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esp-nimble-cpp/src/NimBLERemoteCharacteristic.h
2024-12-12 20:41:04 -07:00

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C++

/*
* Copyright 2020-2024 Ryan Powell <ryan@nable-embedded.io> and
* esp-nimble-cpp, NimBLE-Arduino contributors.
*
* 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.
*/
#ifndef NIMBLE_CPP_REMOTE_CHARACTERISTIC_H_
#define NIMBLE_CPP_REMOTE_CHARACTERISTIC_H_
#include "nimconfig.h"
#if defined(CONFIG_BT_ENABLED) && defined(CONFIG_BT_NIMBLE_ROLE_CENTRAL)
# include "NimBLERemoteValueAttribute.h"
# include <vector>
# include <functional>
class NimBLERemoteService;
class NimBLERemoteDescriptor;
/**
* @brief A model of a remote BLE characteristic.
*/
class NimBLERemoteCharacteristic : public NimBLERemoteValueAttribute {
public:
std::string toString() const;
const NimBLERemoteService* getRemoteService() const;
void deleteDescriptors() const;
size_t deleteDescriptor(const NimBLEUUID& uuid) const;
bool canBroadcast() const;
bool canRead() const;
bool canWriteNoResponse() const;
bool canWrite() const;
bool canNotify() const;
bool canIndicate() const;
bool canWriteSigned() const;
bool hasExtendedProps() const;
NimBLEClient* getClient() const override;
typedef std::function<void(NimBLERemoteCharacteristic* pBLERemoteCharacteristic, uint8_t* pData, size_t length, bool isNotify)> notify_callback;
bool subscribe(bool notifications = true, const notify_callback notifyCallback = nullptr, bool response = true) const;
bool unsubscribe(bool response = true) const;
std::vector<NimBLERemoteDescriptor*>::iterator begin() const;
std::vector<NimBLERemoteDescriptor*>::iterator end() const;
NimBLERemoteDescriptor* getDescriptor(const NimBLEUUID& uuid) const;
const std::vector<NimBLERemoteDescriptor*>& getDescriptors(bool refresh = false) const;
private:
friend class NimBLEClient;
friend class NimBLERemoteService;
NimBLERemoteCharacteristic(const NimBLERemoteService* pRemoteService, const ble_gatt_chr* chr);
~NimBLERemoteCharacteristic();
bool setNotify(uint16_t val, notify_callback notifyCallback = nullptr, bool response = true) const;
bool retrieveDescriptors(const NimBLEUUID* uuidFilter = nullptr) const;
static int descriptorDiscCB(
uint16_t conn_handle, const ble_gatt_error* error, uint16_t chr_val_handle, const ble_gatt_dsc* dsc, void* arg);
const NimBLERemoteService* m_pRemoteService{nullptr};
uint8_t m_properties{0};
mutable notify_callback m_notifyCallback{nullptr};
mutable std::vector<NimBLERemoteDescriptor*> m_vDescriptors{};
}; // NimBLERemoteCharacteristic
#endif /* CONFIG_BT_ENABLED && CONFIG_BT_NIMBLE_ROLE_CENTRAL */
#endif /* NIMBLE_CPP_REMOTE_CHARACTERISTIC_H_ */