xref: /freebsd/contrib/ntp/include/mbg_gps166.h (revision 8d20be1e22095c27faf8fe8b2f0d089739cc742e)
1 /*
2  * /src/NTP/REPOSITORY/ntp4-dev/include/mbg_gps166.h,v 4.7 2006/06/22 18:41:43 kardel RELEASE_20060622_A
3  *
4  * mbg_gps166.h,v 4.7 2006/06/22 18:41:43 kardel RELEASE_20060622_A
5  *
6  * $Created: Sun Jul 20 09:20:50 1997 $
7  *
8  * File GPSSERIO.H Copyright (c) by Meinberg Funkuhren (www.meinberg.de)
9  *
10  * Linkage to PARSE:
11  * Copyright (c) 1997-2005 by Frank Kardel <kardel <AT> ntp.org>
12  *
13  * Redistribution and use in source and binary forms, with or without
14  * modification, are permitted provided that the following conditions
15  * are met:
16  * 1. Redistributions of source code must retain the above copyright
17  *    notice, this list of conditions and the following disclaimer.
18  * 2. Redistributions in binary form must reproduce the above copyright
19  *    notice, this list of conditions and the following disclaimer in the
20  *    documentation and/or other materials provided with the distribution.
21  * 3. Neither the name of the author nor the names of its contributors
22  *    may be used to endorse or promote products derived from this software
23  *    without specific prior written permission.
24  *
25  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35  * SUCH DAMAGE.
36  *
37  */
38 #ifndef MBG_GPS166_H
39 #define MBG_GPS166_H
40 
41 
42 /***************************************************************************/
43 /*                                                                         */
44 /*   File:         GPSSERIO.H                    4.1                       */
45 /*                                                                         */
46 /*   Project:      Common C Library                                        */
47 /*                                                                         */
48 /*   Compiler:     Borland C++                                             */
49 /*                                                                         */
50 /*   Author:       M. Burnicki,  Meinberg Funkuhren                        */
51 /*                                                                         */
52 /*                                                                         */
53 /*   Description:                                                          */
54 /*     This file defines structures and codes to be used to access GPS166  */
55 /*     via its serial interface COM0. COM0 should be set to a high baud    */
56 /*     rate, default is 19200.                                             */
57 /*                                                                         */
58 /*     Standard GPS166 serial operation is to send a time string that is   */
59 /*     compatible with Meinberg UA31 or PZF535 DCF77 radio remote clocks.  */
60 /*     That string can be transmitted automatically once per second, once  */
61 /*     per minute or on request per ASCII '?'.                             */
62 /*                                                                         */
63 /*     Parameter setup or parameter readout works using blocks of binary   */
64 /*     data which have to be isolated from the standard string. A block of */
65 /*     data starts with a SOH code (ASCII Start Of Header, 0x01) followed  */
66 /*     by a message header with constant length and a data portion with    */
67 /*     variable length. The first field (cmd) of the message header holds  */
68 /*     the command code rsp. the type of data to be transmitted. The next  */
69 /*     field (len) gives the number of data bytes that are transmitted     */
70 /*     after the header. This number ranges from 0 to sizeof( MSG_DATA ).  */
71 /*     The third field (data_csum) holds a checksum of all data bytes and  */
72 /*     the last field of the header finally holds the checksum of the.     */
