101 lines
4.4 KiB
Python
101 lines
4.4 KiB
Python
# Pause/Resume functionality with position capture/restore
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#
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# Copyright (C) 2019 Eric Callahan <arksine.code@gmail.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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class PauseResume:
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def __init__(self, config):
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self.printer = config.get_printer()
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self.gcode = self.printer.lookup_object('gcode')
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self.recover_velocity = config.getfloat('recover_velocity', 50.)
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self.v_sd = None
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self.is_paused = False
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self.sd_paused = False
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self.pause_command_sent = False
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self.printer.register_event_handler("klippy:connect",
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self.handle_connect)
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self.gcode.register_command("PAUSE", self.cmd_PAUSE,
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desc=self.cmd_PAUSE_help)
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self.gcode.register_command("RESUME", self.cmd_RESUME,
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desc=self.cmd_RESUME_help)
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self.gcode.register_command("CLEAR_PAUSE", self.cmd_CLEAR_PAUSE,
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desc=self.cmd_CLEAR_PAUSE_help)
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self.gcode.register_command("CANCEL_PRINT", self.cmd_CANCEL_PRINT,
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desc=self.cmd_CANCEL_PRINT_help)
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webhooks = self.printer.lookup_object('webhooks')
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webhooks.register_endpoint("pause_resume/cancel",
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self._handle_cancel_request)
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webhooks.register_endpoint("pause_resume/pause",
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self._handle_pause_request)
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webhooks.register_endpoint("pause_resume/resume",
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self._handle_resume_request)
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def handle_connect(self):
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self.v_sd = self.printer.lookup_object('virtual_sdcard', None)
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def _handle_cancel_request(self, web_request):
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self.gcode.run_script("CANCEL_PRINT")
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def _handle_pause_request(self, web_request):
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self.gcode.run_script("PAUSE")
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def _handle_resume_request(self, web_request):
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self.gcode.run_script("RESUME")
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def get_status(self, eventtime):
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return {
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'is_paused': self.is_paused
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}
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def is_sd_active(self):
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return self.v_sd is not None and self.v_sd.is_active()
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def send_pause_command(self):
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# This sends the appropriate pause command from an event. Note
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# the difference between pause_command_sent and is_paused, the
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# module isn't officially paused until the PAUSE gcode executes.
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if not self.pause_command_sent:
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if self.is_sd_active():
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# Printing from virtual sd, run pause command
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self.sd_paused = True
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self.v_sd.do_pause()
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else:
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self.sd_paused = False
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self.gcode.respond_info("action:paused")
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self.pause_command_sent = True
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cmd_PAUSE_help = ("Pauses the current print")
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def cmd_PAUSE(self, gcmd):
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if self.is_paused:
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gcmd.respond_info("Print already paused")
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return
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self.send_pause_command()
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self.gcode.run_script_from_command("SAVE_GCODE_STATE NAME=PAUSE_STATE")
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self.is_paused = True
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def send_resume_command(self):
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if self.sd_paused:
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# Printing from virtual sd, run pause command
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self.v_sd.do_resume()
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self.sd_paused = False
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else:
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self.gcode.respond_info("action:resumed")
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self.pause_command_sent = False
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cmd_RESUME_help = ("Resumes the print from a pause")
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def cmd_RESUME(self, gcmd):
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if not self.is_paused:
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gcmd.respond_info("Print is not paused, resume aborted")
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return
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velocity = gcmd.get_float('VELOCITY', self.recover_velocity)
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self.gcode.run_script_from_command(
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"RESTORE_GCODE_STATE NAME=PAUSE_STATE MOVE=1 MOVE_SPEED=%.4f"
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% (velocity))
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self.send_resume_command()
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self.is_paused = False
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cmd_CLEAR_PAUSE_help = (
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"Clears the current paused state without resuming the print")
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def cmd_CLEAR_PAUSE(self, gcmd):
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self.is_paused = self.pause_command_sent = False
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cmd_CANCEL_PRINT_help = ("Cancel the current print")
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def cmd_CANCEL_PRINT(self, gcmd):
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if self.is_sd_active() or self.sd_paused:
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self.v_sd.do_cancel()
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else:
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gcmd.respond_info("action:cancel")
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self.cmd_CLEAR_PAUSE(gcmd)
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def load_config(config):
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return PauseResume(config)
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