how to figure out from zephyr.dts which pins are free to use for PWM0 output

[weightwatcherphil]

I am using the nordic nRF5340 development board with the zephyr software environment.

I used an overlay file to assign pins to PWM0 output.

i can assign pins 0.04, p0.08, p0.21 and I see the output on my scope.

when assign pins p0.11 or p0.19  but I do not get any output.

In the attached .overlay file I put po.11 on lines 20 and 27.

I think some other device might be using these pins but I do not know how to read the zephr.dts file that is generated after my build to figure out which device I need to turn off.

8306.zephyr.dts0876.nrf5340dk_nrf5340_cpuapp.overlay

I have attached my .overlay file and my zephyr.dts file

any links you can provide that would teach me how to read the zephyr.dts file would be appreciated.

thanks

phil

phil

[droidecahedron]

Not sure if you're on the latest versions of plugins etc on vs code,

but there's an experimental new feature when you check out the device tree files in the vscode extension.

on the top right, when looking at a dts. there's this button

which lets you see it this way.

Perhaps this gui is helpful to you.

As for links on how to read dts files,

https://docs.zephyrproject.org/latest/build/dts/index.html has lots of great reading.

[Øivind]

Hi,

In addition to Johnny's reply, I thought I'd let you know that P0.11 is forwarded to the network core by default and P0.19 is by default used for UART0

[weightwatcherphil]

very helpful !!! 

thanks

[weightwatcherphil]

the link is complex and i am going through it.  thanks for the help.

phil

[weightwatcherphil]

you can close this ticket.

thanks

phil