ble_environmental_data_provider.h

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/*
 * Copyright (c) 2023 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 */
 
#pragma once
 
#include "ble_bridged_device.h"
#include "ble_connectivity_manager.h"
#include "bridged_device_data_provider.h"
 
class BleEnvironmentalDataProvider : public Nrf::BLEBridgedDeviceProvider {
public:
        explicit BleEnvironmentalDataProvider(UpdateAttributeCallback updateCallback, InvokeCommandCallback commandCallback) : Nrf::BLEBridgedDeviceProvider(updateCallback, commandCallback) {}
        ~BleEnvironmentalDataProvider() { Unsubscribe(); }
 
        void Init() override;
        void NotifyUpdateState(chip::ClusterId clusterId, chip::AttributeId attributeId, void *data,
                               size_t dataSize) override;
        CHIP_ERROR UpdateState(chip::ClusterId clusterId, chip::AttributeId attributeId, uint8_t *buffer) override;
        const bt_uuid *GetServiceUuid() override;
        int ParseDiscoveredData(bt_gatt_dm *discoveredData) override;
 
private:
        static constexpr uint32_t kMeasurementsIntervalMs{ CONFIG_BRIDGE_BLE_DEVICE_POLLING_INTERVAL };
 
        void StartHumidityTimer();
        void StopHumidityTimer() { k_timer_stop(&mHumidityTimer); }
        void Subscribe();
        void Unsubscribe();
        bool CheckSubscriptionParameters(bt_gatt_subscribe_params *params);
 
        CHIP_ERROR ParseTemperatureCharacteristic(bt_gatt_dm *discoveredData);
        CHIP_ERROR ParseHumidityCharacteristic(bt_gatt_dm *discoveredData);
 
        static uint8_t GattTemperatureNotifyCallback(bt_conn *conn, bt_gatt_subscribe_params *params, const void *data,
                                                     uint16_t length);
        static uint8_t GattHumidityNotifyCallback(bt_conn *conn, bt_gatt_subscribe_params *params, const void *data,
                                                  uint16_t length);
        static void NotifyTemperatureAttributeChange(intptr_t context);
        static void NotifyHumidityAttributeChange(intptr_t context);
 
        static void ReadGATTHumidity(intptr_t context);
        static void HumidityTimerTimeoutCallback(k_timer *timer);
        static uint8_t HumidityGATTReadCallback(bt_conn *conn, uint8_t att_err, bt_gatt_read_params *params,
                                                const void *data, uint16_t read_len);
 
        uint16_t mTemperatureValue{};
        uint16_t mHumidityValue{};
 
        uint16_t mTemperatureCharacteristicHandle{};
        uint16_t mHumidityCharacteristicHandle{};
 
        bt_gatt_subscribe_params mGattTemperatureSubscribeParams{};
        bt_gatt_subscribe_params mGattHumiditySubscribeParams{};
 
        uint16_t mCccTemperatureHandle{};
        uint16_t mCccHumidityHandle{};
 
        k_timer mHumidityTimer;
 
        static bt_gatt_read_params sHumidityReadParams;
};