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90 lines
3.6 KiB
Python
90 lines
3.6 KiB
Python
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# Support for Marlin/Smoothie/Reprap style firmware retraction via G10/G11
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#
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# Copyright (C) 2019 Len Trigg <lenbok@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 FirmwareRetraction:
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def __init__(self, config):
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self.printer = config.get_printer()
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self.retract_length = config.getfloat('retract_length', 0., minval=0.)
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self.retract_speed = config.getfloat('retract_speed', 20., minval=1)
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self.unretract_extra_length = config.getfloat(
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'unretract_extra_length', 0., minval=0.)
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self.unretract_speed = config.getfloat('unretract_speed', 10., minval=1)
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self.z_hop = config.getfloat('z_hop', 0., minval=0.)
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self.unretract_length = (self.retract_length
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+ self.unretract_extra_length)
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self.is_retracted = False
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self.gcode = self.printer.lookup_object('gcode')
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self.gcode.register_command('SET_RETRACTION', self.cmd_SET_RETRACTION)
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self.gcode.register_command('GET_RETRACTION', self.cmd_GET_RETRACTION)
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self.gcode.register_command('G10', self.cmd_G10)
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self.gcode.register_command('G11', self.cmd_G11)
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def get_status(self, eventtime):
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return {
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"retract_length": self.retract_length,
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"retract_speed": self.retract_speed,
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"unretract_extra_length": self.unretract_extra_length,
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"unretract_speed": self.unretract_speed,
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"z_hop": self.z_hop
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}
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def cmd_SET_RETRACTION(self, params):
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self.retract_length = self.gcode.get_float(
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'RETRACT_LENGTH',
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params, self.retract_length, minval=0.)
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self.retract_speed = self.gcode.get_float(
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'RETRACT_SPEED',
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params, self.retract_speed, minval=1)
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self.unretract_extra_length = self.gcode.get_float(
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'UNRETRACT_EXTRA_LENGTH',
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params, self.unretract_extra_length, minval=0.)
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self.unretract_speed = self.gcode.get_float(
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'UNRETRACT_SPEED',
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params, self.unretract_speed, minval=1)
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self.z_hop = self.gcode.get_float(
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'Z_HOP',
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params, self.z_hop, minval=0.)
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self.unretract_length = (self.retract_length
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+ self.unretract_extra_length)
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self.is_retracted = False
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def cmd_GET_RETRACTION(self, params):
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msg = ("RETRACT_LENGTH=%.5f RETRACT_SPEED=%.5f "
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"UNRETRACT_EXTRA_LENGTH=%.5f UNRETRACT_SPEED=%.5f "
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"Z_HOP=%.5f"
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% (self.retract_length, self.retract_speed,
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self.unretract_extra_length, self.unretract_speed,
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self.z_hop))
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self.gcode.respond_info(msg)
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def cmd_G10(self, params):
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if not self.is_retracted:
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self.gcode.run_script_from_command(
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"SAVE_GCODE_STATE NAME=_retract_state\n"
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"G92 E0\n"
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"G91\n"
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"G1 E-%.5f F%d\n"
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"G1 Z%.5f\n"
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"RESTORE_GCODE_STATE NAME=_retract_state"
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% (self.retract_length, self.retract_speed*60, self.z_hop))
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self.is_retracted = True
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def cmd_G11(self, params):
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if self.is_retracted:
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self.gcode.run_script_from_command(
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"SAVE_GCODE_STATE NAME=_retract_state\n"
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"G92 E0\n"
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"G91\n"
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"G1 E%.5f F%d\n"
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"G1 Z-%.5f\n"
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"RESTORE_GCODE_STATE NAME=_retract_state"
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% (self.unretract_length, self.unretract_speed*60, self.z_hop))
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self.is_retracted = False
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def load_config(config):
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return FirmwareRetraction(config)
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