/* * /src/NTP/ntp4-dev/libparse/clk_schmid.c,v 4.9 2005/04/16 17:32:10 kardel RELEASE_20050508_A * * clk_schmid.c,v 4.9 2005/04/16 17:32:10 kardel RELEASE_20050508_A * * Schmid clock support * based on information and testing from Adam W. Feigin et. al (Swisstime iis.ethz.ch) * * Copyright (c) 1995-2005 by Frank Kardel <kardel <AT> ntp.org> * Copyright (c) 1989-1994 by Frank Kardel, Friedrich-Alexander Universität Erlangen-Nürnberg, Germany * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the author nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ #if HAVE_CONFIG_H # include <config.h> #endif #if defined(REFCLOCK) && defined(CLOCK_PARSE) && defined(CLOCK_SCHMID) #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%lx, 0x%x, ...)\n", (long)parseio, 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 4.9 2005/04/16 17:32:10 kardel * update copyright * * Revision 4.8 2004/11/14 15:29:41 kardel * support PPSAPI, upgrade Copyright to Berkeley style * * 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 */