mbg_gps166.h

网络时间协议NTP 源码 版本v4.2.0b 该源码用于linux平台下

/*
 * /src/NTP/REPOSITORY/ntp4-dev/include/mbg_gps166.h,v 4.6 2005/10/07 22:11:56 kardel RELEASE_20051008_A
 *
 * mbg_gps166.h,v 4.6 2005/10/07 22:11:56 kardel RELEASE_20051008_A
 *
 * $Created: Sun Jul 20 09:20:50 1997 $
 *
 * File GPSSERIO.H Copyright (c) by Meinberg Funkuhren (www.meinberg.de)
 *
 * Linkage to PARSE:
 * Copyright (c) 1997-2005 by Frank Kardel <kardel <AT> ntp.org>
 *
 * 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.
 *
 */
#ifndef MBG_GPS166_H
#define MBG_GPS166_H


/***************************************************************************/
/*                                                                         */
/*   File:         GPSSERIO.H                    4.1                       */
/*                                                                         */
/*   Project:      Common C Library                                        */
/*                                                                         */
/*   Compiler:     Borland C++                                             */
/*                                                                         */
/*   Author:       M. Burnicki,  Meinberg Funkuhren                        */
/*                                                                         */
/*                                                                         */
/*   Description:                                                          */
/*     This file defines structures and codes to be used to access GPS166  */
/*     via its serial interface COM0. COM0 should be set to a high baud    */
/*     rate, default is 19200.                                             */
/*                                                                         */
/*     Standard GPS166 serial operation is to send a time string that is   */
/*     compatible with Meinberg UA31 or PZF535 DCF77 radio remote clocks.  */
/*     That string can be transmitted automatically once per second, once  */
/*     per minute or on request per ASCII '?'.                             */
/*                                                                         */
/*     Parameter setup or parameter readout works using blocks of binary   */
/*     data which have to be isolated from the standard string. A block of */
/*     data starts with a SOH code (ASCII Start Of Header, 0x01) followed  */
/*     by a message header with constant length and a data portion with    */
/*     variable length. The first field (cmd) of the message header holds  */
/*     the command code rsp. the type of data to be transmitted. The next  */
/*     field (len) gives the number of data bytes that are transmitted     */
/*     after the header. This number ranges from 0 to sizeof( MSG_DATA ).  */
/*     The third field (data_csum) holds a checksum of all data bytes and  */
/*     the last field of the header finally holds the checksum of the.     */
/*     header.                                                             */
/*                                                                         */
/***************************************************************************/

/* the control codes defined below are to be or'ed with a command/type code */

#define GPS_REQACK    0x8000   /* to GPS166: request acknowledge */
#define GPS_ACK       0x4000   /* from GPS166: acknowledge a command */
#define GPS_NACK      0x2000   /* from GPS166: error receiving command */

#define GPS_CTRL_MSK  0xF000   /* masks control code from command */


/* The codes below specify commands/types of data to be supplied to GPS166: */

/*                            GPS166 auto-message to host            */
/*