On Fri, Jul 10, 2020 at 10:15:09AM -0700, Michael Cheponis wrote: > Thank you. > > It's completely unclear to me, though, why we'd want to use the 'mini UART' > vs the Main uart, because when we use the mini uart, *we have no access to > the regular uart via the rpi pins*. https://elinux.org/RPi_BCM2835_GPIOs > see how the 40 pins on the connector are mapped, with alternates.
We (and others) use the mini uart for console on RPI3 to keep the real UART for bluetooth. The mini uart has a limited FIFO, which means you cannot run bluetooth at best speed. It would also be subject to the changes in the core frequencies like the console is now. You can chose what you want to get: - have problems with serial console, that's the default - have problems with bluetooth - run on fixed frequency You can use settings in config.txt and/or load a DTB overlay to select this. So there are only two questions, what should be the default and how easy is it for a user to do this configuration. Greetings,
