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-rw-r--r--usr.sbin/xntpd/parse/clk_rawdcf.c580
1 files changed, 0 insertions, 580 deletions
diff --git a/usr.sbin/xntpd/parse/clk_rawdcf.c b/usr.sbin/xntpd/parse/clk_rawdcf.c
deleted file mode 100644
index 042e5d3..0000000
--- a/usr.sbin/xntpd/parse/clk_rawdcf.c
+++ /dev/null
@@ -1,580 +0,0 @@
-#if defined(REFCLOCK) && (defined(PARSE) || defined(PARSEPPS)) && defined(CLOCK_RAWDCF)
-/*
- * /src/NTP/REPOSITORY/v3/parse/clk_rawdcf.c,v 3.16 1994/05/31 20:02:40 kardel Exp
- *
- * clk_rawdcf.c,v 3.16 1994/05/31 20:02:40 kardel Exp
- *
- * Raw DCF77 pulse clock support
- *
- * Copyright (c) 1992,1993,1994
- * Frank Kardel Friedrich-Alexander Universitaet Erlangen-Nuernberg
- *
- * 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.
- *
- */
-
-#include "sys/types.h"
-#include "sys/time.h"
-#include "sys/errno.h"
-#include "ntp_fp.h"
-#include "ntp_unixtime.h"
-#include "ntp_calendar.h"
-
-#include "parse.h"
-#ifdef PARSESTREAM
-#include "sys/parsestreams.h"
-#endif
-
-#ifndef PARSEKERNEL
-#include "ntp_stdlib.h"
-#endif
-
-/*
- * DCF77 raw time code
- *
- * From "Zur Zeit", Physikalisch-Technische Bundesanstalt (PTB), Braunschweig
- * und Berlin, Maerz 1989
- *
- * Timecode transmission:
- * AM:
- * time marks are send every second except for the second before the
- * next minute mark
- * time marks consist of a reduction of transmitter power to 25%
- * of the nominal level
- * the falling edge is the time indication (on time)
- * time marks of a 100ms duration constitute a logical 0
- * time marks of a 200ms duration constitute a logical 1
- * FM:
- * see the spec. (basically a (non-)inverted psuedo random phase shift)
- *
- * Encoding:
- * Second Contents
- * 0 - 10 AM: free, FM: 0
- * 11 - 14 free
- * 15 R - alternate antenna
- * 16 A1 - expect zone change (1 hour before)
- * 17 - 18 Z1,Z2 - time zone
- * 0 0 illegal
- * 0 1 MEZ (MET)
- * 1 0 MESZ (MED, MET DST)
- * 1 1 illegal
- * 19 A2 - expect leap insertion/deletion (1 hour before)
- * 20 S - start of time code (1)
- * 21 - 24 M1 - BCD (lsb first) Minutes
- * 25 - 27 M10 - BCD (lsb first) 10 Minutes
- * 28 P1 - Minute Parity (even)
- * 29 - 32 H1 - BCD (lsb first) Hours
- * 33 - 34 H10 - BCD (lsb first) 10 Hours
- * 35 P2 - Hour Parity (even)
- * 36 - 39 D1 - BCD (lsb first) Days
- * 40 - 41 D10 - BCD (lsb first) 10 Days
- * 42 - 44 DW - BCD (lsb first) day of week (1: Monday -> 7: Sunday)
- * 45 - 49 MO - BCD (lsb first) Month
- * 50 MO0 - 10 Months
- * 51 - 53 Y1 - BCD (lsb first) Years
- * 54 - 57 Y10 - BCD (lsb first) 10 Years
- * 58 P3 - Date Parity (even)
- * 59 - usually missing (minute indication), except for leap insertion
- */
-
-static u_long cvt_rawdcf();
-static u_long pps_rawdcf();
-static u_long snt_rawdcf();
-
-clockformat_t clock_rawdcf =
-{
- (unsigned LONG (*)())0, /* no input handling */
- cvt_rawdcf, /* raw dcf input conversion */
