/* Column pin configuration
* col: 0   1   2   3   4   5   6   7   8   9   10  11  12  13  
* pin: F7  F6  F5  B6  D2  D3  D1  D0  D4  C6  D7  E6  B4  B5
*/

/* Row pin configuration
* row: 0   1   2   3  
* pin: F4  B1  B3  B2
*/

GPIO pads
B1 SCK
B3 MISO
B2 MOSI

	
