data_mbg.c

网络时间协议NTP 源码 版本v4.2.0b 该源码用于linux平台下

/*
 * /src/NTP/REPOSITORY/ntp4-dev/libparse/data_mbg.c,v 4.7 2005/10/07 22:11:10 kardel RELEASE_20051008_A
 *
 * data_mbg.c,v 4.7 2005/10/07 22:11:10 kardel RELEASE_20051008_A
 *
 * $Created: Sun Jul 20 12:08:14 1997 $
 *
 * Copyright (c) 1997-2005 by Frank Kardel <kardel <AT> ntp.org>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the author nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 */

#ifdef PARSESTREAM
#define NEED_BOPS
#include "ntp_string.h"
#else
#include <stdio.h>
#endif
#include "ntp_types.h"
#include "ntp_stdlib.h"
#include "ntp_fp.h"
#include "mbg_gps166.h"
#include "binio.h"
#include "ieee754io.h"

static void get_mbg_tzname P((unsigned char **, char *));
static void mbg_time_status_str P((unsigned char **, unsigned int, int));

#if 0				/* no actual floats on Meinberg binary interface */
static offsets_t mbg_float  = { 1, 0, 3, 2, 0, 0, 0, 0 }; /* byte order for meinberg floats */
#endif
static offsets_t mbg_double = { 1, 0, 3, 2, 5, 4, 7, 6 }; /* byte order for meinberg doubles */
static int32   rad2deg_i = 57;
static u_int32 rad2deg_f = 0x4BB834C7; /* 57.2957795131 == 180/PI */

void
put_mbg_header(
	unsigned char **bufpp,
	GPS_MSG_HDR *headerp
	)
{
  put_lsb_short(bufpp, headerp->gps_cmd);
  put_lsb_short(bufpp, headerp->gps_len);
  put_lsb_short(bufpp, headerp->gps_data_csum);
  put_lsb_short(bufpp, headerp->gps_hdr_csum);
}

void
get_mbg_sw_rev(
	unsigned char **bufpp,
	SW_REV *sw_revp
	)
{
  sw_revp->code = get_lsb_short(bufpp);
  memcpy(sw_revp->name, *bufpp, sizeof(sw_revp->name));
  *bufpp += sizeof(sw_revp->name);
}

void
get_mbg_ascii_msg(
	unsigned char **bufpp,
	ASCII_MSG *ascii_msgp
	)
{
  ascii_msgp->csum  = get_lsb_short(bufpp);
  ascii_msgp->valid = get_lsb_short(bufpp);
  memcpy(ascii_msgp->s, *bufpp, sizeof(ascii_msgp->s));
  *bufpp += sizeof(ascii_msgp->s);
}

void
get_mbg_svno(
	unsigned char **bufpp,
	SVNO *svnop
	)
{
  *svnop = get_lsb_short(bufpp);
}

void
get_mbg_health(
	unsigned char **bufpp,
	HEALTH *healthp
	)
{
  *healthp = get_lsb_short(bufpp);
}

void
get_mbg_cfg(
	unsigned char **bufpp,
	CFG *cfgp
	)
{
  *cfgp = get_lsb_short(bufpp);
}

void
get_mbg_tgps(
	unsigned char **bufpp,
	T_GPS *tgpsp
	)
{
  tgpsp->wn = get_lsb_short(bufpp);
  tgpsp->sec = get_lsb_long(bufpp);
  tgpsp->tick = get_lsb_long(bufpp);
}

void
get_mbg_tm(
	unsigned char **buffpp,
	TM *tmp
	)
{
  tmp->year = get_lsb_short(buffpp);
  tmp->month = *(*buffpp)++;
  tmp->mday  = *(*buffpp)++;
  tmp->yday  = get_lsb_short(buffpp);
  tmp->wday  = *(*buffpp)++;
  tmp->hour  = *(*buffpp)++;
  tmp->minute = *(*buffpp)++;
  tmp->second = *(*buffpp)++;
  tmp->frac  = get_lsb_long(buffpp);
  tmp->offs_from_utc = get_lsb_long(buffpp);
  tmp->status= get_lsb_short(buffpp);
}

