<p><span class="h-card" translate="no"><a href="https://mastodon.social/@whitequark" class="u-url mention">@<span>whitequark</span></a></span> Multidrop SWD????</p><p>Honestly I find even multidrop JTAG is very rarely used. The most I see is like a boundary scan TAP and a programming/debug TAP on a single physical chip, but multiple packages in one scan chain are not common.</p><p>Vendor tooling being the main reason. I made a STM32 + Artix-7 board once and found it was near impossible to debug the system because I had to keep jumping between Vivado and OpenOCD and couldn't use both simultaneously to look at ILA and firmware view of the system.</p><p>And that's even before you get into voltage level compatibility issues.</p>
