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#if defined(REFCLOCK) && (defined(PARSE) || defined(PARSEPPS)) && defined(CLOCK_TRIMSV6)
/*
* /src/NTP/REPOSITORY/v3/parse/clk_trimble.c,v 3.6 1993/10/30 09:44:45 kardel Exp
*
* Trimble SV6 clock support
*/
#include "sys/types.h"
#include "sys/time.h"
#include "sys/errno.h"
#include "ntp_fp.h"
#include "ntp_unixtime.h"
#include "ntp_calendar.h"
#include "parse.h"
/* 0000000000111111111122222222223333333 / char
* 0123456789012345678901234567890123456 \ posn
* >RTMhhmmssdddDDMMYYYYoodnnvrrrrr;*xx< Actual
* ----33445566600112222BB7__-_____--99- Parse
* >RTM 1 ;* <", Check
*/
#define hexval(x) (('0' <= (x) && (x) <= '9') ? (x) - '0' : \
('a' <= (x) && (x) <= 'f') ? (x) - 'a' + 10 : \
('A' <= (x) && (x) <= 'F') ? (x) - 'A' + 10 : \
-1)
#define O_USEC O_WDAY
#define O_GPSFIX O_FLAGS
#define O_CHKSUM O_UTCHOFFSET
static struct format trimsv6_fmt =
{ { { 13, 2 }, {15, 2}, { 17, 4}, /* Day, Month, Year */
{ 4, 2 }, { 6, 2}, { 8, 2}, /* Hour, Minute, Second */
{ 10, 3 }, {23, 1}, { 0, 0}, /* uSec, FIXes (WeekDAY, FLAGS, ZONE) */
{ 34, 2 }, { 0, 0}, { 21, 2}, /* cksum, -, utcS (UTC[HMS]OFFSET) */
},
">RTM 1 ;* <",
0
};
static unsigned LONG cvt_trimsv6();
clockformat_t clock_trimsv6 =
{ cvt_trimsv6, /* Trimble conversion */
syn_simple, /* easy time stamps for RS232 (fallback) */
pps_simple, /* easy PPS monitoring */
(unsigned LONG (*)())0, /* no time code synthesizer monitoring */
(void *)&trimsv6_fmt, /* conversion configuration */
"Trimble SV6",
37, /* string buffer */
F_START|F_END|SYNC_START|SYNC_ONE, /* paket START/END delimiter, START synchronisation, PPS ONE sampling */
{ 0, 0},
'>',
'<',
'\0'
};
static unsigned LONG
cvt_trimsv6(buffer, size, format, clock)
register char *buffer;
register int size;
register struct format *format;
register clocktime_t *clock;
{
LONG gpsfix;
u_char calc_csum = 0;
long recv_csum;
int i;
if (!Strok(buffer, format->fixed_string)) return CVT_NONE;
#define OFFS(x) format->field_offsets[(x)].offset
#define STOI(x, y) \
Stoi(&buffer[OFFS(x)], y, \
format->field_offsets[(x)].length)
if ( STOI(O_DAY, &clock->day) ||
STOI(O_MONTH, &clock->month) ||
STOI(O_YEAR, &clock->year) ||
STOI(O_HOUR, &clock->hour) ||
STOI(O_MIN, &clock->minute) ||
STOI(O_SEC, &clock->second) ||
STOI(O_USEC, &clock->usecond)||
STOI(O_GPSFIX, &gpsfix)
) return CVT_FAIL|CVT_BADFMT;
clock->usecond *= 1000;
/* Check that the checksum is right */
for (i=OFFS(O_CHKSUM)-1; i >= 0; i--) calc_csum ^= buffer[i];
recv_csum = (hexval(buffer[OFFS(O_CHKSUM)]) << 4) |
hexval(buffer[OFFS(O_CHKSUM)+1]);
if (recv_csum < 0) return CVT_FAIL|CVT_BADTIME;
if (((u_char) recv_csum) != calc_csum) return CVT_FAIL|CVT_BADTIME;
clock->utcoffset = 0;
/* What should flags be set to ? */
clock->flags = PARSEB_UTC;
/* if the current GPS fix is 9 (unknown), reject */
if (0 > gpsfix || gpsfix > 9) clock->flags |= PARSEB_POWERUP;
return CVT_OK;
}
#endif /* defined(PARSE) && defined(CLOCK_TRIMSV6) */
/*
* History:
*
* clk_trimble.c,v
* Revision 3.6 1993/10/30 09:44:45 kardel
* conditional compilation flag cleanup
*
* Revision 3.5 1993/10/09 15:01:35 kardel
* file structure unified
*
* revision 3.4
* date: 1993/10/08 14:44:51; author: kardel;
* trimble - initial working version
*
* revision 3.3
* date: 1993/10/03 19:10:50; author: kardel;
* restructured I/O handling
*
* revision 3.2
* date: 1993/09/27 21:07:17; author: kardel;
* Trimble alpha integration
*
* revision 3.1
* date: 1993/09/26 23:40:29; author: kardel;
* new parse driver logic
*
*/
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