ARTIQ/Python-subset-for-kernels.md

@@ -76,6 +76,7 @@ Please take into account the following important notes:
         finally:
             # Now we have slack to perform this operation
             self.led.pulse(50 * us)
+            self.core.wait_until_mu(now_mu)
             # After the finally clause, the exception will be raised again
 
     @kernel
@@ -92,6 +93,10 @@ Please take into account the following important notes:
         finally:
             # Guarantee that the LED will be turned off
             self.led.off()
+            # Note that the off() call is not protected from underflows
+            # Note that without wait_until_mu() we can not guarantee this event is not cancelled
+
+        self.core.wait_until_mu(now_mu)
 
     @kernel
     def example_c(self):
@@ -106,6 +111,7 @@ Please take into account the following important notes:
             self.core.break_realtime()
             # Guarantee that the LED will be turned off, even if turning it off caused the initial exception
             self.led.off()
+            self.core.wait_until_mu(now_mu)
             raise  # Make sure the exception is still raised
 ```