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docs: Updates for gcode_macro naming (#2317) 

Add note about numbers in macro names.  Add note about variable name case restriction. Add set variable example.

Signed-off-by: David O Smith <davidosmith@gmail.com>
This commit is contained in:
David Smith 2020-01-06 10:59:40 -05:00 committed by KevinOConnor
parent baa0d2ff8c
commit 6972b6303d
2 changed files with 18 additions and 5 deletions
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14
config/example-extras.cfg
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@ -389,7 +389,9 @@
######################################################################
# G-Code macros (one may define any number of sections with a
# "gcode_macro" prefix).
# "gcode_macro" prefix). If G-Code macro names contain any numbers
# they must all be at the end of the macro's name.
# (example: test_macro25 is acceptable, but macro25_test3 is not).
#[gcode_macro my_cmd]
#gcode:
# A list of G-Code commands to execute in place of "my_cmd". See
@ -409,9 +411,13 @@
# One may specify any number of options with a "variable_" prefix.
# The given variable name will be assigned the given value (parsed
# as a Python literal) and will be available during macro expansion.
# For example, a config with "variable_fan_speed = 75" might have
# gcode commands containing "M106 S{ fan_speed * 255 }". Variables
# can be changed at run-time using the SET_GCODE_VARIABLE command.
# For example, a macro called set_fan with
# "variable_fan_speed = 75" might have gcode commands containing
# "M106 S{ fan_speed * 255 }". Variables can be changed at run-time
# using the SET_GCODE_VARIABLE command from within any G-Code Macro.
# Example, from a macro called my_macro2 I could state:
# "SET_GCODE_VARIABLE MACRO=set_fan VARIABLE=fan_speed VALUE=50"
# Variable names may not use upper case characters.
# Execute a gcode on a set delay.
#[delayed_gcode my_delayed_gcode]

9
docs/Command_Templates.md
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@ -1,6 +1,12 @@
This document provides information on implementing G-Code command
sequences in gcode_macro (and similar) config sections.
### G-Code Macro Naming
Case is not important when creating a G-Code macro name. MY_MACRO and
my_macro will evaluate the same and may be called in either upper or
lower case. If any numerical digits are used in the macro name they
must all be placed at the end of the name.
### Formatting of G-Code in the config
Indentation is important when defining a macro in the config file. To
@ -178,7 +184,8 @@ in future Klipper releases.
### Variables
The SET_GCODE_VARIABLE command may be useful for saving state between
macro calls. For example:
macro calls. Variable names may not contain any upper case characters.
For example:
```
[gcode_macro start_probe]