235 lines
5.5 KiB
C
235 lines
5.5 KiB
C
/*
|
|
* /src/NTP/ntp-4/libparse/clk_schmid.c,v 4.5 1999/11/28 09:13:51 kardel RELEASE_19991128_A
|
|
*
|
|
* clk_schmid.c,v 4.5 1999/11/28 09:13:51 kardel RELEASE_19991128_A
|
|
*
|
|
* Schmid clock support
|
|
*
|
|
* Copyright (C) 1992-1998 by Frank Kardel
|
|
* Friedrich-Alexander Universität Erlangen-Nürnberg, Germany
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
*
|
|
*/
|
|
|
|
#if HAVE_CONFIG_H
|
|
# include <config.h>
|
|
#endif
|
|
|
|
#if defined(REFCLOCK) && defined(CLOCK_PARSE) && defined(CLOCK_SCHMID)
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/time.h>
|
|
|
|
#include "ntp_fp.h"
|
|
#include "ntp_unixtime.h"
|
|
#include "ntp_calendar.h"
|
|
|
|
#include "parse.h"
|
|
|
|
#ifndef PARSESTREAM
|
|
#include "ntp_stdlib.h"
|
|
#include <stdio.h>
|
|
#else
|
|
#include "sys/parsestreams.h"
|
|
extern void printf P((const char *, ...));
|
|
#endif
|
|
|
|
/*
|
|
* Description courtesy of Adam W. Feigin et. al (Swisstime iis.ethz.ch)
|
|
*
|
|
* The command to Schmid's DCF77 clock is a single byte; each bit
|
|
* allows the user to select some part of the time string, as follows (the
|
|
* output for the lsb is sent first).
|
|
*
|
|
* Bit 0: time in MEZ, 4 bytes *binary, not BCD*; hh.mm.ss.tenths
|
|
* Bit 1: date 3 bytes *binary, not BCD: dd.mm.yy
|
|
* Bit 2: week day, 1 byte (unused here)
|
|
* Bit 3: time zone, 1 byte, 0=MET, 1=MEST. (unused here)
|
|
* Bit 4: clock status, 1 byte, 0=time invalid,
|
|
* 1=time from crystal backup,
|
|
* 3=time from DCF77
|
|
* Bit 5: transmitter status, 1 byte,
|
|
* bit 0: backup antenna
|
|
* bit 1: time zone change within 1h
|
|
* bit 3,2: TZ 01=MEST, 10=MET
|
|
* bit 4: leap second will be
|
|
* added within one hour
|
|
* bits 5-7: Zero
|
|
* Bit 6: time in backup mode, units of 5 minutes (unused here)
|
|
*
|
|
*/
|
|
#define WS_TIME 0x01
|
|
#define WS_SIGNAL 0x02
|
|
|
|
#define WS_ALTERNATE 0x01
|
|
#define WS_ANNOUNCE 0x02
|
|
#define WS_TZ 0x0c
|
|
#define WS_MET 0x08
|
|
#define WS_MEST 0x04
|
|
#define WS_LEAP 0x10
|
|
|
|
static u_long cvt_schmid P((unsigned char *, int, struct format *, clocktime_t *, void *));
|
|
static unsigned long inp_schmid P((parse_t *, unsigned int, timestamp_t *));
|
|
|
|
clockformat_t clock_schmid =
|
|
{
|
|
inp_schmid, /* no input handling */
|
|
cvt_schmid, /* Schmid conversion */
|
|
0, /* not direct PPS monitoring */
|
|
0, /* conversion configuration */
|
|
"Schmid", /* Schmid receiver */
|
|
12, /* binary data buffer */
|
|
0, /* no private data (complete messages) */
|
|
};
|
|
|
|
|
|
static u_long
|
|
cvt_schmid(
|
|
unsigned char *buffer,
|
|
int size,
|
|
struct format *format,
|
|
clocktime_t *clock_time,
|
|
void *local
|
|
)
|
|
{
|
|
if ((size != 11) || (buffer[10] != (unsigned char)'\375'))
|
|
{
|
|
return CVT_NONE;
|
|
}
|
|
else
|
|
{
|
|
