verify_heater: Don't report a heater error if printer is shutdown

Don't log a heater verification error if that error is due to the
printer being shutdown for some other reason.  Those spurious error
reports can be confusing.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

1 files changed, 6 insertions, 1 deletions

diff --git a/klippy/extras/verify_heater.py b/klippy/extras/verify_heater.py
index ba7add6c..7ac4d920 100644
--- a/klippy/extras/verify_heater.py
+++ b/klippy/extras/verify_heater.py
@@ -26,6 +26,7 @@ class HeaterCheck:
         self.met_target = False
         self.last_target = self.goal_temp = self.error = 0.
         self.fault_systime = self.printer.get_reactor().NEVER
+        self.check_timer = None
     def printer_state(self, state):
         if state == 'connect':
             if self.printer.get_start_args().get('debugoutput') is not None:
@@ -35,7 +36,11 @@ class HeaterCheck:
             self.heater = pheater.lookup_heater(self.heater_name)
             logging.info("Starting heater checks for %s", self.heater_name)
             reactor = self.printer.get_reactor()
-            reactor.register_timer(self.check_event, reactor.NOW)
+            self.check_timer = reactor.register_timer(self.check_event,
+                                                      reactor.NOW)
+        elif state == 'shutdown' and self.check_timer is not None:
+            reactor = self.printer.get_reactor()
+            reactor.update_timer(self.check_timer, reactor.NEVER)
     def check_event(self, eventtime):
         temp, target = self.heater.get_temp(eventtime)
         if temp >= target - self.hysteresis: