I am working on project, where a FEZ Panda II is connected to a Windows PC using a USB cable.
The device works as a HID, with a fixed input buffer length, and a fixed output buffer length.
All works great - but at the most, I am able to transfer 4 KB/sec - this is by transmitting a byte array directly from memory, so there is no “generate” overhead.
Anybody got tips on performance optimizing for USB HID? I tried changing the output buffer size, and higher seems to be better for bulk data.
Although, anything above 32 bytes/frame throws an error when starting the device.
I know HID was not built for transfer speed, and I am not expecting 480 Mbps - or even 12 Mbps, but I was hoping for more than 0.03 Mbps.