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I am developing a custom BLE HID device, it can successfully connect to my Windows 10 laptop.
However when I check the existing HID device's product name with python library pyhidapi
It returns an empty string.
By checking the source code of pyhidapi and hidapi,
I found that they use the function HidD_GetProductString to get the product string of the hid device.
So I would like to ask that if this is a valid function to get the product string of the BLE HID device?
And is the product string means the advertised device name from the BLE HID device?
This is currently not supported by the HID stack for BLE. The alternative is to use the Bluetooth LE APIs to query the information you need directly from DIS (Device Information Service), which is required to be supported by all HID-over-GATT BLE devices.
But I saw the documentation include the keywords "Bluetooth"
"If the supplied buffer is not <= 4093 bytes (2^12 – 3) the call may fail (depending on the underlying protocol, HID/Bluetooth/SPI) with error code ERROR_GEN_FAILURE (0x0000001f)"
shouldn't it is supported?
or I need to use classic Bluetooth HID for that?
This is supported on classic Bluetooth HID. It is not supported on Bluetooth LE HID.
Sorry for asking you again
But when I switch to use Bluetooth classic HID, I still can't get the product string
May I know if it is classic Bluetooth HID, where will HidD_GetProductString get the product string
Currently, I set a device name in Bluetooth GAP and Bluetooth SDP 0x0100 attribute