klipper-dgus/klippy/extras/gcode_button.py

46 lines
1.8 KiB
Python

# Support for executing gcode when a hardware button is pressed or released.
#
# Copyright (C) 2019 Alec Plumb <alec@etherwalker.com>
#
# This file may be distributed under the terms of the GNU GPLv3 license.
import logging
class GCodeButton:
def __init__(self, config):
self.printer = config.get_printer()
self.name = config.get_name().split(' ')[-1]
self.pin = config.get('pin')
self.last_state = 0
buttons = self.printer.try_load_module(config, "buttons")
buttons.register_buttons([self.pin], self.button_callback)
gcode_macro = self.printer.try_load_module(config, 'gcode_macro')
self.press_template = gcode_macro.load_template(config, 'press_gcode')
self.release_template = gcode_macro.load_template(config,
'release_gcode', '')
self.gcode = self.printer.lookup_object('gcode')
self.gcode.register_mux_command("QUERY_BUTTON", "BUTTON", self.name,
self.cmd_QUERY_BUTTON,
desc=self.cmd_QUERY_BUTTON_help)
cmd_QUERY_BUTTON_help = "Report on the state of a button"
def cmd_QUERY_BUTTON(self, gcmd):
gcmd.respond_info(self.name + ": " + self.get_status()['state'])
def button_callback(self, eventtime, state):
self.last_state = state
template = self.press_template
if not state:
template = self.release_template
try:
self.gcode.run_script(template.render())
except:
logging.exception("Script running error")
def get_status(self, eventtime=None):
if self.last_state:
return {'state': "PRESSED"}
return {'state': "RELEASED"}
def load_config_prefix(config):
return GCodeButton(config)