2019-04-12 15:43:53 +02:00
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/*
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* BLERemoteCharacteristic.h
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*
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* Created on: Jul 8, 2017
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* Author: kolban
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*/
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#ifndef COMPONENTS_CPP_UTILS_BLEREMOTECHARACTERISTIC_H_
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#define COMPONENTS_CPP_UTILS_BLEREMOTECHARACTERISTIC_H_
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#include "sdkconfig.h"
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#if defined(CONFIG_BT_ENABLED)
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#include <string>
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#include <esp_gattc_api.h>
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#include "BLERemoteService.h"
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#include "BLERemoteDescriptor.h"
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#include "BLEUUID.h"
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#include "FreeRTOS.h"
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class BLERemoteService;
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class BLERemoteDescriptor;
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typedef void (*notify_callback)(BLERemoteCharacteristic* pBLERemoteCharacteristic, uint8_t* pData, size_t length, bool isNotify);
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/**
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* @brief A model of a remote %BLE characteristic.
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*/
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class BLERemoteCharacteristic {
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public:
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~BLERemoteCharacteristic();
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// Public member functions
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bool canBroadcast();
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bool canIndicate();
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bool canNotify();
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bool canRead();
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bool canWrite();
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bool canWriteNoResponse();
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BLERemoteDescriptor* getDescriptor(BLEUUID uuid);
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std::map<std::string, BLERemoteDescriptor*>* getDescriptors();
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uint16_t getHandle();
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BLEUUID getUUID();
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std::string readValue();
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uint8_t readUInt8();
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uint16_t readUInt16();
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uint32_t readUInt32();
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2019-10-06 16:28:53 +02:00
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float readFloat();
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2019-04-12 15:43:53 +02:00
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void registerForNotify(notify_callback _callback, bool notifications = true);
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void writeValue(uint8_t* data, size_t length, bool response = false);
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void writeValue(std::string newValue, bool response = false);
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void writeValue(uint8_t newValue, bool response = false);
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std::string toString();
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uint8_t* readRawData();
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private:
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BLERemoteCharacteristic(uint16_t handle, BLEUUID uuid, esp_gatt_char_prop_t charProp, BLERemoteService* pRemoteService);
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friend class BLEClient;
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friend class BLERemoteService;
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friend class BLERemoteDescriptor;
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// Private member functions
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void gattClientEventHandler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t* evtParam);
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BLERemoteService* getRemoteService();
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void removeDescriptors();
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void retrieveDescriptors();
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// Private properties
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BLEUUID m_uuid;
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esp_gatt_char_prop_t m_charProp;
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uint16_t m_handle;
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BLERemoteService* m_pRemoteService;
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FreeRTOS::Semaphore m_semaphoreReadCharEvt = FreeRTOS::Semaphore("ReadCharEvt");
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FreeRTOS::Semaphore m_semaphoreRegForNotifyEvt = FreeRTOS::Semaphore("RegForNotifyEvt");
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FreeRTOS::Semaphore m_semaphoreWriteCharEvt = FreeRTOS::Semaphore("WriteCharEvt");
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std::string m_value;
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uint8_t *m_rawData;
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notify_callback m_notifyCallback;
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// We maintain a map of descriptors owned by this characteristic keyed by a string representation of the UUID.
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std::map<std::string, BLERemoteDescriptor*> m_descriptorMap;
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}; // BLERemoteCharacteristic
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#endif /* CONFIG_BT_ENABLED */
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#endif /* COMPONENTS_CPP_UTILS_BLEREMOTECHARACTERISTIC_H_ */
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