peripheral displayed as Accessory on iOS

RE: peripheral displayed as Accessory on iOS

Mostafa Berg — Tue, 12 Dec 2017 08:52:37 GMT

of course!, no rush :) just wanted to be up to date, we will look into the issue straight away as soon as I get your input. thanks

RE: peripheral displayed as Accessory on iOS

gkovelman_tap — Tue, 12 Dec 2017 08:51:39 GMT

Takes me time to create a setup for this.. Sorry about the holdup

RE: peripheral displayed as Accessory on iOS

Mostafa Berg — Tue, 12 Dec 2017 07:50:08 GMT

@gkovelman_tap, any updates on that ? still waiting for input :)

RE: peripheral displayed as Accessory on iOS

Mostafa Berg — Thu, 07 Dec 2017 08:09:13 GMT

ahh of course !, sorry about that didn't pay attention, let me take a deeper look, my initial guess is that it's something similar though, will dig deeper, what service(s) are you advertising ? thinking of reproducing here locally to see if i can get a sniffer log, also, if you have a test firmware that could be flashed on one of our DKs that would immensely help :)

RE: peripheral displayed as Accessory on iOS

gkovelman_tap — Wed, 06 Dec 2017 15:37:33 GMT

That's part of the Bluetooth Classic guidelines and not the Bluetooth Low Energy as in our case. I don't see any reference to Class of Device in the SDK14.0.0.

More information about my advertisement data: The advertisement PDU contains the flags, appearance and services (1 16-bit and 1 128-bit) and the scan_rsp contains the device name and the TX power.

RE: peripheral displayed as Accessory on iOS

Mostafa Berg — Wed, 06 Dec 2017 15:17:39 GMT

As per your comments, you are seeing this in the iOS bluetooth options, where this seems to be an expected behaviour, iOS tries to show a "Friendly name" until the connection is established, if you follow the Bluetooth Accessory Design Guidelines, specifically in

Section 2.1.5 Extended Inquiry Response, it states the following:

During the Bluetooth discovery process, the Apple product prefers to display the Friendly Name of discovered accessories. Before the 2.1 version of the Bluetooth specification the Apple product would have to set up a connection to the accessory and do a Remote Name Request, which takes power, antenna time, and user's time. The Extended Inquiry Response feature, introduced in Bluetooth 2.1, lets an accessory send its Local Name and other information as part of the Inquiry Response and thereby increase the speed and efficiency of the discovery process. The Local Name should match the accessory's markings and packaging and not contain ':' or ';'.

I would also check out

Section 2.1.8 Class of Device (CoD)

specifically this paragraph:

Every accessory that is compatible with an Apple product must accurately set its Class of Device using the Bluetooth SIG defined Major Device Class and Minor Device Class. See Volume 3, Part C, Section 3.2.4 in the Bluetooth Core Specification , Version 5.0. For example, an audio/video accessory intended to operate in a vehicle should set Major Device Class to audio/video and Minor Device Class to car-audio .

My guess is this is where you can set your device class, allowing iOS to give it a proper "Friendly name"

I would help further if you give more details, but I think this should resolve your issue, also, make sure to note which bluetooth version the iOS device you're testing on is using.

So in conclusion, this is not a bug, it's an expected behaviour

You may check the rest of the design guidelines to ensure you have implemented all the required services and characteristics.

RE: peripheral displayed as Accessory on iOS

Mostafa Berg — Wed, 06 Dec 2017 15:07:33 GMT

Ofcourse, i thought you were testing against one of our apps, i'll write up an answer now :)

RE: peripheral displayed as Accessory on iOS

gkovelman_tap — Wed, 06 Dec 2017 15:03:39 GMT

iOS Settings page -> Bluetooth

Then the device is listed as Accessory. After pairing, the name changes to the correct one, but it's still displayed as Accessory until then.

RE: peripheral displayed as Accessory on iOS

Mostafa Berg — Wed, 06 Dec 2017 15:00:50 GMT

perfect, which app are you testing this against ?

RE: peripheral displayed as Accessory on iOS

gkovelman_tap — Wed, 06 Dec 2017 14:59:56 GMT

Yes, own firmware. Absolutely no reference to accessory in the project.

RE: peripheral displayed as Accessory on iOS

Mostafa Berg — Wed, 06 Dec 2017 14:15:13 GMT

What kind of device is that ? or are you writing your own firmware ? if so, please verify that the firmware has no issues that causes the peripheral to advertise the name "accessory", a quick search for "accessory" through your code will easily catch that.

RE: peripheral displayed as Accessory on iOS

gkovelman_tap — Wed, 06 Dec 2017 14:12:41 GMT

Expected is my device's name, say Tap, and actually seeing Accessory

RE: peripheral displayed as Accessory on iOS

Mostafa Berg — Wed, 06 Dec 2017 14:10:44 GMT

What is the expected name and what is the accessory name that you're seeing ?

RE: peripheral displayed as Accessory on iOS

gkovelman_tap — Wed, 06 Dec 2017 14:06:55 GMT

iOS doesn't display icons. I mean that the device's name is displayed as Accessory, and not as my actual device's name.

The peripheral's appearance is Generic HID.

RE: peripheral displayed as Accessory on iOS

ketil — Wed, 06 Dec 2017 12:23:06 GMT

Hi,

What do you mean by accessory? Does it show up with a specific icon?

In that case it is likely caused by the firmware setting the Bluetooth Appearance Characteristic.

You can read more about changing the Appearance Characteristic in the Bluetooth Advertising tutorial. You can find information about the different values in the Infocenter.

Ketil