Support for Raspberry Pi Pico

[FDelporte]

Hi, did someone try to take this project to the Raspberry Pi Pico already?

https://www.raspberrypi.com/products/raspberry-pi-pico-2/
Version 2 could be a nice challenge as it has two types of cores:
Dual Arm Cortex-M33 or dual Hazard3 RISC-V processors @ 150MHz

[mikeakohn]

Hmm.. naken_asm supports both ARM (32 bit) and RISC-V, so technically it should work. I'm not sure if there are any specific details for that device though. Is it a raw chip or does it run a realtime OS like the ESP32 does?

[FDelporte]

Good question @mikeakohn ... I'm not so experienced in this topic, but I found:
The RP2350 Pro Micro works with C/C++ using the Pico SDK and MicroPython development environments.

https://www.tomshardware.com/raspberry-pi/raspberry-pi-pico/whats-inside-the-raspberry-pi-pico-2s-rp2350

[mikeakohn]

I found this:

https://metebalci.com/blog/using-a-pico2-rp2350-without-the-pico-sdk-build-system/

Looks like there's a small header at the top that has information about the executable code. If I'm reading this right, it'd be possible to either manually add some .data to the top of the file or I could add a .pico file format for reading / writing.

I think I'll have to pick up one of these boards to mess with it.

[FDelporte]

That would be wonderful! That would be a nice extra #JavaOnRaspberryPi achievement and something we would love to document further on pi4j.com if you could get me started... :-)

[mikeakohn]

Ordered from SparkFun... they're anywhere from 2 days to 2 weeks. Hopefully it comes before Thanksgiving so I can knock it out during some time off.

[FDelporte]

Looking forward to the results :-)

[mikeakohn]

Got it! I'll see if I have time this weekend...

[FDelporte]

Got it!

That's fast :-)

[mikeakohn]

Just a quick update: I added uf2 support to naken_asm.. but there's some special data sections that need to be added to make the boot loader accept the code. Haven't had time to dig too deep into that yet.