01 = in PB_12 out  PD_2
02 = in PA_11 out PC_11
03 = in PA_12 out PC_10
04 = in  PC_5 out PC_12
05 = in  PC_6 out  PH_1
06 = in  PC_8 out  PC_2
07 = in  PC_9 out  PC_3
08 = in  PB_8 out  PC_0
09 = in  PB_9 out  PC_1
10 = in  PA_6 out  PB_0
11 = in  PA_7 out  PA_4
12 = in  PB_6 out  PA_1
13 = in  PC_7 out  PA_0
14 = in  PA_9 out  PB_3
15 = in  PA_8 out  PB_5
16 = in PB_10 out  PB_4