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