 'G') { 2950 cp = "GT+"; 2951 instance->model = ONCORE_GTPLUS; 2952 } else if ((Model[1] == '5' && Model[5] == 'U') || (Model[1] == '1' && Model[5] == 'A')) { 2953 cp = "UT"; 2954 instance->model = ONCORE_UT; 2955 } else if (Model[1] == '5' && Model[5] == 'G') { 2956 cp = "UT+"; 2957 instance->model = ONCORE_UTPLUS; 2958 } else if (Model[1] == '6' && Model[5] == 'G') { 2959 cp = "SL"; 2960 instance->model = ONCORE_SL; 2961 } else { 2962 cp = "Unknown"; 2963 instance->model = ONCORE_UNKNOWN; 2964 } 2965 } else { 2966 cp = "Unknown"; 2967 instance->model = ONCORE_UNKNOWN; 2968 } 2969 2970 /* use MODEL to set CHAN and TRAIM and possibly zero SHMEM */ 2971 2972 oncore_log_f(instance, LOG_INFO, 2973 "This looks like an Oncore %s with version %d.%d firmware.", 2974 cp, instance->version, instance->revision); 2975 2976 instance->chan_id = 8; /* default */ 2977 if (instance->model == ONCORE_BASIC || instance->model == ONCORE_PVT6) 2978 instance->chan_id = 6; 2979 else if (instance->model == ONCORE_VP || instance->model == ONCORE_UT || instance->model == ONCORE_UTPLUS) 2980 instance->chan_id = 8; 2981 else if (instance->model == ONCORE_M12) 2982 instance->chan_id = 12; 2983 2984 instance->traim_id = 0; /* default */ 2985 if (instance->model == ONCORE_BASIC || instance->model == ONCORE_PVT6) 2986 instance->traim_id = 0; 2987 else if (instance->model == ONCORE_VP || instance->model == ONCORE_UT || instance->model == ONCORE_UTPLUS) 2988 instance->traim_id = 1; 2989 else if (instance->model == ONCORE_M12) 2990 instance->traim_id = -1; 2991 2992 oncore_log_f(instance, LOG_INFO, "Channels = %d, TRAIM = %s", 2993 instance->chan_id, 2994 ((instance->traim_id < 0) 2995 ? "UNKNOWN" 2996 : (instance->traim_id > 0) 2997 ? "ON" 2998 : "OFF")); 2999 } 3000 3001 3002 3003 /* OK, know type of Oncore, have possibly reset it, and have tested it. 3004 * We know the number of channels. 3005 * We will determine whether we have TRAIM before we actually start. 3006 * Now initialize. 3007 */ 3008 3009 static void 3010 oncore_msg_Cj_init( 3011 struct instance *instance, 3012 u_char *buf, 3013 size_t len 3014 ) 3015 { 3016 u_char Cmd[20]; 3017 int mode; 3018 3019 3020 /* The M12 with 1.3 or 2.0 Firmware, loses track of all Satellites and has to 3021 * start again if we go from 0D -> 3D, then loses them again when we 3022 * go from 3D -> 0D. We do this to get a @@Ea message for SHMEM. 3023 * For NOW we will turn this aspect of filling SHMEM off for the M12 3024 */ 3025 3026 if (instance->chan == 12) { 3027 instance->shmem_bad_Ea = 1; 3028 oncore_log_f(instance, LOG_NOTICE, 3029 "*** SHMEM partially enabled for ONCORE M12 s/w v%d.%d ***", 3030 instance->version, instance->revision); 3031 } 3032 3033 oncore_sendmsg(instance, oncore_cmd_Cg, sizeof(oncore_cmd_Cg)); /* Return to Posn Fix mode */ 3034 oncore_sendmsg(instance, oncore_cmd_Bb, sizeof(oncore_cmd_Bb)); /* turn on for shmem (6/8/12) */ 3035 oncore_sendmsg(instance, oncore_cmd_Ek, sizeof(oncore_cmd_Ek)); /* turn off (VP) */ 3036 oncore_sendmsg(instance, oncore_cmd_Aw, sizeof(oncore_cmd_Aw)); /* UTC time (6/8/12) */ 3037 oncore_sendmsg(instance, oncore_cmd_AB, sizeof(oncore_cmd_AB)); /* Appl type static (VP) */ 3038 oncore_sendmsg(instance, oncore_cmd_Be, sizeof(oncore_cmd_Be)); /* Tell us the Almanac for shmem (6/8/12) */ 3039 oncore_sendmsg(instance, oncore_cmd_Bd, sizeof(oncore_cmd_Bd)); /* Tell us when Almanac changes */ 3040 3041 mode = instance->init_type; 3042 3043 /* If there is Position input in the Config file 3044 * and mode = (1,3) set it as posn hold posn, goto 0D mode. 3045 * or mode = (2,4) set it as INITIAL position, and do Site Survey. 3046 */ 3047 3048 if (instance->posn_set) { 3049 oncore_log(instance, LOG_INFO, "Setting Posn from input data"); 3050 oncore_set_posn(instance); /* this should print posn indirectly thru the As cmd */ 3051 } else /* must issue an @@At here to check on 6/8 Position Hold, set_posn would have */ 3052 if (instance->chan != 12) 3053 oncore_sendmsg(instance, oncore_cmd_Atx, sizeof(oncore_cmd_Atx)); 3054 3055 if (mode != 0) { 3056 /* cable delay in ns */ 3057 memcpy(Cmd, oncore_cmd_Az, (size_t) sizeof(oncore_cmd_Az)); 3058 w32_buf(&Cmd[-2+4], (int)instance->delay); 3059 oncore_sendmsg(instance, Cmd, sizeof(oncore_cmd_Az)); /* 6,8,12 */ 3060 3061 /* PPS offset in ns */ 3062 memcpy(Cmd, oncore_cmd_Ay, (size_t) sizeof(oncore_cmd_Ay)); /* some have it, some don't */ 3063 w32_buf(&Cmd[-2+4], instance->offset); /* will check for hw response */ 3064 oncore_sendmsg(instance, Cmd, sizeof(oncore_cmd_Ay)); 3065 3066 /* Satellite mask angle */ 3067 3068 if (instance->Ag != 0xff) { /* will