Klipper3d / klipper

Klipper is a 3d-printer firmware
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rp2040: fix hang on startup on Twotrees SK1 toolhead board #6573

Open grafalex82 opened 1 month ago

grafalex82 commented 1 month ago

After upgrading to recent Klipper, the Twotrees SK1 toolhead's microcontroller does not boot normally. In most of the cases it hangs during startup, or falls into HardFault exception.

Using the onboard LED connected to GPIO23, setting it to on/off in different places of the initialization code it was found that the issue happens around configuring the PLLs. Moreover, adding a small delay at the end of pll_setup() function fixes the issue, and the board boots normally.

Notes:

JamesH1978 commented 1 month ago

Thank you for submitting a PR, pleas refer to point 3 in "What to expect in a review" in https://github.com/Klipper3d/klipper/blob/master/docs/CONTRIBUTING.md and provide a signed off by line.

Thanks James

amken3d commented 1 month ago

@grafalex82 I had similar issues on some custom boards that I have made. In my case, it turned out to be due to the flash not booting correctly. I had created a fix for that issue on this branch of my fork https://github.com/amken3d/klipper/tree/rp2040-add-support-for-additional-flash-chips. You can try it and see if it helps you.

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