73 /*     header.                                                             */
74 /*                                                                         */
75 /***************************************************************************/
76 
77 /* the control codes defined below are to be or'ed with a command/type code */
78 
79 #define GPS_REQACK    0x8000   /* to GPS166: request acknowledge */
80 #define GPS_ACK       0x4000   /* from GPS166: acknowledge a command */
81 #define GPS_NACK      0x2000   /* from GPS166: error receiving command */
82 
83 #define GPS_CTRL_MSK  0xF000   /* masks control code from command */
84 
85 
86 /* The codes below specify commands/types of data to be supplied to GPS166: */
87 
88 /*                            GPS166 auto-message to host            */
89 /*                            �   host request, GPS166 response      */
90 /*                            �   �   host download to GPS166        */
91 /*                            �   �   �                              */
92 enum {  /*                    �   �   �                              */
93   /* system data */
94   GPS_AUTO_ON = 0x000,   /* �   �   � X � enable auto-messages from GPS166 */
95   GPS_AUTO_OFF,          /* �   �   � X � disable auto-messages from GPS166 */
96   GPS_SW_REV,            /* �   � X �   � request software revision */
97   GPS_STAT,              /* �   � X �   � request status of buffered variables */
98   GPS_TIME,              /* � X �   � X � current time or capture or init board time */
99   GPS_POS_XYZ,           /* �   � X � X � current position in ECEF coords */
100   GPS_POS_LLA,           /* �   � X � X � current position in geographic coords */
101   GPS_TZDL,              /* �   � X � X � time zone / daylight saving */
102   GPS_PORT_PARM,         /* �   � X � X � parameters of the serial ports */
103   GPS_SYNTH,             /* �   � X � X � synthesizer's frequency and phase */
104   GPS_ANT_INFO,          /* � X � X �   � time diff after antenna disconnect */
105   GPS_UCAP,              /* � X � X �   � user capture */
106 
107   /* GPS data */
108   GPS_CFGH = 0x100,      /* �   � X � X � SVs' configuration and health codes */
109   GPS_ALM,               /* �   � X � X � one SV's almanac */
110   GPS_EPH,               /* �   � X � X � one SV's ephemeris */
111   GPS_UTC,               /* �   � X � X � UTC correction parameters */
112   GPS_IONO,              /* �   � X � X � ionospheric correction parameters */
113   GPS_ASCII_MSG          /* �   � X �   � the GPS ASCII message */
114 };
115 
116 /*
117  * modelled after GPSDEFS.H Revision 1.5
118  */
119 /***************************************************************************/
120 /*                                                                         */
121 /*   File:         GPSDEFS.H                     4.1          */
122 /*                                                                         */
123 /*   Project:      Common C Library                                        */
124 /*                                                                         */
125 /*   Compiler:     Borland C++                                             */
126 /*                                                                         */
127 /*   Author:       M. Burnicki,  Meinberg Funkuhren                        */
128 /*                                                                         */
129 /*                                                                         */
130 /*   Description:                                                          */
131 /*     General definitions to be used with GPS166                          */
132 /*     GPS166 Rev. 1.23 or above                                           */
133 /*                                                                         */
134 /*   Modifications: see file GPSLIB.TXT                                    */
