arduino BLE on ESP32

[FuniksL]

Hi, regarding arduino BLE

(I have put the same question some time ago on the arduino forum, but unfortunately with no answers)

I have read that

1 BLE is run on core 0, and Arduino is run on core 1

2 “most likely bluetooth is running on core 0 (even if you create and run BLE library on core 1).
Remember that BLE library is only wrapper for esp-idf and bluedroid driver.” From Running BLE_server on core 1 affects timing of measurements on core 0 · Issue #937 · nkolban/esp32-snippets · GitHub https://github.com/nkolban/esp32-snippets/issues/937


Q1. Would it make any sense to run my BLE task pinned to core 0? To give my other task running on core 1 (is priority 2 and must run every 2 ms via notification from ISR) and the arduino loop task on core 1 more time/resources? Or does this happen automatically that BLE functions are run on core 0?

Q2. Is calling the BLE.poll function continuously still necessary on the nano esp32?

I had problems keeping the BLE connection alive on the nano 33 IoT and DFRobot nRF52840, and found that this was the solution,

BluetoothLE-Examples
ArduinoBLE Examples
BluetoothLE Examples of various platfoms
https://tigoe.github.io/BluetoothLE-Exa ... _examples/

“Timing is important when managing a BLE connection. Avoid long delays between calls to ble.poll() or to BLE.central() or central.connected().”