Update needed to "Raspberry Pi Debug Probe" for PICO 2

[cpottle9]

I see two issues that need to be addressed.

1. There is no PICO2 H. Need to describe manually installing headers.

2. The openocd version available on the PI 4 bookworm does not support the 2350.
   I eventually found the repo https://github.com/raspberrypi/openocd/tree/sdk-2.0.0 and built openocd.
   Not trivial.
   You need to either provide a detailed recipe or provide downloadable binaries.

[cpottle9]

Someone pointed out on Raspberry PI Forums that instructions for building openocd for PICO 2 is are included in Appendix A of https://datasheets.raspberrypi.com/pico/getting-started-with-pico.pdf.

I think that information belongs with the rest of the Debug Probe documentation here: https://www.raspberrypi.com/documentation/microcontrollers/debug-probe.html.

[lurch]

There is no PICO2 H. Need to describe manually installing headers.

See also #3831 (which has unfortunately auto-closed) EDIT: Now re-opened

The openocd version available on the PI 4 bookworm does not support the 2350.

That's a good point. @P33M and @XECDesign we currently have openocd 0.12.0-1+rpt1 (which supports RP2040) in our APT repos, but it probably ought to be updated to a version that supports RP2350 ?

[XECDesign]

I haven't heard anything from any maintainer of our OpenOCD fork asking for the package to be updated, so I assume it's not ready yet.

[cpottle9]

I guess the process for updating openocd for raspberry pi os would include upstreaming the RP2350 changes to the main openocd repo and then waiting for an official version.
That is the only way to ensure all the other hardware targest are supported.

In the meantime I think it would be sufficient to update the debug probe documentation providing a link to appendix A of "Getting started with Raspberry Pi".

I wasted a couple of finding raspberry pi openocd repo and figuring out how to build it.
This small change would have helped me immensely.

Lastly, I agree with issue #3831.
A photo of a PICO 2 and PICO W with the 3 pin header soldered in place and the cable connected.