M117 and Conditional GCode Statements

[mwolter]

M117 does not allow conditional gcode statements to be inserted into a string.

Standalone Duet 3

M117  {move.calibration.initial.deviation}

M117  hello {move.calibration.initial.deviation}

[OwenD]

Actually, this combination works with M117

M117 {"Axis "  ^  (move.axes[0].letter)  ^  "not homed.  Please wait while all axes are homed"}

BUT

When I added a space at the start of the second string it failed.
Then it worked.... sometimes

M117 {"Axis "  ^  (move.axes[0].letter)  ^  " is not homed.  Please wait while all axes are homed"}

Not sure if there's something screwy going on with caching in DWC here, but the same command sometimes works and sometimes doesn't

[Phaedrux]

What if you enclose the hello in double quotes. "hello"

[OwenD]

I can confirm that the commands for the various dialog boxes (M117, M291 )etc don't accept conditional code.
I swear I posted about it in the firmware wish list but can't find it.

I wouldn't call it a "bug"
Those command require a quoted string.

BTW, your M117 example should be "hello" ^ {my_conditional_code}

But it still won't work

[Phaedrux]

@OwenD It may have been moved to the Beta firmware forum
All of your posts should still show up in your user profile

[gtj0]

I asked about it in the DSF Development forum as well but never got an answer...
https://forum.duet3d.com/topic/15662/dsf-examples-for-code-expressions-are-now-preparsed

Doesn't appear to work in standalone mode either.

[OwenD]

Actually, this combination works with M117

M117 {"Axis "  ^  (move.axes[0].letter)  ^  "not homed.  Please wait while all axes are homed"}

BUT

When I added a space at the start of the second string it failed.
Then it worked.... sometimes

M117 {"Axis "  ^  (move.axes[0].letter)  ^  " is not homed.  Please wait while all axes are homed"}

Not sure if there's something screwy going on with caching in DWC here, but the same command sometimes works and sometimes doesn't

[OwenD]

HA!
Got it on M291
I swear I tried all this yesterday

M291 P{ "Axis "  ^  (move.axes[0].letter)  ^  " not homed.  Continue?"} R"Check axis" S3

[mwolter]

Thanks @OwenD, that works.

[dc42]

@OwenD said in M117 and Conditional GCode Statements:

Not sure if there's something screwy going on with caching in DWC here, but the same command sometimes works and sometimes doesn't

DWC doesn't display a message if it was exactly the same as the previous one.