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General • Re: Use debug probe with PICO 2

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Sharing my progress limited as it is.

It seems clear there is no official version of openocd that supports RP2350.
At some point in the past raspberry pi had a github repo openocd-2350 but it is gone.
I saw a link to it on the official openocd repo on gerrit.

The openocd available to install on a raspberry pi 4 does not have support for RP2350.

More details if you want them.

I'm a software guy but I broke out the soldering iron and soldered the headers on the PICO 2 and the three header pins for the debug port.
Picture of my work included. Don't be too critical :-)

The Pico 2 worked fine with thonny and a USB cable.
I moved on to trying the debug probe.

I tried launching openocd the usual way:

Code:

sudo openocd -f interface/cmsis-dap.cfg -f target/rp2040.cfg -c "adapter speed 5000"
Openocd would not connect but minicom would.

I had a thought and googled "openocd rp2350.cfg". I got some hits from the gerrit site for openocd.
I am not gerrit literate.
I blindly downloaded the file and copied it to /usr/share/openocd/scripts/target.

I tried the command

Code:

sudo openocd -f interface/cmsis-dap.cfg -f target/rp2350.cfg -c "adapter speed 5000"
Openocd now connected but gdb did not.

I am successful using the debug probe and gdb with a PICO H.
pico2_w_headers.jpg

Statistics: Posted by cpottle9 — Sat Jan 11, 2025 9:27 pm



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