Oddity with ugen

[Hans Petter Selasky]

On 05/18/16 17:53, Karl Denninger wrote:
> I'm reasonably sure that the Pi2 itself and the base USB code is ok,
> however, because there is another USB device also in use by the same
> software (it emulates a serial port and so attaches on the serial
> driver;

Hi,

When you are using /dev/usb/X.Y.Z the IN-endpoints will be polling for 
data all the time. I've seen devices that return crap data if you try to 
read from them while you are not supposed to get data, in typical 
ping-pong protocol scenarios. Using libusb might be a better solution.

--HPS