711 lines
21 KiB
C
711 lines
21 KiB
C
/*
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* refclock_jjy - clock driver for JJY receivers
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*/
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/**********************************************************************/
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/* */
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/* Copyright (C) 2001, Takao Abe. All rights reserved. */
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/* */
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/* Permission to use, copy, modify, and distribute this software */
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/* and its documentation for any purpose is hereby granted */
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/* without fee, provided that the following conditions are met: */
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/* */
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/* One retains the entire copyright notice properly, and both the */
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/* copyright notice and this license. in the documentation and/or */
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/* other materials provided with the distribution. */
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/* */
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/* This software and the name of the author must not be used to */
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/* endorse or promote products derived from this software without */
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/* prior written permission. */
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/* */
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/* THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT EXPRESSED OR IMPLIED */
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/* WARRANTIES OF ANY KIND, INCLUDING, BUT NOT LIMITED TO, THE */
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/* IMPLIED WARRANTIES OF MERCHANTABLILITY AND FITNESS FOR A */
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/* PARTICULAR PURPOSE. */
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/* IN NO EVENT SHALL THE AUTHOR TAKAO ABE BE LIABLE FOR ANY DIRECT, */
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/* INDIRECT, GENERAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES */
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/* ( INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE */
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/* GOODS OR SERVICES; LOSS OF USE, DATA OR PROFITS; OR BUSINESS */
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/* INTERRUPTION ) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, */
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/* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ( INCLUDING */
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/* NEGLIGENCE OR OTHERWISE ) ARISING IN ANY WAY OUT OF THE USE OF */
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/* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
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/* */
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/* This driver is developed in my private time, and is opened as */
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/* voluntary contributions for the NTP. */
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/* The manufacturer of the JJY receiver has not participated in */
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/* a development of this driver. */
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/* The manufacturer does not warrant anything about this driver, */
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/* and is not liable for anything about this driver. */
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/* */
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/**********************************************************************/
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/* */
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/* Author Takao Abe */
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/* Email abetakao@bea.hi-ho.ne.jp */
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/* Homepage http://www.bea.hi-ho.ne.jp/abetakao/ */
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/* */
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/**********************************************************************/
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/* */
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/* History */
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/* */
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/* 2001/07/15 */
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/* [New] Support the Tristate Ltd. JJY receiver */
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/* */
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/* 2001/08/04 */
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/* [Change] Log to clockstats even if bad reply */
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/* [Fix] PRECISION = (-3) (about 100 ms) */
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/* [Add] Support the C-DEX Co.Ltd. JJY receiver */
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/* 2001/12/04 */
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/* [Fix] C-DEX JST2000 ( fukusima@goto.info.waseda.ac.jp ) */
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/* */
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/**********************************************************************/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#if defined(REFCLOCK) && defined(CLOCK_JJY)
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#include <stdio.h>
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#include <ctype.h>
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#include <string.h>
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#include <sys/time.h>
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#include <time.h>
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#include "ntpd.h"
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#include "ntp_io.h"
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#include "ntp_tty.h"
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#include "ntp_refclock.h"
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#include "ntp_calendar.h"
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#include "ntp_stdlib.h"
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/**********************************************************************/
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/* */
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/* The Tristate Ltd. JJY receiver JJY01 */
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/* */
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/* Command Response Remarks */
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/* ------------ ---------------------- --------------------- */
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/* date<CR><LF> YYYY/MM/DD XXX<CR><LF> */
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/* time<CR><LF> HH:MM:SS<CR><LF> */
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/* stim<CR><LF> HH:MM:SS<CR><LF> Reply at just second */
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/* */
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/* During synchronization after a receiver is turned on, */
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/* It replies the past time from 2000/01/01 00:00:00. */
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/* The function "refclock_process" checks the time and tells */
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/* as an insanity time. */
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/* */
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/**********************************************************************/
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/* */
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/* The C-DEX Co. Ltd. JJY receiver JST2000 */
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/* */
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/* Command Response Remarks */
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/* ------------ ---------------------- --------------------- */
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/* <ENQ>1J<ETX> <STX>JYYMMDD HHMMSSS<ETX> */
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/* */
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/**********************************************************************/
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/*
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* Interface definitions
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*/
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#define DEVICE "/dev/jjy%d" /* device name and unit */
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#define SPEED232 B9600 /* uart speed (9600 baud) */