void
get_mbg_ttm(
	unsigned char **buffpp,
	TTM *ttmp
	)
{
  ttmp->channel = get_lsb_short(buffpp);
  get_mbg_tgps(buffpp, &ttmp->t);
  get_mbg_tm(buffpp, &ttmp->tm);
}

void
get_mbg_synth(
	unsigned char **buffpp,
	SYNTH *synthp
	)
{
  synthp->freq  = get_lsb_short(buffpp);
  synthp->range = get_lsb_short(buffpp);
  synthp->phase = get_lsb_short(buffpp);
}

static void
get_mbg_tzname(
	unsigned char **buffpp,
	char *tznamep
	)
{
  strncpy(tznamep, (char *)*buffpp, sizeof(TZ_NAME));
  *buffpp += sizeof(TZ_NAME);
}

void
get_mbg_tzdl(
	unsigned char **buffpp,
	TZDL *tzdlp
	)
{
  tzdlp->offs = get_lsb_long(buffpp);
  tzdlp->offs_dl = get_lsb_long(buffpp);
  get_mbg_tm(buffpp, &tzdlp->tm_on);
  get_mbg_tm(buffpp, &tzdlp->tm_off);
  get_mbg_tzname(buffpp, (char *)tzdlp->name[0]);
  get_mbg_tzname(buffpp, (char *)tzdlp->name[1]);
}

void
get_mbg_antinfo(
	unsigned char **buffpp,
	ANT_INFO *antinfop
	)
{
  antinfop->status = get_lsb_short(buffpp);
  get_mbg_tm(buffpp, &antinfop->tm_disconn);
  get_mbg_tm(buffpp, &antinfop->tm_reconn);
  antinfop->delta_t = get_lsb_long(buffpp);
}

static void
mbg_time_status_str(
	unsigned char **buffpp,
	unsigned int status,
	int size
	)
{
	static struct state
	{
		int         flag;		/* bit flag */
		const char *string;	/* bit name */
	} states[] =
		  {
			  { TM_UTC,    "UTC CORR" },
			  { TM_LOCAL,  "LOCAL TIME" },
			  { TM_DL_ANN, "DST WARN" },
			  { TM_DL_ENB, "DST" },
			  { TM_LS_ANN, "LEAP WARN" },
			  { TM_LS_ENB, "LEAP SEC" },
			  { 0, "" }
		  };

	if (status)
	{
		unsigned char *start, *p;
		struct state *s;
	
		start = p = *buffpp;

		for (s = states; s->flag; s++)
		{
			if (s->flag & status)
			{
				if (p != *buffpp)
				{
					strncpy(p, ", ", size - (p - start));
					p += 2;
				}
				strncpy((char *)p, s->string, size - (p - start));
				p += strlen((char *)p);
			}
		}
		*buffpp = p;
	}
}
      
void
mbg_tm_str(
	unsigned char **buffpp,
	TM *tmp,
	int size
	)
{
	unsigned char *s = *buffpp;

	snprintf((char *)*buffpp, size, "%04d-%02d-%02d %02d:%02d:%02d.%07ld (%c%02d%02d) ",
		 tmp->year, tmp->month, tmp->mday,
		 tmp->hour, tmp->minute, tmp->second, tmp->frac,
		 (tmp->offs_from_utc < 0) ? '-' : '+',
		 abs(tmp->offs_from_utc) / 3600,
		 (abs(tmp->offs_from_utc) / 60) % 60);
	*buffpp += strlen((char *)*buffpp);

	mbg_time_status_str(buffpp, tmp->status, size - (*buffpp - s));
}

void
mbg_tgps_str(
	unsigned char **buffpp,
	T_GPS *tgpsp,
	int size
	)
{
	snprintf((char *)*buffpp, size, "week %d + %ld days + %ld.%07ld sec",
		 tgpsp->wn, tgpsp->sec / 86400,
		 tgpsp->sec % 86400, tgpsp->tick);
	*buffpp += strlen((char *)*buffpp);
}

void
get_mbg_cfgh(
	unsigned char **buffpp,
	CFGH *cfghp
	)
{
  int i;
  
