2 * refclock_tpro - clock driver for the KSI/Odetics TPRO-S IRIG-B reader
9 #if defined(REFCLOCK) && defined(CLOCK_TPRO)
13 #include "ntp_refclock.h"
14 #include "ntp_unixtime.h"
16 #include "ntp_stdlib.h"
22 * This driver supports the KSI/Odetecs TPRO-S IRIG-B reader and TPRO-
23 * SAT GPS receiver for the Sun Microsystems SBus. It requires that the
24 * tpro.o device driver be installed and loaded.
28 * TPRO interface definitions
30 #define DEVICE "/dev/tpro%d" /* device name and unit */
31 #define PRECISION (-20) /* precision assumed (1 us) */
32 #define REFID "IRIG" /* reference ID */
33 #define DESCRIPTION "KSI/Odetics TPRO/S IRIG Interface" /* WRU */
36 * Unit control structure
39 struct tproval tprodata; /* data returned from tpro read */
45 static int tpro_start (int, struct peer *);
46 static void tpro_shutdown (int, struct peer *);
47 static void tpro_poll (int unit, struct peer *);
52 struct refclock refclock_tpro = {
53 tpro_start, /* start up driver */
54 tpro_shutdown, /* shut down driver */
55 tpro_poll, /* transmit poll message */
56 noentry, /* not used (old tpro_control) */
57 noentry, /* initialize driver (not used) */
58 noentry, /* not used (old tpro_buginfo) */
59 NOFLAGS /* not used */
64 * tpro_start - open the TPRO device and initialize data for processing
72 register struct tprounit *up;
73 struct refclockproc *pp;
80 snprintf(device, sizeof(device), DEVICE, unit);
81 fd = open(device, O_RDONLY | O_NDELAY, 0777);
83 msyslog(LOG_ERR, "tpro_start: open of %s: %m", device);
88 * Allocate and initialize unit structure
90 up = emalloc_zero(sizeof(*up));
92 pp->io.clock_recv = noentry;
93 pp->io.srcclock = peer;
99 * Initialize miscellaneous peer variables
101 peer->precision = PRECISION;
102 pp->clockdesc = DESCRIPTION;
103 memcpy((char *)&pp->refid, REFID, 4);
109 * tpro_shutdown - shut down the clock
117 register struct tprounit *up;
118 struct refclockproc *pp;
122 io_closeclock(&pp->io);
129 * tpro_poll - called by the transmit procedure
137 register struct tprounit *up;
138 struct refclockproc *pp;
142 * This is the main routine. It snatches the time from the TPRO
143 * board and tacks on a local timestamp.
149 if (read(pp->io.fd, (char *)tp, sizeof(struct tproval)) < 0) {
150 refclock_report(peer, CEVNT_FAULT);
153 get_systime(&pp->lastrec);
157 * We get down to business, check the timecode format and decode
158 * its contents. If the timecode has invalid length or is not in
159 * proper format, we declare bad format and exit. Note: we
160 * can't use the sec/usec conversion produced by the driver,
161 * since the year may be suspect. All format error checking is
162 * done by the snprintf() and sscanf() routines.
164 * Note that the refclockproc usec member has now become nsec.
165 * We could either multiply the read-in usec value by 1000 or
166 * we could pad the written string appropriately and read the
167 * resulting value in already scaled.
169 snprintf(pp->a_lastcode, sizeof(pp->a_lastcode),
170 "%1x%1x%1x %1x%1x:%1x%1x:%1x%1x.%1x%1x%1x%1x%1x%1x %1x",
171 tp->day100, tp->day10, tp->day1, tp->hour10, tp->hour1,
172 tp->min10, tp->min1, tp->sec10, tp->sec1, tp->ms100,
173 tp->ms10, tp->ms1, tp->usec100, tp->usec10, tp->usec1,
175 pp->lencode = strlen(pp->a_lastcode);
178 printf("tpro: time %s timecode %d %s\n",
179 ulfptoa(&pp->lastrec, 6), pp->lencode,
182 if (sscanf(pp->a_lastcode, "%3d %2d:%2d:%2d.%6ld", &pp->day,
183 &pp->hour, &pp->minute, &pp->second, &pp->nsec)
185 refclock_report(peer, CEVNT_BADTIME);
188 pp->nsec *= 1000; /* Convert usec to nsec */
189 if (!tp->status & 0x3)
190 pp->leap = LEAP_NOTINSYNC;
192 pp->leap = LEAP_NOWARNING;
193 if (!refclock_process(pp)) {
194 refclock_report(peer, CEVNT_BADTIME);
197 if (pp->coderecv == pp->codeproc) {
198 refclock_report(peer, CEVNT_TIMEOUT);
201 pp->lastref = pp->lastrec;
202 record_clock_stats(&peer->srcadr, pp->a_lastcode);
203 refclock_receive(peer);
207 int refclock_tpro_bs;
208 #endif /* REFCLOCK */