Annotation of embedaddon/ntp/libparse/clk_trimtaip.c, revision 1.1.1.1
1.1 misho 1: /*
2: * /src/NTP/ntp4-dev/libparse/clk_trimtaip.c,v 4.11 2005/04/16 17:32:10 kardel RELEASE_20050508_A
3: *
4: * clk_trimtaip.c,v 4.11 2005/04/16 17:32:10 kardel RELEASE_20050508_A
5: *
6: * Trimble SV6 clock support - several collected codepieces
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_TRIMTAIP)
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 int printf (const char *, ...);
55: #endif
56:
57: /* 0000000000111111111122222222223333333 / char
58: * 0123456789012345678901234567890123456 \ posn
59: * >RTMhhmmssdddDDMMYYYYoodnnvrrrrr;*xx< Actual
60: * ----33445566600112222BB7__-_____--99- Parse
61: * >RTM 1 ;* <", Check
62: */
63:
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 : \
67: -1)
68: #define O_USEC O_WDAY
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) */
76: },
77: (const unsigned char *)">RTM 1 ;* <",
78: 0
79: };
80:
81: static unsigned long cvt_trimtaip (unsigned char *, int, struct format *, clocktime_t *, void *);
82: static unsigned long inp_trimtaip (parse_t *, unsigned int, timestamp_t *);
83:
84: clockformat_t clock_trimtaip =
85: {
86: inp_trimtaip, /* no input handling */
87: cvt_trimtaip, /* Trimble conversion */
88: pps_one, /* easy PPS monitoring */
89: (void *)&trimsv6_fmt, /* conversion configuration */
90: "Trimble TAIP",
91: 37, /* string buffer */
92: 0 /* no private data */
93: };
94:
95: static unsigned long
96: cvt_trimtaip(
97: unsigned char *buffer,
98: int size,
99: struct format *format,
100: clocktime_t *clock_time,
101: void *local
102: )
103: {
104: long gpsfix;
105: u_char calc_csum = 0;
106: long recv_csum;
107: int i;
108:
109: if (!Strok(buffer, format->fixed_string)) return CVT_NONE;
110: #define OFFS(x) format->field_offsets[(x)].offset
111: #define STOI(x, y) \
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;
123:
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;
131:
132: clock_time->utcoffset = 0;
133:
134: /* What should flags be set to ? */
135: clock_time->flags = PARSEB_UTC;
136:
137: /* if the current GPS fix is 9 (unknown), reject */
138: if (0 > gpsfix || gpsfix > 9) clock_time->flags |= PARSEB_POWERUP;
139:
140: return CVT_OK;
141: }
142:
143: /*
144: * inp_trimtaip
145: *
146: * grep data from input stream
147: */
148: static u_long
149: inp_trimtaip(
150: parse_t *parseio,
151: unsigned int ch,
152: timestamp_t *tstamp
153: )
154: {
155: unsigned int rtc;
156:
157: parseprintf(DD_PARSE, ("inp_trimtaip(0x%lx, 0x%x, ...)\n", (long)parseio, ch));
158:
159: switch (ch)
160: {
161: case '>':
162: parseprintf(DD_PARSE, ("inp_trimptaip: START seen\n"));
163:
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;
168:
169: case '<':
170: parseprintf(DD_PARSE, ("inp_trimtaip: END seen\n"));
171: if ((rtc = parse_addchar(parseio, ch)) == PARSE_INP_SKIP)
172: return parse_end(parseio);
173: else
174: return rtc;
175:
176:
177: default:
178: return parse_addchar(parseio, ch);
179: }
180: }
181:
182: #else /* not (REFCLOCK && CLOCK_PARSE && CLOCK_TRIMTAIP) */
183: int clk_trimtaip_bs;
184: #endif /* not (REFCLOCK && CLOCK_PARSE && CLOCK_TRIMTAIP) */
185:
186: /*
187: * History:
188: *
189: * clk_trimtaip.c,v
190: * Revision 4.11 2005/04/16 17:32:10 kardel
191: * update copyright
192: *
193: * Revision 4.10 2004/11/14 15:29:41 kardel
194: * support PPSAPI, upgrade Copyright to Berkeley style
195: *
196: * Revision 4.7 1999/11/28 09:13:51 kardel
197: * RECON_4_0_98F
198: *
199: * Revision 4.6 1998/08/16 18:46:27 kardel
200: * (clock_trimtaip =): changed format name
201: *
202: * Revision 4.5 1998/06/14 21:09:38 kardel
203: * Sun acc cleanup
204: *
205: * Revision 4.4 1998/06/13 12:06:57 kardel
206: * fix SYSV clock name clash
207: *
208: * Revision 4.3 1998/06/12 15:22:29 kardel
209: * fix prototypes
210: *
211: * Revision 4.2 1998/06/12 09:13:26 kardel
212: * conditional compile macros fixed
213: * printf prototype
214: *
215: * Revision 4.1 1998/05/24 09:39:54 kardel
216: * implementation of the new IO handling model
217: *
218: * Revision 4.0 1998/04/10 19:45:31 kardel
219: * Start 4.0 release version numbering
220: *
221: * from V3 1.4 log info deleted 1998/04/11 kardel
222: */
223:
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