381 lines
7.7 KiB
C
381 lines
7.7 KiB
C
/*
|
|
*
|
|
* refclock_hopfser.c
|
|
* - clock driver for hopf serial boards (GPS or DCF77)
|
|
*
|
|
* Date: 30.03.2000 Revision: 01.10
|
|
*
|
|
* latest source and further information can be found at:
|
|
* http://www.ATLSoft.de/ntp
|
|
*
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#if defined(SYS_WINNT)
|
|
#undef close
|
|
#define close closesocket
|
|
#endif
|
|
|
|
#if defined(REFCLOCK) && (defined(CLOCK_HOPF_SERIAL))
|
|
|
|
#include "ntpd.h"
|
|
#include "ntp_io.h"
|
|
#include "ntp_control.h"
|
|
#include "ntp_refclock.h"
|
|
#include "ntp_unixtime.h"
|
|
#include "ntp_stdlib.h"
|
|
|
|
#if defined HAVE_SYS_MODEM_H
|
|
# include <sys/modem.h>
|
|
# ifndef __QNXNTO__
|
|
# define TIOCMSET MCSETA
|
|
# define TIOCMGET MCGETA
|
|
# define TIOCM_RTS MRTS
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef HAVE_TERMIOS_H
|
|
# ifdef TERMIOS_NEEDS__SVID3
|
|
# define _SVID3
|
|
# endif
|
|
# include <termios.h>
|
|
# ifdef TERMIOS_NEEDS__SVID3
|
|
# undef _SVID3
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef HAVE_SYS_IOCTL_H
|
|
# include <sys/ioctl.h>
|
|
#endif
|
|
|
|
/*
|
|
* clock definitions
|
|
*/
|
|
#define DESCRIPTION "hopf Elektronik serial clock" /* Long name */
|
|
#define PRECISION (-10) /* precision assumed (about 1 ms) */
|
|
#define REFID "hopf\0" /* reference ID */
|
|
/*
|
|
* I/O definitions
|
|
*/
|
|
#define DEVICE "/dev/hopfclock%d" /* device name and unit */
|
|
#define SPEED232 B9600 /* uart speed (9600 baud) */
|
|
|
|
|
|
#define STX 0x02
|
|
#define ETX 0x03
|
|
#define CR 0x0c
|
|
#define LF 0x0a
|
|
|
|
/* parse states */
|
|
#define REC_QUEUE_EMPTY 0
|
|
#define REC_QUEUE_FULL 1
|
|
|
|
#define HOPF_OPMODE 0x0C /* operation mode mask */
|
|
#define HOPF_INVALID 0x00 /* no time code available */
|
|
#define HOPF_INTERNAL 0x04 /* internal clock */
|
|
#define HOPF_RADIO 0x08 /* radio clock */
|
|
#define HOPF_RADIOHP 0x0C /* high precision radio clock */
|
|
|
|
/*
|
|
* hopfclock unit control structure.
|
|
*/
|
|
struct hopfclock_unit {
|
|
l_fp laststamp; /* last receive timestamp */
|
|
short unit; /* NTP refclock unit number */
|
|
u_long polled; /* flag to detect noreplies */
|
|
char leap_status; /* leap second flag */
|
|
int rpt_next;
|
|
};
|
|
|
|
/*
|
|
* Function prototypes
|
|
*/
|
|
|
|
static int hopfserial_start P((int, struct peer *));
|
|
static void hopfserial_shutdown P((int, struct peer *));
|
|
static void hopfserial_receive P((struct recvbuf *));
|
|
static void hopfserial_poll P((int, struct peer *));
|
|
/* static void hopfserial_io P((struct recvbuf *)); */
|
|
/*
|
|
* Transfer vector
|
|
*/
|
|
struct refclock refclock_hopfser = {
|
|
hopfserial_start, /* start up driver */
|
|
hopfserial_shutdown, /* shut down driver */
|
|
hopfserial_poll, /* transmit poll message */
|
|
noentry, /* not used */
|
|
noentry, /* initialize driver (not used) */
|
|
noentry, /* not used */
|
|
NOFLAGS /* not used */
|
|
};
|
|
|
|
/*
|
|
* hopfserial_start - open the devices and initialize data for processing
|
|
*/
|
|
static int
|
|
hopfserial_start (
|
|
int unit,
|
|
struct peer *peer
|
|
)
|
|
{
|
|
register struct hopfclock_unit *up;
|
|
struct refclockproc *pp;
|
|
int fd;
|
|
char gpsdev[20];
|
|
|
|
#ifdef SYS_WINNT
|
|
(void) sprintf(gpsdev, "COM%d:", unit);
|
|
#else
|
|
(void) sprintf(gpsdev, DEVICE, unit);
|
|
#endif
|
|
/* LDISC_STD, LDISC_RAW
|
|
* Open serial port. Use CLK line discipline, if available.
