
I'm now trying to get control of the blue LEDs behind the knob and the LCD bitmap display.

For the LEDs, I've been trying to use the SET_REPORT command (similar to the LEDs in my USB keyboard driver) for Report ID 4 which appears to be the LED usage page, but I can't seem to get any change. When I use the GET_REPORT command, it returns 4 in the first byte (report ID) and zero in the second byte, no matter what I have sent in the SET_REPORT command.
I can't seem to find any reference to the LCD bitmap in the HID descriptor information, but there are report IDs 5 through 18 which are "feature" descriptions. I'm assuming that these features allow things like recentering of axes.
I'd be grateful for any assistance that anyone could offer in helping me getting the LEDs and LCD display working, and in finding out what those 14 feature descriptors do.
Thanks
Dave Pugh