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# 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.load_object(config, "buttons")
if config.get("analog_range", None) is None:
buttons.register_debounce_button(self.pin, self.button_callback, config)
else:
amin, amax = config.getfloatlist("analog_range", count=2)
pullup = config.getfloat("analog_pullup_resistor", 4700.0, above=0.0)
buttons.register_debounce_adc_button(
self.pin, amin, amax, pullup, self.button_callback, config
)
gcode_macro = self.printer.load_object(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)
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