contrib/ntp/libparse/clk_dcf7000.c

   1 /*
   2  * /src/NTP/ntp4-dev/libparse/clk_dcf7000.c,v 4.10 2005/04/16 17:32:10 kardel RELEASE_20050508_A
   3  *
   4  * clk_dcf7000.c,v 4.10 2005/04/16 17:32:10 kardel RELEASE_20050508_A
   5  *
   6  * ELV DCF7000 module
   7  *
   8  * Copyright (c) 1995-2005 by Frank Kardel <kardel <AT> ntp.org>
   9  * Copyright (c) 1989-1994 by Frank Kardel, Friedrich-Alexander Universität Erlangen-Nürnberg, Germany
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. Neither the name of the author nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  *
  35  */
  36
  37 #ifdef HAVE_CONFIG_H
  38 # include <config.h>
  39 #endif
  40
  41 #if defined(REFCLOCK) && defined(CLOCK_PARSE) && defined(CLOCK_DCF7000)
  42
  43 #include "ntp_fp.h"
  44 #include "ntp_unixtime.h"
  45 #include "ntp_calendar.h"
  46
  47 #include "parse.h"
  48
  49 #ifndef PARSESTREAM
  50 #include "ntp_stdlib.h"
  51 #include <stdio.h>
  52 #else
  53 #include "sys/parsestreams.h"
  54 extern void printf P((const char *, ...));
  55 #endif
  56
  57 static struct format dcf7000_fmt =
  58 {                               /* ELV DCF7000 */
  59         {
  60                 {  6, 2}, {  3, 2}, {  0, 2},
  61                 { 12, 2}, { 15, 2}, { 18, 2},
  62                 {  9, 2}, { 21, 2},
  63         },
  64         (const unsigned char *)"  -  -  -  -  -  -  -  \r",
  65         0
  66 };
  67 static u_long cvt_dcf7000 P((unsigned char *, int, struct format *, clocktime_t *, void *));
  68 static unsigned long inp_dcf7000 P((parse_t *, unsigned int, timestamp_t *));
  69
  70 clockformat_t clock_dcf7000 =
  71 {
  72   inp_dcf7000,                  /* DCF7000 input handling */
  73   cvt_dcf7000,                  /* ELV DCF77 conversion */
  74   0,                            /* no direct PPS monitoring */
  75   (void *)&dcf7000_fmt,         /* conversion configuration */
  76   "ELV DCF7000",                /* ELV clock */
  77   24,                           /* string buffer */
  78   0                             /* no private data (complete pakets) */
  79 };
  80
  81 /*
  82  * cvt_dcf7000
  83  *
  84  * convert dcf7000 type format
  85  */
  86 static u_long
  87 cvt_dcf7000(
  88             unsigned char *buffer,
  89             int            size,
  90             struct format *format,
  91             clocktime_t   *clock_time,
  92             void          *local
  93             )
  94 {
  95         if (!Strok(buffer, format->fixed_string))
  96         {
  97                 return CVT_NONE;
  98         }
  99         else
 100         {
 101                 if (Stoi(&buffer[format->field_offsets[O_DAY].offset], &clock_time->day,
 102                          format->field_offsets[O_DAY].length) ||
 103                     Stoi(&buffer[format->field_offsets[O_MONTH].offset], &clock_time->month,
 104                          format->field_offsets[O_MONTH].length) ||
 105                     Stoi(&buffer[format->field_offsets[O_YEAR].offset], &clock_time->year,
 106                          format->field_offsets[O_YEAR].length) ||
 107                     Stoi(&buffer[format->field_offsets[O_HOUR].offset], &clock_time->hour,
 108                          format->field_offsets[O_HOUR].length) ||
 109                     Stoi(&buffer[format->field_offsets[O_MIN].offset], &clock_time->minute,
 110                          format->field_offsets[O_MIN].length) ||
 111                     Stoi(&buffer[format->field_offsets[O_SEC].offset], &clock_time->second,
 112                          format->field_offsets[O_SEC].length))
 113                 {
 114                         return CVT_FAIL|CVT_BADFMT;
 115                 }
 116                 else
 117                 {
 118                         unsigned char *f = &buffer[format->field_offsets[O_FLAGS].offset];
 119                         long flags;
 120
 121                         clock_time->flags = 0;
 122                         clock_time->usecond = 0;
 123
 124                         if (Stoi(f, &flags, format->field_offsets[O_FLAGS].length))
 125                         {
 126                                 return CVT_FAIL|CVT_BADFMT;
 127                         }
 128                         else
 129                         {
 130                                 if (flags & 0x1)
 131                                     clock_time->utcoffset = -2*60*60;
 132                                 else
 133                                     clock_time->utcoffset = -1*60*60;
 134
 135                                 if (flags & 0x2)
 136                                     clock_time->flags |= PARSEB_ANNOUNCE;
 137
 138                                 if (flags & 0x4)
 139                                     clock_time->flags |= PARSEB_NOSYNC;
 140                         }
 141                         return CVT_OK;
 142                 }
 143         }
 144 }
 145
 146 /*
 147  * inp_dcf700
 148  *
 149  * grep data from input stream
 150  */
 151 static u_long
 152 inp_dcf7000(
 153           parse_t      *parseio,
 154           unsigned int  ch,
 155           timestamp_t  *tstamp
 156           )
 157 {
 158         unsigned int rtc;
 159
 160         parseprintf(DD_PARSE, ("inp_dcf7000(0x%lx, 0x%x, ...)\n", (long)parseio, ch));
 161
 162         switch (ch)
 163         {
 164         case '\r':
 165                 parseprintf(DD_PARSE, ("inp_dcf7000: EOL seen\n"));
 166                 parseio->parse_dtime.parse_stime = *tstamp; /* collect timestamp */
 167                 if ((rtc = parse_addchar(parseio, ch)) == PARSE_INP_SKIP)
 168                         return parse_end(parseio);
 169                 else
 170                         return rtc;
 171
 172         default:
 173                 return parse_addchar(parseio, ch);
 174         }
 175 }
 176
 177 #else /* not (REFCLOCK && CLOCK_PARSE && CLOCK_DCF7000) */
 178 int clk_dcf7000_bs;
 179 #endif /* not (REFCLOCK && CLOCK_PARSE && CLOCK_DCF7000) */
 180
 181 /*
 182  * History:
 183  *
 184  * clk_dcf7000.c,v
 185  * Revision 4.10  2005/04/16 17:32:10  kardel
 186  * update copyright
 187  *
 188  * Revision 4.9  2004/11/14 15:29:41  kardel
 189  * support PPSAPI, upgrade Copyright to Berkeley style
 190  *
 191  * Revision 4.6  1999/11/28 09:13:49  kardel
 192  * RECON_4_0_98F
 193  *
 194  * Revision 4.5  1998/06/14 21:09:34  kardel
 195  * Sun acc cleanup
 196  *
 197  * Revision 4.4  1998/06/13 12:01:59  kardel
 198  * fix SYSV clock name clash
 199  *
 200  * Revision 4.3  1998/06/12 15:22:27  kardel
 201  * fix prototypes
 202  *
 203  * Revision 4.2  1998/06/12 09:13:24  kardel
 204  * conditional compile macros fixed
 205  * printf prototype
 206  *
 207  * Revision 4.1  1998/05/24 09:39:51  kardel
 208  * implementation of the new IO handling model
 209  *
 210  * Revision 4.0  1998/04/10 19:45:28  kardel
 211  * Start 4.0 release version numbering
 212  *
 213  * from V3 3.18 log info deleted 1998/04/11 kardel
 214  */