Claude did most of the heavy lifting with this one. I was able to get the basic blinking functionality working with C++ but to bridge the Ferret code in was a little tricky due to the less user-friendly calling conventions when you aren't using one of the built-in SDKs e.g. for Arduino. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Ferret Lisp on RPi Pico Claude did most of the heavy lifting with this one. I was able to get the basic blinking functionality working with C++ but to bridge the Ferret code in was a little tricky due to the less user-friendly calling conventions when you aren't using one of the built-in SDKs e.g. for Arduino. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>