Chromebooks and bluetooth

RE: Chromebooks and bluetooth

Hieu — Thu, 13 Feb 2025 12:34:29 GMT

Hi Ian,

Simon is out of office, and I will continue helping you in his stead.

Could you explain a bit more about the graph and the issue? There is a gap between two clusters of lines, and then a similar gap at the end. Does the scanner app just cycle between small intervals of seeing devices and not? How long are such intervals?

What does it look like when you click on a device and go into the "More" screen?

What does it look like on an Android phone, scanning the same environment?

Does this happen only to your customer's devices, or to all BLE devices around?

Regards,

Hieu

RE: Chromebooks and bluetooth

FCian — Mon, 10 Feb 2025 21:13:48 GMT

Hi Simon,

According to the testing team it is occurring on various kinds of chromebooks. But the picture is from:

Samsung

Version 132.0.6834.154 (Official Build) (64-bit)

I have an HP I'm using here and will see if I can get you better data.

Yes, you are correct, a little brain have there. The firmware was built with

nRF5 SDK v11.0.0 (Release data Week 10, 2016)

s132_nrf2_2.0.0_softdevice.hex

Thank you,

ian

RE: Chromebooks and bluetooth

Simonr — Fri, 07 Feb 2025 11:41:36 GMT

Can you share some details on what model of Chromebook this is? The scanning pattern seems to be similar to what you would see with a scanner that does not support scanning on the secondary channels and only scans channels 37, 38 and 39.

Does the advertising devices have extended advertising enabled by chance? You also say that you're working on nRF5 SDK v4.1. Do you refer to the Bluetooth Mesh or Zigbee SDKs or what, since the nRF5 SDKs for BLE added support for the nRF52 series as of SDK v12.3.0.

It's worth noting that for new projects, the nRF Connect SDK is the recommended SDK to be using.

Best regards,

Simon