I did a lot of tinkering with the I2C protocol in a Pico to Pico configuration and had no real results. It seemed the implementation was really steered towards master-slave mode of pre-addressed devices. Trying to initialize anything outside of 0 for an address did not seem to work on any machine.I2C command.
Is it possible to use it as a internal communications bus in a Pico to Pico configuration?