Pin planner inconsistency to datasheet

[Adam Broders]

Hello,

During design and schematic entry I used the online datasheet to select GPIO capability. I was advised that I should try out the pin planner to confirm that pin choices are acceptable.

I noticed that one of my PWM outputs, planned on Port 3, was not selectable in the planner. Note the scroll bar at the bottom of the selection window.

When referencing the datasheet I see that I am supposed to be able to use port P1 or P3.

I wanted to confirm if P3 can in fact operate the PWM as these two pieces of documentation are inconsistent.

I am seeing the same issue on GPIOTE20 and would like confirmation there as well.

Was also surprised to find that the comparators are not listed in the pin planner (LPCOMP or COMP).

Thanks for any insights!

[tesc]

Hi,

Please note that while made by a Nordic employee, the pin planner (https://pinplanner.app/) is not an official Nordic application. There is also a disclamer about this at the bottom of the pin planner page.

If there are any discrepancies between the pin planner and official documentation, the official documentation is to be trusted. In this case, the datasheet states that GPIO port P3 can be used for PWM, for all three PWM instances.

I have notified Helmut Lord (who made the pin planner tool) about the issue, so that he can fix it. Thank you for the report!

Regards,
Terje

[Adam Broders]

While you're already relaying information to Helmut, perhaps he can also look at GPIOTE as well? I believe this one is also supposed to support port 3, however we have not tested it on our side.

It would also be great if the comparators (LPCOMP and COMP) were added. I've set them up as GPIO's just to make sure I claim them, but it doesn't properly check usage of resources.

[tesc]

Hi,

Thanks for the update. He looked into the GPIOs and fixed that one yesterday, as well as will look into the LPCOMP and COMP. Thanks again, for sharing your findings!

Regards,
Terje