|
|
*/
|
|
fd = refclock_open(gpsdev, SPEED232, LDISC_CLK);
|
|
if (fd <= 0) {
|
|
#ifdef DEBUG
|
|
printf("hopfSerialClock(%d) start: open %s failed\n", unit, gpsdev);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
msyslog(LOG_NOTICE, "hopfSerialClock(%d) fd: %d dev: %s", unit, fd,
|
|
gpsdev);
|
|
|
|
/*
|
|
* Allocate and initialize unit structure
|
|
*/
|
|
up = (struct hopfclock_unit *) emalloc(sizeof(struct hopfclock_unit));
|
|
|
|
if (!(up)) {
|
|
msyslog(LOG_ERR, "hopfSerialClock(%d) emalloc: %m",unit);
|
|
#ifdef DEBUG
|
|
printf("hopfSerialClock(%d) emalloc\n",unit);
|
|
#endif
|
|
(void) close(fd);
|
|
return (0);
|
|
}
|
|
|
|
memset((char *)up, 0, sizeof(struct hopfclock_unit));
|
|
pp = peer->procptr;
|
|
pp->unitptr = (caddr_t)up;
|
|
pp->io.clock_recv = hopfserial_receive;
|
|
pp->io.srcclock = (caddr_t)peer;
|
|
pp->io.datalen = 0;
|
|
pp->io.fd = fd;
|
|
if (!io_addclock(&pp->io)) {
|
|
#ifdef DEBUG
|
|
printf("hopfSerialClock(%d) io_addclock\n",unit);
|
|
#endif
|
|
(void) close(fd);
|
|
free(up);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Initialize miscellaneous variables
|
|
*/
|
|
pp->clockdesc = DESCRIPTION;
|
|
peer->precision = PRECISION;
|
|
peer->burst = NSTAGE;
|
|
memcpy((char *)&pp->refid, REFID, 4);
|
|
|
|
up->leap_status = 0;
|
|
up->unit = (short) unit;
|
|
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* hopfserial_shutdown - shut down the clock
|
|
*/
|
|
static void
|
|
hopfserial_shutdown (
|
|
int unit,
|
|
struct peer *peer
|
|
)
|
|
{
|
|
register struct hopfclock_unit *up;
|
|
struct refclockproc *pp;
|
|
|
|
pp = peer->procptr;
|
|
up = (struct hopfclock_unit *)pp->unitptr;
|
|
io_closeclock(&pp->io);
|
|
free(up);
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* hopfserial_receive - receive data from the serial interface
|
|
*/
|
|
|
|
static void
|
|
hopfserial_receive (
|
|
struct recvbuf *rbufp
|
|
)
|
|
{
|
|
struct hopfclock_unit *up;
|
|
struct refclockproc *pp;
|
|
struct peer *peer;
|
|
|
|
int synch; /* synchhronization indicator */
|
|
int DoW; /* Dow */
|
|
|
|
int day, month; /* ddd conversion */
|
|
|
|
/*
|
|
* Initialize pointers and read the timecode and timestamp.
|
|
*/
|
|
peer = (struct peer *)rbufp->recv_srcclock;
|
|
pp = peer->procptr;
|
|
up = (struct hopfclock_unit *)pp->unitptr;
|
|
|
|
if (up->rpt_next == 0 )
|
|
return;
|
|
|
|
|
|
up->rpt_next = 0; /* wait until next poll interval occur */
|
|
|
|
pp->lencode = (u_short)refclock_gtlin(rbufp, pp->a_lastcode, BMAX, &pp->lastrec);
|
|
|
|
if (pp->lencode == 0)
|
|
return;
|
|
|
|
sscanf(pp->a_lastcode,
|
|
#if 1
|
|
"%1x%1x%2d%2d%2d%2d%2d%2d", /* ...cr,lf */
|
|
#else
|
|
"%*c%1x%1x%2d%2d%2d%2d%2d%2d", /* stx...cr,lf,etx */
|
|
#endif
|
|
&synch,
|
|
&DoW,
|
|
&pp->hour,
|
|
&pp->minute,
|
|
&pp->second,
|
|
&day,
|
|
&month,
|
|
&pp->year);
|
|
|
|
|
|
/*
|
|
Validate received values at least enough to prevent internal
|
|
array-bounds problems, etc.
