Annotation of embedaddon/ntp/include/mbg_gps166.h, revision 1.1.1.1

1.1       misho       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: /*                            þ   host request, GPS166 response      */
                     90: /*                            þ   þ   host download to GPS166        */
                     91: /*                            þ   þ   þ                              */
                     92: enum {  /*                    þ   þ   þ                              */
                     93:   /* system data */
                     94:   GPS_AUTO_ON = 0x000,   /* þ   þ   þ X þ enable auto-messages from GPS166 */
                     95:   GPS_AUTO_OFF,          /* þ   þ   þ X þ disable auto-messages from GPS166 */
                     96:   GPS_SW_REV,            /* þ   þ X þ   þ request software revision */
                     97:   GPS_STAT,              /* þ   þ X þ   þ request status of buffered variables */
                     98:   GPS_TIME,              /* þ X þ   þ X þ current time or capture or init board time */
                     99:   GPS_POS_XYZ,           /* þ   þ X þ X þ current position in ECEF coords */
                    100:   GPS_POS_LLA,           /* þ   þ X þ X þ current position in geographic coords */
                    101:   GPS_TZDL,              /* þ   þ X þ X þ time zone / daylight saving */
                    102:   GPS_PORT_PARM,         /* þ   þ X þ X þ parameters of the serial ports */
                    103:   GPS_SYNTH,             /* þ   þ X þ X þ synthesizer's frequency and phase */
                    104:   GPS_ANT_INFO,          /* þ X þ X þ   þ time diff after antenna disconnect */
                    105:   GPS_UCAP,              /* þ X þ X þ   þ user capture */
                    106: 
                    107:   /* GPS data */
                    108:   GPS_CFGH = 0x100,      /* þ   þ X þ X þ SVs' configuration and health codes */
                    109:   GPS_ALM,               /* þ   þ X þ X þ one SV's almanac */
                    110:   GPS_EPH,               /* þ   þ X þ X þ one SV's ephemeris */
                    111:   GPS_UTC,               /* þ   þ X þ X þ UTC correction parameters */
                    112:   GPS_IONO,              /* þ   þ X þ X þ ionospheric correction parameters */
                    113:   GPS_ASCII_MSG          /* þ   þ X þ   þ 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:   u_short 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/sec²]  */
                    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 (char **, TM *, int);
                    528: void mbg_tgps_str (char **, T_GPS *, int);
                    529: void get_mbg_header (unsigned char **, GPS_MSG_HDR *);
                    530: void put_mbg_header (unsigned char **, GPS_MSG_HDR *);
                    531: void get_mbg_sw_rev (unsigned char **, SW_REV *);
                    532: void get_mbg_ascii_msg (unsigned char **, ASCII_MSG *);
                    533: void get_mbg_svno (unsigned char **, SVNO *);
                    534: void get_mbg_health (unsigned char **, HEALTH *);
                    535: void get_mbg_cfg (unsigned char **, CFG *);
                    536: void get_mbg_tgps (unsigned char **, T_GPS *);
                    537: void get_mbg_tm (unsigned char **, TM *);
                    538: void get_mbg_ttm (unsigned char **, TTM *);
                    539: void get_mbg_synth (unsigned char **, SYNTH *);
                    540: void get_mbg_tzdl (unsigned char **, TZDL *);
                    541: void get_mbg_antinfo (unsigned char **, ANT_INFO *);
                    542: void get_mbg_cfgh (unsigned char **, CFGH *);
                    543: void get_mbg_utc (unsigned char **, UTC *);
                    544: void get_mbg_lla (unsigned char **, LLA);
                    545: void get_mbg_xyz (unsigned char **, XYZ);
                    546: void get_mbg_portparam (unsigned char **, PORT_PARM *);
                    547: void get_mbg_eph (unsigned char **, EPH *);
                    548: void get_mbg_alm (unsigned char **, ALM *);
                    549: void get_mbg_iono (unsigned char **, IONO *);
                    550: 
                    551: unsigned long mbg_csum (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:  */

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