1/*
2 * /src/NTP/ntp4-dev/libparse/clk_rcc8000.c,v 4.9 2004/11/14 15:29:41 kardel RELEASE_20050508_A
3 *
4 * clk_rcc8000.c,v 4.9 2004/11/14 15:29:41 kardel RELEASE_20050508_A
5 *
6 * Radiocode Clocks Ltd RCC 8000 Intelligent Off-Air Master Clock support
7 *
8 * Created by R.E.Broughton from clk_trimtaip.c
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 *
14 */
15
16#if HAVE_CONFIG_H
17# include <config.h>
18#endif
19
20#if defined(REFCLOCK) && defined(CLOCK_PARSE) && defined(CLOCK_RCC8000)
21
22#include "ntp_fp.h"
23#include "ntp_unixtime.h"
24#include "ntp_calendar.h"
25
26#include "parse.h"
27
28#ifndef PARSESTREAM
29#include "ntp_stdlib.h"
30#include <stdio.h>
31#else
32#include "sys/parsestreams.h"
33extern int printf (const char *, ...);
34#endif
35
36/* Type II Serial Output format
37 *
38 *	0000000000111111111122222222223	/ char
39 *	0123456789012345678901234567890	\ posn
40 *	HH:MM:SS.XYZ DD/MM/YY DDD W Prn   Actual
41 *      33 44 55 666 00 11 22       7     Parse
42 *        :  :  .      /  /          rn   Check
43 *     "15:50:36.534 30/09/94 273 5 A\x0d\x0a"
44 *
45 * DDD - Day of year number
46 *   W - Day of week number (Sunday is 0)
47 * P is the Status. See comment below for details.
48 */
49
50#define	O_USEC		O_WDAY
51static struct format rcc8000_fmt =
52{ { { 13, 2 }, {16, 2}, { 19, 2}, /* Day, Month, Year */
53    {  0, 2 }, { 3, 2}, {  6, 2}, /* Hour, Minute, Second */
54    {  9, 3 }, {28, 1}, {  0, 0}, /* uSec, Status (Valid,Reject,BST,Leapyear) */  },
55  (const unsigned char *)"  :  :  .      /  /          \r\n",
56  /*"15:50:36.534 30/09/94 273 5 A\x0d\x0a" */
57  0
58};
59
60static parse_cvt_fnc_t cvt_rcc8000;
61static parse_inp_fnc_t inp_rcc8000;
62
63clockformat_t clock_rcc8000 =
64{
65  inp_rcc8000,			/* no input handling */
66  cvt_rcc8000,			/* Radiocode clock conversion */
67  0,				/* no direct PPS monitoring */
68  (void *)&rcc8000_fmt,		/* conversion configuration */
69  "Radiocode RCC8000",
70  31,				/* string buffer */
71  0				/* no private data */
72};
73
74/* parse_cvt_fnc_t cvt_rcc8000 */
75static u_long
76cvt_rcc8000(
77	    unsigned char *buffer,
78	    int            size,
79	    struct format *format,
80	    clocktime_t   *clock_time,
81	    void          *local
82	    )
83{
84	if (!Strok(buffer, format->fixed_string)) return CVT_NONE;
85#define	OFFS(x) format->field_offsets[(x)].offset
86#define STOI(x, y) Stoi(&buffer[OFFS(x)], y, format->field_offsets[(x)].length)
87	if (	STOI(O_DAY,	&clock_time->day)	||
88		STOI(O_MONTH,	&clock_time->month)	||
89		STOI(O_YEAR,	&clock_time->year)	||
90		STOI(O_HOUR,	&clock_time->hour)	||
91		STOI(O_MIN,	&clock_time->minute)	||
92		STOI(O_SEC,	&clock_time->second)	||
93		STOI(O_USEC,	&clock_time->usecond)
94		) return CVT_FAIL|CVT_BADFMT;
95	clock_time->usecond *= 1000;
96
97	clock_time->utcoffset = 0;
98
99#define RCCP buffer[28]
100	/*
101	 * buffer[28] is the ASCII representation of a hex character ( 0 through F )
102	 *      The four bits correspond to:
103	 *      8 - Valid Time
104	 *      4 - Reject Code
105	 *      2 - British Summer Time (receiver set to emit GMT all year.)
106	 *      1 - Leap year
107	 */
108#define RCC8000_VALID  0x8
109#define RCC8000_REJECT 0x4
110#define RCC8000_BST    0x2
111#define RCC8000_LEAPY  0x1
112
113	clock_time->flags = 0;
114
115	if ( (RCCP >= '0' && RCCP <= '9') || (RCCP >= 'A' && RCCP <= 'F') )
116	{
117		register int flag;
118
119		flag = (RCCP >= '0' && RCCP <= '9' ) ?  RCCP - '0' : RCCP - 'A' + 10;
120
121		if (!(flag & RCC8000_VALID))
122		    clock_time->flags |= PARSEB_POWERUP;
123
124		clock_time->flags |= PARSEB_UTC; /* British special - guess why 8-) */
125
126		/* other flags not used */
127	}
128	return CVT_OK;
129}
130/*
131 * parse_inp_fnc_t inp_rcc8000
132 *
133 * grab data from input stream
134 */
135static u_long
136inp_rcc8000(
137	    parse_t      *parseio,
138	    char         ch,
139	    timestamp_t  *tstamp
140	  )
141{
142	unsigned int rtc;
143
144	parseprintf(DD_PARSE, ("inp_rcc8000(0x%p, 0x%x, ...)\n", (void*)parseio, ch));
145
146	switch (ch)
147	{
148	case '\n':
149		parseprintf(DD_PARSE, ("inp_rcc8000: EOL seen\n"));
150		if ((rtc = parse_addchar(parseio, ch)) == PARSE_INP_SKIP)
151			return parse_end(parseio);
152		else
153			return rtc;
154
155
156	default:
157		if (parseio->parse_index == 0) /* take sample at start of message */
158		{
159			parseio->parse_dtime.parse_stime = *tstamp; /* collect timestamp */
160		}
161		return parse_addchar(parseio, ch);
162	}
163}
164
165#else  /* not (REFCLOCK && CLOCK_PARSE && CLOCK_RCC8000) */
166int clk_rcc8000_bs;
167#endif  /* not (REFCLOCK && CLOCK_PARSE && CLOCK_RCC8000) */
168
169/*
170 * History:
171 *
172 * clk_rcc8000.c,v
173 * Revision 4.9  2004/11/14 15:29:41  kardel
174 * support PPSAPI, upgrade Copyright to Berkeley style
175 *
176 * Revision 4.6  1999/11/28 09:13:51  kardel
177 * RECON_4_0_98F
178 *
179 * Revision 4.5  1998/06/14 21:09:38  kardel
180 * Sun acc cleanup
181 *
182 * Revision 4.4  1998/06/13 12:05:02  kardel
183 * fix SYSV clock name clash
184 *
185 * Revision 4.3  1998/06/12 15:22:29  kardel
186 * fix prototypes
187 *
188 * Revision 4.2  1998/06/12 09:13:25  kardel
189 * conditional compile macros fixed
190 * printf prototype
191 *
192 * Revision 4.1  1998/05/24 09:39:53  kardel
193 * implementation of the new IO handling model
194 *
195 * Revision 4.0  1998/04/10 19:45:30  kardel
196 * Start 4.0 release version numbering
197 *
198 * from V3 3.5 log info deleted 1998/04/11 kardel
199 */
200