 Pin: PE6 (Morpho CN15 pin2)
  - PSSI_D2   Pin: PC3 (Morpho CN3 pin25)
  - PSSI_D3   Pin: PB9 (Morpho CN15 pin16)
  - PSSI_D4   Pin: PC11 (Morpho CN2 pin27)
  - PSSI_D5   Pin: PE4 (Morpho CN3 pin21)
  - PSSI_D6   Pin: PG2 (Morpho CN15 pin15)
  - PSSI_D7   Pin: PC1 (Morpho CN15 pin5)
  - PSSI_DE   Pin: PC0 (Morpho CN3 pin17)
  - TIM1      Pin: PD6 (Morpho CN15 pin6)
  Connect each PSSI_Dx with wires between the boards.
  Connect PSSI_DE together to allow the synchronization with the Slave board.
  Connect PS