1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
#if defined(REFCLOCK) && (defined(PARSE) || defined(PARSEPPS)) && defined(CLOCK_SCHMID)
/*
* /src/NTP/REPOSITORY/v3/parse/clk_schmid.c,v 3.8 1993/11/01 20:00:18 kardel Exp
*
* clk_schmid.c,v 3.8 1993/11/01 20:00:18 kardel Exp
*
* Schmid clock support
*
* Copyright (c) 1992,1993
* 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"
/*
* 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 unsigned LONG cvt_schmid();
clockformat_t clock_schmid =
{
cvt_schmid, /* Schmid conversion */
syn_simple, /* easy time stamps */
(unsigned LONG (*)())0, /* not direct PPS monitoring */
(unsigned LONG (*)())0, /* no time code synthesizer monitoring */
(void *)0, /* conversion configuration */
"Schmid", /* Schmid receiver */
12, /* binary data buffer */
F_END|SYNC_START, /* END packet delimiter / synchronisation */
{ 0, 0},
'\0',
(unsigned char)'\375',
'\0'
};
static unsigned LONG
cvt_schmid(buffer, size, format, clock)
register char *buffer;
register int size;
register struct format *format;
register clocktime_t *clock;
{
if ((size != 11) || (buffer[10] != '\375'))
{
return CVT_NONE;
}
else
{
if (buffer[0] > 23 || buffer[1] > 59 || buffer[2] > 59 || buffer[3] > 9 /* Time */
|| buffer[0] < 0 || buffer[1] < 0 || buffer[2] < 0 || buffer[3] < 0)
{
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->hour = buffer[0];
clock->minute = buffer[1];
clock->second = buffer[2];
clock->usecond = buffer[3] * 100000;
clock->day = buffer[4];
clock->month = buffer[5];
clock->year = buffer[6];
clock->flags = 0;
switch (buffer[8] & WS_TZ)
{
case WS_MET:
clock->utcoffset = -1*60*60;
break;
case WS_MEST:
clock->utcoffset = -2*60*60;
clock->flags |= PARSEB_DST;
break;
default:
return CVT_FAIL|CVT_BADFMT;
}
if (!(buffer[7] & WS_TIME))
{
clock->flags |= PARSEB_POWERUP;
}
if (!(buffer[7] & WS_SIGNAL))
{
clock->flags |= PARSEB_NOSYNC;
}
if (buffer[7] & WS_SIGNAL)
{
if (buffer[8] & WS_ALTERNATE)
{
clock->flags |= PARSEB_ALTERNATE;
}
if (buffer[8] & WS_ANNOUNCE)
{
clock->flags |= PARSEB_ANNOUNCE;
}
if (buffer[8] & WS_LEAP)
{
clock->flags |= PARSEB_LEAP;
}
}
clock->flags |= PARSEB_S_LEAP|PARSEB_S_ANTENNA;
return CVT_OK;
}
}
}
#endif /* defined(PARSE) && defined(CLOCK_SCHMID) */
/*
* History:
*
* clk_schmid.c,v
* Revision 3.8 1993/11/01 20:00:18 kardel
* parse Solaris support (initial version)
*
* Revision 3.7 1993/10/30 09:44:43 kardel
* conditional compilation flag cleanup
*
* Revision 3.6 1993/10/09 15:01:32 kardel
* file structure unified
*
* Revision 3.5 1993/10/03 19:10:47 kardel
* restructured I/O handling
*
* Revision 3.4 1993/09/27 21:08:09 kardel
* utcoffset now in seconds
*
* Revision 3.3 1993/09/26 23:40:27 kardel
* new parse driver logic
*
* Revision 3.2 1993/07/09 11:37:19 kardel
* Initial restructured version + GPS support
*
* Revision 3.1 1993/07/06 10:00:22 kardel
* DCF77 driver goes generic...
*
*/
|
