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bltouch: Retry reset/pin_up if the raise probe attempt fails 

There's no harm in retrying the attempt if it appears to have failed
for some reason.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2019-01-29 12:09:58 -05:00
parent 04c6e1f646
commit a5d3d161d3
1 changed files with 20 additions and 8 deletions
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28
klippy/extras/bltouch.py
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@ -10,6 +10,7 @@ SIGNAL_PERIOD = 0.025600
MIN_CMD_TIME = 4 * SIGNAL_PERIOD
TEST_TIME = 5 * 60.
RETRY_RESET_TIME = 1.
ENDSTOP_REST_TIME = .001
ENDSTOP_SAMPLE_TIME = .000015
ENDSTOP_SAMPLE_COUNT = 4
@ -65,7 +66,6 @@ class BLTouchEndstopWrapper:
for stepper in kin.get_steppers('Z'):
stepper.add_to_endstop(self)
def handle_connect(self):
self.sync_mcu_print_time()
try:
self.raise_probe()
except homing.EndstopError as e:
@ -103,12 +103,25 @@ class BLTouchEndstopWrapper:
for s, pos in zip(self.mcu_endstop.get_steppers(), prev_positions):
s.set_commanded_position(pos)
def raise_probe(self):
self.send_cmd('reset')
check_start_time = self.send_cmd('pin_up', duration=self.pin_move_time)
check_end_time = self.send_cmd(None)
if self.pin_up_not_triggered:
self.verify_state(check_start_time, check_end_time,
False, "raise probe")
for retry in range(3):
self.sync_mcu_print_time()
self.send_cmd('reset')
check_start_time = self.send_cmd('pin_up',
duration=self.pin_move_time)
check_end_time = self.send_cmd(None)
if self.pin_up_not_triggered:
try:
self.verify_state(check_start_time, check_end_time,
False, "raise probe")
except homing.EndstopError as e:
if retry >= 2:
raise
msg = "Failed to verify BLTouch probe is raised; retrying."
logging.warning(msg)
self.gcode.respond_info(msg)
self.next_cmd_time += RETRY_RESET_TIME
continue
break
def test_sensor(self):
if not self.pin_up_touch_triggered:
# Nothing to test
@ -138,7 +151,6 @@ class BLTouchEndstopWrapper:
self.start_mcu_pos = [(s, s.get_mcu_position())
for s in self.mcu_endstop.get_steppers()]
def home_finalize(self):
self.sync_mcu_print_time()
self.raise_probe()
self.sync_print_time()
# Verify the probe actually deployed during the attempt