bluekeyes / pico-12vrgb-hid-controller Goto Github PK

Once Windows detects a HID device as implementing a more specific API in the WinRT set, it seems to hide it from the generic WinRT HID API. While you can often still list the device, I couldn't actually open it or send messages.

This is mostly an issue for the lamp-array subcommand, which is a direct binding to the Lighting and Illuminate HID API.

I haven't tried yet, but I suspect the lower-level win32 HID API might allow access to this device, even if the higher-level APIs do not: https://learn.microsoft.com/en-us/windows/win32/api/_hid/

Now that Dynamic Lighting is available in Window 11, it turns out my device isn't actually compatible. As discussed a bit in the README for the cli package, when I tried to test this using the Windows APIs previously, I ran in to a hang that I couldn't solve. Unsurprisingly, whatever causes that problem also prevents Dynamic Lighting from working, since it presumably uses the same underlying APIs.

Since I last tried debugging this, Microsoft published https://github.com/microsoft/RP2040MacropadHidSample, which is also an RP2040-based implementation. The LampArray APIs correctly discover a device running this sample code without hanging, which proves that the issue is with my code and not with Windows. I now think there's something wrong with my HID descriptor that causes the Windows APIs to hang.