Save sensor data in file and send it over BLE

RE: Save sensor data in file and send it over BLE

Sigurd — Fri, 17 Nov 2023 09:48:45 GMT

Hi!

I think BLE NUS could be a good option. If you want to start with something simple, then use the central_uart sample on the dongle: https://github.com/nrfconnect/sdk-nrf/tree/main/samples/bluetooth/central_uart

RE: Save sensor data in file and send it over BLE

Piwy — Wed, 08 Nov 2023 07:59:06 GMT

Also i don't know if BLE NUS is the good solution to my issu, i also saw Object Transfer Service that could help me about this but i don't find many imformation about it.

RE: Save sensor data in file and send it over BLE

Piwy — Wed, 08 Nov 2023 07:56:37 GMT

Hi, I just checked the machine learning and edge impulse, if i understand it welle, they use BLE NUS to send data and save it in a json file ?
I will explain my setup, i have an the thingy53 witch is the peripheral device with the accelerometer that i want to use at his maximal frequency.
With the BLE NUS, i can send many data in one time.
My other device is like a nrf52840dongle with the sample bluetooth shell, it's my central device.I want to do a thread in the central device that receive accelerometer data on the BLE Nus service and put in directly in a file over serial or something like that.
The machjine learning app or edge impulse are really complicated, can oyu help me ?

Regards,

Pierre-Yves
I

RE: Save sensor data in file and send it over BLE

Piwy — Thu, 26 Oct 2023 06:53:14 GMT

I will look at this and get back to you, ty !

Regards,

Pierre-Yves

RE: Save sensor data in file and send it over BLE

JONATHAN LL — Wed, 25 Oct 2023 11:43:20 GMT

Hi,

You might need to buffer up more of the sensor data and send larger packets over BLE.

It might sound like you want to sample data with the Thingy53, there is in fact some examples here for this, Edge impulse have some tools for this type of work. Maybe that is what you are looking for?

If so here is some info:
https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/thingy53-machine-learning

https://docs.edgeimpulse.com/docs/development-platforms/officially-supported-mcu-targets/nordic-semi-thingy53

Regards,
Jonathan