3diy
/
klipper
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

bltouch: Always make sure to check the endstop at least every 1ms 

Some of the bltouch implementations may only respond to a probe event
with a 5ms pulse.  Make sure to check the signal pin at least every
millisecond to ensure no signal is lost.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2018-12-13 16:45:32 -05:00
parent 79d65d8ead
commit ce064e6e2d
1 changed files with 7 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
klippy/extras/bltouch.py
View File

@ -10,6 +10,7 @@ SIGNAL_PERIOD = 0.025600
MIN_CMD_TIME = 4 * SIGNAL_PERIOD
TEST_TIME = 5 * 60.
ENDSTOP_REST_TIME = .001
ENDSTOP_SAMPLE_TIME = .000015
ENDSTOP_SAMPLE_COUNT = 4
@ -42,7 +43,6 @@ class BLTouchEndstopWrapper:
self.get_mcu = self.mcu_endstop.get_mcu
self.add_stepper = self.mcu_endstop.add_stepper
self.get_steppers = self.mcu_endstop.get_steppers
self.home_start = self.mcu_endstop.home_start
self.home_wait = self.mcu_endstop.home_wait
self.query_endstop = self.mcu_endstop.query_endstop
self.query_endstop_wait = self.mcu_endstop.query_endstop_wait
@ -71,8 +71,8 @@ class BLTouchEndstopWrapper:
# Perform endstop check to verify bltouch reports probe raised
prev_positions = [s.get_commanded_position()
for s in self.mcu_endstop.get_steppers()]
self.mcu_endstop.home_start(
home_time, ENDSTOP_SAMPLE_TIME, ENDSTOP_SAMPLE_COUNT, .001)
self.mcu_endstop.home_start(home_time, ENDSTOP_SAMPLE_TIME,
ENDSTOP_SAMPLE_COUNT, ENDSTOP_REST_TIME)
try:
self.mcu_endstop.home_wait(home_time + MIN_CMD_TIME)
except self.mcu_endstop.TimeoutError as e:
@ -97,6 +97,10 @@ class BLTouchEndstopWrapper:
self.send_cmd(print_time + self.pin_move_time, None)
toolhead.dwell(self.pin_move_time + MIN_CMD_TIME)
self.mcu_endstop.home_finalize()
def home_start(self, print_time, sample_time, sample_count, rest_time):
rest_time = min(rest_time, ENDSTOP_REST_TIME)
self.mcu_endstop.home_start(
print_time, sample_time, sample_count, rest_time)
def get_position_endstop(self):
return self.position_endstop
cmd_BLTOUCH_DEBUG_help = "Send a command to the bltouch for debugging"