have 0xff in it if not set by user */ 3069 memcpy(Cmd, oncore_cmd_Ag, (size_t) sizeof(oncore_cmd_Ag)); 3070 Cmd[-2+4] = instance->Ag; 3071 oncore_sendmsg(instance, Cmd, sizeof(oncore_cmd_Ag)); 3072 } 3073 } 3074 3075 /* 6, 8 12 chan - Position/Status/Data Output Message, 1/s 3076 * now we're really running 3077 * these were ALL started in the chan test, 3078 * However, if we had mode=3,4 then commands got turned off, so we turn 3079 * them on again here just in case 3080 */ 3081 3082 if (instance->chan == 6) { /* start 6chan, kill 8,12chan commands, possibly testing VP in 6chan mode */ 3083 oncore_sendmsg(instance, oncore_cmd_Ea0, sizeof(oncore_cmd_Ea0)); 3084 oncore_sendmsg(instance, oncore_cmd_En0, sizeof(oncore_cmd_En0)); 3085 oncore_sendmsg(instance, oncore_cmd_Ha0, sizeof(oncore_cmd_Ha0)); 3086 oncore_sendmsg(instance, oncore_cmd_Hn0, sizeof(oncore_cmd_Hn0)); 3087 oncore_sendmsg(instance, oncore_cmd_Ba, sizeof(oncore_cmd_Ba )); 3088 } else if (instance->chan == 8) { /* start 8chan, kill 6,12chan commands */ 3089 oncore_sendmsg(instance, oncore_cmd_Ba0, sizeof(oncore_cmd_Ba0)); 3090 oncore_sendmsg(instance, oncore_cmd_Bn0, sizeof(oncore_cmd_Bn0)); 3091 oncore_sendmsg(instance, oncore_cmd_Ha0, sizeof(oncore_cmd_Ha0)); 3092 oncore_sendmsg(instance, oncore_cmd_Hn0, sizeof(oncore_cmd_Hn0)); 3093 oncore_sendmsg(instance, oncore_cmd_Ea, sizeof(oncore_cmd_Ea )); 3094 } else if (instance->chan == 12){ /* start 12chan, kill 6,12chan commands */ 3095 oncore_sendmsg(instance, oncore_cmd_Ba0, sizeof(oncore_cmd_Ba0)); 3096 oncore_sendmsg(instance, oncore_cmd_Bn0, sizeof(oncore_cmd_Bn0)); 3097 oncore_sendmsg(instance, oncore_cmd_Ea0, sizeof(oncore_cmd_Ea0)); 3098 oncore_sendmsg(instance, oncore_cmd_En0, sizeof(oncore_cmd_En0)); 3099 oncore_sendmsg(instance, oncore_cmd_Ha, sizeof(oncore_cmd_Ha )); 3100 oncore_cmd_Gc[2] = (instance->pps_control < 0) ? 1 : instance->pps_control; 3101 oncore_sendmsg(instance, oncore_cmd_Gc, sizeof(oncore_cmd_Gc)); /* PPS off/continuous/Tracking 1+sat/TRAIM */ 3102 } 3103 3104 instance->count = 1; 3105 instance->o_state = ONCORE_ALMANAC; 3106 oncore_log(instance, LOG_NOTICE, "state = ONCORE_ALMANAC"); 3107 } 3108 3109 3110 3111 /* 12chan position */ 3112 3113 static void 3114 oncore_msg_Ga( 3115 struct instance *instance, 3116 u_char *buf, 3117 size_t len 3118 ) 3119 { 3120 long lat, lon, ht; 3121 double Lat, Lon, Ht; 3122 3123 3124 lat = buf_w32(&buf[4]); 3125 lon = buf_w32(&buf[8]); 3126 ht = buf_w32(&buf[12]); /* GPS ellipsoid */ 3127 3128 Lat = lat; 3129 Lon = lon; 3130 Ht = ht; 3131 3132 Lat /= 3600000; 3133 Lon /= 3600000; 3134 Ht /= 100; 3135 3136 oncore_log_f(instance, LOG_NOTICE, 3137 "Ga Posn Lat = %.7f, Lon = %.7f, Ht = %.2f", Lat, 3138 Lon, Ht); 3139 3140 instance->ss_lat = lat; 3141 instance->ss_long = lon; 3142 instance->ss_ht = ht; 3143 3144 oncore_print_posn(instance); 3145 } 3146 3147 3148 3149 /* 12 chan time/date */ 3150 3151 static void 3152 oncore_msg_Gb( 3153 struct instance *instance, 3154 u_char *buf, 3155 size_t len 3156 ) 3157 { 3158 const char * gmts; 3159 int mo, d, y, h, m, s, gmth, gmtm; 3160 3161 mo = buf[4]; 3162 d = buf[5]; 3163 y = 256*buf[6]+buf[7]; 3164 3165 h = buf[8]; 3166 m = buf[9]; 3167 s = buf[10]; 3168 3169 gmts = ((buf[11] == 0) ? "+" : "-"); 3170 gmth = buf[12]; 3171 gmtm = buf[13]; 3172 3173 oncore_log_f(instance, LOG_NOTICE, 3174 "Date/Time set to: %d%s%d %2d:%02d:%02d GMT (GMT offset is %s%02d:%02d)", 3175 d, months[mo-1], y, h, m, s, gmts, gmth, gmtm); 3176 } 3177 3178 3179 3180 /* Response to PPS Control message (M12 and M12+T only ) */ 3181 3182 static void 3183 oncore_msg_Gc( 3184 struct instance *instance, 3185 u_char *buf, 3186 size_t len 3187 ) 3188 { 3189 const char *tbl[] = {"OFF", "ON", "SATELLITE", "TRAIM" }; 3190 3191 instance->pps_control_msg_seen = 1; 3192 oncore_log_f(instance, LOG_INFO, "PPS Control set to %s", 3193 tbl[buf[4]]); 3194 } 3195 3196 3197 3198 /* Leap Second for M12, gives all info from satellite message */ 3199 /* also in UT v3.0 */ 3200 3201 static void 3202 oncore_msg_Gj( 3203 struct instance *instance, 3204 u_char *buf, 3205 size_t len 3206 ) 3207 { 3208 static const char * insrem[2] = { 3209 "removed", 3210 "inserted" 3211 }; 3212 3213 int dt; 3214 const char *cp; 3215 3216 instance->saw_Gj = 1; /* flag, saw_Gj, dont need to try Bj in check_leap */ 3217 3218 /* print the message to verify whats there */ 3219 3220 dt = buf[5] - buf[4]; 3221 3222 oncore_log_f(instance, LOG_INFO, 3223 "Leap Sec Msg: %d %d %d %d %d %d %d %d %d %d", 3224 buf[4], buf[5], 256 * buf[6] + buf[7], buf[8], 3225 buf[9], buf[10], 3226 (buf[14] + 256 * 3227 (buf[13] + 256 * (buf[12] + 256 * buf[11]))), 3228 buf[15], buf[16], buf[17]); 3229 3230 /* There seems to be eternal confusion about when a leap second 3231 * takes place. It's the second *before* the new TAI offset 3232 * becomes effective. But since the ONCORE receiver tells us 3233 * just that, we would have to do some time/date calculations to 3234 * get the actual leap second -- that is, the one that is 3235 * deleted or inserted. 3236 * 3237 * Going through all this for a simple log is probably overkill, 3238 * so for fixing bug#1050 the message output is changed to 3239 * reflect the fact that it tells the second after the leap 3240 * second. 3241 */ 3242 if (dt) 3243 oncore_log_f(instance, LOG_NOTICE, 3244 "Leap second %s (%d) before %04u-%02u-%02u/%02u:%02u:%02u", 3245 insrem[(dt > 0)], dt, 3246 256u * buf[6] + buf[7], buf[8], buf[9], 3247 buf[15], buf[16], buf[17]); 3248 3249 /* Only raise warning within a month of the leap second */ 3250 3251 instance->pp->leap = LEAP_NOWARNING; 3252 cp = "Set pp.leap to LEAP_NOWARNING"; 3253 3254 if (buf[6] == instance->BEHa[6] && buf[7] == instance->BEHa[7] && /* year */ 3255 buf[8] == instance->BEHa[4]) { /* month */ 3256 if (dt) { 3257 if (dt < 0) { 3258 instance->pp->leap = LEAP_DELSECOND; 3259 cp = "Set pp.leap to LEAP_DELSECOND"; 3260 } else { 3261 instance->pp->leap = LEAP_ADDSECOND; 3262 cp = "Set pp.leap to LEAP_ADDSECOND"; 3263 } 3264 } 3265 } 3266 oncore_log(instance, LOG_INFO, cp); 3267 } 3268 3269 3270 3271 /* Power on failure */ 3272 3273 static void 3274 oncore_msg_Sz( 3275 struct instance *instance, 3276 u_char *buf, 3277 size_t len 3278 ) 3279 { 3280 if (instance && instance->peer) { 3281 oncore_log(instance, LOG_ERR, "Oncore: System Failure at Power On"); 3282 oncore_shutdown(instance->unit, instance->peer); 3283 } 3284 } 3285 3286 /************** Small Subroutines ***************/ 3287 3288 3289 static void 3290 oncore_antenna_report( 3291 struct instance *instance, 3292 enum antenna_state new_state) 3293 { 3294 const char *cp; 3295 3296 if (instance->ant_state == new_state) 3297 return; 3298 3299 switch (new_state) { 3300 case ONCORE_ANTENNA_OK: cp = "GPS antenna: OK"; break; 3301 case ONCORE_ANTENNA_OC: cp = "GPS antenna: short (overcurrent)"; break; 3302 case ONCORE_ANTENNA_UC: cp = "GPS antenna: open (not connected)"; break; 3303 case ONCORE_ANTENNA_NV: cp = "GPS antenna: short (no voltage)"; break; 3304 default: cp = "GPS antenna: ?"; break; 3305 } 3306 3307 instance->ant_state = new_state; 3308 oncore_log(instance, LOG_NOTICE, cp); 3309 } 3310 3311 3312 3313 static void 3314 oncore_chan_test( 3315 struct instance *instance 3316 ) 3317 { 3318 /* subroutine oncore_Cj_id has determined the number of channels from the 3319 * model number of the attached oncore. This is not always correct since 3320 * the oncore could have non-standard firmware. Here we check (independently) by 3321 * trying a 6, 8, and 12 chan command, and see which responds. 3322 * Caution: more than one CAN respond. 3323 * 3324 * This #chan is used by the code rather than that calculated from the model number. 3325 */ 3326 3327 instance->o_state = ONCORE_CHECK_CHAN; 3328 oncore_log(instance, LOG_NOTICE, "state = ONCORE_CHECK_CHAN"); 3329 3330 instance->count3 = 1; 3331 oncore_sendmsg(instance, oncore_cmd_Ba, sizeof(oncore_cmd_Ba)); 3332 oncore_sendmsg(instance, oncore_cmd_Ea, sizeof(oncore_cmd_Ea)); 3333 oncore_sendmsg(instance, oncore_cmd_Ha, sizeof(oncore_cmd_Ha)); 3334 } 3335 3336 3337 3338 /* check for a GOOD Almanac, have we got one yet? */ 3339 3340 static void 3341 oncore_check_almanac( 3342 struct instance *instance 3343 ) 3344 { 3345 if (instance->chan == 6) { 3346 instance->rsm.bad_almanac = instance->BEHa[64]&0x1; 3347 instance->rsm.bad_fix = instance->BEHa[64]&0x52; 3348 } else if (instance->chan == 8) { 3349 instance->rsm.bad_almanac = instance->BEHa[72]&0x1; 3350 instance->rsm.bad_fix = instance->BEHa[72]&0x52; 3351 } else if (instance->chan == 12) { 3352 int bits1, bits2, bits3; 3353 3354 bits1 = (instance->BEHa[129]>>5) & 0x7; /* actually Ha */ 3355 bits2 = instance->BEHa[130]; 3356 instance->rsm.bad_almanac = (bits2 & 0x80); 3357 instance->rsm.bad_fix = (bits2 & 0x8) || (bits1 == 0x2); 3358 /* too few sat Bad Geom */ 3359 3360 bits3 = instance->BEHa[141]; /* UTC parameters */ 3361 if (!instance->count5_set && (bits3 & 0xC0)) { 3362 instance->count5 = 4; /* was 2 [Bug 1766] */ 3363 instance->count5_set = 1; 3364 } 3365 #ifdef ONCORE_VERBOSE_CHECK_ALMANAC 3366 oncore_log_f(instance, LOG_DEBUG, 3367 "DEBUG BITS: (%x %x), (%x %x %x), %x %x %x %x %x", 3368 instance->BEHa[129], instance->BEHa[130], 3369 