7b5cd47d07
* Set IDF to v3.2 * Remove BLE submodule * Add BLE lib source * Update Camera example to support OV3660
78 lines
2.8 KiB
C++
78 lines
2.8 KiB
C++
/*
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* BLEDescriptor.h
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*
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* Created on: Jun 22, 2017
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* Author: kolban
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*/
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#ifndef COMPONENTS_CPP_UTILS_BLEDESCRIPTOR_H_
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#define COMPONENTS_CPP_UTILS_BLEDESCRIPTOR_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 "BLEUUID.h"
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#include "BLECharacteristic.h"
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#include <esp_gatts_api.h>
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#include "FreeRTOS.h"
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class BLEService;
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class BLECharacteristic;
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class BLEDescriptorCallbacks;
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/**
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* @brief A model of a %BLE descriptor.
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*/
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class BLEDescriptor {
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public:
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BLEDescriptor(const char* uuid, uint16_t max_len = 100);
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BLEDescriptor(BLEUUID uuid, uint16_t max_len = 100);
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virtual ~BLEDescriptor();
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uint16_t getHandle(); // Get the handle of the descriptor.
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size_t getLength(); // Get the length of the value of the descriptor.
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BLEUUID getUUID(); // Get the UUID of the descriptor.
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uint8_t* getValue(); // Get a pointer to the value of the descriptor.
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void handleGATTServerEvent(
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esp_gatts_cb_event_t event,
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esp_gatt_if_t gatts_if,
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esp_ble_gatts_cb_param_t* param);
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void setAccessPermissions(esp_gatt_perm_t perm); // Set the permissions of the descriptor.
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void setCallbacks(BLEDescriptorCallbacks* pCallbacks); // Set callbacks to be invoked for the descriptor.
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void setValue(uint8_t* data, size_t size); // Set the value of the descriptor as a pointer to data.
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void setValue(std::string value); // Set the value of the descriptor as a data buffer.
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std::string toString(); // Convert the descriptor to a string representation.
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private:
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friend class BLEDescriptorMap;
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friend class BLECharacteristic;
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BLEUUID m_bleUUID;
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uint16_t m_handle;
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BLEDescriptorCallbacks* m_pCallback;
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BLECharacteristic* m_pCharacteristic;
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esp_gatt_perm_t m_permissions = ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE;
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FreeRTOS::Semaphore m_semaphoreCreateEvt = FreeRTOS::Semaphore("CreateEvt");
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esp_attr_value_t m_value;
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void executeCreate(BLECharacteristic* pCharacteristic);
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void setHandle(uint16_t handle);
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}; // BLEDescriptor
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/**
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* @brief Callbacks that can be associated with a %BLE descriptors to inform of events.
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*
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* When a server application creates a %BLE descriptor, we may wish to be informed when there is either
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* a read or write request to the descriptors value. An application can register a
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* sub-classed instance of this class and will be notified when such an event happens.
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*/
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class BLEDescriptorCallbacks {
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public:
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virtual ~BLEDescriptorCallbacks();
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virtual void onRead(BLEDescriptor* pDescriptor);
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virtual void onWrite(BLEDescriptor* pDescriptor);
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};
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#endif /* CONFIG_BT_ENABLED */
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#endif /* COMPONENTS_CPP_UTILS_BLEDESCRIPTOR_H_ */
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