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firmware_retraction: Implementation of tuneable G10/G11 firmware retraction (#1617)

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This supports getting and setting of retraction parameters without
having to restart klippy.

Signed-off-by: Len Trigg <lenbok@gmail.com>
This commit is contained in:
Len Trigg 2019-06-07 01:10:09 +12:00 • committed by KevinOConnor
parent d065787afc
commit 5989f7a8a6
3 changed files with 140 additions and 0 deletions
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klippy/extras/firmware_retraction.py Normal file
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# Support for Marlin/Smoothie/Reprap style firmware retraction via G10/G11
#
# Copyright (C) 2019 Len Trigg <lenbok@gmail.com>
#
# This file may be distributed under the terms of the GNU GPLv3 license.
class FirmwareRetraction:
def __init__(self, config):
self.printer = config.get_printer()
self.retract_length = config.getfloat('retract_length', 0., minval=0.)
self.retract_speed = config.getfloat('retract_speed', 20., minval=1)
self.unretract_extra_length = config.getfloat(
'unretract_extra_length', 0., minval=0.)
self.unretract_speed = config.getfloat('unretract_speed', 10., minval=1)
self.z_hop = config.getfloat('z_hop', 0., minval=0.)
self.unretract_length = (self.retract_length
+ self.unretract_extra_length)
self.is_retracted = False
self.gcode = self.printer.lookup_object('gcode')
self.gcode.register_command('SET_RETRACTION', self.cmd_SET_RETRACTION)
self.gcode.register_command('GET_RETRACTION', self.cmd_GET_RETRACTION)
self.gcode.register_command('G10', self.cmd_G10)
self.gcode.register_command('G11', self.cmd_G11)
def get_status(self, eventtime):
return {
"retract_length": self.retract_length,
"retract_speed": self.retract_speed,
"unretract_extra_length": self.unretract_extra_length,
"unretract_speed": self.unretract_speed,
"z_hop": self.z_hop
}
def cmd_SET_RETRACTION(self, params):
self.retract_length = self.gcode.get_float(
'RETRACT_LENGTH',
params, self.retract_length, minval=0.)
self.retract_speed = self.gcode.get_float(
'RETRACT_SPEED',
params, self.retract_speed, minval=1)
self.unretract_extra_length = self.gcode.get_float(
'UNRETRACT_EXTRA_LENGTH',
params, self.unretract_extra_length, minval=0.)
self.unretract_speed = self.gcode.get_float(
'UNRETRACT_SPEED',
params, self.unretract_speed, minval=1)
self.z_hop = self.gcode.get_float(
'Z_HOP',
params, self.z_hop, minval=0.)
self.unretract_length = (self.retract_length
+ self.unretract_extra_length)
self.is_retracted = False
def cmd_GET_RETRACTION(self, params):
msg = ("RETRACT_LENGTH=%.5f RETRACT_SPEED=%.5f "
"UNRETRACT_EXTRA_LENGTH=%.5f UNRETRACT_SPEED=%.5f "
"Z_HOP=%.5f"
% (self.retract_length, self.retract_speed,
self.unretract_extra_length, self.unretract_speed,
self.z_hop))
self.gcode.respond_info(msg)
def cmd_G10(self, params):
if not self.is_retracted:
self.gcode.run_script_from_command(
"SAVE_GCODE_STATE NAME=_retract_state\n"
"G92 E0\n"
"G91\n"
"G1 E-%.5f F%d\n"
"G1 Z%.5f\n"
"RESTORE_GCODE_STATE NAME=_retract_state"
% (self.retract_length, self.retract_speed*60, self.z_hop))
self.is_retracted = True
def cmd_G11(self, params):
if self.is_retracted:
self.gcode.run_script_from_command(
"SAVE_GCODE_STATE NAME=_retract_state\n"
"G92 E0\n"
"G91\n"
"G1 E%.5f F%d\n"
"G1 Z-%.5f\n"
"RESTORE_GCODE_STATE NAME=_retract_state"
% (self.unretract_length, self.unretract_speed*60, self.z_hop))
self.is_retracted = False
def load_config(config):
return FirmwareRetraction(config)