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hidhidapi

Using HIDAPI, how can you query the raw report descriptor?

I'd like to deconstruct the raw reports received from the hid_read function of hidapi.

As I understand, this can be achieved using the information from the device's report descriptors. But when trying to query for those descriptors, I get lost somewhere between the HID Spec and using the methods available in hidapi.

I would love to see a concrete C or node-hidapi based example that queries and enumerates all the report descriptors for a device — perhaps a mouse to keep things simple?

Solution

  • I asked Alan Ott by email about this, and he responded with no as follows:

    HIDAPI does not provide functions for getting or parsing the report descriptor. Since HIDAPI is for talking to a custom devices, these devices will likely contain all or mostly vendor-defined report items anyway.