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#define REFID "JJY" /* reference ID */
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#define DESCRIPTION "JJY Receiver"
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#define PRECISION (-3) /* precision assumed (about 100 ms) */
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/*
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* JJY unit control structure
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*/
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struct jjyunit {
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char unittype ; /* UNITTYPE_XXXXXXXXXX */
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short version ;
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short linediscipline ; /* LDISC_CLK or LDISC_RAW */
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int linecount ;
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int lineerror ;
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int year, month, day, hour, minute, second, msecond ;
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/* LDISC_RAW only */
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#define MAX_LINECOUNT 8
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#define MAX_RAWBUF 64
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int lineexpect ;
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int charexpect [ MAX_LINECOUNT ] ;
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int charcount ;
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char rawbuf [ MAX_RAWBUF ] ;
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};
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#define UNITTYPE_TRISTATE_JJY01 1
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#define UNITTYPE_CDEX_JST2000 2
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/*
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* Function prototypes
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*/
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static int jjy_start P((int, struct peer *));
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static void jjy_shutdown P((int, struct peer *));
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static void jjy_poll P((int, struct peer *));
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static void jjy_poll_tristate_jjy01 P((int, struct peer *));
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static void jjy_poll_cdex_jst2000 P((int, struct peer *));
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static void jjy_receive P((struct recvbuf *));
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static int jjy_receive_tristate_jjy01 P((struct recvbuf *));
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static int jjy_receive_cdex_jst2000 P((struct recvbuf *));
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/*
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* Transfer vector
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*/
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struct refclock refclock_jjy = {
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jjy_start, /* start up driver */
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jjy_shutdown, /* shutdown driver */
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jjy_poll, /* transmit poll message */
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noentry, /* not used */
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noentry, /* not used */
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noentry, /* not used */
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NOFLAGS /* not used */
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};
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/*
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* Start up driver return code
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*/
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#define RC_START_SUCCESS 1
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#define RC_START_ERROR 0
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/*
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* Local constants definition
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*/
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#define MAX_LOGTEXT 64
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/**************************************************************************************************/
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/* jjy_start - open the devices and initialize data for processing */
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/**************************************************************************************************/
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static int
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jjy_start ( int unit, struct peer *peer )
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{
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struct jjyunit *up ;
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struct refclockproc *pp ;
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int fd ;
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char *pDeviceName ;
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short iDiscipline ;
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#ifdef DEBUG
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if ( debug ) {
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printf ( "jjy_start (refclock_jjy.c) : %s mode=%d ", ntoa(&peer->srcadr), peer->ttl ) ;
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printf ( DEVICE, unit ) ;
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printf ( "\n" ) ;
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}
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#endif
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/*
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* Open serial port
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*/
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if ( ! ( pDeviceName = (char*) emalloc ( strlen(DEVICE) + 10 ) ) ) {
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return RC_START_ERROR ;
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}
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sprintf ( pDeviceName, DEVICE, unit ) ;
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/*
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* peer->ttl is a mode number specified by "127.127.40.X mode N" in the ntp.conf
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*/
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switch ( peer->ttl ) {
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case 0 :
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case 1 : iDiscipline = LDISC_CLK ; break ;
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case 2 : iDiscipline = LDISC_RAW ; break ;
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default :
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msyslog ( LOG_ERR, "JJY receiver [ %s mode %d ] : Unsupported mode",
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ntoa(&peer->srcadr), peer->ttl ) ;
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free ( (void*) pDeviceName ) ;
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return RC_START_ERROR ;
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}
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if ( ! ( fd = refclock_open ( pDeviceName, SPEED232, iDiscipline ) ) ) {
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free ( (void*) pDeviceName ) ;
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return RC_START_ERROR ;
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}
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free ( (void*) pDeviceName ) ;
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/*
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* Allocate and initialize unit structure
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*/
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if ( ! ( up = (struct jjyunit *) emalloc (sizeof(struct jjyunit)) ) ) {
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close ( fd ) ;
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return RC_START_ERROR ;
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}
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memset ( (char*)up, 0, sizeof(struct jjyunit) ) ;
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up->linediscipline = iDiscipline ;
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/*
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* peer->ttl is a mode number specified by "127.127.40.X mode N" in the ntp.conf
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*/
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switch ( peer->ttl ) {
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case 0 :
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/*
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* The mode 0 is a default clock type at this time.
