Turn your handheld into USB gamepad for PC/Android

Usage:
- Connect handheld to PC via USB
- Run this USB HID app
- Now you should be able to control PC/phone via handheld buttons
- Press RESET button to leave USB HID mode

Mappings:
- DPAD mapped to ARROWS
- B mapped to L_CTRL
- A mapped to SPACE
- Y mapped to L_SHIFT
- X mapped to X
- SELECT mapped to BACKSPACE
- START mapped to ENTER
- L1 mapped to L_ALT
- R1 mapped to TAB
- L2 mapped to PG_UP
- R2 mapped to PG_DOWN
- RESET not mapped, press to QUIT