|
|
*/
|
|
if((pp->hour < 0) || (pp->hour > 23) ||
|
|
(pp->minute < 0) || (pp->minute > 59) ||
|
|
(pp->second < 0) || (pp->second > 60) /*Allow for leap seconds.*/ ||
|
|
(day < 1) || (day > 31) ||
|
|
(month < 1) || (month > 12) ||
|
|
(pp->year < 0) || (pp->year > 99)) {
|
|
/* Data out of range. */
|
|
refclock_report(peer, CEVNT_BADREPLY);
|
|
return;
|
|
}
|
|
/*
|
|
some preparations
|
|
*/
|
|
pp->day = ymd2yd(pp->year,month,day);
|
|
pp->leap=0;
|
|
|
|
/* Year-2000 check! */
|
|
/* wrap 2-digit date into 4-digit */
|
|
|
|
if(pp->year < YEAR_PIVOT) { pp->year += 100; } /* < 98 */
|
|
pp->year += 1900;
|
|
|
|
/* preparation for timecode ntpq rl command ! */
|
|
|
|
#if 0
|
|
wsprintf(pp->a_lastcode,
|
|
"STATUS: %1X%1X, DATE: %02d.%02d.%04d TIME: %02d:%02d:%02d",
|
|
synch,
|
|
DoW,
|
|
day,
|
|
month,
|
|
pp->year,
|
|
pp->hour,
|
|
pp->minute,
|
|
pp->second);
|
|
|
|
pp->lencode = strlen(pp->a_lastcode);
|
|
if ((synch && 0xc) == 0 ){ /* time ok? */
|
|
refclock_report(peer, CEVNT_BADTIME);
|
|
pp->leap = LEAP_NOTINSYNC;
|
|
return;
|
|
}
|
|
#endif
|
|
/*
|
|
* If clock has no valid status then report error and exit
|
|
*/
|
|
if ((synch & HOPF_OPMODE) == HOPF_INVALID ){ /* time ok? */
|
|
refclock_report(peer, CEVNT_BADTIME);
|
|
pp->leap = LEAP_NOTINSYNC;
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Test if time is running on internal quarz
|
|
* if CLK_FLAG1 is set, sychronize even if no radio operation
|
|
*/
|
|
|
|
if ((synch & HOPF_OPMODE) == HOPF_INTERNAL){
|
|
if ((pp->sloppyclockflag & CLK_FLAG1) == 0) {
|
|
refclock_report(peer, CEVNT_BADTIME);
|
|
pp->leap = LEAP_NOTINSYNC;
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
if (!refclock_process(pp)) {
|
|
refclock_report(peer, CEVNT_BADTIME);
|
|
return;
|
|
}
|
|
pp->lastref = pp->lastrec;
|
|
refclock_receive(peer);
|
|
|
|
#if 0
|
|
msyslog(LOG_ERR, " D:%x D:%d D:%d",synch,pp->minute,pp->second);
|
|
#endif
|
|
|
|
record_clock_stats(&peer->srcadr, pp->a_lastcode);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/*
|
|
* hopfserial_poll - called by the transmit procedure
|
|
*
|
|
*/
|
|
static void
|
|
hopfserial_poll (
|
|
int unit,
|
|
struct peer *peer
|
|
)
|
|
{
|
|
register struct hopfclock_unit *up;
|
|
struct refclockproc *pp;
|
|
pp = peer->procptr;
|
|
|
|
up = (struct hopfclock_unit *)pp->unitptr;
|
|
|
|
pp->polls++;
|
|
up->rpt_next = 1;
|
|
|
|
#if 0
|
|
record_clock_stats(&peer->srcadr, pp->a_lastcode);
|
|
#endif
|
|
|
|
return;
|
|
}
|
|
|
|
#else
|
|
int refclock_hopfser_bs;
|
|
#endif /* REFCLOCK */
|