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Diffstat (limited to 'docs/Command_Templates.md')
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diff --git a/docs/Command_Templates.md b/docs/Command_Templates.md index 47f7755e..26271b75 100644 --- a/docs/Command_Templates.md +++ b/docs/Command_Templates.md @@ -396,3 +396,38 @@ gcode: ``` UPDATE_DELAYED_GCODE ID=report_temp DURATION=0 ``` + +### Save Variables to disk + +If a +[save_variables config section](Config_Reference.md#save_variables) +has been enabled, `SAVE_VARIABLE VARIABLE=<name> VALUE=<value>` can be +used to save the variable to disk so that it can be used across +restarts. All stored variables are loaded into the +`printer.save_variables.variables` dict at startup and can be used in +gcode macros. to avoid overly long lines you can add the following at +the top of the macro: +``` +{% set svv = printer.save_variables.variables %} +``` + +As an example, it could be used to save the state of 2-in-1-out hotend +and when starting a print ensure that the active extruder is used, +instead of T0: + +``` +[gcode_macro T1] +gcode: + ACTIVATE_EXTRUDER extruder=extruder1 + SAVE_VARIABLE VARIABLE=currentextruder VALUE='"extruder1"' + +[gcode_macro T0] +gcode: + ACTIVATE_EXTRUDER extruder=extruder + SAVE_VARIABLE VARIABLE=currentextruder VALUE='"extruder"' + +[gcode_macro START_GCODE] +gcode: + {% set svv = printer.save_variables.variables %} + ACTIVATE_EXTRUDER extruder={svv.currentextruder} +``` |