The 6 buttons on the EV3 are connected to GPIOs.
| Button | GPIO | Description |
|---|---|---|
| 0 | 7-5 | Up |
| 1 | 1-13 | Enter |
| 2 | 7-14 | Down |
| 3 | 7-12 | Right |
| 4 | 6-6 | Left |
| 5 | 6-10 | Back (ESC) |
##Device Driver We are using the existing gpio-keys driver. This causes the buttons to function as regular keyboard keys. Key mapping is defined in board-legoev3.c. Currently the back key is mapped to ESC, but @dlech wonders if it might be better mapped to Backspace.