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Marlin waiting for restart after failure, wont allow reconnect

Posted by Andke

Andke

Marlin waiting for restart after failure, wont allow reconnect
December 03, 2020 04:48AM

Registered: 12 years ago
Posts: 102

When probing fail, and printer enter KILL state/ disconnects.

Previous Marlin 2.x on Atmega 2560 allowed reconnection, starting over
Newer Marlin 2.x on Bigtree STM32 controller require physical reset, before allowing reconnect.

How can I make it allow reconnect without physically get to the printers?

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Dust

Re: Marlin waiting for restart after failure, wont allow reconnect
December 03, 2020 07:00AM

Admin
Registered: 13 years ago
Posts: 7,000

You cant.

You where relying on a quirk of the controller to reboot.

The old mega2560 based board is the serial DTR line was held low it reboots the board (this was by design). This reboot happens when you reconnect to the controller. (which is most irritating)

Newer 32bit boards don't do this.

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Andke

Re: Marlin waiting for restart after failure, wont allow reconnect
December 03, 2020 08:26AM

Registered: 12 years ago
Posts: 102

Yes, I know the DTR - it usually works directly with the RESET pin.
There is no technical reason for the Marlin not to just halt until reset.
Marlin could very well do a "softer HALT", stop processing input until M999 or x seconds with inactivity. (a clear sign that the source stopped transmitting)

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Andke

Re: Marlin waiting for restart after failure, wont allow reconnect
December 03, 2020 08:55AM

Registered: 12 years ago
Posts: 102

please vote on [github.com] smiling smiley

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Dust

Re: Marlin waiting for restart after failure, wont allow reconnect
December 03, 2020 07:15PM

Admin
Registered: 13 years ago
Posts: 7,000

That would be a no vote.

This is a safety issue.

If this fails, you need to go to your printer and sort it out!