key mapping for usb keyboard (android)

[mochimru]

I would like to ask if it is possible to map the on screen buttons of ppsspp on a usb keyboard for android tablets. i find it hard to play 3rd person games because if i hold the analog up, I always accidentally press the down button and the camera moves down so i always end up dying like in God Eater Burst. and also the L and R buttons are too high for my tablet im using a 9.4 inch android tablet and it is really hard to press the L and R buttons. hope someone could help me. because i dont have trouble playing games. its just that the buttons are fucked up in my screen. BTW im playing GEB in windows desktop with out problems with camera because i could map the keys to my keyboard.

thanks in advance