- (void (*)())0, /* no character bound synchronisation */
- pps_rawdcf, /* examining PPS information */
- snt_rawdcf, /* synthesize time code from input */
- (void *)0, /* buffer bit representation */
- "RAW DCF77 Timecode", /* direct decoding / time synthesis */
- 61, /* bit buffer */
- SYNC_ONE|SYNC_ZERO|SYNC_TIMEOUT|SYNC_SYNTHESIZE|CVT_FIXEDONLY,
- /* catch all transitions, buffer restart on timeout, fixed configuration only */
- 0, /* no private data (currently in input buffer) */
- { 1, 500000}, /* restart after 1.5 seconds */
- '\0',
- '\0',
- '\0'
-};
-
-static struct dcfparam
-{
- unsigned char onebits[60];
- unsigned char zerobits[60];
-} dcfparam =
-{
- "###############RADMLS1248124P124812P1248121241248112481248P", /* 'ONE' representation */
- "--------------------s-------p------p----------------------p" /* 'ZERO' representation */
-};
-
-static struct rawdcfcode
-{
- char offset; /* start bit */
-} rawdcfcode[] =
-{
- { 0 }, { 15 }, { 16 }, { 17 }, { 19 }, { 20 }, { 21 }, { 25 }, { 28 }, { 29 },
- { 33 }, { 35 }, { 36 }, { 40 }, { 42 }, { 45 }, { 49 }, { 50 }, { 54 }, { 58 }, { 59 }
-};
-
-#define DCF_M 0
-#define DCF_R 1
-#define DCF_A1 2
-#define DCF_Z 3
-#define DCF_A2 4
-#define DCF_S 5
-#define DCF_M1 6
-#define DCF_M10 7
-#define DCF_P1 8
-#define DCF_H1 9
-#define DCF_H10 10
-#define DCF_P2 11
-#define DCF_D1 12
-#define DCF_D10 13
-#define DCF_DW 14
-#define DCF_MO 15
-#define DCF_MO0 16
-#define DCF_Y1 17
-#define DCF_Y10 18
-#define DCF_P3 19
-
-static struct partab
-{
- char offset; /* start bit of parity field */
-} partab[] =
-{
- { 21 }, { 29 }, { 36 }, { 59 }
-};
-
-#define DCF_P_P1 0
-#define DCF_P_P2 1
-#define DCF_P_P3 2
-
-#define DCF_Z_MET 0x2
-#define DCF_Z_MED 0x1
-
-static u_long ext_bf(buf, idx, zero)
- register char *buf;
- register int idx;
- register char *zero;
-{
- register u_long sum = 0;
- register int i, first;
-
- first = rawdcfcode[idx].offset;
-
- for (i = rawdcfcode[idx+1].offset - 1; i >= first; i--)
- {
- sum <<= 1;
- sum |= (buf[i] != zero[i]);
- }
- return sum;
-}
-
-static unsigned pcheck(buf, idx, zero)
- register char *buf;
- register int idx;
- register char *zero;
-{
- register int i,last;
- register unsigned psum = 1;
-
- last = partab[idx+1].offset;
-
- for (i = partab[idx].offset; i < last; i++)
- psum ^= (buf[i] != zero[i]);
-
- return psum;
-}
-
-static u_long convert_rawdcf(buffer, size, dcfparam, clock)
- register unsigned char *buffer;
- register int size;
- register struct dcfparam *dcfparam;
- register clocktime_t *clock;
-{
- register unsigned char *s = buffer;
- register unsigned char *b = dcfparam->onebits;
- register unsigned char *c = dcfparam->zerobits;
- register int i;
-
- parseprintf(DD_RAWDCF,("parse: convert_rawdcf: \"%s\"\n", buffer));
-
- if (size < 57)
- {
-#ifdef PARSEKERNEL
- printf("parse: convert_rawdcf: INCOMPLETE DATA - time code only has %d bits\n", size);
-#else
- syslog(LOG_ERR, "parse: convert_rawdcf: INCOMPLETE DATA - time code only has %d bits\n", size);
