We would like to use a smart-phone as an interface for our scientific instruments (instruments have their own power source). We already use the c++ driver library under various Linux distribution and managed to successfully compile them in the Ubuntu phone emulator as well. Now, we would like to connect our instrument to a nexus 4 with Ubuntu touch.
In order to connect our instrument with the nexus we need a USB OTG connection. For android, the OTG was disabled in 4.2.2, but enabled in 4.3. Before we proceed, we have two questions:
Does anyone know if OTG works on the nexus 4 with Ubuntu touch/ has anyone tested it?
Our driver libraries use the libusb library.. should we expect some problems here?
Currently, Keyboard and mouse through OTG is working on my Nexus 7 2013, though there's still no mouse cursor shown on the screen making it difficult to use and attaching a keyboard doesn't stop the on-screen keyboard to appear. With this, I assume your instrument might be able to communicate with the device through OTG but not sure about the driver libraries