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* But this will be change to auto-detect mode in the future.
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*/
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case 1 :
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up->unittype = UNITTYPE_TRISTATE_JJY01 ;
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up->version = 100 ;
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up->lineexpect = 2 ;
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up->charexpect[0] = 14 ; /* YYYY/MM/DD WWW<CR><LF> */
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up->charexpect[1] = 8 ; /* HH:MM:SS<CR><LF> */
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break ;
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case 2 :
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up->unittype = UNITTYPE_CDEX_JST2000 ;
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up->lineexpect = 1 ;
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up->charexpect[0] = 15 ; /* <STX>JYYMMDD HHMMSSS<ETX> */
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break ;
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default :
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msyslog ( LOG_ERR, "JJY receiver [ %s mode %d ] : Unsupported mode",
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ntoa(&peer->srcadr), peer->ttl ) ;
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close ( fd ) ;
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free ( (void*) up ) ;
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return RC_START_ERROR ;
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}
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pp = peer->procptr ;
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pp->unitptr = (caddr_t) up ;
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pp->io.clock_recv = jjy_receive ;
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pp->io.srcclock = (caddr_t) peer ;
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pp->io.datalen = 0 ;
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pp->io.fd = fd ;
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if ( ! io_addclock(&pp->io) ) {
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close ( fd ) ;
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free ( (void*) up ) ;
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return RC_START_ERROR ;
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}
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/*
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* Initialize miscellaneous variables
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*/
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peer->precision = PRECISION ;
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peer->burst = 1 ;
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pp->clockdesc = DESCRIPTION ;
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memcpy ( (char*)&pp->refid, REFID, strlen(REFID) ) ;
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return RC_START_SUCCESS ;
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}
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/**************************************************************************************************/
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/* jjy_shutdown - shutdown the clock */
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/**************************************************************************************************/
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static void
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jjy_shutdown ( int unit, struct peer *peer )
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{
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struct jjyunit *up;
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struct refclockproc *pp;
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pp = peer->procptr ;
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up = (struct jjyunit *) pp->unitptr ;
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io_closeclock ( &pp->io ) ;
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free ( (void*) up ) ;
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}
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/**************************************************************************************************/
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/* jjy_receive - receive data from the serial interface */
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/**************************************************************************************************/
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static void
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jjy_receive ( struct recvbuf *rbufp )
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{
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struct jjyunit *up ;
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struct refclockproc *pp ;
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struct peer *peer;
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l_fp tRecvTimestamp; /* arrival timestamp */
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int rc ;
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char sLogText [ MAX_LOGTEXT ] ;
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int i, bCntrlChar ;
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/*
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* Initialize pointers and read the timecode and timestamp
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*/
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peer = (struct peer *) rbufp->recv_srcclock ;
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pp = peer->procptr ;
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up = (struct jjyunit *) pp->unitptr ;
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/*
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* Get next input line
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*/
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pp->lencode = refclock_gtlin ( rbufp, pp->a_lastcode, BMAX, &tRecvTimestamp ) ;
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if ( up->linediscipline == LDISC_RAW ) {
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/*
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* The reply with <STX> and <ETX> may give a blank line
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*/
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if ( pp->lencode == 0 && up->charcount == 0 ) return ;
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/*
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* Copy received charaters to temporary buffer
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*/
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for ( i = 0 ; i < pp->lencode && up->charcount < MAX_RAWBUF - 2 ; i ++ , up->charcount ++ ) {
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up->rawbuf[up->charcount] = pp->a_lastcode[i] ;
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}
