[mritun]

RO2040 isn’t slow - it’s literally one of the fastest on the market. It’s a dual core microcontroller that can easily run both cores at 133-250+ MHz.

https://github.com/Wren6991/PicoDVI

The GPIO on RPi is not very useful for precision work and you’re limited to using SPI (usually to talk to an auxiliary microcontroller). The GPIO on RP2040 is so good that you can use it as 24 channel 100Msps logic analyzer in a pinch.

https://github.com/gusmanb/logicanalyzer

[girvo]

Yeah anyone calling the RP2040 slow for GPIO hasn't used it in anger. The PIO is amazing.

[squarefoot]

Smaller CPU aside, how do its GPIOs compare performance-wise to the older PRU contained in TI Sitara CPUs used in BeagleBoards? Many complained about the small number of channels on TI processors (only 4 if memory serves) therefore I wonder if it could be considered a successor where very fast digital I/O is needed but power and memory to run Linux is not because it's being hosted and run on a bigger nearby CPU.