xref: /drivers/interface/location/gnss/v1_0/IGnssInterface.idl (revision c5e268c6)

/*
 * Copyright (c) 2022 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * @addtogroup HdiGnss
 * @{
 *
 * @brief Provides unified APIs for GNSS services to access GNSS drivers.
 *
 * A GNSS service can obtain a GNSS driver object or agent and then call APIs provided by this object or agent to
 * access GNSS devices, thereby Start the GNSS chip, start the navigation,
 * set the GNSS working mode, inject reference information, obtain the positioning result, obtain the nmea,
 * obtain the satellite status information, and obtain the cache location information.
 *
 * @since 3.2
 */

/*
 * @file IGnssInterface.idl
 *
 * @brief Declares the APIs provided by the GNSS module for Start the GNSS chip, start the navigation,
 * set the GNSS working mode, inject reference information, Delete auxiliary data, inject PGNSS data,
 * obtain the number of GNSS cache locations, and obtain all cache locations.
 *
 * @since 3.2
 * @version 1.0
 */

package ohos.hdi.location.gnss.v1_0;

import ohos.hdi.location.gnss.v1_0.IGnssCallback;
import ohos.hdi.location.gnss.v1_0.GnssTypes;

/*
 * @brief Defines the functions for performing basic operations on GNSS.
 *
 * The functions include  Start the GNSS chip, start the navigation,
 * set the GNSS working mode, inject reference information, Delete auxiliary data, inject PGNSS data,
 * obtain the number of GNSS cache locations, and obtain all cache locations.
 *
 * @since 3.2
 */
interface IGnssInterface {
    /*
     * @brief Setting GNSS configuration parameters.
     *
     * @param para Indicates GNSS configuration parameters, including basic GNSS parameters and GNSS cache
     * function configuration parameters. For details, see {@link GnssConfigPara}.
     * @return Returns <b>0</b> If the setting is successful; returns a negative value otherwise.
     *
     * @since 3.2
     * @version 1.0
     */
    SetGnssConfigPara([in] struct GnssConfigPara para);

    /*
     * @brief Enable the GNSS module and transmit the callback of the upper layer to the GNSS module.
     *
     * @param callback Indicates Callback function sent by the upper layer to the GNSS driver. The GNSS driver returns
     * location results and satellite status information by the callbacks. For details, see {@link IGnssCallback}.
     * @return Returns <b>0</b> if the GNSS is successfully enabled; returns a negative value otherwise.
     *
     * @since 3.2
     * @version 1.0
     */
    EnableGnss([in] IGnssCallback callbackObj);

    /*
     * @brief Disable the GNSS module.
     *
     * @return Returns <b>0</b> if the GNSS is successfully disabled; returns a negative value otherwise.
     *
     * @since 3.2
     * @version 1.0
     */
    DisableGnss();

    /*
     * @brief Start the navigation function.
     *
     * @param type Indicates the GNSS startup type, which is used to distinguish between common GNSS positioning
     * and GNSS caching function. For details, see {@link GnssStartType}.
     * @return Returns <b>0</b> if the GNSS navigation is successfully started; returns a negative value otherwise.
     *
     * @since 3.2
     * @version 1.0
     */
    StartGnss([in] enum GnssStartType type);

    /*
     * @brief Stop the navigation function.
     *
     * @param type Indicates the GNSS startup type, which is used to distinguish between common GNSS positioning
     * and GNSS caching function. For details, see {@link GnssStartType}.
     * @return Returns <b>0</b> if the GNSS navigation is successfully stopped; returns a negative value otherwise.
     *
     * @since 3.2
     * @version 1.0
     */
    StopGnss([in] enum GnssStartType type);

    /*
     * @brief Inject reference information to the GNSS module.
     *
     * @param refInfo Indicates the GNSS reference information structure, including the reference time and reference
     * location. For details, see {@link GnssRefInfo}.
     * @return Returns <b>0</b> if ingestion succeeded; returns a negative value otherwise.
     *
     * @since 3.2
     * @version 1.0
     */
    SetGnssReferenceInfo([in] struct GnssRefInfo refInfo);

    /*
     * @brief Delete the specified auxiliary data.
     *
     * @param data Indicates the type of auxiliary data to be deleted. For details, see {@link GnssAuxiliaryData}.
     * @return Returns <b>0</b> if deleted successfully; returns a negative value otherwise.
     *
     * @since 3.2
     * @version 1.0
     */
    DeleteAuxiliaryData([in] enum GnssAuxiliaryData data);

    /*
     * @brief Ingesting Predict Gnss Data.
     *
     * @param data Indicates Predict Gnss Data.
     * @return Returns <b>0</b> if ingesting successfully; returns a negative value otherwise.
     *
     * @since 3.2
     * @version 1.0
     */
    SetPredictGnssData([in] String data);

    /*
     * @brief Obtain the number of locations that can be cached by the GNSS module.
     *
     * @param size Indicates an output parameter used to receive the number of locations that can be
     * cached by the GNSS module.
     * @return Returns <b>0</b> if obtain size successfully; returns a negative value otherwise.
     *
     * @since 3.2
     * @version 1.0
     */
    GetCachedGnssLocationsSize([out] int size);

    /*
     * @brief Request to obtain all the location information in the GNSS cache at a time and clear the cache buffer.
     * The cache location is reported through callback.
     *
     * @return Returns <b>0</b> if sending request successfully; returns a negative value otherwise.
     *
     * @since 3.2
     * @version 1.0
     */
    GetCachedGnssLocations();
}