It worked once for me while I was using ppsspp, once I closed the app it stopped working. I just tried the controller on my brothers nexus 7 2g and it connected fine showing player one. My tegra just showed all flashing lights
When I plug in the controller flashes for a second, then stops. I press the guide button and then it just flashes. Holding start the the gamepad mapper never starts.
I tested USB/BT joy center but it says no USB device found