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while ( up->charcount > 0 && up->rawbuf[0] < ' ' ) {
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for ( i = 0 ; i < up->charcount - 1 ; i ++ ) up->rawbuf[i] = up->rawbuf[i+1] ;
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up->charcount -- ;
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}
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bCntrlChar = 0 ;
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for ( i = 0 ; i < up->charcount ; i ++ ) {
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if ( up->rawbuf[i] < ' ' ) {
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bCntrlChar = 1 ;
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break ;
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}
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}
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if ( pp->lencode > 0 && up->linecount < up->lineexpect ) {
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if ( bCntrlChar == 0 && up->charcount < up->charexpect[up->linecount] ) return ;
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}
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up->rawbuf[up->charcount] = 0 ;
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} else {
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/*
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* The reply with <CR><LF> gives a blank line
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*/
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if ( pp->lencode == 0 ) return ;
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}
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/*
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* We get down to business
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*/
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pp->lastrec = tRecvTimestamp ;
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up->linecount ++ ;
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if ( up->lineerror != 0 ) return ;
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switch ( up->unittype ) {
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case UNITTYPE_TRISTATE_JJY01 :
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rc = jjy_receive_tristate_jjy01 ( rbufp ) ;
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break ;
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case UNITTYPE_CDEX_JST2000 :
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rc = jjy_receive_cdex_jst2000 ( rbufp ) ;
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break ;
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default :
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rc = 0 ;
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break ;
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}
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if ( up->linediscipline == LDISC_RAW ) {
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if ( up->linecount <= up->lineexpect && up->charcount > up->charexpect[up->linecount-1] ) {
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for ( i = 0 ; i < up->charcount - up->charexpect[up->linecount-1] ; i ++ ) {
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up->rawbuf[i] = up->rawbuf[i+up->charexpect[up->linecount-1]] ;
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}
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up->charcount -= up->charexpect[up->linecount-1] ;
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} else {
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up->charcount = 0 ;
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}
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}
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if ( rc == 0 ) return ;
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if ( up->lineerror != 0 ) {
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refclock_report ( peer, CEVNT_BADREPLY ) ;
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strcpy ( sLogText, "BAD REPLY [" ) ;
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if ( up->linediscipline == LDISC_RAW ) {
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strncat ( sLogText, up->rawbuf, MAX_LOGTEXT - strlen ( sLogText ) - 1 ) ;
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} else {
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strncat ( sLogText, pp->a_lastcode, MAX_LOGTEXT - strlen ( sLogText ) - 1 ) ;
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}
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sLogText[MAX_LOGTEXT-1] = 0 ;
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if ( strlen ( sLogText ) < MAX_LOGTEXT - 2 ) strcat ( sLogText, "]" ) ;
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record_clock_stats ( &peer->srcadr, sLogText ) ;
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return ;
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}
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pp->year = up->year ;
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pp->day = ymd2yd ( up->year, up->month, up->day ) ;
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pp->hour = up->hour ;
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pp->minute = up->minute ;
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pp->second = up->second ;
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pp->nsec = up->msecond * 1000000;
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/*
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* JST to UTC
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*/
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pp->hour -= 9 ;
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if ( pp->hour < 0 ) {
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pp->hour += 24 ;
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pp->day -- ;
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if ( pp->day < 1 ) {
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pp->year -- ;
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pp->day = ymd2yd ( pp->year, 12, 31 ) ;
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}
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}
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#ifdef DEBUG
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if ( debug ) {
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printf ( "jjy_receive (refclock_jjy.c) : %04d/%02d/%02d %02d:%02d:%02d JST ",
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up->year, up->month, up->day, up->hour, up->minute, up->second ) ;
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printf ( "( %04d/%03d %02d:%02d:%02d UTC )\n",
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pp->year, pp->day, pp->hour, pp->minute, pp->second ) ;
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}
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#endif
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/*
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* Process the new sample in the median filter and determine the
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* timecode timestamp.
