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authorKevin O'Connor <kevin@koconnor.net>2016-11-19 11:34:42 -0500
committerKevin O'Connor <kevin@koconnor.net>2016-11-19 11:34:42 -0500
commit1e1364c3d4bc09f39f64f7ac49bf9d51de9694fc (patch)
tree4b838b410ca61f4961f13cde25e6f0ed8fa5acbe /klippy/extruder.py
parent7cf914537b34b1ecdd51fceefb8f89790cc0bb8d (diff)
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mcu: Store the stepper position in the mcu_stepper class
Move the storage of the stepper location from the kinematic classes to the low-level mcu_stepper class. Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Diffstat (limited to 'klippy/extruder.py')
-rw-r--r--klippy/extruder.py10
1 files changed, 2 insertions, 8 deletions
diff --git a/klippy/extruder.py b/klippy/extruder.py
index 823ed599..0ca57eba 100644
--- a/klippy/extruder.py
+++ b/klippy/extruder.py
@@ -12,7 +12,6 @@ class PrinterExtruder:
self.stepper = stepper.PrinterStepper(printer, config, 'extruder')
self.pressure_advance = config.getfloat('pressure_advance', 0.)
self.need_motor_enable = True
- self.stepper_pos = 0
self.extrude_pos = 0.
def build_config(self):
self.heater.build_config()
@@ -95,12 +94,12 @@ class PrinterExtruder:
decel_d -= extra_decel_d
# Prepare for steps
- stepper_pos = self.stepper_pos
inv_step_dist = self.stepper.inv_step_dist
step_dist = self.stepper.step_dist
mcu_stepper = self.stepper.mcu_stepper
mcu_time = mcu_stepper.print_to_mcu_time(move_time)
- step_offset = stepper_pos - start_pos * inv_step_dist
+ step_pos = mcu_stepper.commanded_position
+ step_offset = step_pos - start_pos * inv_step_dist
# Acceleration steps
accel_multiplier = 2.0 * step_dist * inv_accel
@@ -112,7 +111,6 @@ class PrinterExtruder:
count = mcu_stepper.step_sqrt(
mcu_time - accel_time_offset, accel_steps, step_offset
, accel_sqrt_offset, accel_multiplier)
- stepper_pos += count
step_offset += count - accel_steps
mcu_time += accel_t
# Cruising steps
@@ -122,7 +120,6 @@ class PrinterExtruder:
cruise_steps = cruise_d * inv_step_dist
count = mcu_stepper.step_factor(
mcu_time, cruise_steps, step_offset, cruise_multiplier)
- stepper_pos += count
step_offset += count - cruise_steps
mcu_time += cruise_t
# Deceleration steps
@@ -134,7 +131,6 @@ class PrinterExtruder:
count = mcu_stepper.step_sqrt(
mcu_time + decel_time_offset, decel_steps, step_offset
, decel_sqrt_offset, -accel_multiplier)
- stepper_pos += count
step_offset += count - decel_steps
mcu_time += decel_t
# Retraction steps
@@ -146,7 +142,5 @@ class PrinterExtruder:
count = mcu_stepper.step_sqrt(
mcu_time - accel_time_offset, accel_steps, step_offset
, accel_sqrt_offset, accel_multiplier)
- stepper_pos += count
- self.stepper_pos = stepper_pos
self.extrude_pos = start_pos + accel_d + cruise_d + decel_d - retract_d