bits1, bits2, bits3, 3370 instance->mode == MODE_0D, 3371 instance->mode == MODE_2D, 3372 instance->mode == MODE_3D, 3373 instance->rsm.bad_almanac, 3374 instance->rsm.bad_fix); 3375 } 3376 #endif 3377 } 3378 } 3379 3380 3381 3382 /* check the antenna for changes (did it get unplugged?) */ 3383 3384 static void 3385 oncore_check_antenna( 3386 struct instance *instance 3387 ) 3388 { 3389 enum antenna_state antenna; /* antenna state */ 3390 3391 if (instance->chan == 12) 3392 antenna = (instance->BEHa[130] & 0x6 ) >> 1; 3393 else 3394 antenna = (instance->BEHa[37] & 0xc0) >> 6; /* prob unset 6, set GT, UT unset VP */ 3395 3396 oncore_antenna_report (instance, antenna); 3397 } 3398 3399 3400 3401 /* 3402 * Check the leap second status once per day. 3403 * 3404 * Note that the ONCORE firmware for the Bj command is wrong at 3405 * least in the VP. 3406 * It starts advertising a LEAP SECOND as soon as the GPS satellite 3407 * data message (page 18, subframe 4) is updated to a date in the 3408 * future, and does not wait for the month that it will occur. 3409 * The event will usually be advertised several months in advance. 3410 * Since there is a one bit flag, there is no way to tell if it is 3411 * this month, or when... 3412 * 3413 * As such, we have the workaround below, of only checking for leap 3414 * seconds with the Bj command in June/December. 3415 * 3416 * The Gj command gives more information, and we can tell in which 3417 * month to apply the correction. 3418 * 3419 * Note that with the VP we COULD read the raw data message, and 3420 * interpret it ourselves, but since this is specific to this receiver 3421 * only, and the above workaround is adequate, we don't bother. 3422 */ 3423 3424 static void 3425 oncore_check_leap_sec( 3426 struct instance *instance 3427 ) 3428 { 3429 oncore_cmd_Bl[2] = 1; /* just to be sure */ 3430 if (instance->Bj_day != instance->BEHa[5]) { /* do this 1/day */ 3431 instance->Bj_day = instance->BEHa[5]; 3432 3433 if (instance->saw_Gj < 0) { /* -1 DONT have Gj use Bj */ 3434 if ((instance->BEHa[4] == 6) || (instance->BEHa[4] == 12)) 3435 oncore_sendmsg(instance, oncore_cmd_Bj, sizeof(oncore_cmd_Bj)); 3436 oncore_sendmsg(instance, oncore_cmd_Bl, sizeof(oncore_cmd_Bl)); 3437 return; 3438 } 3439 3440 if (instance->saw_Gj == 0) /* 0 is dont know if we have Gj */ 3441 instance->count4 = 1; 3442 3443 oncore_sendmsg(instance, oncore_cmd_Gj, sizeof(oncore_cmd_Gj)); 3444 return; 3445 } 3446 3447 /* Gj works for some 6/8 chan UT and the M12 */ 3448 /* if no response from Gj in 5 sec, we try Bj */ 3449 /* which isnt implemented in all the GT/UT either */ 3450 3451 if (instance->count4) { /* delay, waiting for Gj response */ 3452 if (instance->saw_Gj == 1) 3453 instance->count4 = 0; 3454 else if (instance->count4++ > 5) { /* delay, waiting for Gj response */ 3455 instance->saw_Gj = -1; /* didnt see it, will use Bj */ 3456 instance->count4 = 0; 3457 if ((instance->BEHa[4] == 6) || (instance->BEHa[4] == 12)) { 3458 oncore_sendmsg(instance, oncore_cmd_Bj, sizeof(oncore_cmd_Bj)); 3459 oncore_sendmsg(instance, oncore_cmd_Bl, sizeof(oncore_cmd_Bl)); 3460 } 3461 } 3462 } 3463 } 3464 3465 3466 3467 /* check the message checksum, 3468 * buf points to START of message ( @@ ) 3469 * len is length WITH CR/LF. 3470 */ 3471 3472 static int 3473 oncore_checksum_ok( 3474 u_char *buf, 3475 int len 3476 ) 3477 { 3478 int i, j; 3479 3480 j = 0; 3481 for (i = 2; i < len-3; i++) 3482 j ^= buf[i]; 3483 3484 return(j == buf[len-3]); 3485 } 3486 3487 3488 3489 static void 3490 oncore_compute_dH( 3491 struct instance *instance 3492 ) 3493 { 3494 int GPS, MSL; 3495 3496 /* Here calculate dH = GPS - MSL for output message */ 3497 /* also set Altitude Hold mode if GT */ 3498 3499 instance->have_dH = 1; 3500 if (instance->chan == 12) { 3501 GPS = buf_w32(&instance->BEHa[39]); 3502 MSL = buf_w32(&instance->BEHa[43]); 3503 } else { 3504 GPS = buf_w32(&instance->BEHa[23]); 3505 MSL = buf_w32(&instance->BEHa[27]); 3506 } 3507 instance->dH = GPS - MSL; 3508 instance->dH /= 100.; 3509 3510 /* if MSL is not set, the calculation is meaningless */ 3511 3512 if (MSL) /* not set ! */ 3513 oncore_log_f(instance, LOG_INFO, 3514 "dH = (GPS - MSL) = %.2fm", instance->dH); 3515 } 3516 3517 3518 3519 /* 3520 * try loading Almanac from shmem (where it was copied from shmem_old 3521 */ 3522 3523 static void 3524 oncore_load_almanac( 3525 struct instance *instance 3526 ) 3527 { 3528 u_char *cp, Cmd[20]; 3529 int n; 3530 struct timeval tv; 3531 struct tm *tm; 3532 3533 if (!instance->shmem) 3534 return; 3535 3536 #ifndef ONCORE_VERBOSE_LOAD_ALMANAC 3537 for (cp = instance->shmem + 4; (n = 256 * (*(cp-3)) + *(cp-2)); 3538 cp += (n + 3)) { 3539 if (!strncmp((char *) cp, "@@Cb", 4) && 3540 oncore_checksum_ok(cp, 33) && 3541 (*(cp+4) == 4 || *(cp+4) == 5)) { 3542 refclock_fdwrite(instance->peer, instance->ttyfd, 3543 cp, n, "data"); 3544 oncore_print_Cb(instance, cp); 3545 } 3546 } 3547 #else /* ONCORE_VERBOSE_LOAD_ALMANAC follows */ 3548 for (cp = instance->shmem + 4; (n = 256 * (*(cp-3)) + *(cp-2)); 3549 cp += (n+3)) { 3550 oncore_log_f(instance, LOG_DEBUG, "See %c%c%c%c %d", 3551 *(cp), *(cp+1), *(cp+2), *(cp+3), *(cp+4)); 3552 3553 if (!strncmp(cp, "@@Cb", 4)) { 3554 oncore_print_Cb(instance, cp); 3555 if (oncore_checksum_ok(cp, 33)) { 3556 if (*(cp+4) == 4 || *(cp+4) == 5) { 3557 oncore_log(instance, LOG_DEBUG, "GOOD SF"); 3558 write(instance->ttyfd, cp, n); 3559 } else 3560 oncore_log(instance, LOG_DEBUG, "BAD SF"); 3561 } else 3562 oncore_log(instance, LOG_DEBUG, "BAD CHECKSUM"); 3563 } 3564 } 3565 #endif 3566 3567 /* Must load position and time or the Almanac doesn't do us any good */ 3568 3569 if (!instance->posn_set) { /* if we input a posn use it, else from SHMEM */ 3570 oncore_log(instance, LOG_NOTICE, "Loading Posn from SHMEM"); 3571 for (cp=instance->shmem+4; (n = 256*(*(cp-3)) + *(cp-2)); cp+=(n+3)) { 3572 if ((instance->chan == 6 && (!strncmp((char *) cp, "@@Ba", 4) && oncore_checksum_ok(cp, 68))) || 3573 (instance->chan == 8 && (!strncmp((char *) cp, "@@Ea", 4) && oncore_checksum_ok(cp, 76))) || 3574 (instance->chan == 12 && (!strncmp((char *) cp, "@@Ha", 4) && oncore_checksum_ok(cp, 154)))) { 3575 int ii, jj, kk; 3576 3577 instance->posn_set = 1; 3578 ii = buf_w32(cp + 15); 3579 jj = buf_w32(cp + 19); 3580 kk = buf_w32(cp + 23); 3581 #ifdef ONCORE_VERBOSE_LOAD_ALMANAC 3582 oncore_log_f(instance, LOG_DEBUG, 3583 "SHMEM posn = %ld (%d, %d, %d)", 3584 (long)(cp-instance->shmem), 3585 ii, jj, kk); 3586 #endif 3587 if (ii != 0 || jj != 0 || kk != 0) { /* phk asked for this test */ 3588 instance->ss_lat = ii; 3589 instance->ss_long = jj; 3590 instance->ss_ht = kk; 3591 } 3592 } 3593 } 3594 } 3595 oncore_set_posn(instance); 3596 3597 /* and set time to time from Computer clock */ 3598 3599 GETTIMEOFDAY(&tv, 0); 3600 tm = gmtime((const time_t *) &tv.tv_sec); 3601 3602 #ifdef ONCORE_VERBOSE_LOAD_ALMANAC 3603 oncore_log_f(instance, LOG_DEBUG, "DATE %d %d %d, %d %d %d", 3604 1900 + tm->tm_year, tm->tm_mon, tm->tm_mday, 3605 tm->tm_hour, tm->tm_min, tm->tm_sec); 3606 #endif 3607 if (instance->chan == 12) { 3608 memcpy(Cmd, oncore_cmd_Gb, (size_t) sizeof(oncore_cmd_Gb)); 3609 Cmd[-2+4] = tm->tm_mon + 1; 3610 Cmd[-2+5] = tm->tm_mday; 3611 Cmd[-2+6] = (1900+tm->tm_year)/256; 3612 Cmd[-2+7] = (1900+tm->tm_year)%256; 3613 Cmd[-2+8] = tm->tm_hour; 3614 Cmd[-2+9] = tm->tm_min; 3615 Cmd[-2+10] = tm->tm_sec; 3616 Cmd[-2+11] = 0; 3617 Cmd[-2+12] = 0; 3618 Cmd[-2+13] = 0; 3619 oncore_sendmsg(instance, Cmd, sizeof(oncore_cmd_Gb)); 3620 } else { 3621 /* First set GMT offset to zero */ 3622 3623 oncore_sendmsg(instance, oncore_cmd_Ab, sizeof(oncore_cmd_Ab)); 3624 3625 memcpy(Cmd, oncore_cmd_Ac, (size_t) sizeof(oncore_cmd_Ac)); 3626 Cmd[-2+4] = tm->tm_mon + 1; 3627 Cmd[-2+5] = tm->tm_mday; 3628 Cmd[-2+6] = (1900+tm->tm_year)/256; 3629 Cmd[-2+7] = (1900+tm->tm_year)%256; 3630 oncore_sendmsg(instance, Cmd, sizeof(oncore_cmd_Ac)); 3631 3632 memcpy(Cmd, oncore_cmd_Aa, (size_t) sizeof(oncore_cmd_Aa)); 3633 Cmd[-2+4] = tm->tm_hour; 3634 Cmd[-2+5] = tm->tm_min; 3635 Cmd[-2+6] = tm->tm_sec; 3636 oncore_sendmsg(instance, Cmd, sizeof(oncore_cmd_Aa)); 3637 } 3638 3639 oncore_log(instance, LOG_INFO, "Setting Posn and Time after Loading Almanac"); 3640 } 3641 3642 3643 3644 /* Almanac data input */ 3645 3646 static void 3647 oncore_print_Cb( 3648 struct instance *instance, 3649 u_char *cp 3650 ) 3651 { 3652 #ifdef ONCORE_VERBOSE_CB 3653 int ii; 3654 char Msg[160], Msg2[10]; 3655 3656 oncore_log_f(instance, LOG_DEBUG, "DEBUG: See: %c%c%c%c", *(cp), 3657 *(cp+1), *(cp+2), *(cp+3)); 3658 3659 snprintf(Msg, sizeof(Msg), "DEBUG: Cb: [%d,%d]", *(cp+4), 3660 *(cp+5)); 3661 for (ii = 0; ii < 33; ii++) { 3662 snprintf(Msg2, sizeof(Msg2), " %d", *(cp+ii)); 3663 strlcat(Msg, Msg2, sizeof(Msg)); 3664 } 3665 oncore_log(instance, LOG_DEBUG, Msg); 3666 3667 oncore_log_f(instance, LOG_DEBUG, "Debug: Cb: [%d,%d]", *(cp+4), 3668 *(cp+5)); 3669 #endif 3670 } 3671 3672 3673 #if 0 3674 static void 3675 oncore_print_array( 3676 u_char *cp, 3677 int n 3678 ) 3679 { 3680 int jj, i, j, nn; 3681 3682 nn = 0; 3683 printf("\nTOP\n"); 3684 jj = n/16; 3685 for (j=0; j<jj; j++) { 3686 printf("%4d: ", nn); 3687 nn += 16; 3688 for (i=0; i<16; i++) 3689 printf(" %o", *cp++); 