Annotation of embedaddon/ntp/ntpd/refclock_palisade.h, revision 1.1.1.1
1.1 misho 1: /*
2: * This software was developed by the Software and Component Technologies
3: * group of Trimble Navigation, Ltd.
4: *
5: * Copyright (c) 1997, 1998, 1999, 2000 Trimble Navigation Ltd.
6: * All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by Trimble Navigation, Ltd.
19: * 4. The name of Trimble Navigation Ltd. may not be used to endorse or
20: * promote products derived from this software without specific prior
21: * written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY TRIMBLE NAVIGATION LTD. ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL TRIMBLE NAVIGATION LTD. BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: */
35:
36: /*
37: * refclock_palisade - clock driver for the Trimble Palisade GPS
38: * timing receiver
39: *
40: * For detailed information on this program, please refer to the html
41: * Refclock 29 page accompanying the NTP distribution.
42: *
43: * for questions / bugs / comments, contact:
44: * sven_dietrich@trimble.com
45: *
46: * Sven-Thorsten Dietrich
47: * 645 North Mary Avenue
48: * Post Office Box 3642
49: * Sunnyvale, CA 94088-3642
50: *
51: */
52:
53: #ifndef _REFCLOCK_PALISADE_H
54: #define _REFCLOCK_PALISADE_H
55:
56: #ifdef HAVE_CONFIG_H
57: #include "config.h"
58: #endif
59:
60: #if defined HAVE_SYS_MODEM_H
61: #include <sys/modem.h>
62: #ifndef __QNXNTO__
63: #define TIOCMSET MCSETA
64: #define TIOCMGET MCGETA
65: #define TIOCM_RTS MRTS
66: #endif
67: #endif
68:
69: #ifdef HAVE_TERMIOS_H
70: # ifdef TERMIOS_NEEDS__SVID3
71: # define _SVID3
72: # endif
73: # include <termios.h>
74: # include <sys/stat.h>
75: # ifdef TERMIOS_NEEDS__SVID3
76: # undef _SVID3
77: # endif
78: #endif
79:
80: #ifdef HAVE_SYS_IOCTL_H
81: #include <sys/ioctl.h>
82: #endif
83:
84: #include "ntpd.h"
85: #include "ntp_io.h"
86: #include "ntp_control.h"
87: #include "ntp_refclock.h"
88: #include "ntp_unixtime.h"
89: #include "ntp_stdlib.h"
90:
91: /*
92: * GPS Definitions
93: */
94: #define DESCRIPTION "Trimble Palisade GPS" /* Long name */
95: #define PRECISION (-20) /* precision assumed (about 1 us) */
96: #define REFID "GPS\0" /* reference ID */
97: #define TRMB_MINPOLL 4 /* 16 seconds */
98: #define TRMB_MAXPOLL 5 /* 32 seconds */
99:
100: /*
101: * I/O Definitions
102: */
103: #define DEVICE "/dev/palisade%d" /* device name and unit */
104: #define SPEED232 B9600 /* uart speed (9600 baud) */
105:
106: /*
107: * TSIP Report Definitions
108: */
109: #define LENCODE_8F0B 74 /* Length of TSIP 8F-0B Packet & header */
110: #define LENCODE_NTP 22 /* Length of Palisade NTP Packet */
111:
112: #define LENCODE_8FAC 68 /* Length of Thunderbolt 8F-AC Position Packet*/
113: #define LENCODE_8FAB 17 /* Length of Thunderbolt Primary Timing Packet*/
114:
115: /* Allowed Sub-Packet ID's */
116: #define PACKET_8F0B 0x0B
117: #define PACKET_NTP 0xAD
118:
119: /* Thunderbolt Packets */
120: #define PACKET_8FAC 0xAC /* Supplementary Thunderbolt Time Packet */
121: #define PACKET_8FAB 0xAB /* Primary Thunderbolt Time Packet */
122: #define PACKET_6D 0x6D /* Supplementary Thunderbolt Tracking Stats */
123: #define PACKET_41 0x41 /* Thunderbolt I dont know what this packet is, it's not documented on my manual*/
124:
125: /* Acutime Packets */
126: #define PACKET_41A 0x41 /* GPS time */
127: #define PACKET_46 0x46 /* Receiver Health */
128:
129: #define DLE 0x10
130: #define ETX 0x03
131:
132: /* parse states */
133: #define TSIP_PARSED_EMPTY 0
134: #define TSIP_PARSED_FULL 1
135: #define TSIP_PARSED_DLE_1 2
136: #define TSIP_PARSED_DATA 3
137: #define TSIP_PARSED_DLE_2 4
138:
139: /*
140: * Leap-Insert and Leap-Delete are encoded as follows:
141: * PALISADE_UTC_TIME set and PALISADE_LEAP_PENDING set: INSERT leap
142: */
143:
144: #define PALISADE_LEAP_INPROGRESS 0x08 /* This is the leap flag */
145: #define PALISADE_LEAP_WARNING 0x04 /* GPS Leap Warning (see ICD-200) */
146: #define PALISADE_LEAP_PENDING 0x02 /* Leap Pending (24 hours) */
147: #define PALISADE_UTC_TIME 0x01 /* UTC time available */
148:
149: #define mb(_X_) (up->rpt_buf[(_X_ + 1)]) /* shortcut for buffer access */
150:
151: /* Conversion Definitions */
152: #define GPS_PI (3.1415926535898)
153: #define R2D (180.0/GPS_PI)
154:
155: /*
156: * Structure for build data packets for send (thunderbolt uses it only)
157: * taken from Markus Prosch
158: */
159: struct packettx
160: {
161: short size;
162: u_char *data;
163: };
164:
165: /*
166: * Palisade unit control structure.
167: */
168: struct palisade_unit {
169: short unit; /* NTP refclock unit number */
170: int polled; /* flag to detect noreplies */
171: char leap_status; /* leap second flag */
172: char rpt_status; /* TSIP Parser State */
173: short rpt_cnt; /* TSIP packet length so far */
174: char rpt_buf[BMAX]; /* packet assembly buffer */
175: int type; /* Clock mode type */
176: };
177:
178: /*
179: * Function prototypes
180: */
181:
182: static int palisade_start (int, struct peer *);
183: static void palisade_shutdown (int, struct peer *);
184: static void palisade_receive (struct peer *);
185: static void palisade_poll (int, struct peer *);
186: static void palisade_io (struct recvbuf *);
187: int palisade_configure (int, struct peer *);
188: int TSIP_decode (struct peer *);
189: long HW_poll (struct refclockproc *);
190: float getfloat (u_char *);
191: double getdbl (u_char *);
192: short getint (u_char *);
193: long getlong (u_char *);
194:
195:
196: #ifdef PALISADE_SENDCMD_RESURRECTED
197: static void sendcmd (struct packettx *buffer, int c);
198: #endif
199: static void sendsupercmd (struct packettx *buffer, int c1, int c2);
200: static void sendbyte (struct packettx *buffer, int b);
201: static void sendint (struct packettx *buffer, int a);
202: static int sendetx (struct packettx *buffer, int fd);
203: static void init_thunderbolt (int fd);
204: static void init_acutime (int fd);
205: #endif /* PALISADE_H */
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