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https://github.com/h2zero/esp-nimble-cpp.git
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05080abad4
This allows for clearing the duplicate filter cache when required and will also clear it automatically when starting a scan. This is useful when unexpectedly disconnected from a device and attempting to reconnect. Previously the scan filter would not report advertisements from a device if it was multi-connectable and advertising while connected. The result was long delays until the device would be scanned again. This resolves it by clearing the filter cache on each scan start/clearResults call and adding a method to NimBLEScan for manually clearing the cache on demand.
103 lines
3.5 KiB
C++
103 lines
3.5 KiB
C++
/*
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* NimBLEScan.h
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*
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* Created: on Jan 24 2020
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* Author H2zero
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*
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* Originally:
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*
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* BLEScan.h
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*
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* Created on: Jul 1, 2017
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* Author: kolban
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*/
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#ifndef COMPONENTS_NIMBLE_SCAN_H_
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#define COMPONENTS_NIMBLE_SCAN_H_
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#include "sdkconfig.h"
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#if defined(CONFIG_BT_ENABLED)
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#include "nimconfig.h"
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#if defined(CONFIG_BT_NIMBLE_ROLE_OBSERVER)
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#include "NimBLEAdvertisedDevice.h"
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#include "NimBLEUtils.h"
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#include "host/ble_gap.h"
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#include <vector>
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class NimBLEDevice;
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class NimBLEScan;
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class NimBLEAdvertisedDevice;
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class NimBLEAdvertisedDeviceCallbacks;
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class NimBLEAddress;
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/**
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* @brief A class that contains and operates on the results of a BLE scan.
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* @details When a scan completes, we have a set of found devices. Each device is described
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* by a NimBLEAdvertisedDevice object. The number of items in the set is given by
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* getCount(). We can retrieve a device by calling getDevice() passing in the
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* index (starting at 0) of the desired device.
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*/
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class NimBLEScanResults {
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public:
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void dump();
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int getCount();
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NimBLEAdvertisedDevice getDevice(uint32_t i);
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std::vector<NimBLEAdvertisedDevice*>::iterator begin();
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std::vector<NimBLEAdvertisedDevice*>::iterator end();
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NimBLEAdvertisedDevice *getDevice(const NimBLEAddress &address);
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private:
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friend NimBLEScan;
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std::vector<NimBLEAdvertisedDevice*> m_advertisedDevicesVector;
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};
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/**
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* @brief Perform and manage %BLE scans.
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*
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* Scanning is associated with a %BLE client that is attempting to locate BLE servers.
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*/
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class NimBLEScan {
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public:
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bool start(uint32_t duration, void (*scanCompleteCB)(NimBLEScanResults), bool is_continue = false);
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NimBLEScanResults start(uint32_t duration, bool is_continue = false);
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bool isScanning();
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void setAdvertisedDeviceCallbacks(NimBLEAdvertisedDeviceCallbacks* pAdvertisedDeviceCallbacks, bool wantDuplicates = false);
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void setActiveScan(bool active);
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void setInterval(uint16_t intervalMSecs);
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void setWindow(uint16_t windowMSecs);
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void setDuplicateFilter(bool enabled);
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void setLimitedOnly(bool enabled);
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void setFilterPolicy(uint8_t filter);
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void clearDuplicateCache();
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bool stop();
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void clearResults();
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NimBLEScanResults getResults();
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void setMaxResults(uint8_t maxResults);
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void erase(const NimBLEAddress &address);
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private:
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friend class NimBLEDevice;
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NimBLEScan();
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~NimBLEScan();
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static int handleGapEvent(ble_gap_event* event, void* arg);
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void onHostReset();
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void onHostSync();
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NimBLEAdvertisedDeviceCallbacks* m_pAdvertisedDeviceCallbacks = nullptr;
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void (*m_scanCompleteCB)(NimBLEScanResults scanResults);
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ble_gap_disc_params m_scan_params;
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bool m_ignoreResults;
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NimBLEScanResults m_scanResults;
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uint32_t m_duration;
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ble_task_data_t *m_pTaskData;
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uint8_t m_maxResults;
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};
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#endif // #if defined(CONFIG_BT_NIMBLE_ROLE_OBSERVER)
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#endif /* CONFIG_BT_ENABLED */
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#endif /* COMPONENTS_NIMBLE_SCAN_H_ */
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