135 /*                                                                         */
136 /***************************************************************************/
137 #define _GPSDEFS_H
138 /* the type of various checksums */
139 
140 #ifndef _CSUM_DEFINED
141   typedef unsigned short CSUM;
142 #  define _CSUM_DEFINED
143 #endif
144 
145 /* the message header */
146 
147 typedef struct {
148   unsigned short gps_cmd;
149   unsigned short gps_len;
150   unsigned short gps_data_csum;
151   unsigned short gps_hdr_csum;
152 } GPS_MSG_HDR;
153 
154 /* a struct used to hold the software revision information */
155 
156 typedef struct {
157   unsigned short code;       /* e.g. 0x0120 means rev. 1.20 */
158   unsigned char name[17];     /* used to identify customized versions */
159 } SW_REV;
160 
161 /* GPS ASCII message */
162 
163 typedef struct {
164   CSUM csum;       /* checksum of the remaining bytes */
165   short valid;     /* flag data are valid */
166   char s[23];      /* 22 chars GPS ASCII message plus trailing zero */
167 } ASCII_MSG;
168 
169 #define MIN_SVNO         1                  /* min. SV number */
170 #define MAX_SVNO        32                  /* max. SV number */
171 #define N_SVNO ( MAX_SVNO - MIN_SVNO + 1)   /* number of possibly active SVs */
172 
173 
174 typedef short          SVNO;     /* the number of a SV */
175 typedef unsigned short HEALTH;  /* a SV's health code */
176 typedef unsigned short CFG;     /* a SV's configuration code */
177 typedef unsigned short IOD;     /* Issue-Of-Data code */
178 
179 /* Date and time referred to the linear time scale defined by GPS. */
180 /* GPS time is defined by the number of weeks since midnight from */
181 /* January 5, 1980 to January 6, 1980 plus the number of seconds of */
182 /* the current week plus fractions of a second. GPS time differs from */
183 /* UTC because UTC is corrected with leap seconds while GPS time scale */
184 /* is continuous. */
185 
186 typedef struct {
187   unsigned short wn;     /* the week number since GPS has been installed */
188   unsigned long sec;     /* the second of that week */
189   unsigned long tick;    /* fractions of a second; scale: 1E-7 */
190 } T_GPS;
191 
192 
193 /* Local date and time computed from GPS time. The current number */
194 /* of leap seconds have to be added to get UTC from GPS time. */
195 /* Additional corrections could have been made according to the */
196 /* time zone/daylight saving parameters (TZDL, see below) defined */
197 /* by the user. The status field can be checked to see which corrections */
198 /* have been applied. */
199 
200 #ifndef _TM_DEFINED
201   typedef struct {
202     short year;          /* 0..9999 */
203     char month;          /* 1..12 */
204     char mday;           /* 1..31 */
205     short yday;          /* 1..366 */
206     char wday;           /* 0..6 == Sun..Sat */
207     char hour;           /* 0..23 */
208     char minute;         /* 0..59 */
209     char second;         /* 0..59 */
210     long frac;           /* fractions of a second, scale 1E-7 */
211     long offs_from_utc;  /* local time's offset from UTC */
212     unsigned short status;       /* flags */
213   } TM;
214 
215   /* status flags used with conversion from GPS time to local time */
216 
217 #  define TM_UTC        0x01   /* UTC correction has been made */
218 #  define TM_LOCAL      0x02   /* UTC has been converted to local time */
219 #  define TM_DL_ANN     0x04   /* state of daylight saving is going to change */
220 #  define TM_DL_ENB     0x08   /* daylight saving is enabled */
221 #  define TM_LS_ANN     0x10   /* leap second will be inserted */
222 #  define TM_LS_ENB     0x20   /* current second is leap second */
223 
224 #  define _TM_DEFINED
225 #endif
226 
227 
228 /* the status flags below are defined starting with rev. 1.32 */
229 
230 #define TM_ANT_DISCONN  0x1000  /* antenna currently disconnected */
