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/**************************************************************************
* @licence app begin@
*
* SPDX-License-Identifier: MPL-2.0
*
* \ingroup GNSSService
* \brief Compliance Level: Abstract Component
* \copyright Copyright (C) 2012, BMW Car IT GmbH, Continental Automotive GmbH, PCA Peugeot Citroën, XS Embedded GmbH
*
* \license
* This Source Code Form is subject to the terms of the
* Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with
* this file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* @licence end@
**************************************************************************/
#ifndef INCLUDE_GNSS_METADATA
#define INCLUDE_GNSS_METADATA
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* The GNSS category introduces the concept that sensor information can also be derived information
* computed by combining several signals.
*/
typedef enum {
GNSS_CATEGORY_UNKNOWN, /**< Unknown category. Should not be used. */
GNSS_CATEGORY_LOGICAL, /**< A logical GNSS service can combine the signal of a GNSS receiver with additional sources. */
GNSS_CATEGORY_PHYSICAL /**< A physical GNSS service, i.e. a stand-alone GNSS receiver. */
} EGnssCategory;
/**
* TGnssMetaData:typeBits provides information about the sources used for the GNSS calculation
* It is a or'ed bitmask of the EGnssTypeBits values.
*/
typedef enum {
GNSS_TYPE_GNSS = 0x00000001, /**< GNSS receiver. Should always be set. */
GNSS_TYPE_ASSISTED = 0x00000002, /**< GNSS receiver with support for Assisted GNSS. E.g. ephemeris or clock data can be provided over network for faster TTFF */
GNSS_TYPE_SBAS = 0x00000004, /**< GNSS receiver with support for SBAS (satellite based augmentation system), such as WAAS, EGNOS, ... */
GNSS_TYPE_DGPS = 0x00000008, /**< GNSS receiver with support for differential GPS */
GNSS_TYPE_DR = 0x00000010, /**< GNSS receiver with built in dead reckoning sensor fusion */
} EGnssTypeBits;
/**
* The software platform provides the following information about the GNSS output signals.
* GNSS clients need the meta data information in order to correctly handle data provided by GNSS service and
* to adapt to the variation in the signal data delivery.
*/
typedef struct {
uint32_t version; /**< Version of the GNSS service. */
EGnssCategory category; /**< GNSS Category (Physical/Logical). */
uint32_t typeBits; /**< GNSS Type: combination of bits defined in @ref EGnssTypeBits. */
uint32_t cycleTime; /**< GNSS cycle time (update interval) in ms. 0 for irregular updates */
uint16_t numChannels; /**< Number of GNSS receiver channels for satellite signal reception. */
} TGnssMetaData;
/**
* Provide meta information about GNSS service.
* The meta data of a service provides information about it's name, version, type, subtype, sampling frequency etc.
* @param data Meta data content about the sensor service.
* @return True if meta data is available.
*/
bool gnssGetMetaData(TGnssMetaData *data);
#ifdef __cplusplus
}
#endif
#endif /* INCLUDE_GNSS_METADATA */
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