klipper-gcode-loader

This extension serves as an alternative to virtual_sdcard. With it, you can:

• pause/cancel print during custom print_start and other macros
• run macros as prints (PRINT_FROM_MACRO)
• reload macros without the need for a firmware restart (MACRO_RELOAD)
• include G-code from external gcode files (SDCARD_PRINT_FILE INCLUDE=1)

Installation

cd ~
git clone https://github.com/vertexbz/klipper-gcode-loader.git
cd ~/klipper/klippy/extras/
ln -s ~/klipper-gcode-loader/src gcode_loader

Moonraker Integration

To use the update manager, modify your Moonraker configuration as follows:

[update_manager klipper_gcode_loader]
type : git_repo
path : ~/klipper-gcode-loader
origin : https://github.com/vertexbz/klipper-gcode-loader.git
primary_branch : master
is_system_service : False

Klipper Configuration

For proper operation of gcode_loader, ensure it is defined before virtual_sdcard. Loading gcode_loader in this sequence allows it to take the place of virtual_sdcard while keeping the latter in place to satisfy Moonraker requirements.

[gcode_loader]

[virtual_sdcard]
path : /home/printer/gcode

Additional Configuration Options

[gcode_loader]
# A comma-separated list of macros to be executed without interruption
uninterrupted : T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11

G-Code Commands

MACRO_RELOAD

The G-code command MACRO_RELOAD [VARIABLES=1] [NAME=<macro name>] re-reads configuration files and reloads macros. By default, it adds new variables. To disable this behavior, use the VARIABLES=0 parameter. Alternatively, to replace current macro variables with those from the file, use VARIABLES=2. You can also restrict the reload by specifying the macro/template name with the NAME=... parameter.

PRINT_FROM_MACRO

Execute your custom macro as a print, pause it, or cancel it using the PRINT_FROM_MACRO MACRO=NAME PARAMS... command.

[gcode_macro MAX_FLOW_CALIB]
gcode :
    {% if printer.gcode_loader is defined and not printer.gcode_loader.is_virtual %}
    PRINT_FROM_MACRO MACRO=MAX_FLOW_CALIB {rawparams}
    {% else %}
    PRINT_START ...
    G-CODE...
    PRINT_END
    {% endif %}

SDCARD_PRINT_FILE INCLUDE=1 FILENAME=...

Additional INCLUDE=1 parameter in the SDCARD_PRINT_FILE G-code command allows the inclusion of G-code from a specified file.