Mouse HID over Gatt

JethroNull

Is this possible? The programming manual lists a command for setting keyboard parameters but does not mention mouse use. If it is possible, could you give me a quick snippet on setting it up and sending mouse data? Also, will it be possible to switch this gatt stream between two paired clients?

TIA

FAE_Gavin

JethroNull Technically, HID over GATT (HOGP) is indeed a standard Bluetooth LE protocol that theoretically supports mouse functionality. However, the actual implementation depends on: module hardware specifications, firmware version, and software configuration.

To provide you with accurate technical support, please provide the following information:

Specific module model being used
Current firmware version information
Development environment information
Application scenario

JethroNull

My apologies for neglecting that. Ideally:

FSC-BT631D (although we could swap to something else)
Latest commercial firmware
C++ in VSCode (micro not decided so compiler not known)
A headphone like device that combines normal two way audio (pref. via CIS LE Audio) and mouse HID. Optionally the ability to switch between 2 or paired clients by simply addressing them by their handle or MAC.

We've previously used NRF52840 and Nordic SDK but we can use whatever environment gets us the closest to the above. I'm old-school so AT commands are fine by me.

FAE_Gavin

JethroNull The BT631D module supports HID functionality. For detailed instructions, please refer to the command manual available at the following link:
https://document.feasycom.com/docs/audio/BT631D_EN/latest/index.html

Note: The BT631D's default profile setting is 9385. Both LE Audio CIS and HID features are disabled by default and need to be enabled using the AT+PROFILE command.

If this solution does not fully meet your requirements, we would be glad to further discuss your application scenario involving the combination of mouse control (HID) and LE Audio. Understanding your specific use case will help us recommend the most suitable solution.

Feel free to share more details about your project.

JethroNull

Or maybe you can identify another module that has audio and mouse-capable HID? Even non-BLE.

JethroNull

Thanks for that Gavin. I've read the programming manual before and mentioned to you that it does not explicitly say it supports mouse HID, only keyboard HID. You had said "Technically, HID over GATT (HOGP) is indeed a standard Bluetooth LE protocol that theoretically supports mouse functionality. However, the actual implementation depends on: module hardware specifications, firmware version, and software configuration.". So I am still unclear whether enabling bit 9 in the AT+PROFILE command would give us mouse HID as well as keyboard HID.

The application is for a gamer headset with head-mouse functionality for disabled gamers. So, two-way voice, stereo audio, and mouse HID is required. Preferably low-latency LE audio and HOGP (but we could live with BR/EDR).

It is just that simple question of whether BT631D can do mouse HID, that is making me nervous. For an accessibility market product our volumes won't be high, so I doubt you would be willing to do custom firmware. So, I am just keeping my fingers crossed 🙂

FAE_Gavin

JethroNull Thank you for providing the detailed application context regarding the head-mouse functionality for the gaming headset. We fully understand the core objective of your project and have conducted an internal review based on your specific requirements.

Enabling bit 9 in the AT+PROFILE command activates Keyboard HID functionality only, and does not include Mouse HID.

After verifying with our R&D team, we regret to inform you that Mouse HID functionality is not currently planned in our short-term development roadmap, and therefore we are unable to offer support for this feature at this time.

JethroNull

That's what I needed to know. Thank you anyway.