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+/*
+ * Copyright (c) 2021 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 Sensor
+ * @{
+ *
+ * @brief Provides unified APIs for sensor services to access sensor drivers.
+ *
+ * A sensor service can obtain a sensor driver object or agent and then call APIs provided by this object or agent to
+ * access different types of sensor devices based on the sensor IDs, thereby obtaining sensor information,
+ * subscribing to or unsubscribing from sensor data, enabling or disabling a sensor,
+ * setting the sensor data reporting mode, and setting sensor options such as the accuracy and measurement range.
+ *
+ * @since 3.1
+ */
+
+/**
+ * @file sensor_if.h
+ *
+ * @brief Declares the APIs provided by the sensor module for obtaining sensor information, subscribing to or
+ * unsubscribing from sensor data, enabling or disabling a sensor, setting the sensor data reporting mode,
+ * and setting sensor options such as the accuracy and measurement range.
+ *
+ * @since 3.1
+ * @version 1.0
+ */
+
+#ifndef SENSOR_IF_H
+#define SENSOR_IF_H
+
+#include "sensor_type.h"
+
+#ifdef __cplusplus
+#if __cplusplus
+extern "C" {
+#endif
+#endif /* __cplusplus */
+
+/**
+ * @brief Defines the functions for performing basic operations on sensors.
+ *
+ * The operations include obtaining sensor information, subscribing to or unsubscribing from sensor data,
+ * enabling or disabling a sensor, setting the sensor data reporting mode, and setting sensor options such as
+ * the accuracy and measurement range.
+ */
+struct SensorInterface {
+    /**
+     * @brief Obtains information about all sensors in the system.
+     *
+     * @param sensorInfo Indicates the double pointer to the information about all sensors in the system.
+     * The information about a sensor generally includes the sensor name, sensor vendor, firmware version,
+     * hardware version, sensor type ID, sensor ID, maximum measurement range, accuracy, and power. For details,
+     * see {@link SensorInformation}.
+     * @param count Indicates the pointer to the total number of sensors in the system.
+     * 
+     * @return 0 if the information is obtained.
+     * @return Returns a negative value otherwise.
+     * 
+     * @since 3.1
+     * @version 1.0
+     */
+    int32_t (*GetAllSensors)(struct SensorInformation **sensorInfo, int32_t *count);
+
+    /**
+     * @brief Enables the sensor available in the sensor list based on the specified sensor ID.
+     * The subscriber can obtain the sensor data only after the sensor is enabled.
+     *
+     * @param sensorId Indicates the sensor ID. For details, see {@link SensorTypeTag}.
+     *
+     * @return Returns <b>0</b> if the sensor is successfully enabled.
+     * @return Returns a negative value otherwise.
+     *
+     * @since 3.1
+     * @version 1.0
+     */
+    int32_t (*Enable)(int32_t sensorId);
+
+    /**
+     * @brief Disables an enabled sensor.
+     *
+     * @param sensorId Indicates the sensor ID. For details, see {@link SensorTypeTag}.
+     *
+     * @return Returns <b>0</b> if the sensor is successfully disabled.
+     * @return Returns a negative value otherwise.
+     *
+     * @since 3.1
+     * @version 1.0
+     */
+    int32_t (*Disable)(int32_t sensorId);
+
+    /**
+     * @brief Sets the data sampling interval and data reporting interval for the specified sensor.
+     *
+     * @param sensorId Indicates the sensor ID. For details, see {@link SensorTypeTag}.
+     * @param samplingInterval Indicates the sensor data sampling interval to set, in nanoseconds.
+     * @param reportInterval Indicates the sensor data reporting interval, in nanoseconds.
+     *
+     * @return Returns <b>0</b> if the setting is successful.
+     * @return Returns a negative value otherwise.
+     *
+     * @since 3.1
+     * @version 1.0
+     */
+    int32_t (*SetBatch)(int32_t sensorId, int64_t samplingInterval, int64_t reportInterval);
+
+    /**
+     * @brief Sets the data reporting mode for the specified sensor.
