think adding a no entry conditionally is nicer

selfdrive/car/gm/interface.py

@@ -178,10 +178,12 @@ class CarInterface(CarInterfaceBase):
     if ret.vEgo < self.CP.minSteerSpeed:
       events.add(car.CarEvent.EventName.belowSteerSpeed)
 
-    # handle button presses
     # The ECM will fault if resume triggers an enable while speed is unset (unset is greater than 70 m/s)
-    resume_enabled = c.hudControl.setSpeed < 70
-    events.events.extend(create_button_enable_events(ret.buttonEvents, pcm_cruise=self.CP.pcmCruise, resume_enabled=resume_enabled))
+    if c.hudControl.setSpeed >= 70:
+      events.add(car.CarEvent.EventName.resumeBlocked)
+
+    # handle button presses
+    events.events.extend(create_button_enable_events(ret.buttonEvents, pcm_cruise=self.CP.pcmCruise, resume_enabled=True))
 
     ret.events = events.to_msg()
 

selfdrive/controls/lib/events.py

@@ -635,6 +635,10 @@ EVENTS: Dict[int, Dict[str, Union[Alert, AlertCallbackType]]] = {
     ET.NO_ENTRY: wrong_car_mode_alert,
   },
 
+  EventName.resumeBlocked: {
+    ET.NO_ENTRY: NoEntryAlert("Press Set to Engage"),
+  },
+
   EventName.wrongCruiseMode: {
     ET.USER_DISABLE: EngagementAlert(AudibleAlert.disengage),
     ET.NO_ENTRY: NoEntryAlert("Adaptive Cruise Disabled"),