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-rw-r--r--klippy/stepper.py14
1 files changed, 9 insertions, 5 deletions
diff --git a/klippy/stepper.py b/klippy/stepper.py
index 7c0e6935..f5002d96 100644
--- a/klippy/stepper.py
+++ b/klippy/stepper.py
@@ -6,6 +6,7 @@
import math, logging
import homing, pins
+# Code storing the definitions for a stepper motor
class PrinterStepper:
def __init__(self, printer, config):
self.name = config.section
@@ -48,19 +49,23 @@ class PrinterStepper:
self.mcu_enable.set_digital(print_time, enable)
self.need_motor_enable = not enable
+# Support for stepper controlled linear axis with an endstop
class PrinterHomingStepper(PrinterStepper):
def __init__(self, printer, config):
PrinterStepper.__init__(self, printer, config)
-
+ # Endstop and its position
self.mcu_endstop = pins.setup_pin(
printer, 'endstop', config.get('endstop_pin'))
self.mcu_endstop.add_stepper(self.mcu_stepper)
+ self.position_endstop = config.getfloat('position_endstop')
+ # Axis range
self.position_min = config.getfloat('position_min', 0.)
self.position_max = config.getfloat(
'position_max', 0., above=self.position_min)
- self.position_endstop = config.getfloat('position_endstop')
-
+ # Homing mechanics
self.homing_speed = config.getfloat('homing_speed', 5.0, above=0.)
+ self.homing_retract_dist = config.getfloat(
+ 'homing_retract_dist', 5., above=0.)
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
@@ -72,8 +77,7 @@ class PrinterHomingStepper(PrinterStepper):
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.)
+ # Endstop stepper phase position tracking
self.homing_stepper_phases = config.getint(
'homing_stepper_phases', None, minval=0)
endstop_accuracy = config.getfloat(