+     *
+     * @param sensorId Indicates the sensor ID. For details, see {@link SensorTypeTag}.
+     * @param mode Indicates the data reporting mode to set. For details, see {@link SensorModeType}.
+     *
+     * @return Returns <b>0</b> if the sensor data reporting mode is successfully set.
+     * @return Returns a negative value otherwise.
+     *
+     * @since 3.1
+     * @version 1.0
+     */
+    int32_t (*SetMode)(int32_t sensorId, int32_t mode);
+
+    /**
+     * @brief Sets options for the specified sensor, including its measurement range and accuracy.
+     *
+     * @param sensorId Indicates the sensor ID. For details, see {@link SensorTypeTag}.
+     * @param option Indicates the options to set, such as the measurement range and accuracy.
+     *
+     * @return Returns <b>0</b> if the options are successfully set.
+     * @return Returns a negative value otherwise.
+     *
+     * @since 3.1
+     * @version 1.0
+     */
+    int32_t (*SetOption)(int32_t sensorId, uint32_t option);
+
+    /**
+     * @brief Registers the callback for reporting sensor data to the subscriber.
+     *
+     * @param groupId 硬件服务分组id，值为0，代表传统sensor服务组号，值为1，代表医学sensor服务组号，对于传统
+     * sensor服务，sensorId 值的范围为128-160，其他范围为医学sensor服务。回调函数只需要成功注册一次，不需要重复注册。
+     * @param cb 需要注册的回调函数指针。详情看 {@link RecordDataCallback}。
+     *
+     * @return 0 表示注册回调函数成功。
+     * @return 负值 表示注册回调函数失败。
+     *
+     * @since 3.1
+     * @version 1.0
+     */
+    int32_t (*Register)(int32_t groupId, RecordDataCallback cb);
+
+    /**
+     * @brief Deregisters the callback for reporting sensor data.
+     *
+     * @param groupId 硬件服务分组id，值为0，代表传统sensor服务组号，值为1，代表医学sensor服务组号，
+     * 对于传统sensor服务，sensorId 值的范围为128-160，其他范围为医学sensor服务。回调函数只需要成功取消注册一次，不需要
+     * 重复取消注册。
+     * @param cb 需要取消注册的回调函数指针。详情看 {@link RecordDataCallback}。
+     *
+     * @return 0 表示取消注册回调函数成功。
+     * @return 负值 表示取消注册回调函数失败。
+     *
+     * @since 3.1
+     * @version 1.0
+     */
+    int32_t (*Unregister)(int32_t groupId, RecordDataCallback cb);
+};
+
+/**
+ * @brief Creates a <b>SensorInterface</b> instance.
+ *
+ * @param sensorId Indicates the sensor ID. For details, see {@link SensorTypeTag}.
+ * You can use the instance to obtain sensor information, subscribe to or unsubscribe from sensor data,
+ * enable or disable a sensor, set the sensor data reporting mode, and set the sensor options such as the accuracy and
+ * measurement range.
+ * 
+ * @param cb Indicates the callback to register. For details, see {@link RecordDataCallback}.
+ * 
+ * @return Returns a non-zero value if the instance is successfully created.
+ * @return Returns <b>0</b> otherwise.
+ * 
+ * @since 3.1
+ * @version 1.0
+ */
+const struct SensorInterface *NewSensorInterfaceInstance(void);
+
+/**
+ * @brief Releases the <b>SensorInterface</b> instance.
+ *
+ * @return Returns <b>0</b> if the instance is successfully released;
+ * @return Returns a negative value otherwise.
+ *
+ * @since 3.1
+ * @version 1.0
+ */
+int32_t FreeSensorInterfaceInstance(void);
+
+#ifdef __cplusplus
+#if __cplusplus
+}
+#endif
+#endif /* __cplusplus */
+
+#endif /* SENSOR_IF_H */
+/** @} */