231 #define TM_SYN_FLAG     0x2000  /* TIME_SYN output is low */
232 #define TM_NO_SYNC      0x4000  /* not sync'ed after reset */
233 #define TM_NO_POS       0x8000  /* position not computed after reset, */
234                                 /*   LOCK LED off */
235 
236 /* a struct used to transmit information on date and time */
237 
238 typedef struct {
239   short channel;        /* -1: the current time; 0, 1: capture 0, 1 */
240   T_GPS t;              /* time in GPS format */
241   TM tm;                /* that time converted to local time */
242 } TTM;
243 
244 
245 
246 /* Two types of variables used to store a position. Type XYZ is */
247 /* used with a position in earth centered, earth fixed (ECEF) */
248 /* coordinates whereas type LLA holds such a position converted */
249 /* to geographic coordinates as defined by WGS84 (World Geodetic */
250 /* System from 1984). */
251 
252 #ifndef _XYZ_DEFINED
253   /* sequence and number of components of a cartesian position */
254   enum { XP, YP, ZP, N_XYZ };
255 
256   /* a type of array holding a cartesian position */
257   typedef l_fp XYZ[N_XYZ];      /* values are in [m] */
258 
259 #  define _XYZ_DEFINED
260 #endif
261 
262 
263 #ifndef _LLA_DEFINED
264   /* sequence and number of components of a geographic position */
265   enum { LAT, LON, ALT, N_LLA };  /* latitude, longitude, altitude */
266 
267   /* a type of array holding a geographic position */
268   typedef l_fp LLA[N_LLA];      /* lon, lat in [rad], alt in [m] */
269 
270 #  define _LLA_DEFINED
271 #endif
272 
273 /* Synthesizer parameters. Synthesizer frequency is expressed as a */
274 /* four digit decimal number (freq) to be multiplied by 0.1 Hz and an */
275 /* base 10 exponent (range). If the effective frequency is less than */
276 /* 10 kHz its phase is synchronized corresponding to the variable phase. */
277 /* Phase may be in a range from -360� to +360� with a resolution of 0.1�, */
278 /* so the resulting numbers to be stored are in a range of -3600 to +3600. */
279 
280 /* Example: */
281 /* Assume the value of freq is 2345 (decimal) and the value of phase is 900. */
282 /* If range == 0 the effective frequency is 234.5 Hz with a phase of +90�. */
283 /* If range == 1 the synthesizer will generate a 2345 Hz output frequency */
284 /* and so on. */
285 
286 /* Limitations: */
287 /* If freq == 0 the synthesizer is disabled. If range == 0 the least */
288 /* significant digit of freq is limited to 0, 3, 5 or 6. The resulting */
289 /* frequency is shown in the examples below: */
290 /*     freq == 1230  -->  123.0 Hz */
291 /*     freq == 1233  -->  123 1/3 Hz (real 1/3 Hz, NOT 123.3 Hz) */
292 /*     freq == 1235  -->  123.5 Hz */
293 /*     freq == 1236  -->  123 2/3 Hz (real 2/3 Hz, NOT 123.6 Hz) */
294 
295 /* If range == MAX_RANGE the value of freq must not exceed 1200, so the */
296 /* output frequency is limited to 12 MHz. */
297 
298 /* Phase will be ignored if the resulting frequency is greater or equal */
299 /* to 10 kHz. */
300 
301 #define MAX_SYNTH_FREQ   1200    /* if range == MAX_SYNTH_RANGE */
302 #define MIN_SYNTH_RANGE     0
303 #define MAX_SYNTH_RANGE     5
304 #define MAX_SYNTH_PHASE  3600
305 
306 typedef struct {
307   short freq;      /* four digits used; scale: 0.1; e.g. 1234 -> 123.4 Hz */
308   short range;     /* scale factor for freq; 0..MAX_SYNTH_RANGE */
309   short phase;     /* -MAX_SYNTH_PHASE..+MAX_SYNTH_PHASE; >0 -> pulses later */
310 } SYNTH;
311 
312 
313 
314 /* Time zone/daylight saving parameters. */
315 
316 /* the name of a time zone, 5 characters plus trailing zero */
317 typedef char TZ_NAME[6];
318 
319 typedef struct {
320   long offs;         /* offset from UTC to local time [sec] */
321   long offs_dl;      /* additional offset if daylight saving enabled [sec] */
322   TM tm_on;          /* date/time when daylight saving starts */
