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stepper: Use a sane default for homing_positive_dir

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Use the endstop position to determine a sane default for
homing_positive_dir.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2017-07-24 14:12:17 -04:00
parent 143b7cccf4
commit 981c53682f
9 changed files with 46 additions and 42 deletions
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13
klippy/stepper.py
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@ -57,8 +57,17 @@ class PrinterHomingStepper(PrinterStepper):
self.position_endstop = config.getfloat('position_endstop')
self.homing_speed = config.getfloat('homing_speed', 5.0, above=0.)
self.homing_positive_dir = config.getboolean(
'homing_positive_dir', False)
self.homing_positive_dir = config.getboolean('homing_positive_dir', None)
if self.homing_positive_dir is None:
axis_len = self.position_max - self.position_min
if self.position_endstop <= self.position_min + axis_len / 4.:
self.homing_positive_dir = False
elif self.position_endstop >= self.position_max - axis_len / 4.:
self.homing_positive_dir = True
else:
raise config.error(
"Unable to infer homing_positive_dir in section '%s'" % (
config.section,))
self.homing_retract_dist = config.getfloat(
'homing_retract_dist', 5., above=0.)
self.homing_stepper_phases = config.getint(