RP2040 PicoW axis limit switches

[Mattmannz71]

Looking at the board layout it has limit inputs for each axis, X,Y,Z,A. Looking at the board map it only appears to enable limit for X,Y,Z and I would like to run auto squared dual Y axis.

Can anyone confirm?

Thanks in advance.
Matt.

[terjeio]

Y2 uses the M3_LIMIT_PIN (if available in the map) in a XYYZ configuration. Use the $pins command to list the pins.

[Mattmannz71]

Thanks so much for your help - I can see LimA = TR18 but does that map to M3_LIMIT shown in the config file? That is the mapping step I am missing and I can't find the information for that part.

[terjeio]

Again, M3 pins map to the A pins when auto-squared Y is configured. If it does not work then it might be an issue with the board?

TR18 -> LIMA via U2, LIMA is pin 3 (GPIO3) according to the schematic which equals to #define M3_LIMIT_PIN 3 in the map file.

[terjeio]

And here is where the mapping is done for the driver.

[Mattmannz71]

Again, M3 pins map to the A pins when auto-squared Y is configured. If it does not work then it might be an issue with the board?

TR18 -> LIMA via U2, LIMA is pin 3 (GPIO3) according to the schematic which equals to #define M3_LIMIT_PIN 3 in the map file.

Thanks so much - I can't find the schematic ie TR18 = GPIO3 - that is the info I am looking for. Sorry for all the questions.

Cheers
Matt

[terjeio]

[Mattmannz71]

Thanks for the quick reply! I can't see how the mapping of the pins to the physical board pins is done, the links show the board layout which refers to traces ie Limit A input is TR18, Limit Z input is TR19 whereas the board map has M3_LIMIT_PIN. Where can I find the logical to physical mapping?

Cheers
Matt

[terjeio]

Where can I find the logical to physical mapping?

In the vendor board documentation? BTW which board?