    /* Column pin configuration
    * col: 0   1   2   3   4   5   6   7   8   9   10  11  12  13
    * pin: F0  F1  E6  C7  C6  B6  D4  B1  B7  B5  B4  D7  D6  B3  (Rev.C)
    */
     
    /* Row pin configuration
    * row: 0   1   2   3   4
    * pin: D0  D1  D2  D3  D5
    */
     
    GPIO pads
    0 F7 WASD LEDs
    1 F6 ESC LED
    2 F5 FN LED
    3 F4 POKER Arrow LEDs
     
    B2 Capslock LED
    B0 not connected
