Sending data from python server to Duet

pouryatorabi

Hi,
Right now I'm sending some M commands like M1585 with a Macro, and on the server side when I receive M1585 I run a function. That function returns a data that I want to send it back to the macro and do something with it. Can someone tell me the way of doing it?

adambx

Hi,

you could have a parameter in the macro like "param.R" for example.
If you call the macro with the parameter, it will act as if it received a result

M1585           ->  Server
                     ....calculate...
M1585 R{result} <-  Server

of course that's not synchronous. If you want to wait for the answer, another option would be to use a message box. That would be a little bit more complicated, although much more flexible

https://docs.duet3d.com/User_manual/Reference/Gcodes#m291-display-message-and-optionally-wait-for-response

Afaik there is no other way to wait for a message via GCODE...

pouryatorabi

@adambx
Hi,
Thank you for your reply, that's what I'm doing right now and I thought there might be a better option, but this is how I call a macro with python:

cc = CommandConnection()
cc.connect()  
cc.perform_simple_code('M98 P"/macros/SomeMacro" L{}'.format(val))

Is there any other safer or better way to all a macro with python server?

adambx

@pouryatorabi I can't think of anything, but am looking forward to suggestions, if there are any by others