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https://github.com/h2zero/esp-nimble-cpp.git
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101 lines
3.4 KiB
C++
101 lines
3.4 KiB
C++
/*
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* NimBLEDescriptor.h
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*
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* Created: on March 10, 2020
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* Author H2zero
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*
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* Originally:
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*
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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 MAIN_NIMBLEDESCRIPTOR_H_
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#define MAIN_NIMBLEDESCRIPTOR_H_
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#include "sdkconfig.h"
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#if defined(CONFIG_BT_ENABLED)
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#include "NimBLECharacteristic.h"
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#include "NimBLEUUID.h"
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#include "FreeRTOS.h"
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#include <string>
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typedef struct
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{
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uint16_t attr_max_len; /*!< attribute max value length */
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uint16_t attr_len; /*!< attribute current value length */
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uint8_t *attr_value; /*!< the pointer to attribute value */
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} attr_value_t;
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typedef attr_value_t esp_attr_value_t; /*!< compatibility for esp32 */
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class NimBLEService;
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class NimBLECharacteristic;
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class NimBLEDescriptorCallbacks;
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/**
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* @brief A model of a %BLE descriptor.
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*/
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class NimBLEDescriptor {
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public:
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virtual ~NimBLEDescriptor();
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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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NimBLEUUID 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 setAccessPermissions(uint8_t perm); // Set the permissions of the descriptor.
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void setCallbacks(NimBLEDescriptorCallbacks* 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 NimBLEDescriptorMap;
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friend class NimBLECharacteristic;
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friend class NimBLEService;
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friend class NimBLE2902;
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friend class NimBLE2904;
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NimBLEDescriptor(const char* uuid, uint16_t properties,
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uint16_t max_len,
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NimBLECharacteristic* pCharacteristic);
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NimBLEDescriptor(NimBLEUUID uuid, uint16_t properties,
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uint16_t max_len,
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NimBLECharacteristic* pCharacteristic);
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NimBLEUUID m_uuid;
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uint16_t m_handle;
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NimBLEDescriptorCallbacks* m_pCallbacks;
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NimBLECharacteristic* m_pCharacteristic;
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uint8_t m_properties;
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attr_value_t m_value;
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static int handleGapEvent(uint16_t conn_handle, uint16_t attr_handle,
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struct ble_gatt_access_ctxt *ctxt, void *arg);
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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 NimBLEDescriptorCallbacks {
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public:
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virtual ~NimBLEDescriptorCallbacks();
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virtual void onRead(NimBLEDescriptor* pDescriptor);
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virtual void onWrite(NimBLEDescriptor* pDescriptor);
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};
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#endif /* CONFIG_BT_ENABLED */
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#endif /* MAIN_NIMBLEDESCRIPTOR_H_ */ |