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probe: Make sure z is homed before probing 

Warn if the Z axis is not homed before attempting to probe.  This
improves the error message.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2020-09-04 12:39:11 -04:00
parent 08adecd226
commit 3bcb6970f5
1 changed files with 6 additions and 4 deletions
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10
klippy/extras/probe.py
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@ -8,10 +8,9 @@ import pins, homing
from . import manual_probe
HINT_TIMEOUT = """
Make sure to home the printer before probing. If the probe
did not move far enough to trigger, then consider reducing
the Z axis minimum position so the probe can travel further
(the Z minimum position can be negative).
If the probe did not move far enough to trigger, then
consider reducing the Z axis minimum position so the probe
can travel further (the Z minimum position can be negative).
"""
class PrinterProbe:
@ -107,6 +106,9 @@ class PrinterProbe:
return self.x_offset, self.y_offset, self.z_offset
def _probe(self, speed):
toolhead = self.printer.lookup_object('toolhead')
curtime = self.printer.get_reactor().monotonic()
if 'z' not in toolhead.get_status(curtime)['homed_axes']:
raise self.printer.command_error("Must home before probe")
homing_state = homing.Homing(self.printer)
pos = toolhead.get_position()
pos[2] = self.z_position