Pico as SWD documentation

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
42/100
Issue type
Documentation
Clarity
Mostly clear
Activity status
Stale
Domain
documentation, embedded-iot

Research direction

Review page 21 of the 2024-05-02 edition of Getting Started with Raspberry Pi Pico, focusing on the SWD Port wiring and the following debug-probe tip. Reproduce the JST SWD-header connection with two Pico boards and OpenOCD, then document corrected wiring guidance that matches a successful debugger-to-target connection.

Written by the indexing model from the issue text.

Description

On page 21 of the 2024-05-02 version of Getting Started with Raspberry Pi Pico, under SWD Port wiring it says to connect GND(Pin 20) to SWD GND, GPIO24(Pin 18) to SWDIO and GPIO25(Pin 25) to SWCLK for SWD. This configuration works.

Right after that in the manual is a tip that says "When using the Pico as a debug probe, connect the GND, SWCLK and SWDIO pins on the debugging board to the matching pins on the board under test."

To me, this implies that a connecting the JST SWD headers on the two Pico's should work, but when I try this, while OpenOCD is able to connect to the debugger pico, it is not able to connect to the debug target pico.

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