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