How can i find BLE Class of Device

[Huseyin T.]

Hi everyone,

I am trying to listing mobile phone using BLE(nrf52833 and software: ble_app_uart_c). I have downloaded nrf connect app on android and then i scanned and listed device. While i examine the listed devices, notice that the nrf scanner app recognized the computer(This device is computer and windows 10). How can i classify devices as phone, computer or Peripheral from ble datas(manufacturer Data). Device classes are specified in the assigned number document(page 48), but I could not separate these classes from the raw data.

Example Data Parsing:

raw Data = 1eff060001092002da7e8d4e36d854dbd96024079a4e4f8dc28a1570209ea9
Length = 1e
Man Spec Data = ff
Company ID = 0600    //(0006 Microsoft)
01092002da7e8d4e36d854dbd96024079a4e4f8dc28a1570209ea9

BLE Device Type.pdf

[Jørgen Holmefjord]

Hi,

The device type is detected by the nRF Connect application because it uses an advertising packet format that is known to the app (Microsoft Advertising Beacon). It is possible to set the appearance in the advertising packet, according to Bluetooth SIG Assigned Numbers Document (PDF). The document you linked about device classes seems to reference Bluetooth Core vol 2, which describes Bleuetooth Classic packets.

I'm not sure what you are trying to achieve by this classification, but it might be easier to determine the device based on service UUIDs, name, company ID, or some custom data in manufacturer data.

Best regards,
Jørgen