323   TM tm_off;         /* date/time when daylight saving ends */
324   TZ_NAME name[2];   /* names without and with daylight saving enabled */
325 } TZDL;
326 
327 /* The constant below is defined beginning with software rev. 1.29. */
328 /* If the year in tzdl.tmon and tzdl.tm_off is or'ed with that constant, */
329 /* the receiver automatically generates daylight saving year by year. */
330 /* See GPSLIB.TXT for more information. */
331 
332 #define DL_AUTO_FLAG  0x8000
333 
334 /* Example: */
335 /* for automatic daylight saving enable/disable in Central Europe, */
336 /* the variables are to be set as shown below: */
337 /*   offs = 3600L           one hour from UTC */
338 /*   offs_dl = 3600L        one additional hour if daylight saving enabled */
339 /*   tm_on = first Sunday from March 25, 02:00:00h ( year |= DL_AUTO_FLAG ) */
340 /*   tm_off = first Sunday from Sept 24, 03:00:00h ( year |= DL_AUTO_FLAG ) */
341 /*   name[0] == "MEZ  "     name if daylight saving not enabled */
342 /*   name[1] == "MESZ "     name if daylight saving is enabled */
343 
344 
345 
346 
347 /* the structure below was defined in rev. 1.31. It reflects the status */
348 /* of the antenna, the times of last disconnect/reconnect and the boards */
349 /* clock offset after the phase of disconnection. */
350 
351 typedef struct {
352   short status;    /* current status of antenna */
353   TM tm_disconn;   /* time of antenna disconnect */
354   TM tm_reconn;    /* time of antenna reconnect */
355   long delta_t;    /* clock offset at reconnect time, units: TICKS_PER_SEC */
356 } ANT_INFO;
357 
358 
359 /* the status field may be set to one of the values below: */
360 
361 enum {
362   ANT_INVALID,   /* struct not set yet because ant. has not been disconn. */
363   ANT_DISCONN,   /* ant. now disconn., tm_reconn and delta_t not set */
364   ANT_RECONN     /* ant. has been disconn. and reconn., all fields valid */
365 };
366 
367 
368 /* Summary of configuration and health data of all SVs. */
369 
370 typedef struct {
371   CSUM csum;               /* checksum of the remaining bytes */
372   short valid;             /* flag data are valid */
373 
374   T_GPS tot_51;            /* time of transmission, page 51 */
375   T_GPS tot_63;            /* time of transmission, page 63 */
376   T_GPS t0a;               /* complete reference time almanac */
377 
378   CFG cfg[N_SVNO];         /* SV configuration from page 63 */
379   HEALTH health[N_SVNO];   /* SV health from pages 51, 63 */
380 } CFGH;
381 
382 
383 
384 /* UTC correction parameters */
385 
386 typedef struct {
387   CSUM csum;       /*    checksum of the remaining bytes                  */
388   short valid;     /*    flag data are valid                              */
389 
390   T_GPS t0t;       /*    Reference Time UTC Parameters              [sec] */
391   l_fp A0;         /*  � Clock Correction Coefficient 0             [sec] */
392   l_fp A1;         /*  � Clock Correction Coefficient 1         [sec/sec] */
393 
394   ushort WNlsf;    /*  week number of nearest leap second                 */
395   short DNt;       /*  the day number at the end of which LS is inserted  */
396   char delta_tls;  /*                                                     */
397   char delta_tlsf; /*                                                     */
398 
399 } UTC;
400 
401 /* a struct used to hold the settings of a serial port */
402 
403 #ifndef _COM_PARM_DEFINED
404   typedef long BAUD_RATE;
405 
406   /* indices used to identify a parameter in the framing string */
407   enum { F_DBITS, F_PRTY, F_STBITS };
408 
409   /* types of handshake */
410   enum { HS_NONE, HS_XONXOFF, HS_RTSCTS };
411 
412   typedef struct {
413     BAUD_RATE baud_rate;    /* e.g. 19200L */
414     char framing[4];        /* e.g. "8N1" */
415     short handshake;        /* a numeric value, only HS_NONE supported yet */
416   } COM_PARM;
417 
418 #define _COM_PARM_DEFINED
