2 * /src/NTP/ntp4-dev/libparse/clk_trimtaip.c,v 4.11 2005/04/16 17:32:10 kardel RELEASE_20050508_A
4 * clk_trimtaip.c,v 4.11 2005/04/16 17:32:10 kardel RELEASE_20050508_A
6 * Trimble SV6 clock support - several collected codepieces
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
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12 * modification, are permitted provided that the following conditions
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.
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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41 #if defined(REFCLOCK) && defined(CLOCK_PARSE) && defined(CLOCK_TRIMTAIP)
44 #include "ntp_unixtime.h"
45 #include "ntp_calendar.h"
50 #include "ntp_stdlib.h"
53 #include "sys/parsestreams.h"
54 extern void printf P((const char *, ...));
57 /* 0000000000111111111122222222223333333 / char
58 * 0123456789012345678901234567890123456 \ posn
59 * >RTMhhmmssdddDDMMYYYYoodnnvrrrrr;*xx< Actual
60 * ----33445566600112222BB7__-_____--99- Parse
64 #define hexval(x) (('0' <= (x) && (x) <= '9') ? (x) - '0' : \
65 ('a' <= (x) && (x) <= 'f') ? (x) - 'a' + 10 : \
66 ('A' <= (x) && (x) <= 'F') ? (x) - 'A' + 10 : \
69 #define O_GPSFIX O_FLAGS
70 #define O_CHKSUM O_UTCHOFFSET
71 static struct format trimsv6_fmt =
72 { { { 13, 2 }, {15, 2}, { 17, 4}, /* Day, Month, Year */
73 { 4, 2 }, { 6, 2}, { 8, 2}, /* Hour, Minute, Second */
74 { 10, 3 }, {23, 1}, { 0, 0}, /* uSec, FIXes (WeekDAY, FLAGS, ZONE) */
75 { 34, 2 }, { 0, 0}, { 21, 2}, /* cksum, -, utcS (UTC[HMS]OFFSET) */
77 (const unsigned char *)">RTM 1 ;* <",
81 static unsigned long cvt_trimtaip P((unsigned char *, int, struct format *, clocktime_t *, void *));
82 static unsigned long inp_trimtaip P((parse_t *, unsigned int, timestamp_t *));
84 clockformat_t clock_trimtaip =
86 inp_trimtaip, /* no input handling */
87 cvt_trimtaip, /* Trimble conversion */
88 pps_one, /* easy PPS monitoring */
89 (void *)&trimsv6_fmt, /* conversion configuration */
91 37, /* string buffer */
92 0 /* no private data */
97 unsigned char *buffer,
99 struct format *format,
100 clocktime_t *clock_time,
105 u_char calc_csum = 0;
109 if (!Strok(buffer, format->fixed_string)) return CVT_NONE;
110 #define OFFS(x) format->field_offsets[(x)].offset
112 Stoi(&buffer[OFFS(x)], y, \
113 format->field_offsets[(x)].length)
114 if ( STOI(O_DAY, &clock_time->day) ||
115 STOI(O_MONTH, &clock_time->month) ||
116 STOI(O_YEAR, &clock_time->year) ||
117 STOI(O_HOUR, &clock_time->hour) ||
118 STOI(O_MIN, &clock_time->minute) ||
119 STOI(O_SEC, &clock_time->second) ||
120 STOI(O_USEC, &clock_time->usecond)||
121 STOI(O_GPSFIX, &gpsfix)
122 ) return CVT_FAIL|CVT_BADFMT;
124 clock_time->usecond *= 1000;
125 /* Check that the checksum is right */
126 for (i=OFFS(O_CHKSUM)-1; i >= 0; i--) calc_csum ^= buffer[i];
127 recv_csum = (hexval(buffer[OFFS(O_CHKSUM)]) << 4) |
128 hexval(buffer[OFFS(O_CHKSUM)+1]);
129 if (recv_csum < 0) return CVT_FAIL|CVT_BADTIME;
130 if (((u_char) recv_csum) != calc_csum) return CVT_FAIL|CVT_BADTIME;
132 clock_time->utcoffset = 0;
134 /* What should flags be set to ? */
135 clock_time->flags = PARSEB_UTC;
137 /* if the current GPS fix is 9 (unknown), reject */
138 if (0 > gpsfix || gpsfix > 9) clock_time->flags |= PARSEB_POWERUP;
146 * grep data from input stream
157 parseprintf(DD_PARSE, ("inp_trimtaip(0x%lx, 0x%x, ...)\n", (long)parseio, ch));
162 parseprintf(DD_PARSE, ("inp_trimptaip: START seen\n"));
164 parseio->parse_index = 1;
165 parseio->parse_data[0] = ch;
166 parseio->parse_dtime.parse_stime = *tstamp; /* collect timestamp */
167 return PARSE_INP_SKIP;
170 parseprintf(DD_PARSE, ("inp_trimtaip: END seen\n"));
171 if ((rtc = parse_addchar(parseio, ch)) == PARSE_INP_SKIP)
172 return parse_end(parseio);
178 return parse_addchar(parseio, ch);
182 #else /* not (REFCLOCK && CLOCK_PARSE && CLOCK_TRIMTAIP) */
184 #endif /* not (REFCLOCK && CLOCK_PARSE && CLOCK_TRIMTAIP) */
190 * Revision 4.11 2005/04/16 17:32:10 kardel
193 * Revision 4.10 2004/11/14 15:29:41 kardel
194 * support PPSAPI, upgrade Copyright to Berkeley style
196 * Revision 4.7 1999/11/28 09:13:51 kardel
199 * Revision 4.6 1998/08/16 18:46:27 kardel
200 * (clock_trimtaip =): changed format name
202 * Revision 4.5 1998/06/14 21:09:38 kardel
205 * Revision 4.4 1998/06/13 12:06:57 kardel
206 * fix SYSV clock name clash
208 * Revision 4.3 1998/06/12 15:22:29 kardel
211 * Revision 4.2 1998/06/12 09:13:26 kardel
212 * conditional compile macros fixed
215 * Revision 4.1 1998/05/24 09:39:54 kardel
216 * implementation of the new IO handling model
218 * Revision 4.0 1998/04/10 19:45:31 kardel
219 * Start 4.0 release version numbering
221 * from V3 1.4 log info deleted 1998/04/11 kardel