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 Universitaet Erlangen-Nuernberg, 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 parse_cvt_fnc_t cvt_trimtaip; 82 static parse_inp_fnc_t inp_trimtaip; 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 /* parse_cvt_fnc_t cvt_trimtaip */ 96 static u_long 97 cvt_trimtaip( 98 unsigned char *buffer, 99 int size, 100 struct format *format, 101 clocktime_t *clock_time, 102 void *local 103 ) 104 { 105 long gpsfix; 106 u_char calc_csum = 0; 107 long recv_csum; 108 int i; 109 110 if (!Strok(buffer, format->fixed_string)) return CVT_NONE; 111 #define OFFS(x) format->field_offsets[(x)].offset 112 #define STOI(x, y) \ 113 Stoi(&buffer[OFFS(x)], y, \ 114 format->field_offsets[(x)].length) 115 if ( STOI(O_DAY, &clock_time->day) || 116 STOI(O_MONTH, &clock_time->month) || 117 STOI(O_YEAR, &clock_time->year) || 118 STOI(O_HOUR, &clock_time->hour) || 119 STOI(O_MIN, &clock_time->minute) || 120 STOI(O_SEC, &clock_time->second) || 121 STOI(O_USEC, &clock_time->usecond)|| 122 STOI(O_GPSFIX, &gpsfix) 123 ) return CVT_FAIL|CVT_BADFMT; 124 125 clock_time->usecond *= 1000; 126 /* Check that the checksum is right */ 127 for (i=OFFS(O_CHKSUM)-1; i >= 0; i--) calc_csum ^= buffer[i]; 128 recv_csum = (hexval(buffer[OFFS(O_CHKSUM)]) << 4) | 129 hexval(buffer[OFFS(O_CHKSUM)+1]); 130 if (recv_csum < 0) return CVT_FAIL|CVT_BADTIME; 131 if (((u_char) recv_csum) != calc_csum) return CVT_FAIL|CVT_BADTIME; 132 133 clock_time->utcoffset = 0; 134 135 /* What should flags be set to ? */ 136 clock_time->flags = PARSEB_UTC; 137 138 /* if the current GPS fix is 9 (unknown), reject */ 139 if (0 > gpsfix || gpsfix > 9) clock_time->flags |= PARSEB_POWERUP; 140 141 return CVT_OK; 142 } 143 144 /* 145 * parse_inp_fnc_t inp_trimtaip 146 * 147 * grab data from input stream 148 */ 149 static u_long 150 inp_trimtaip( 151 parse_t *parseio, 152 char ch, 153 timestamp_t *tstamp 154 ) 155 { 156 unsigned int rtc; 157 158 parseprintf(DD_PARSE, ("inp_trimtaip(0x%p, 0x%x, ...)\n", (void*)parseio, ch)); 159 160 switch (ch) 161 { 162 case '>': 163 parseprintf(DD_PARSE, ("inp_trimptaip: START seen\n")); 164 165 parseio->parse_index = 1; 166 parseio->parse_data[0] = ch; 167 parseio->parse_dtime.parse_stime = *tstamp; /* collect timestamp */ 168 return PARSE_INP_SKIP; 169 170 case '<': 171 parseprintf(DD_PARSE, ("inp_trimtaip: END seen\n")); 172 if ((rtc = parse_addchar(parseio, ch)) == PARSE_INP_SKIP) 173 return parse_end(parseio); 174 else 175 return rtc; 176 177 178 default: 179 return parse_addchar(parseio, ch); 180 } 181 } 182 183 #else /* not (REFCLOCK && CLOCK_PARSE && CLOCK_TRIMTAIP) */ 184 int clk_trimtaip_bs; 185 #endif /* not (REFCLOCK && CLOCK_PARSE && CLOCK_TRIMTAIP) */ 186 187 /* 188 * History: 189 * 190 * clk_trimtaip.c,v 191 * Revision 4.11 2005/04/16 17:32:10 kardel 192 * update copyright 193 * 194 * Revision 4.10 2004/11/14 15:29:41 kardel 195 * support PPSAPI, upgrade Copyright to Berkeley style 196 * 197 * Revision 4.7 1999/11/28 09:13:51 kardel 198 * RECON_4_0_98F 199 * 200 * Revision 4.6 1998/08/16 18:46:27 kardel 201 * (clock_trimtaip =): changed format name 202 * 203 * Revision 4.5 1998/06/14 21:09:38 kardel 204 * Sun acc cleanup 205 * 206 * Revision 4.4 1998/06/13 12:06:57 kardel 207 * fix SYSV clock name clash 208 * 209 * Revision 4.3 1998/06/12 15:22:29 kardel 210 * fix prototypes 211 * 212 * Revision 4.2 1998/06/12 09:13:26 kardel 213 * conditional compile macros fixed 214 * printf prototype 215 * 216 * Revision 4.1 1998/05/24 09:39:54 kardel 217 * implementation of the new IO handling model 218 * 219 * Revision 4.0 1998/04/10 19:45:31 kardel 220 * Start 4.0 release version numbering 221 * 222 * from V3 1.4 log info deleted 1998/04/11 kardel 223 */ 224 225