bluetoothbluetooth-lowenergynrf52

How to configure device type in bluethooth advertising package?

I'm developing a custom bluetooth keyboard. It works now smoothly, but there's one thing I can't figure out. In macOS bluetooth settings page, the icon doesn't properly imply its device type. AirPods Pro and Logitech M590 mouse do the job well.

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Going through the system information, both AirPods Pro and Logitech M590 have a minor type field in its device information. I believe it's sent to Macbook via the device bluetooth advertising.

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My keyboard is developed on top of an nRF52832 module. I'm not very familiar with NRF SDK, this is my first attempt. How can I add such information to my device? Any links to the doc or sample code would help.

Solution

  • Great thanks to @MichaelKotzjan who provides the helpful information.

    The answer is kinda simple (yeah I'm a newbie for nRF). Just call sd_ble_gap_appearance_set method in your GAP initialization, passing BLE_APPEARANCE_HID_KEYBOARD as the argument.

    Here's a sample. You can definitely pass another macro depending on the device you're developing.

    static void gap_params_init(void)
{
    // some code

    err_code = sd_ble_gap_appearance_set(BLE_APPEARANCE_HID_KEYBOARD);
    APP_ERROR_CHECK(err_code);

    // some code
}

    Now I get the proper icon

    enter image description here