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*/
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if ( ! refclock_process ( pp ) ) {
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refclock_report(peer, CEVNT_BADTIME);
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sprintf ( sLogText, "BAD TIME %04d/%02d/%02d %02d:%02d:%02d JST",
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up->year, up->month, up->day, up->hour, up->minute, up->second ) ;
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record_clock_stats ( &peer->srcadr, sLogText ) ;
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return ;
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}
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sprintf ( sLogText, "%04d/%02d/%02d %02d:%02d:%02d JST",
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up->year, up->month, up->day, up->hour, up->minute, up->second ) ;
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pp->lastref = pp->lastrec;
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refclock_receive(peer);
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record_clock_stats ( &peer->srcadr, sLogText ) ;
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}
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/**************************************************************************************************/
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static int
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jjy_receive_tristate_jjy01 ( struct recvbuf *rbufp )
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{
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struct jjyunit *up ;
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struct refclockproc *pp ;
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struct peer *peer;
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char *pBuf ;
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int iLen ;
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int rc ;
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/*
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* Initialize pointers and read the timecode and timestamp
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*/
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peer = (struct peer *) rbufp->recv_srcclock ;
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pp = peer->procptr ;
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up = (struct jjyunit *) pp->unitptr ;
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if ( up->linediscipline == LDISC_RAW ) {
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pBuf = up->rawbuf ;
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iLen = up->charcount ;
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} else {
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pBuf = pp->a_lastcode ;
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iLen = pp->lencode ;
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}
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switch ( up->linecount ) {
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case 1 : /* YYYY/MM/DD */
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if ( iLen < 10 ) {
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up->lineerror = 1 ;
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break ;
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}
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rc = sscanf ( pBuf, "%4d/%2d/%2d", &up->year, &up->month, &up->day ) ;
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if ( rc != 3 || up->year < 2000 || up->month < 1 || up->month > 12 || up->day < 1 || up->day > 31 ) {
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up->lineerror = 1 ;
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break ;
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}
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return 0 ;
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case 2 : /* HH:MM:SS */
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if ( iLen < 8 ) {
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up->lineerror = 1 ;
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break ;
|
|
}
|
|
rc = sscanf ( pBuf, "%2d:%2d:%2d", &up->hour, &up->minute, &up->second ) ;
|
|
