Agree RP2040 / RP2350 is great for debug and UART access! I wrote[0] about using picoprobe with this device as well.
[0] https://danielmangum.com/posts/risc-v-bytes-accessing-pineci...
[0] https://danielmangum.com/posts/risc-v-bytes-accessing-pineci...
I've literally got a Pi Debug Probe and a nRF52840 dev board on my desk, so I gave it a shot - and it works just fine. Make sure the core is awake when you try to connect for debug, or connect under reset; SWD goes to sleep with the rest of the chip.
> All that’s officially supported is using it to debug a raspberry pi
The Pi Debug Probe is a generic DAPlink probe, and will work for pretty much any Cortex-M part. I routinely use mine for debugging STM32 parts.
The difference between Pico and Pi Debug Probe are those 100Ω resistors on CLK/DIO lines, so I guess it working for you means I need to try again with resistors soldered.
Thanks for verifying it works!
Lower speed or try one of the other fifty debug firmware projects.
https://github.com/raspberrypi/debugprobe
https://github.com/bugadani/rusty-probe-embassy
https://github.com/probe-rs/rusty-probe
https://github.com/ciniml/rust-dap
https://github.com/ccattuto/rp2040-dap-probe
Not all firmware implements all modes or the CMSIS-DAP spec correctly (most don't implement JTAG, either.)
Just checked - of course if works fine on proper pins