-#endif
- return CVT_NONE;
- }
-
- for (i = 0; i < 58; i++)
- {
- if ((*s != *b) && (*s != *c))
- {
- /*
- * we only have two types of bytes (ones and zeros)
- */
-#ifdef PARSEKERNEL
- printf("parse: convert_rawdcf: BAD DATA - no conversion for \"%s\"\n", buffer);
-#else
- syslog(LOG_ERR, "parse: convert_rawdcf: BAD DATA - no conversion for \"%s\"\n", buffer);
-#endif
- return CVT_NONE;
- }
- b++;
- c++;
- s++;
- }
-
- /*
- * check Start and Parity bits
- */
- if ((ext_bf(buffer, DCF_S, dcfparam->zerobits) == 1) &&
- pcheck(buffer, DCF_P_P1, dcfparam->zerobits) &&
- pcheck(buffer, DCF_P_P2, dcfparam->zerobits) &&
- pcheck(buffer, DCF_P_P3, dcfparam->zerobits))
- {
- /*
- * buffer OK
- */
- parseprintf(DD_RAWDCF,("parse: convert_rawdcf: parity check passed\n"));
-
- clock->flags = PARSEB_S_ANTENNA|PARSEB_S_LEAP;
- clock->utctime= 0;
- clock->usecond= 0;
- clock->second = 0;
- clock->minute = ext_bf(buffer, DCF_M10, dcfparam->zerobits);
- clock->minute = TIMES10(clock->minute) + ext_bf(buffer, DCF_M1, dcfparam->zerobits);
- clock->hour = ext_bf(buffer, DCF_H10, dcfparam->zerobits);
- clock->hour = TIMES10(clock->hour) + ext_bf(buffer, DCF_H1, dcfparam->zerobits);
- clock->day = ext_bf(buffer, DCF_D10, dcfparam->zerobits);
- clock->day = TIMES10(clock->day) + ext_bf(buffer, DCF_D1, dcfparam->zerobits);
- clock->month = ext_bf(buffer, DCF_MO0, dcfparam->zerobits);
- clock->month = TIMES10(clock->month) + ext_bf(buffer, DCF_MO, dcfparam->zerobits);
- clock->year = ext_bf(buffer, DCF_Y10, dcfparam->zerobits);
- clock->year = TIMES10(clock->year) + ext_bf(buffer, DCF_Y1, dcfparam->zerobits);
-
- switch (ext_bf(buffer, DCF_Z, dcfparam->zerobits))
- {
- case DCF_Z_MET:
- clock->utcoffset = -1*60*60;
- break;
-
- case DCF_Z_MED:
- clock->flags |= PARSEB_DST;
- clock->utcoffset = -2*60*60;
- break;
-
- default:
- parseprintf(DD_RAWDCF,("parse: convert_rawdcf: BAD TIME ZONE\n"));
- return CVT_FAIL|CVT_BADFMT;
- }
-
- if (ext_bf(buffer, DCF_A1, dcfparam->zerobits))
- clock->flags |= PARSEB_ANNOUNCE;
-
- if (ext_bf(buffer, DCF_A2, dcfparam->zerobits))
- clock->flags |= PARSEB_LEAPADD; /* default: DCF77 data format deficiency */
-
- if (ext_bf(buffer, DCF_R, dcfparam->zerobits))
- clock->flags |= PARSEB_ALTERNATE;
-
- parseprintf(DD_RAWDCF,("parse: convert_rawdcf: TIME CODE OK: %d:%d, %d.%d.%d, flags 0x%lx\n",
- (int)clock->hour, (int)clock->minute, (int)clock->day, (int)clock->month,(int) clock->year,
- (u_long)clock->flags));
- return CVT_OK;
- }
- else
- {
- /*
- * bad format - not for us
- */
-#ifdef PARSEKERNEL
- printf("parse: convert_rawdcf: parity check FAILED for \"%s\"\n", buffer);
-#else
- syslog(LOG_ERR, "parse: convert_rawdcf: parity check FAILED for \"%s\"\n", buffer);
-#endif
- return CVT_FAIL|CVT_BADFMT;
- }
-}
-
-/*
- * raw dcf input routine - needs to fix up 50 baud
- * characters for 1/0 decision
- */