3690 printf("\n"); 3691 } 3692 } 3693 #endif 3694 3695 3696 static void 3697 oncore_print_posn( 3698 struct instance *instance 3699 ) 3700 { 3701 char ew, ns; 3702 double xd, xm, xs, yd, ym, ys, hm, hft; 3703 int idx, idy, is, imx, imy; 3704 long lat, lon; 3705 3706 oncore_log(instance, LOG_INFO, "Posn:"); 3707 ew = 'E'; 3708 lon = instance->ss_long; 3709 if (lon < 0) { 3710 ew = 'W'; 3711 lon = -lon; 3712 } 3713 3714 ns = 'N'; 3715 lat = instance->ss_lat; 3716 if (lat < 0) { 3717 ns = 'S'; 3718 lat = -lat; 3719 } 3720 3721 hm = instance->ss_ht/100.; 3722 hft= hm/0.3048; 3723 3724 xd = lat/3600000.; /* lat, lon in int msec arc, ht in cm. */ 3725 yd = lon/3600000.; 3726 oncore_log_f(instance, LOG_INFO, 3727 "Lat = %c %11.7fdeg, Long = %c %11.7fdeg, Alt = %5.2fm (%5.2fft) GPS", 3728 ns, xd, ew, yd, hm, hft); 3729 3730 idx = xd; 3731 idy = yd; 3732 imx = lat%3600000; 3733 imy = lon%3600000; 3734 xm = imx/60000.; 3735 ym = imy/60000.; 3736 oncore_log_f(instance, LOG_INFO, 3737 "Lat = %c %3ddeg %7.4fm, Long = %c %3ddeg %8.5fm, Alt = %7.2fm (%7.2fft) GPS", 3738 ns, idx, xm, ew, idy, ym, hm, hft); 3739 3740 imx = xm; 3741 imy = ym; 3742 is = lat%60000; 3743 xs = is/1000.; 3744 is = lon%60000; 3745 ys = is/1000.; 3746 oncore_log_f(instance, LOG_INFO, 3747 "Lat = %c %3ddeg %2dm %5.2fs, Long = %c %3ddeg %2dm %5.2fs, Alt = %7.2fm (%7.2fft) GPS", 3748 ns, idx, imx, xs, ew, idy, imy, ys, hm, hft); 3749 } 3750 3751 3752 3753 /* 3754 * write message to Oncore. 3755 */ 3756 3757 static void 3758 oncore_sendmsg( 3759 struct instance *instance, 3760 u_char *ptr, 3761 size_t len 3762 ) 3763 { 3764 int fd; 3765 u_char cs = 0; 3766 const struct peer * peer; 3767 3768 fd = instance->ttyfd; 3769 peer = instance->peer; 3770 #ifdef ONCORE_VERBOSE_SENDMSG 3771 if (debug > 4) { 3772 oncore_log_f(instance, LOG_DEBUG, "ONCORE: Send @@%c%c %d", 3773 ptr[0], ptr[1], (int)len); 3774 } 3775 #endif 3776 refclock_fdwrite(peer, fd, "@@", (size_t)2, "data"); 3777 refclock_fdwrite(peer, fd, ptr, len, "data"); 3778 while (len--) 3779 cs ^= *ptr++; 3780 refclock_fdwrite(peer, fd, &cs, (size_t)1, "data"); 3781 refclock_fdwrite(peer, fd, "\r\n", (size_t)2, "data"); 3782 } 3783 3784 3785 3786 static void 3787 oncore_set_posn( 3788 struct instance *instance 3789 ) 3790 { 3791 int mode; 3792 u_char Cmd[20]; 3793 3794 /* Turn OFF position hold, it needs to be off to set position (for some units), 3795 will get set ON in @@Ea later */ 3796 3797 if (instance->chan == 12) 3798 oncore_sendmsg(instance, oncore_cmd_Gd0, sizeof(oncore_cmd_Gd0)); /* (12) */ 3799 else { 3800 oncore_sendmsg(instance, oncore_cmd_At0, sizeof(oncore_cmd_At0)); /* (6/8) */ 3801 oncore_sendmsg(instance, oncore_cmd_Av0, sizeof(oncore_cmd_Av0)); /* (6/8) */ 3802 } 3803 3804 mode = instance->init_type; 3805 3806 if (mode != 0) { /* first set posn hold position */ 3807 memcpy(Cmd, oncore_cmd_As, (size_t) sizeof(oncore_cmd_As)); /* don't modify static variables */ 3808 w32_buf(&Cmd[-2+4], (int) instance->ss_lat); 3809 w32_buf(&Cmd[-2+8], (int) instance->ss_long); 3810 w32_buf(&Cmd[-2+12], (int) instance->ss_ht); 3811 Cmd[-2+16] = 0; 3812 oncore_sendmsg(instance, Cmd, sizeof(oncore_cmd_As)); /* posn hold 3D posn (6/8/12) */ 3813 3814 memcpy(Cmd, oncore_cmd_Au, (size_t) sizeof(oncore_cmd_Au)); 3815 w32_buf(&Cmd[-2+4], (int) instance->ss_ht); 3816 Cmd[-2+8] = 0; 3817 oncore_sendmsg(instance, Cmd, sizeof(oncore_cmd_Au)); /* altitude hold (6/8/12 not UT, M12T) */ 3818 3819 /* next set current position */ 3820 3821 if (instance->chan == 12) { 3822 memcpy(Cmd, oncore_cmd_Ga, (size_t) sizeof(oncore_cmd_Ga)); 3823 w32_buf(&Cmd[-2+4], (int) instance->ss_lat); 3824 w32_buf(&Cmd[-2+8], (int) instance->ss_long); 3825 w32_buf(&Cmd[-2+12],(int) instance->ss_ht); 3826 Cmd[-2+16] = 0; 3827 oncore_sendmsg(instance, Cmd, sizeof(oncore_cmd_Ga)); /* 3d posn (12) */ 3828 } else { 3829 memcpy(Cmd, oncore_cmd_Ad, (size_t) sizeof(oncore_cmd_Ad)); 3830 w32_buf(&Cmd[-2+4], (int) instance->ss_lat); 3831 oncore_sendmsg(instance, Cmd, sizeof(oncore_cmd_Ad)); /* lat (6/8) */ 3832 3833 memcpy(Cmd, oncore_cmd_Ae, (size_t) sizeof(oncore_cmd_Ae)); 3834 w32_buf(&Cmd[-2+4], (int) instance->ss_long); 3835 oncore_sendmsg(instance, Cmd, sizeof(oncore_cmd_Ae)); /* long (6/8) */ 3836 3837 memcpy(Cmd, oncore_cmd_Af, (size_t) sizeof(oncore_cmd_Af)); 3838 w32_buf(&Cmd[-2+4], (int) instance->ss_ht); 3839 Cmd[-2+8] = 0; 3840 oncore_sendmsg(instance, Cmd, sizeof(oncore_cmd_Af)); /* ht (6/8) */ 3841 } 3842 3843 /* Finally, turn on position hold */ 3844 3845 if (instance->chan == 12) 3846 oncore_sendmsg(instance, oncore_cmd_Gd1, sizeof(oncore_cmd_Gd1)); 3847 