[BUG] Powerloss not working

[bart-tech3d]

Did you test the latest bugfix-2.1.x code?

Yes, and the problem still exists.

Bug Description

if I turn on the powerloss recovery function in the menu, the printer starts to jam during printing, sometimes the display goes black. However, after a power outage, the printer will not offer the option to continue printing.

Bug Timeline

After compile Marlin 2.1.x bugfix

Expected behavior

After the power supply is interrupted, a "PLR" file is saved on the SD card or USB flash drive, which the printer records at start-up and prompts to continue printing.

Actual behavior

The "PLR" file probably won't even be created, the printer will start jamming, and anyway, the powelsoss function doesn't seem to be there. I also tried compile only with SD, but this did not help. With Marlin 2.0. no problem with Robin nano V2.0.

Steps to Reproduce

No response

Version of Marlin Firmware

Marlin-2.1.x bugfix

Printer model

own model

Electronics

MKS robin nano V3.0 or 3.1 + TMC2209

Add-ons

No response

Bed Leveling

ABL Bilinear mesh

Your Slicer

Prusa Slicer

Host Software

SD Card (headless)

Don't forget to include

• [X] A ZIP file containing your Configuration.h and Configuration_adv.h.

Additional information & file uploads

I can't give a LOG output because I can't connect to the serial port to pronterface (printrun) with the nano V3.0 board. config_files.zip

[firepower9966]

Are you using MKS PWC or similar device? https://a.aliexpress.com/_mMDuwNS

[shabgarde]

@thisiskeithb I have the same issue with marlin bufix2.1.x on the mks robin nano v3.1 . Please share if you have any solution #define MKS_TS35_V2_0 #define TFT_LVGL_UI

[bart-tech3d]

not yet, but I would like to try pwc. But first, I will try to simulate it by manually connecting the powerloss pin activation during printing and then turning off the printer.

[bart-tech3d]

I integrated to PSU MKS PWC V3.1. The shutdown works, the PLR ​​file is saved in the event of an outage. But there were two problems:

1. absolute ignoring of PLR file (both SD and USB disk). He acts like he doesn't exist -I solved this by editing cardreader.cpp , where I commented out the original // Check for PLR file. //TERN_(POWER_LOSS_RECOVERY, if (recovery.check()) do_auto = false); and put the following lines in the " if (stat) { " condition: // Check for PLR file after mounting the media DEBUG_ECHOLNPGM("Checking for PLR file..."); recovery.check(); // Check for PLR file, this will trigger the existing behavior if found

Only then did the printer respond to the presence of the PLR ​​file

2. The restore starts from the beginning as if the last position was not saved and I can't figure out why.

[bart-tech3d]

my files

power_loss_my_files.zip

[github-actions[bot]]

Greetings from the Marlin AutoBot! This issue has had no activity for the last 90 days. Do you still see this issue with the latest bugfix-2.1.x code? Please add a reply within 14 days or this issue will be automatically closed. To keep a confirmed issue open we can also add a "Bug: Confirmed" tag.

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[github-actions[bot]]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.