jacob.eva/arduino-esp32
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
82670b96f8
arduino-esp32/libraries/BLE
History
Jens Hauke 82670b96f8
Fix for missed scan response data (BLEScan). (#4358) 
This is a fix for missing scan responses after a first successfull scan.

While running the BLE_scan.ino sketch with wantDuplicates=false, i got
only one result with correct advertising and scan response length (31,26):

pBLEScan->setAdvertisedDeviceCallbacks(new MyAdvertisedDeviceCallbacks(), false);
pBLEScan->start(scanTime, false);
...
[W][BLEScan.cpp:109] handleGAPEvent(): bytes length: 31 + 26, addr type: 1

All following calls to start() just returned the advertising data without
scan response data:

pBLEScan->start(scanTime, false);
[W][BLEScan.cpp:109] handleGAPEvent(): bytes length: 31 + 0, addr type: 1

With "wantDuplicates=true" i got:

pBLEScan->setAdvertisedDeviceCallbacks(new MyAdvertisedDeviceCallbacks(), true);
pBLEScan->start(scanTime, false);
[W][BLEScan.cpp:109] handleGAPEvent(): bytes length: 31 + 26, addr type: 1
[W][BLEScan.cpp:109] handleGAPEvent(): bytes length: 31 + 26, addr type: 1
[W][BLEScan.cpp:73] handleGAPEvent(): ESP_GAP_SEARCH_INQ_CMPL_EVT
Devices found: 1
Scan done!
pBLEScan->start(scanTime, false);
[W][BLEScan.cpp:109] handleGAPEvent(): bytes length: 31 + 0, addr type: 1
[W][BLEScan.cpp:109] handleGAPEvent(): bytes length: 0 + 26, addr type: 1
[W][BLEScan.cpp:109] handleGAPEvent(): bytes length: 31 + 0, addr type: 1
[W][BLEScan.cpp:109] handleGAPEvent(): bytes length: 0 + 26, addr type: 1

Explicitly initializing m_scan_params.scan_duplicate of BLEScan solves
this issue (In my case the un-initialized value was
m_scan_params.scan_duplicate == 1073599044).

Co-authored-by: Me No Dev <me-no-dev@users.noreply.github.com>
2020-10-01 15:43:30 +03:00
..
examples Fix issue #3833, data parsing of Eddystone TLM data frame (#3836) 2020-09-30 14:55:58 +03:00
src Fix for missed scan response data (BLEScan). (#4358) 2020-10-01 15:43:30 +03:00
library.properties Set ESP-IDF to 3.2 (#2662) 2019-04-12 15:43:53 +02:00
README.md Set ESP-IDF to 3.2 (#2662) 2019-04-12 15:43:53 +02:00

README.md

ESP32 BLE for Arduino

The Arduino IDE provides an excellent library package manager where versions of libraries can be downloaded and installed. This Github project provides the repository for the ESP32 BLE support for Arduino.

The actual source of the project which is being maintained can be found here:

https://github.com/nkolban/esp32-snippets

Issues and questions should be raised here:

https://github.com/nkolban/esp32-snippets/issues

Documentation for using the library can be found here:

https://github.com/nkolban/esp32-snippets/tree/master/Documentation