if (buffer[0] > 23 || buffer[1] > 59 || buffer[2] > 59 || buffer[3] > 9) /* Time */
|
|
{
|
|
return CVT_FAIL|CVT_BADTIME;
|
|
}
|
|
else
|
|
if (buffer[4] < 1 || buffer[4] > 31 || buffer[5] < 1 || buffer[5] > 12
|
|
|| buffer[6] > 99)
|
|
{
|
|
return CVT_FAIL|CVT_BADDATE;
|
|
}
|
|
else
|
|
{
|
|
clock_time->hour = buffer[0];
|
|
clock_time->minute = buffer[1];
|
|
clock_time->second = buffer[2];
|
|
clock_time->usecond = buffer[3] * 100000;
|
|
clock_time->day = buffer[4];
|
|
clock_time->month = buffer[5];
|
|
clock_time->year = buffer[6];
|
|
|
|
clock_time->flags = 0;
|
|
|
|
switch (buffer[8] & WS_TZ)
|
|
{
|
|
case WS_MET:
|
|
clock_time->utcoffset = -1*60*60;
|
|
break;
|
|
|
|
case WS_MEST:
|
|
clock_time->utcoffset = -2*60*60;
|
|
clock_time->flags |= PARSEB_DST;
|
|
break;
|
|
|
|
default:
|
|
return CVT_FAIL|CVT_BADFMT;
|
|
}
|
|
|
|
if (!(buffer[7] & WS_TIME))
|
|
{
|
|
clock_time->flags |= PARSEB_POWERUP;
|
|
}
|
|
|
|
if (!(buffer[7] & WS_SIGNAL))
|
|
{
|
|
clock_time->flags |= PARSEB_NOSYNC;
|
|
}
|
|
|
|
if (buffer[7] & WS_SIGNAL)
|
|
{
|
|
if (buffer[8] & WS_ALTERNATE)
|
|
{
|
|
clock_time->flags |= PARSEB_ALTERNATE;
|
|
}
|
|
|
|
if (buffer[8] & WS_ANNOUNCE)
|
|
{
|
|
clock_time->flags |= PARSEB_ANNOUNCE;
|
|
}
|
|
|
|
if (buffer[8] & WS_LEAP)
|
|
{
|
|
clock_time->flags |= PARSEB_LEAPADD; /* default: DCF77 data format deficiency */
|
|
}
|
|
}
|
|
|
|
clock_time->flags |= PARSEB_S_LEAP|PARSEB_S_ANTENNA;
|
|
|
|
return CVT_OK;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* inp_schmid
|
|
*
|
|
* grep data from input stream
|
|
*/
|
|
static u_long
|
|
inp_schmid(
|
|
parse_t *parseio,
|
|
unsigned int ch,
|
|
timestamp_t *tstamp
|
|
)
|
|
{
|
|
unsigned int rtc;
|
|
|
|
parseprintf(DD_PARSE, ("inp_schmid(0x%x, 0x%x, ...)\n", (int)parseio, (int)ch));
|
|
|
|
switch (ch)
|
|
{
|
|
case 0xFD: /* */
|
|
parseprintf(DD_PARSE, ("mbg_input: ETX seen\n"));
|
|
if ((rtc = parse_addchar(parseio, ch)) == PARSE_INP_SKIP)
|
|
return parse_end(parseio);
|
|
else
|
|
return rtc;
|
|
|
|
default:
|
|
return parse_addchar(parseio, ch);
|
|
}
|
|
}
|
|
|
|
#else /* not (REFCLOCK && CLOCK_PARSE && CLOCK_SCHMID) */
|
|
int clk_schmid_bs;
|
|
#endif /* not (REFCLOCK && CLOCK_PARSE && CLOCK_SCHMID) */
|
|
|
|
/*
|
|
* History:
|
|
*
|
|
* clk_schmid.c,v
|
|
* Revision 4.5 1999/11/28 09:13:51 kardel
|
|
* RECON_4_0_98F
|
|
*
|
|
* Revision 4.4 1998/06/13 12:06:03 kardel
|
|
* fix SYSV clock name clash
|
|
*
|
|
* Revision 4.3 1998/06/12 15:22:29 kardel
|
|
* fix prototypes
|
|
*
|
|
* Revision 4.2 1998/06/12 09:13:26 kardel
|
|
* conditional compile macros fixed
|
|
* printf prototype
|
|
*
|
|
* Revision 4.1 1998/05/24 09:39:53 kardel
|
|
* implementation of the new IO handling model
|
|
*
|
|
* Revision 4.0 1998/04/10 19:45:31 kardel
|
|
* Start 4.0 release version numbering
|
|
*
|
|
* from V3 3.22 log info deleted 1998/04/11 kardel
|
|
*/
|