if ( rc != 3 || up->hour > 23 || up->minute > 59 || up->second > 60 ) {
|
|
up->lineerror = 1 ;
|
|
break ;
|
|
}
|
|
up->msecond = 0 ;
|
|
if ( up->hour == 0 && up->minute == 0 && up->second <= 2 ) {
|
|
/*
|
|
* The command "date" and "time" ( or "stim" ) were sent to the JJY receiver continuously.
|
|
* But the JJY receiver replies a date and time separately.
|
|
* Just after midnight transtions, we ignore this time.
|
|
*/
|
|
return 0 ;
|
|
}
|
|
break ;
|
|
|
|
default : /* Unexpected reply */
|
|
|
|
up->lineerror = 1 ;
|
|
break ;
|
|
|
|
}
|
|
|
|
return 1 ;
|
|
|
|
}
|
|
|
|
/**************************************************************************************************/
|
|
|
|
static int
|
|
jjy_receive_cdex_jst2000 ( struct recvbuf *rbufp )
|
|
{
|
|
|
|
struct jjyunit *up ;
|
|
struct refclockproc *pp ;
|
|
struct peer *peer;
|
|
|
|
char *pBuf ;
|
|
int iLen ;
|
|
int rc ;
|
|
|
|
/*
|
|
* Initialize pointers and read the timecode and timestamp
|
|
*/
|
|
peer = (struct peer *) rbufp->recv_srcclock ;
|
|
pp = peer->procptr ;
|
|
up = (struct jjyunit *) pp->unitptr ;
|
|
|
|
if ( up->linediscipline == LDISC_RAW ) {
|
|
pBuf = up->rawbuf ;
|
|
iLen = up->charcount ;
|
|
} else {
|
|
pBuf = pp->a_lastcode ;
|
|
iLen = pp->lencode ;
|
|
}
|
|
|
|
switch ( up->linecount ) {
|
|
|
|
case 1 : /* JYYMMDD HHMMSSS */
|
|
|
|
if ( iLen < 15 ) {
|
|
up->lineerror = 1 ;
|
|
break ;
|
|
}
|
|
rc = sscanf ( pBuf, "J%2d%2d%2d%*1d%2d%2d%2d%1d",
|
|
&up->year, &up->month, &up->day, &up->hour, &up->minute, &up->second, &up->msecond ) ;
|
|
if ( rc != 7 || up->month < 1 || up->month > 12 || up->day < 1 || up->day > 31
|
|
|| up->hour > 23 || up->minute > 59 || up->second > 60 ) {
|
|
up->lineerror = 1 ;
|
|
break ;
|
|
}
|
|
up->year += 2000 ;
|
|
up->msecond *= 100 ;
|
|
break ;
|
|
|
|
default : /* Unexpected reply */
|
|
|
|
up->lineerror = 1 ;
|
|
break ;
|
|
|
|
}
|
|
|
|
return 1 ;
|
|
|
|
}
|
|
|
|
/**************************************************************************************************/
|
|
/* jjy_poll - called by the transmit procedure */
|
|
/**************************************************************************************************/
|
|
static void
|
|
jjy_poll ( int unit, struct peer *peer )
|
|
{
|
|
|
|
struct jjyunit *up;
|
|
struct refclockproc *pp;
|
|
|
|
pp = peer->procptr;
|
|
up = (struct jjyunit *) pp->unitptr ;
|
|
|
|
if ( pp->polls > 0 && up->linecount == 0 ) {
|
|
/*
|
|
* No reply for last command
|
|
*/
|
|
refclock_report ( peer, CEVNT_TIMEOUT ) ;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
if ( debug ) {
|
|
printf ( "jjy_poll (refclock_jjy.c) : %ld\n", pp->polls ) ;
|
|
}
|
|
#endif
|
|
|
|
pp->polls ++ ;
|
|
|
|
up->linecount = 0 ;
|
|
up->lineerror = 0 ;
|
|
up->charcount = 0 ;
|
|
|
|
switch ( up->unittype ) {
|
|
|
|
case UNITTYPE_TRISTATE_JJY01 :
|
|
jjy_poll_tristate_jjy01 ( unit, peer ) ;
|
|
break ;
|
|
|
|
case UNITTYPE_CDEX_JST2000 :
|
|
jjy_poll_cdex_jst2000 ( unit, peer ) ;
|
|
break ;
|
|
|
|
default :
|
|
break ;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/**************************************************************************************************/
|
|
|
|
static void
|
|
jjy_poll_tristate_jjy01 ( int unit, struct peer *peer )
|
|
{
|
|
|
|
struct jjyunit *up;
|
|
struct refclockproc *pp;
|
|
|
|
pp = peer->procptr;
|
|
up = (struct jjyunit *) pp->unitptr ;
|
|
|
|
/*
|
|
* Send "date<CR><LF>" command
|
|
*/
|
|
|
|
if ( write ( pp->io.fd, "date\r\n",6 ) != 6 ) {
|
|
refclock_report ( peer, CEVNT_FAULT ) ;
|
|
}
|
|
|
|
/*
|
|
* Send "stim<CR><LF>" or "time<CR><LF>" command
|
|
*/
|
|
|
|
if ( up->version >= 100 ) {
|
|
if ( write ( pp->io.fd, "stim\r\n",6 ) != 6 ) {
|
|
refclock_report ( peer, CEVNT_FAULT ) ;
|
|
}
|
|
} else {
|
|
if ( write ( pp->io.fd, "time\r\n",6 ) != 6 ) {
|
|
refclock_report ( peer, CEVNT_FAULT ) ;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
/**************************************************************************************************/
|
|
|
|
static void
|
|
jjy_poll_cdex_jst2000 ( int unit, struct peer *peer )
|
|
{
|
|
|
|
struct refclockproc *pp;
|
|
|
|
pp = peer->procptr;
|
|
|
|
/*
|
|
* Send "<ENQ>1J<ETX>" command
|
|
*/
|
|
|
|
if ( write ( pp->io.fd, "\0051J\003", 4 ) != 4 ) {
|
|
refclock_report ( peer, CEVNT_FAULT ) ;
|
|
}
|
|
|
|
}
|
|
|
|
#else
|
|
int refclock_jjy_bs ;
|
|
#endif /* REFCLOCK */
|