  cfghp->csum = get_lsb_short(buffpp);
  cfghp->valid = get_lsb_short(buffpp);
  get_mbg_tgps(buffpp, &cfghp->tot_51);
  get_mbg_tgps(buffpp, &cfghp->tot_63);
  get_mbg_tgps(buffpp, &cfghp->t0a);

  for (i = MIN_SVNO; i <= MAX_SVNO; i++)
    {
      get_mbg_cfg(buffpp, &cfghp->cfg[i]);
    }
  
  for (i = MIN_SVNO; i <= MAX_SVNO; i++)
    {
      get_mbg_health(buffpp, &cfghp->health[i]);
    }
}

void
get_mbg_utc(
	unsigned char **buffpp,
	UTC *utcp
	)
{
  utcp->csum  = get_lsb_short(buffpp);
  utcp->valid = get_lsb_short(buffpp);

  get_mbg_tgps(buffpp, &utcp->t0t);
  
  if (fetch_ieee754(buffpp, IEEE_DOUBLE, &utcp->A0, mbg_double) != IEEE_OK)
    {
      L_CLR(&utcp->A0);
    }
  
  if (fetch_ieee754(buffpp, IEEE_DOUBLE, &utcp->A1, mbg_double) != IEEE_OK)
    {
      L_CLR(&utcp->A1);
    }

  utcp->WNlsf      = get_lsb_short(buffpp);
  utcp->DNt        = get_lsb_short(buffpp);
  utcp->delta_tls  = *(*buffpp)++;
  utcp->delta_tlsf = *(*buffpp)++;
}

void
get_mbg_lla(
	unsigned char **buffpp,
	LLA lla
	)
{
  int i;
  
  for (i = LAT; i <= ALT; i++)
    {
      if  (fetch_ieee754(buffpp, IEEE_DOUBLE, &lla[i], mbg_double) != IEEE_OK)
	{
	  L_CLR(&lla[i]);
	}
      else
	if (i != ALT)
	  {			/* convert to degrees (* 180/PI) */
	    mfp_mul(&lla[i].l_i, &lla[i].l_uf, lla[i].l_i, lla[i].l_uf, rad2deg_i, rad2deg_f);
	  }
    }
}

void
get_mbg_xyz(
	unsigned char **buffpp,
	XYZ xyz
	)
{
  int i;
  
  for (i = XP; i <= ZP; i++)
    {
      if  (fetch_ieee754(buffpp, IEEE_DOUBLE, &xyz[i], mbg_double) != IEEE_OK)
	{
	  L_CLR(&xyz[i]);
	}
    }
}

static void
get_mbg_comparam(
	unsigned char **buffpp,
	COM_PARM *comparamp
	)
{
  int i;
  
  comparamp->baud_rate = get_lsb_long(buffpp);
  for (i = 0; i < sizeof(comparamp->framing); i++)
    {
      comparamp->framing[i] = *(*buffpp)++;
    }
  comparamp->handshake = get_lsb_short(buffpp);
}

void
get_mbg_portparam(
	unsigned char **buffpp,
	PORT_PARM *portparamp
	)
{
  int i;
  
  for (i = 0; i < N_COM; i++)
    {
      get_mbg_comparam(buffpp, &portparamp->com[i]);
    }
  for (i = 0; i < N_COM; i++)
    {
      portparamp->mode[i] = *(*buffpp)++;
    }
}

#define FETCH_DOUBLE(src, addr)							\
	if  (fetch_ieee754(src, IEEE_DOUBLE, addr, mbg_double) != IEEE_OK)	\
	{									\
	  L_CLR(addr);								\
	}
	
void
get_mbg_eph(
	unsigned char ** buffpp,
	EPH *ephp
	)
{
  ephp->csum   = get_lsb_short(buffpp);
  ephp->valid  = get_lsb_short(buffpp);
  
  ephp->health = get_lsb_short(buffpp);
  ephp->IODC   = get_lsb_short(buffpp);
  ephp->IODE2  = get_lsb_short(buffpp);
  ephp->IODE3  = get_lsb_short(buffpp);

  get_mbg_tgps(buffpp, &ephp->tt);
  get_mbg_tgps(buffpp, &ephp->t0c);
  get_mbg_tgps(buffpp, &ephp->t0e);

