Pimoroni Pico Plus 2

[David Boddie]

Following up on the thread about the Pi Pico 2 last year:
https://groups.google.com/g/inferno-os/c/HHSRUwoTKQY

I bought a Pimoroni Pico Plus 2, which is based on the RP2350 and also has
some useful headers and 8MB PSRAM. The idea being that if 520KB RAM wasn't
enough, I could enable the PSRAM and use two memory regions for the heap.

You can find a build on the ports page:
https://dboddie.github.io/inferno-ports/

It should also work on a regular Raspberry Pi Pico 2 if a UART to serial
adaptor is connected to GPIOs 4 and 5 because it uses UART1 for the console.
This is accessed via the QW/ST connector on the Pico Plus 2.

I've only done basic testing on this port. I'd like to enable the PSRAM and
explore the PIO subsystem. In the future, it could be interesting to look at
other RP2350 boards, especially those that can connect to DVI output adapter
boards like the Adafruit Feather RP2350.

David

[da...@boddie.org.uk]

On Saturday, 18 January 2025 at 21:19:38 UTC+1 da...@boddie.org.uk wrote:

It should also work on a regular Raspberry Pi Pico 2 if a UART to serial
adaptor is connected to GPIOs 4 and 5 because it uses UART1 for the console.
This is accessed via the QW/ST connector on the Pico Plus 2.

 

I've now added basic USB support so, in theory, you don't need a separate USB

adaptor to access the console, only terminal software that can talk via a TTY

device: https://dboddie.gitlab.io/inferno-diary/2025-07-04.html