sensor/patchedBLE/src/BLERemoteCharacteristic.h


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