419 #endif
420 
421 
422 
423 /* the codes below define what has to comes out of the serial ports */
424 
425 enum { STR_ON_REQ, STR_PER_SEC,
426        STR_PER_MIN, N_STR_MODE_0,      /* COM0 and COM1 */
427        STR_UCAP = N_STR_MODE_0,
428        STR_UCAP_REQ, N_STR_MODE_1      /* COM1 only */
429      };
430 
431 
432 #define N_COM   2  /* the number of serial ports */
433 
434 /* the structure used to store the modes of both serial ports */
435 
436 typedef struct {
437   COM_PARM com[N_COM];    /* COM0 and COM1 settings */
438   u_char mode[N_COM];      /* COM0 and COM1 output mode */
439 } PORT_PARM;
440 
441 /* Ephemeris parameters of one specific SV. Needed to compute the position */
442 /* of a satellite at a given time with high precision. Valid for an */
443 /* interval of 4 to 6 hours from start of transmission. */
444 
445 typedef struct {
446   CSUM csum;       /*    checksum of the remaining bytes                  */
447   short valid;     /*    flag data are valid                              */
448 
449   HEALTH health;   /*    health indication of transmitting SV      [---]  */
450   IOD IODC;        /*    Issue Of Data, Clock                             */
451   IOD IODE2;       /*    Issue of Data, Ephemeris (Subframe 2)            */
452   IOD IODE3;       /*    Issue of Data, Ephemeris (Subframe 3)            */
453   T_GPS tt;        /*    time of transmission                             */
454   T_GPS t0c;       /*    Reference Time Clock                      [---]  */
455   T_GPS t0e;       /*    Reference Time Ephemeris                  [---]  */
456 
457   l_fp   sqrt_A;   /*    Square Root of semi-major Axis        [sqrt(m)]  */
458   l_fp   e;        /*    Eccentricity                              [---]  */
459   l_fp   M0;       /*  � Mean Anomaly at Ref. Time                 [rad]  */
460   l_fp   omega;    /*  � Argument of Perigee                       [rad]  */
461   l_fp   OMEGA0;   /*  � Longit. of Asc. Node of orbit plane       [rad]  */
462   l_fp   OMEGADOT; /*  � Rate of Right Ascension               [rad/sec]  */
463   l_fp   deltan;   /*  � Mean Motion Diff. from computed value [rad/sec]  */
464   l_fp   i0;       /*  � Inclination Angle                         [rad]  */
465   l_fp   idot;     /*  � Rate of Inclination Angle             [rad/sec]  */
466   l_fp   crc;      /*  � Cosine Corr. Term to Orbit Radius           [m]  */
467   l_fp   crs;      /*  � Sine Corr. Term to Orbit Radius             [m]  */
468   l_fp   cuc;      /*  � Cosine Corr. Term to Arg. of Latitude     [rad]  */
469   l_fp   cus;      /*  � Sine Corr. Term to Arg. of Latitude       [rad]  */
470   l_fp   cic;      /*  � Cosine Corr. Term to Inclination Angle    [rad]  */
471   l_fp   cis;      /*  � Sine Corr. Term to Inclination Angle      [rad]  */
472 
473   l_fp   af0;      /*  � Clock Correction Coefficient 0            [sec]  */
474   l_fp   af1;      /*  � Clock Correction Coefficient 1        [sec/sec]  */
475   l_fp   af2;      /*  � Clock Correction Coefficient 2       [sec/sec�]  */
476   l_fp   tgd;      /*  � estimated group delay differential        [sec]  */
477 
478   u_short URA;      /*    predicted User Range Accuracy                    */
479 
480   u_char L2code;    /*    code on L2 channel                         [---] */
481   u_char L2flag;    /*    L2 P data flag                             [---] */
482 
483 } EPH;
484 
485 /* Almanac parameters of one specific SV. A reduced precision set of */
486 /* parameters used to check if a satellite is in view at a given time. */
487 /* Valid for an interval of more than 7 days from start of transmission. */
488 
489 typedef struct {
490   CSUM csum;       /*    checksum of the remaining bytes                  */
491   short valid;     /*    flag data are valid                              */
492 
493   HEALTH health;   /*                                               [---] */
