Documentation issue on page about Wiring the MMB

[jaketri]

The manual page about Wiring the MMB (page 125 on current version of the documentation PDF) have pre-gate sensors using MMB connectors STP1 - STP8 and also shows jumpers ON for DIAG1 and DIAG2 (gear and selector motors). Based on MMB documentation. STP1 / STP2 and DIAG1 / DIAG2 share same GPIOs (PA3 / PA4). Also the STP9 and STP10 are not used so a quick fix is to shift the pre-gate sensors to use STP3 - STP10 and reserve PA3 and PA4 GPIOs (used by STP1 and STP2) for DIAG1/2 signals.

[o1hitman1o]

This seems correct but also their might be something wrong with MBB documentation. I see that STP3(STOP-3) connects to pin PB8 but STP4(STOP-4) connects to pin (PB7) but on the Schematic is shows from the MCU section PB9 is STOP-3 and PB8 is STOP-4, PB7 is M4-DIR. Upon further research It seems this is an issue in the documentation on MMB Link Overall I think you are correct with this (if you plan on using sensorless homing for any of the motors), you will need to leave STP1 & STP2 open. If not then you would not use the jumper pin on DIAG1 or DIAG2 and can use STP1&2 for the pre-gate sensors.

[o1hitman1o]

@jaketri looks like this was just updated. Close issue?

[jaketri]

Closing issue as fixed by latest documentation update