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/****************************************************************************
*
* Copyright (C) 2014 PX4 Development Team. All rights reserved.
* Author: @author Thomas Gubler <thomasgubler@student.ethz.ch>
* @author Julian Oes <joes@student.ethz.ch>
* @author Lorenz Meier <lm@inf.ethz.ch>
*
* 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 PX4 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 COPYRIGHT HOLDERS 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
* COPYRIGHT OWNER 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.
*
****************************************************************************/
/**
* @file satellite_info.h
* Definition of the GNSS satellite info uORB topic.
*/
#ifndef TOPIC_SAT_INFO_H_
#define TOPIC_SAT_INFO_H_
#include <stdint.h>
#include "../uORB.h"
/**
* @addtogroup topics
* @{
*/
/**
* GNSS Satellite Info.
*/
#define SAT_INFO_MAX_SATELLITES 20
struct satellite_info_s {
uint64_t timestamp; /**< Timestamp of satellite info */
uint8_t count; /**< Number of satellites in satellite info */
uint8_t svid[SAT_INFO_MAX_SATELLITES]; /**< Space vehicle ID [1..255], see scheme below */
uint8_t used[SAT_INFO_MAX_SATELLITES]; /**< 0: Satellite not used, 1: used for navigation */
uint8_t elevation[SAT_INFO_MAX_SATELLITES]; /**< Elevation (0: right on top of receiver, 90: on the horizon) of satellite */
uint8_t azimuth[SAT_INFO_MAX_SATELLITES]; /**< Direction of satellite, 0: 0 deg, 255: 360 deg. */
uint8_t snr[SAT_INFO_MAX_SATELLITES]; /**< dBHz, Signal to noise ratio of satellite C/N0, range 0..99, zero when not tracking this satellite. */
};
/**
* NAV_SVINFO space vehicle ID (svid) scheme according to u-blox protocol specs
* u-bloxM8-V15_ReceiverDescriptionProtocolSpec_Public_(UBX-13003221).pdf
*
* GPS 1-32
* SBAS 120-158
* Galileo 211-246
* BeiDou 159-163, 33-64
* QZSS 193-197
* GLONASS 65-96, 255
*
*/
/**
* @}
*/
/* register this as object request broker structure */
ORB_DECLARE(satellite_info);
#endif
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