TFT35 freezes before Purging

[MrKuskov]

Description

Biqu B1 Printer

Steps to reproduce

I am sending a file for printing flowrate_0_PLA_7m36s.zip all G-code commands pass normally until the M117 Purging command line 291 in the file. Then the screen freezes. If you send it to print from Marlin mode, then the file is printed. But it is not possible to go back to "Touch mode". The mode does not switch when holding the knob. The same happens when printing any files.

Expected behavior

Actual behavior

Hardware Variant

GD_TFT35_V3.0_B1_V27.x ### TFT Firmware Version & Main Board Firmware details

The TFT firmware version from February 20th. From February 17, it worked fine. Marlin 2.1.2.2

Additional Information

• Include a ZIP file containing your Configuration.h or use Pastebin and paste a link in this issue. Configuration.zip

• Provide pictures or links to videos that clearly demonstrate the issue.

[digant73]

If you are on the latest TFT firmware, do you have the new setting command_checksum enabled on TFT's config.ini file? eventually try to disable it (although it should not be related to the issue) and let me know the result. Thanks

When you start a print from a mode (e.g Marlin mode with serial_always_on enabled on config.ini) you cannot move to the other mode (e.g. Touch mode) and viceversa. You have to wait the print is completed or aborted.

EDIT: I tested your gcode file on two printers without any issue. Before M117 Purging gcode the nozzle temp needs to reach its target. After it was reached, the print started and terminated without any issue

[MrKuskov]

If you are on the latest TFT firmware, do you have the new setting command_checksum enabled on TFT's config.ini file? eventually try to disable it (although it should not be related to the issue) and let me know the result. Thanks

Yes. The function is available, I tried to turn it on and off in the screen settings. my screen settings via the link

EDIT: I tested your gcode file on two printers without any issue. Before M117 Purging gcode the nozzle temp needs to reach its target. After it was reached, the print started and terminated without any issue

Yes, in Marlin mode, I also type without problems. Printing freezes after line G1 X6.1 Y20 Z0.3 F5000.0; Move to start position line 290 in the code. When the hotend starts moving to the specified line, the screen stops responding. The "M117 Purging" line is no longer being executed. The command is executed without problems via Pronterface.

[MrKuskov]

I found out that printing is interrupted in "Touch mode" only if the card is installed in the USB or SD of the screen. Printing is normal when installed in the SD board.

[digant73]

@MrKuskov try with another SD card, if not already done. I have no issue at all on my printers (5 prints without any problem)

[MrKuskov]

I flashed the version from January 23rd. https://github.com/MrKuskov/BIGTREETECH-TouchScreenFirmware/blob/2ae78153bf685e901e504a04a88d9b6021450057/Copy%20to%20SD%20Card%20root%20directory%20to%20update/BIGTREE_GD_TFT35_V3.0_B1.27.x.bin Everything works correctly in it.

[digant73]

@MrKuskov please could you verify if the attached fw is properly working? You need to add the new command_checksum setting in config.ini file

BIGTREE_GD_TFT35_V3.0_B1.27.x.zip

[MrKuskov]

No, it doesn't work. The screen froze when the hotend moved to the starting point, but the hotend executed three more commands: completed two cleaning lines and moved to the center of the table. enabling or disabling the checksum command does not affect the operation. The screen freezes anyway

[digant73]

@MrKuskov ok thanks, I will continue to investigate. Could you please attach your config.ini file? so I will try to use it

[MrKuskov]

I have made a fork from your repository and am making changes to it for both the marlin firmware and the screen firmware https://github.com/MrKuskov/BIGTREETECH-TouchScreenFirmware/blob/master/Copy%20to%20SD%20Card%20root%20directory%20to%20update/config.ini

[digant73]

I have made a fork from your repository and am making changes to it for both the marlin firmware and the screen firmware https://github.com/MrKuskov/BIGTREETECH-TouchScreenFirmware/blob/master/Copy%20to%20SD%20Card%20root%20directory%20to%20update/config.ini

ok. I will use your config.ini file to try to replicate the issue

[digant73]

@MrKuskov Even with your config.ini file I have no issue. the only thing I saw is that command M280 at line 282 was skipped by Marlin (I received the Unknow Command message) due it is not configured/supported on my printer.

[MrKuskov]

I don't think it's about config.ini, I use default config.ini and the screen freezes on the firmware from February 20th. Now I'm back on the January 17th firmware and everything is working correctly. When flashing between versions, I use only a bin file with the same config.ini. The only thing is that when I upgrade to the old version, I get one error about the missing cheksum. Maybe the screen theme is to blame for the error? I'm using The Round Miracle Theme

[digant73]

@MrKuskov thanks for the clarifications. Every details is very important to replicate a bug and so to find and fix the issue. Yes the last version (you have the issue with) added only the new setting command_checksum. Is the working fw from January 17 or February 17? I will try to use also Round Miracle Theme (I'm currently on Unified Menu Material theme). Also are you using a language pack (e.g. loaded language_de.ini) or you are on hardcoded english language?

[MrKuskov]

Sorry I made a mistake. The firmware version is from January 23rd. This one. I use the ru language pack. But I tried switching to the en version. The screen freezes the same way.

[digant73]

ok, understood. If possible please update to latest version (merged today Feb-23). If you still have the issue, try to disable, one by one, LED Event feature and Comment parsing feature and let me know if without one of this feature the issue is no more present. thanks

[MrKuskov]

@digant73 Yes!!! The Event Led function is to blame for the screen freezes. When it is turned off, everything works correctly. If the function is enabled during printing, the screen freezes immediately.

[digant73]

ok thanks. Do you have a LED strip configured in your printer or a simple LED on the hotend?

[MrKuskov]

Multi-color RGB lights from Biqu B1

[digant73]

could you let me know which Marlin settings reported at the beginning of config.ini file (on section Supported Marlin Firmware Versions) are enabled and disabled on your Marlin?

[MrKuskov]

I have enabled all the settings specified at the beginning of the config.ini file in my Marlin Configuration.h Configuration_adv.h except for Z_STEPPER_AUTO_ALIGN. I have only one axis so far.

[MrKuskov]

If the function Event LED is enabled during printing, the screen freezes immediately.

But if I go to the LED menu, I can turn on any backlight colors and the screen works correctly.

[digant73]

Ok. I will check on LED Event code

[digant73]

please try if the issue is still present with the attached fw (enable again LED Event feature). Try also with PID process.

BIGTREE_GD_TFT35_V3.0_B1.27.x.zip

[MrKuskov]

@digant73 everything is working correctly. very good. thanks

[digant73]

ok. but remember that I commented out just a piece of code (the color on the knob is not set at the end of the process) to have a confirmation of the issue. I will provide a PR with the fix. Leave this bug report open, it will be automatically closed once the PR is merged. Thanks for support.

EDIT: Please if possible let me know if the attached fw is ok (that should fix the issue).

BIGTREE_GD_TFT35_V3.0_B1.27.x.zip

[MrKuskov]

EDIT: Please if possible let me know if the attached fw is ok (that should fix the issue).

Everything works.

[digant73]

thanks. The fix was also merged in the official btt fw just today.

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