Need A JTAG Adapter? Use Your Pico!
JTAG is a powerful interface for low-level debugging and introspection of all kinds of devices; CPUs, FPGAs, MCUs and a whole lot of complex purpose-built chips like RF front-ends. JTAG adapters can be quite obscure; or cost a pretty penny; which is why we’re glad to see that Adam Taylor from ADIUVO made a tutorial on using your Pi Pico board as a JTAG adapter. This relies on a project called XVC-Pico by Dhiru Kholia; and doesn’t require anything other than a Pi Pico board itself; the XVC-Pico provides both a RP2040 firmware implementing the XVC (Xilinx Virtual Cable) specification and a daemon that connects to the Pico board and interfaces to tools like Vivado.
Read more: https://hackaday.com/2022/04/11/need-a-jtag-adapter-use-your-pico/