  FETCH_DOUBLE(buffpp, &ephp->sqrt_A);
  FETCH_DOUBLE(buffpp, &ephp->e);
  FETCH_DOUBLE(buffpp, &ephp->M0);
  FETCH_DOUBLE(buffpp, &ephp->omega);
  FETCH_DOUBLE(buffpp, &ephp->OMEGA0);
  FETCH_DOUBLE(buffpp, &ephp->OMEGADOT);
  FETCH_DOUBLE(buffpp, &ephp->deltan);
  FETCH_DOUBLE(buffpp, &ephp->i0);
  FETCH_DOUBLE(buffpp, &ephp->idot);
  FETCH_DOUBLE(buffpp, &ephp->crc);
  FETCH_DOUBLE(buffpp, &ephp->crs);
  FETCH_DOUBLE(buffpp, &ephp->cuc);
  FETCH_DOUBLE(buffpp, &ephp->cus);
  FETCH_DOUBLE(buffpp, &ephp->cic);
  FETCH_DOUBLE(buffpp, &ephp->cis);

  FETCH_DOUBLE(buffpp, &ephp->af0);
  FETCH_DOUBLE(buffpp, &ephp->af1);
  FETCH_DOUBLE(buffpp, &ephp->af2);
  FETCH_DOUBLE(buffpp, &ephp->tgd);

  ephp->URA = get_lsb_short(buffpp);

  ephp->L2code = *(*buffpp)++;
  ephp->L2flag = *(*buffpp)++;
}

void
get_mbg_alm(
	unsigned char **buffpp,
	ALM *almp
	)
{
  almp->csum   = get_lsb_short(buffpp);
  almp->valid  = get_lsb_short(buffpp);
  
  almp->health = get_lsb_short(buffpp);
  get_mbg_tgps(buffpp, &almp->t0a);


  FETCH_DOUBLE(buffpp, &almp->sqrt_A);
  FETCH_DOUBLE(buffpp, &almp->e);

  FETCH_DOUBLE(buffpp, &almp->M0);
  FETCH_DOUBLE(buffpp, &almp->omega);
  FETCH_DOUBLE(buffpp, &almp->OMEGA0);
  FETCH_DOUBLE(buffpp, &almp->OMEGADOT);
  FETCH_DOUBLE(buffpp, &almp->deltai);
  FETCH_DOUBLE(buffpp, &almp->af0);
  FETCH_DOUBLE(buffpp, &almp->af1);
}

void
get_mbg_iono(
	unsigned char **buffpp,
	IONO *ionop
	)
{
  ionop->csum   = get_lsb_short(buffpp);
  ionop->valid  = get_lsb_short(buffpp);

  FETCH_DOUBLE(buffpp, &ionop->alpha_0);
  FETCH_DOUBLE(buffpp, &ionop->alpha_1);
  FETCH_DOUBLE(buffpp, &ionop->alpha_2);
  FETCH_DOUBLE(buffpp, &ionop->alpha_3);

  FETCH_DOUBLE(buffpp, &ionop->beta_0);
  FETCH_DOUBLE(buffpp, &ionop->beta_1);
  FETCH_DOUBLE(buffpp, &ionop->beta_2);
  FETCH_DOUBLE(buffpp, &ionop->beta_3);
}

/*
 * data_mbg.c,v
 * Revision 4.7  2005/10/07 22:11:10  kardel
 * bounded buffer implementation
 *
 * Revision 4.6.2.1  2005/09/25 10:23:06  kardel
 * support bounded buffers
 *
 * Revision 4.6  2005/04/16 17:32:10  kardel
 * update copyright
 *
 * Revision 4.5  2004/11/14 15:29:41  kardel
 * support PPSAPI, upgrade Copyright to Berkeley style
 *
 * Revision 4.3  1999/02/21 12:17:42  kardel
 * 4.91f reconcilation
 *
 * Revision 4.2  1998/06/14 21:09:39  kardel
 * Sun acc cleanup
 *
 * Revision 4.1  1998/05/24 08:02:06  kardel
 * trimmed version log
 *
 * Revision 4.0  1998/04/10 19:45:33  kardel
 * Start 4.0 release version numbering
 */