How to format a string in gcode?

zapta

I am trying to send a serial messages that includes a string and a number but can't get the desired result. Any suggestions?

I am using Duet 3 Mini 5+ 3.4.0 (2022-03-15) and would prefer a workaround rather than upgrading at this point.

Test macro

M575 P2 B115200 S2

while iterations < 10
  M300 S4000 P50 ; Short beep
  M118 P5 S"[abc_"^iterations^"_xyz]"  ; Attempt 1
  M118 P5 S"[abc_{iterations}_xyz]"  ; Attemp 2
  G4 P1000 ; 1 sec Delay
  
M300 S4000 P1000 ; Long beep

Desired output

[abc_2_xyz]

Actual output

dc42

@zapta said in How to format a string in gcode?:

M118 P5 S"[abc_"^iterations^"_xyz]"

Try this:

M118 P5 S{"[abc_"^iterations^"_xyz]"}

When an expression is used as a parameter to a GCode command the entire expression must be enclosed in { } .

zapta

Thanks @dc42. That worked.