-static u_long cvt_rawdcf(buffer, size, param, clock)
- register unsigned char *buffer;
- register int size;
- register void *param;
- register clocktime_t *clock;
-{
- register unsigned char *s = buffer;
- register unsigned char *e = buffer + size;
- register unsigned char *b = dcfparam.onebits;
- register unsigned char *c = dcfparam.zerobits;
- register unsigned rtc = CVT_NONE;
- register unsigned int i, lowmax, highmax, cutoff, span;
-#define BITS 9
- unsigned char histbuf[BITS];
- /*
- * the input buffer contains characters with runs of consecutive
- * bits set. These set bits are an indication of the DCF77 pulse
- * length. We assume that we receive the pulse at 50 Baud. Thus
- * a 100ms pulse would generate a 4 bit train (20ms per bit and
- * start bit)
- * a 200ms pulse would create all zeroes (and probably a frame error)
- */
-
- for (i = 0; i < BITS; i++)
- {
- histbuf[i] = 0;
- }
-
- cutoff = 0;
- lowmax = 0;
-
- while (s < e)
- {
- register unsigned int ch = *s ^ 0xFF;
- /*
- * these lines are left as an excercise to the reader 8-)
- */
- if (!((ch+1) & ch) || !*s)
- {
-
- for (i = 0; ch; i++)
- {
- ch >>= 1;
- }
-
- *s = i;
- histbuf[i]++;
- cutoff += i;
- lowmax++;
- }
- else
- {
- parseprintf(DD_RAWDCF,("parse: cvt_rawdcf: character check for 0x%x@%d FAILED\n", *s, s - buffer));
- *s = ~0;
- rtc = CVT_FAIL|CVT_BADFMT;
- }
- s++;
- }
-
- if (lowmax)
- {
- cutoff /= lowmax;
- }
- else
- {
- cutoff = 4; /* doesn't really matter - it'll fail anyway, but gives error output */
- }
-
- parseprintf(DD_RAWDCF,("parse: cvt_rawdcf: average bit count: %d\n", cutoff));
-
- lowmax = 0;
- highmax = 0;
-
- parseprintf(DD_RAWDCF,("parse: cvt_rawdcf: histogram:"));
- for (i = 0; i <= cutoff; i++)
- {
- lowmax+=histbuf[i] * i;
- highmax += histbuf[i];
- parseprintf(DD_RAWDCF,(" %d", histbuf[i]));
- }
- parseprintf(DD_RAWDCF, (" <M>"));
-
- lowmax += highmax / 2;
-
- if (highmax)
- {
- lowmax /= highmax;
- }
- else
- {
- lowmax = 0;
- }
-
- highmax = 0;
- cutoff = 0;
-
- for (; i < BITS; i++)
- {
- highmax+=histbuf[i] * i;
- cutoff +=histbuf[i];
- parseprintf(DD_RAWDCF,(" %d", histbuf[i]));
- }
- parseprintf(DD_RAWDCF,("\n"));
-
- if (cutoff)
- {
- highmax /= cutoff;
- }
- else
- {
- highmax = BITS-1;
- }
-
- span = cutoff = lowmax;
- for (i = lowmax; i <= highmax; i++)
- {
- if (histbuf[cutoff] > histbuf[i])
- {
- cutoff = i;
- span = i;
- }
- else
- if (histbuf[cutoff] == histbuf[i])
- {
- span = i;
- }
- }
-
- cutoff = (cutoff + span) / 2;
-
- parseprintf(DD_RAWDCF,("parse: cvt_rawdcf: lower maximum %d, higher maximum %d, cutoff %d\n", lowmax, highmax, cutoff));
-
- s = buffer;
- while ((s < e) && *c && *b)
- {
- if (*s == (unsigned char)~0)
- {
- *s = '?';
- }
- else
- {
- *s = (*s >= cutoff) ? *b : *c;
- }
- s++;
- b++;
- c++;
- }
-
- return (rtc == CVT_NONE) ? convert_rawdcf(buffer, size, &dcfparam, clock) : rtc;
-}
-
-/*
- * pps_rawdcf
- *
- * currently a very stupid version - should be extended to decode
