I'd bet SPI would work well but even easier would be to connect them to the Pi4 with USB. Both sides have software that makes the USB look like a serial port and the physical connection is done with off the shelf cable.
I've used M0 boards this way in the past and using USB lets you also cnet them to a Linux PC What I like about the Pico is that it can be SMT hand soldered. I can make a simple passive carrier board that has connectors and it is not hard to hand solder 0.1 inch pitch. The carrier board could be a Pi-hat On Thu, Jan 21, 2021 at 4:30 PM Dave Cole <linuxcncro...@gmail.com> wrote: > I wonder if these could act as SPI slaves to the RPI 4? > > I've been trying to buy two from Adafruit and they keep selling out and > then coming back in stock, and then selling out again! > > Dave > > On 1/21/2021 6:36 PM, andy pugh wrote: > > On Thu, 21 Jan 2021 at 21:52, Chris Albertson <albertson.ch...@gmail.com> > wrote: > > > >> This is an STM32 microcontroller. > > Are you sure? It is an ARM Cortex M0, like the STM32, but is it made by > ST? > > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Chris Albertson Redondo Beach, California _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
