Can't print with daemon.g with 1sec loop

zapta

When I add a daemon.g with a 1 sec infinite loop (as recommended for 1sec events), I can't print anymore.

while true
  G4 P1000   ; Wait 1sec
  echo {"Loop " ^ iterations}

I do see the console messages every sec, upload from Prusa Slicer goes normal, the printer enters the Printing state, but nothing happens and the bed heater does start heating as it should. If I remove daemon.g, everything works well.

Any suggestions?

I am using this version

EDIT: The system config and macros, and a sample gcode file I try to print, are here https://github.com/zapta/temp_public/tree/main/bug_report_files

zapta

One more observation, when I upload the file and the printer enter Printing mode, I see in the console messages as if a new daemon.g loop started in parallel to the existing one.

Phaedrux

Does it behave the same with G4 S1 instead of P1000?

Does it behave the same with 3.5 RC1? Or RC2?

zapta

@Phaedrux, same with the daemon.g below. I will try the RC and will report here.

while true
  G4 S1 ; Wait 1sec
  echo {"Loop " ^ iterations}

zapta

@Phaedrux, to upgrade to 3.5.0 RC1 (this is the latest I find on github), do I just need to upload Duet3Firmware_Mini5plus.uf2 via the web interface?

Phaedrux

Yes, and you'll also have to update DWC.

zapta

What file is it and how do I install it?

(I am using a standalone Duet Mini, no Raspberry Pi)

zapta

@Phaedrux, found the problem. 100% my fault. My Prusa slicer startup code injects the snippet below to the files I send to the printer. That's a result of lazy programming. Thanks for your help.

...
; This forces an immediate update of the neopixels color
M98 P"/sys/daemon.g"
...