else 3848 oncore_sendmsg(instance, oncore_cmd_At1, sizeof(oncore_cmd_At1)); 3849 } 3850 } 3851 3852 3853 3854 static void 3855 oncore_set_traim( 3856 struct instance *instance 3857 ) 3858 { 3859 if (instance->traim_in != -1) /* set in Input */ 3860 instance->traim = instance->traim_in; 3861 else 3862 instance->traim = instance->traim_ck; 3863 3864 oncore_log_f(instance, LOG_INFO, "Input says TRAIM = %d", 3865 instance->traim_in); 3866 oncore_log_f(instance, LOG_INFO, "Model # says TRAIM = %d", 3867 instance->traim_id); 3868 oncore_log_f(instance, LOG_INFO, "Testing says TRAIM = %d", 3869 instance->traim_ck); 3870 oncore_log_f(instance, LOG_INFO, "Using TRAIM = %d", 3871 instance->traim); 3872 3873 if (instance->traim_ck == 1 && instance->traim == 0) { 3874 /* if it should be off, and I turned it on during testing, 3875 then turn it off again */ 3876 if (instance->chan == 6) 3877 oncore_sendmsg(instance, oncore_cmd_Bnx, sizeof(oncore_cmd_Bnx)); 3878 else if (instance->chan == 8) 3879 oncore_sendmsg(instance, oncore_cmd_Enx, sizeof(oncore_cmd_Enx)); 3880 else /* chan == 12 */ 3881 oncore_sendmsg(instance, oncore_cmd_Ge0, sizeof(oncore_cmd_Ge0)); 3882 oncore_sendmsg(instance, oncore_cmd_Hn0, sizeof(oncore_cmd_Hn0)); 3883 } 3884 } 3885 3886 3887 3888 /* 3889 * if SHMEM active, every 15s, steal one 'tick' to get 2D or 3D posn. 3890 */ 3891 3892 static void 3893 oncore_shmem_get_3D( 3894 struct instance *instance 3895 ) 3896 { 3897 if (instance->pp->second%15 == 3) { /* start the sequence */ /* by changing mode */ 3898 instance->shmem_reset = 1; 3899 if (instance->chan == 12) { 3900 if (instance->shmem_Posn == 2) 3901 oncore_sendmsg(instance, oncore_cmd_Gd2, sizeof(oncore_cmd_Gd2)); /* 2D */ 3902 else 3903 oncore_sendmsg(instance, oncore_cmd_Gd0, sizeof(oncore_cmd_Gd0)); /* 3D */ 3904 } else { 3905 if (instance->saw_At) { /* out of 0D -> 3D mode */ 3906 oncore_sendmsg(instance, oncore_cmd_At0, sizeof(oncore_cmd_At0)); 3907 if (instance->shmem_Posn == 2) /* 3D -> 2D mode */ 3908 oncore_sendmsg(instance, oncore_cmd_Av1, sizeof(oncore_cmd_Av1)); 3909 } else 3910 oncore_sendmsg(instance, oncore_cmd_Av0, sizeof(oncore_cmd_Av0)); 3911 } 3912 } else if (instance->shmem_reset || (instance->mode != MODE_0D)) { 3913 instance->shmem_reset = 0; 3914 if (instance->chan == 12) 3915 oncore_sendmsg(instance, oncore_cmd_Gd1, sizeof(oncore_cmd_Gd1)); /* 0D */ 3916 else { 3917 if (instance->saw_At) { 3918 if (instance->mode == MODE_2D) /* 2D -> 3D or 0D mode */ 3919 oncore_sendmsg(instance, oncore_cmd_Av0, sizeof(oncore_cmd_Av0)); 3920 oncore_sendmsg(instance, oncore_cmd_At1, sizeof(oncore_cmd_At1)); /* to 0D mode */ 3921 } else 3922 oncore_sendmsg(instance, oncore_cmd_Av1, sizeof(oncore_cmd_Av1)); 3923 } 3924 } 3925 } 3926 3927 3928 3929 /* 3930 * Here we do the Software SiteSurvey. 3931 * We have to average our own position for the Position Hold Mode 3932 * We use Heights from the GPS ellipsoid. 3933 * We check for the END of either HW or SW SiteSurvey. 3934 */ 3935 3936 static void 3937 oncore_ss( 3938 struct instance *instance 3939 ) 3940 { 3941 double lat, lon, ht; 3942 3943 3944 if (instance->site_survey == ONCORE_SS_HW) { 3945 /* 3946 * Check to see if Hardware SiteSurvey has Finished. 3947 */ 3948 3949 if ((instance->chan == 8 && !(instance->BEHa[37] & 0x20)) || 3950 (instance->chan == 12 && !(instance->BEHa[130] & 0x10))) { 3951 oncore_log(instance, LOG_INFO, "Now in 0D mode"); 3952 3953 if (instance->chan == 12) 3954 oncore_sendmsg(instance, oncore_cmd_Gax, sizeof(oncore_cmd_Gax)); 3955 else 3956 oncore_sendmsg(instance, oncore_cmd_Asx, sizeof(oncore_cmd_Asx)); 3957 3958 oncore_log(instance, LOG_NOTICE, "SSstate = ONCORE_SS_DONE"); 3959 instance->site_survey = ONCORE_SS_DONE; 3960 } 3961 } else { 3962 /* 3963 * Must be a Software Site Survey. 3964 */ 3965 3966 if (instance->rsm.bad_fix) /* Not if poor geometry or less than 3 sats */ 3967 return; 3968 3969 if (instance->mode != MODE_3D) /* Use only 3D Fixes */ 3970 return; 3971 3972 instance->ss_lat += buf_w32(&instance->BEHa[15]); 3973 instance->ss_long += buf_w32(&instance->BEHa[19]); 3974 instance->ss_ht += buf_w32(&instance->BEHa[23]); /* GPS ellipsoid */ 3975 instance->ss_count++; 3976 3977 if (instance->ss_count != POS_HOLD_AVERAGE) 3978 return; 3979 3980 instance->ss_lat /= POS_HOLD_AVERAGE; 3981 instance->ss_long /= POS_HOLD_AVERAGE; 3982 instance->ss_ht /= POS_HOLD_AVERAGE; 3983 3984 oncore_log_f(instance, LOG_NOTICE, 3985 "Surveyed posn: lat %.3f (mas) long %.3f (mas) ht %.3f (cm)", 3986 instance->ss_lat, instance->ss_long, 3987 instance->ss_ht); 3988 lat = instance->ss_lat/3600000.; 3989 lon = instance->ss_long/3600000.; 3990 ht = instance->ss_ht/100; 3991 oncore_log_f(instance, LOG_NOTICE, 3992 "Surveyed posn: lat %.7f (deg) long %.7f (deg) ht %.2f (m)", 3993 lat, lon, ht); 3994 3995 oncore_set_posn(instance); 3996 3997 oncore_log(instance, LOG_INFO, "Now in 0D mode"); 3998 3999 oncore_log(instance, LOG_NOTICE, "SSstate = ONCORE_SS_DONE"); 4000 instance->site_survey = ONCORE_SS_DONE; 4001 } 4002 } 4003 4004 4005 4006 static int 4007 oncore_wait_almanac( 4008 struct instance *instance 4009 ) 4010 { 4011 if (instance->rsm.bad_almanac) { 4012 instance->counta++; 4013 if (instance->counta%5 == 0) 4014 oncore_log(instance, LOG_INFO, "Waiting for Almanac"); 4015 4016 /* 4017 * If we get here (first time) then we don't have an almanac in memory. 4018 * Check if we have a SHMEM, and if so try to load whatever is there. 4019 */ 4020 4021 if (!instance->almanac_from_shmem) { 4022 instance->almanac_from_shmem = 1; 4023 oncore_load_almanac(instance); 4024 } 4025 return(1); 4026 } else { /* Here we have the Almanac, we will be starting the @@Bn/@@En/@@Hn 4027 commands, and can finally check for TRAIM. Again, we set a delay 4028 (5sec) and wait for things to settle down */ 4029 4030 if (instance->chan == 6) 4031 oncore_sendmsg(instance, oncore_cmd_Bn, sizeof(oncore_cmd_Bn)); 4032 else if (instance->chan == 8) 4033 oncore_sendmsg(instance, oncore_cmd_En, sizeof(oncore_cmd_En)); 4034 else if (instance->chan == 12) { 4035 oncore_sendmsg(instance, oncore_cmd_Gc, sizeof(oncore_cmd_Gc)); /* 1PPS on, continuous */ 4036 oncore_sendmsg(instance, oncore_cmd_Ge, sizeof(oncore_cmd_Ge)); /* TRAIM on */ 4037 oncore_sendmsg(instance, oncore_cmd_Hn, sizeof(oncore_cmd_Hn)); /* TRAIM status 1/s */ 4038 } 4039 instance->traim_delay = 1; 4040 4041 oncore_log(instance, LOG_NOTICE, "Have now loaded an ALMANAC"); 4042 4043 instance->o_state = ONCORE_RUN; 4044 oncore_log(instance, LOG_NOTICE, "state = ONCORE_RUN"); 4045 } 4046 return(0); 4047 } 4048 4049 4050 static void 4051 oncore_feed_clockproc( 4052 struct instance * instance 4053 ) 4054 { 4055 struct peer * const peer = instance->peer; 4056 struct refclockproc * const pp = instance->pp; 4057 4058 TCivilDate cd; /* calendar date + time */ 4059 TGpsDatum gd; /* GPS datum, remapped into NTP epoch */ 4060 l_fp fp; /* the reference time in NTP format */ 4061 4062 if (pp->year >= 1980) { 4063 /* There are oncore receivers that run in a fixed 4064 * (possibly shifted) GPS era and fold back into that 4065 * era on every GPS week rollover. 4066 * 4067 * We do not trust the date we get and remap to a GPS 4068 * era defined by the GPS base date (derived from the 4069 * build time stamp or a 'tos basedate' config option. 4070 */ 4071 ZERO(fp); /* has a zero to begin with */ 4072 ZERO(cd); /* month == monthday == 0 -> use year+yearday */ 4073 cd.year = pp->year; 4074 cd.yearday = pp->day; 4075 cd.hour = pp->hour; 4076 cd.minute = pp->minute; 4077 cd.second = pp->second; 4078 4079 /* the magic happens in the next line: */ 4080 gd = gpscal_from_calendar(&cd, fp); /* fp should be zero here */ 4081 4082 /* To avoid the trouble the day-of-year calculations in 4083 * 'refclock_process()' can cause we feed the time 4084 * stamps we have now directly. This also saves us two 4085 * full calendar calendar conversion cycles. 4086 */ 4087 fp = ntpfp_from_gpsdatum(&gd); 4088 refclock_process_offset(pp, fp, pp->lastrec, pp->fudgetime1); 4089 } else { 4090 /* This is obviously a bad date/time... */ 4091 refclock_report(peer, CEVNT_BADDATE); 4092 peer->flags &= ~FLAG_PPS; /* problem - clear PPS FLAG */ 4093 return; 4094 } 4095 } 4096 4097 static void 4098 oncore_log ( 4099 struct instance *instance, 4100 int log_level, 4101 const char *msg 4102 ) 4103 { 4104 msyslog(log_level, "ONCORE[%d]: %s", instance->unit, msg); 4105 mprintf_clock_stats(&instance->peer->srcadr, "ONCORE[%d]: %s", 4106 instance->unit, msg); 4107 } 4108 4109 4110 static int 4111 oncore_log_f( 4112 struct instance * instance, 4113 int log_level, 4114 const char * fmt, 4115 ... 4116 ) 4117 { 4118 va_list ap; 4119 int rc; 4120 char msg[512]; 4121 4122 va_start(ap, fmt); 4123 rc = mvsnprintf(msg, sizeof(msg), fmt, ap); 4124 va_end(ap); 4125 oncore_log(instance, log_level, msg); 4126 4127 #ifdef ONCORE_VERBOSE_ONCORE_LOG 4128 instance->max_len = max(strlen(msg), instance->max_len); 4129 instance->max_count++; 4130 if (instance->max_count % 100 == 0) 4131 oncore_log_f(instance, LOG_INFO, 4132 "Max Message Length so far is %d", 4133 instance->max_len); 4134 #endif 4135 return rc; 4136 } 4137 4138 #else 4139 int refclock_oncore_bs; 4140 #endif /* REFCLOCK && CLOCK_ONCORE */ 4141