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adafruit / Adafruit_CircuitPython_BLE

Bluetooth Low Energy (BLE) library for CircuitPython
MIT License
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Can't use multiprocessing on the BLE connections to retrieve data from multipe devices at the same time #120

Open sreerajpunnoli opened 3 years ago

sreerajpunnoli commented 3 years ago

I have been trying to get data out from multiple pulse-oximeters at the same time. I was able to run them separately in two different environments and able to extract data from two pulse-oximeters at the same time. I tried to use multiprocessing after the BLE connection to retrieve data parallelly from two pulse-oximeters in the same environment, the connection is getting lost and data is no longer getting received. Then I removed multiprocessing to check whether the code is right and verified that the data is getting retrieved from the code. How do I retrieve data from multiple BLE devices at the same time using multiprocessing with the library?

sreerajpunnoli commented 3 years ago

This is happening only in Raspberry Pi. I have tried it in mac and windows, both are working fine. In Raspberry Pi 4 with Raspberry Pi OS, the connect method in BLERadio class is getting called and it is waiting forever and not throwing timeout exception. When I removed the multiprocessing, connect method works fine in Raspberry Pi OS. It seems like a library issue. Please suggest.

Jeffreyfrmn commented 8 months ago

@sreerajpunnoli I'm also experiencing this issue... did you find any solutions?