494   T_GPS t0a;       /*    Reference Time Almanac                     [sec] */
495 
496   l_fp   sqrt_A;   /*    Square Root of semi-major Axis         [sqrt(m)] */
497   l_fp   e;        /*    Eccentricity                               [---] */
498 
499   l_fp   M0;       /*  � Mean Anomaly at Ref. Time                  [rad] */
500   l_fp   omega;    /*  � Argument of Perigee                        [rad] */
501   l_fp   OMEGA0;   /*  � Longit. of Asc. Node of orbit plane        [rad] */
502   l_fp   OMEGADOT; /*  � Rate of Right Ascension                [rad/sec] */
503   l_fp   deltai;   /*  �                                            [rad] */
504   l_fp   af0;      /*  � Clock Correction Coefficient 0             [sec] */
505   l_fp   af1;      /*  � Clock Correction Coefficient 1         [sec/sec] */
506 } ALM;
507 
508 
509 /* ionospheric correction parameters */
510 
511 typedef struct {
512   CSUM csum;       /*    checksum of the remaining bytes                  */
513   short valid;     /*    flag data are valid                              */
514 
515   l_fp   alpha_0;  /*    Ionosph. Corr. Coeff. Alpha 0              [sec] */
516   l_fp   alpha_1;  /*    Ionosph. Corr. Coeff. Alpha 1          [sec/deg] */
517   l_fp   alpha_2;  /*    Ionosph. Corr. Coeff. Alpha 2        [sec/deg^2] */
518   l_fp   alpha_3;  /*    Ionosph. Corr. Coeff. Alpha 3        [sec/deg^3] */
519 
520   l_fp   beta_0;   /*    Ionosph. Corr. Coeff. Beta 0               [sec] */
521   l_fp   beta_1;   /*    Ionosph. Corr. Coeff. Beta 1           [sec/deg] */
522   l_fp   beta_2;   /*    Ionosph. Corr. Coeff. Beta 2         [sec/deg^2] */
523   l_fp   beta_3;   /*    Ionosph. Corr. Coeff. Beta 3         [sec/deg^3] */
524 
525 } IONO;
526 
527 void mbg_tm_str P((char **, TM *, int));
528 void mbg_tgps_str P((char **, T_GPS *, int));
529 void get_mbg_header P((unsigned char **, GPS_MSG_HDR *));
530 void put_mbg_header P((unsigned char **, GPS_MSG_HDR *));
531 void get_mbg_sw_rev P((unsigned char **, SW_REV *));
532 void get_mbg_ascii_msg P((unsigned char **, ASCII_MSG *));
533 void get_mbg_svno P((unsigned char **, SVNO *));
534 void get_mbg_health P((unsigned char **, HEALTH *));
535 void get_mbg_cfg P((unsigned char **, CFG *));
536 void get_mbg_tgps P((unsigned char **, T_GPS *));
537 void get_mbg_tm P((unsigned char **, TM *));
538 void get_mbg_ttm P((unsigned char **, TTM *));
539 void get_mbg_synth P((unsigned char **, SYNTH *));
540 void get_mbg_tzdl P((unsigned char **, TZDL *));
541 void get_mbg_antinfo P((unsigned char **, ANT_INFO *));
542 void get_mbg_cfgh P((unsigned char **, CFGH *));
543 void get_mbg_utc P((unsigned char **, UTC *));
544 void get_mbg_lla P((unsigned char **, LLA));
545 void get_mbg_xyz P((unsigned char **, XYZ));
546 void get_mbg_portparam P((unsigned char **, PORT_PARM *));
547 void get_mbg_eph P((unsigned char **, EPH *));
548 void get_mbg_alm P((unsigned char **, ALM *));
549 void get_mbg_iono P((unsigned char **, IONO *));
550 
551 unsigned long mbg_csum P((unsigned char *, unsigned int));
552 
553 #endif
554 /*
555  * History:
556  *
557  * mbg_gps166.h,v
558  * Revision 4.7  2006/06/22 18:41:43  kardel
559  * clean up signedness (gcc 4)
560  *
561  * Revision 4.6  2005/10/07 22:11:56  kardel
562  * bounded buffer implementation
563  *
564  * Revision 4.5.2.1  2005/09/25 10:23:48  kardel
565  * support bounded buffers
566  *
567  * Revision 4.5  2005/06/25 10:58:45  kardel
568  * add missing log keywords
569  *
570  * Revision 4.1  1998/06/12 15:07:30  kardel
571  * fixed prototyping
572  *
573  * Revision 4.0  1998/04/10 19:50:42  kardel
574  * Start 4.0 release version numbering
575  *
576  * Revision 1.1  1998/04/10 19:27:34  kardel
577  * initial NTP VERSION 4 integration of PARSE with GPS166 binary support
578  *
579  * Revision 1.1  1997/10/06 20:55:38  kardel
580  * new parse structure
581  *
582  */
583