Triggering 'Load Filament' prompt with a macro

Surgikill

Hello all,

I am setting up triggers so that I can load/unload filament with physical buttons/filament sensors on my machine. I would like to have it so one of these triggers activates the 'Load Filament' prompt. I have not been able to find anywhere in the documentation if this is possible. Is it only something within DWC?

Picture of the prompt I am talking about:

Can anybody help me with this? I know I could create a message with M291, and then select the filaments from there, but that seems to be a very roundabout way of doing it, and I need to make sure that the filaments in the dialog stay synced with the filaments in my filaments directory.

Thank you

droftarts

@Surgikill M701 triggers the 'load filament' dialogue. M702 triggers the unload filament, M703 configures filaments. See https://docs.duet3d.com/en/User_manual/Reference/DWC_filaments

Ian

chrishamm

@droftarts Not quite right, M701 is triggered by the "load filament" dialog when a filament is selected.

@Surgikill The dialog itself is a DWC-only feature. But you might be able to implement a work-around using a multiple choice M291 dialog (M291 S4). Otherwise you'd have to write a DWC plugin or fork DWC.

droftarts

@chrishamm Oops! Though could you trigger it by raising an event? eg

M957 E"filament-error" D0 P3

Ref
https://docs.duet3d.com/en/User_manual/Reference/Gcodes#m957-raise-event
https://docs.duet3d.com/User_manual/RepRapFirmware/Events
https://docs.duet3d.com/User_manual/Connecting_hardware/Sensors_filament#event-system-filament-error-events

Ian

Surgikill

@droftarts If I trigger it using a filament error event, then it's just going to go into the 'filament-error.g' macro, and I end up in the same boat of not being able to get the dialog to pop up on screen with a physical input. It seems like the only way to trigger this dialog is with the button on DWC.

@chrishamm I know I can do it with M291, but that seems pretty clunky, unless there is a way I can extract the filaments by filepath in a subdirectory. I'm not sure of a way to do this.

chrishamm

@droftarts No, that dialog is a DWC-only feature and it isn't coupled to any firmware mechanism.

@Surgikill You could write a DWC plugin which reacts to a specific global variable change and which displays a filament dialog whenever that variable changes. But of course that would require some coding skills, yet it should be technically possible.

Surgikill

@chrishamm So I'm guessing there is no way I can implement a M291 prompt that pulls variables based on filepaths inside a folder?

dc42

@Surgikill you can certainly have a trigger generate a M291 dialog.

Surgikill

@dc42 Yes, I am doing that now. However, I want the prompt to contain options that are dynamically created based on the content of "0:/filaments". I don't want to update the prompt every time I add a filament, or modify the name of a filament. Just like how DWC creates the prompt when pressing the 'Load Filament' button.

droftarts

@Surgikill As far as I'm aware, the list of filaments isn't stored in the Object Model, only the filaments directory (though do check here: https://github.com/Duet3D/RepRapFirmware/wiki/Object-Model-Documentation). I don't know if you could read the filaments directory contents in as an array, then use that as your list. Someone better at Meta Gcode than me would have to advise you if this is possible.

Ian