- * also ones and zeros (which is easy)
- */
-/*ARGSUSED*/
-static u_long pps_rawdcf(parseio, status, ptime)
- register parse_t *parseio;
- register int status;
- register timestamp_t *ptime;
-{
- if (status)
- {
- parseio->parse_dtime.parse_ptime = *ptime;
- parseio->parse_dtime.parse_state |= PARSEB_PPS|PARSEB_S_PPS;
- }
-
- return CVT_NONE;
-}
-
-/*ARGSUSED*/
-static u_long snt_rawdcf(parseio, ptime)
- register parse_t *parseio;
- register timestamp_t *ptime;
-{
- clocktime_t clock;
- u_long cvtrtc;
- time_t t;
-
- /*
- * start at last sample and add second index - gross, may have to be much more careful
- */
- if (convert_rawdcf(parseio->parse_ldata, parseio->parse_ldsize - 1, &dcfparam, &clock) == CVT_OK)
- {
- if ((t = parse_to_unixtime(&clock, &cvtrtc)) == -1)
- {
- parseprintf(DD_RAWDCF,("parse: snt_rawdcf: time conversion FAILED\n"));
- return CVT_FAIL|cvtrtc;
- }
- }
- else
- {
- parseprintf(DD_RAWDCF,("parse: snt_rawdcf: data conversion FAILED\n"));
- return CVT_NONE;
- }
-
- parseio->parse_dtime.parse_stime = *ptime;
-
- t += parseio->parse_index - 1;
-
- /*
- * time stamp
- */
-#ifdef PARSEKERNEL
- parseio->parse_dtime.parse_time.tv.tv_sec = t;
- parseio->parse_dtime.parse_time.tv.tv_usec = clock.usecond;
-#else
- parseio->parse_dtime.parse_time.fp.l_ui = t + JAN_1970;
- TVUTOTSF(clock.usecond, parseio->parse_dtime.parse_time.fp.l_uf);
-#endif
-
- parseprintf(DD_RAWDCF,("parse: snt_rawdcf: time stamp synthesized offset %d seconds\n", parseio->parse_index - 1));
-
- return updatetimeinfo(parseio, t, clock.usecond, clock.flags);
-}
-#endif /* defined(PARSE) && defined(CLOCK_RAWDCF) */
-
-/*
- * History:
- *
- * clk_rawdcf.c,v $
- * Revision 3.16 1994/05/31 20:02:40 kardel
- * sync on ONE transition
- *
- * Revision 3.15 1994/05/30 10:20:01 kardel
- * LONG cleanup
- *
- * Revision 3.14 1994/05/12 12:49:09 kardel
- * printf fmt/arg cleanup
- *
- * Revision 3.13 1994/03/10 19:00:43 kardel
- * clear utctime field to avoid confusion on synthesize time stamps
- *
- * Revision 3.12 1994/02/20 13:04:39 kardel
- * parse add/delete second support
- *
- * Revision 3.11 1994/02/02 17:45:23 kardel
- * rcs ids fixed
- *
- * Revision 3.9 1994/01/25 19:05:12 kardel
- * 94/01/23 reconcilation
- *
- * Revision 3.8 1994/01/22 11:24:11 kardel
- * fixed PPS handling
- *
- * Revision 3.7 1993/10/30 09:44:41 kardel
- * conditional compilation flag cleanup
- *
- * Revision 3.6 1993/10/03 19:10:45 kardel
- * restructured I/O handling
- *
- * Revision 3.5 1993/09/27 21:08:07 kardel
- * utcoffset now in seconds
- *
- * Revision 3.4 1993/09/26 23:40:25 kardel
- * new parse driver logic
- *
- * Revision 3.3 1993/09/01 21:44:54 kardel
- * conditional cleanup
- *
- * Revision 3.2 1993/07/09 11:37:18 kardel
- * Initial restructured version + GPS support
- *
- * Revision 3.1 1993/07/06 10:00:19 kardel
- * DCF77 driver goes generic...
- *
- */
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