Thonny with Micropython on PICO W

Paul Naish

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Mar 1, 2023, 9:09:14 AM3/1/23

to thonny

I notice the following behavior on my PICO W with a BOOT.PY and MAIN.PY installed.

On a POWER CYCLE, the reset cause is 1 and both programs run
On a RESET, the reset cause is 3 and both programs run
On a SOFT_RESET, the reset cause is 3 and only BOOT runs.

My question is on a SOFT_RESET is PICO W running BOOT and ignoring MAIN or is Thonny manually running BOOT.

I'm trying to work out how to properly test with Thonny and the above behaviors.

Thanks

Paul Naish

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Mar 2, 2023, 8:07:57 PM3/2/23

to thonny

I was able to show that PICO W running Micropython, standalone, works properly in that it runs BOOT and MAIN under all circumstances. When Thonny is connected to the PICO W, the soft_reset only runs BOOT and not MAIN. This may not be a problem but I would suggest that it is documented.

See this post in the Micropython Forum for details https://github.com/orgs/micropython/discussions/10884

Aivar Annamaa

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Mar 12, 2023, 9:58:40 AM3/12/23

to thonny

> On a SOFT_RESET

How did you invoke SOFT_RESET?

Thonny uses raw-REPL under the hood, i.e. if you sent byte x04 to your device, it would only run boot.py. See https://groups.google.com/g/thonny/c/z78gZQbVOs4/m/wt-0-Tq3BAAJ for more details

Best regards,
Aivar

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