autotest: add trivial test for BodyFrameOdom

Tools/autotest/arducopter.py

@@ -2505,6 +2505,65 @@ class AutoTestCopter(AutoTest):
         if ex is not None:
             raise ex
 
+    def fly_body_frame_odom(self):
+        """Disable GPS navigation, enable input of VISION_POSITION_DELTA."""
+
+        if self.get_parameter("AHRS_EKF_TYPE") != 3:
+            # only tested on this EKF
+            return
+
+        self.customise_SITL_commandline(["--uartF=sim:vicon:"])
+
+        if self.current_onboard_log_contains_message("XKFD"):
+            raise NotAchievedException("Found unexpected XKFD message")
+
+        # scribble down a location we can set origin to:
+        self.progress("Waiting for location")
+        self.change_mode('LOITER')
+        self.wait_ready_to_arm()
+
+        old_pos = self.mav.recv_match(type='GLOBAL_POSITION_INT', blocking=True)
+        print("old_pos=%s" % str(old_pos))
+
+        # configure EKF to use external nav instead of GPS
+        self.set_parameters({
+            "EK3_SRC1_POSXY": 6,
+            "EK3_SRC1_VELXY": 6,
+            "EK3_SRC1_POSZ": 6,
+            "EK3_SRC1_VELZ": 6,
+            "GPS_TYPE": 0,
+            "VISO_TYPE": 1,
+            "SERIAL5_PROTOCOL": 1,
+            "SIM_VICON_TMASK": 8,  # send VISION_POSITION_DELTA
+        })
+        self.reboot_sitl()
+        # without a GPS or some sort of external prompting, AP
+        # doesn't send system_time messages.  So prompt it:
+        self.mav.mav.system_time_send(int(time.time() * 1000000), 0)
+        self.progress("Waiting for non-zero-lat")
+        tstart = self.get_sim_time()
+        while True:
+            self.mav.mav.set_gps_global_origin_send(1,
+                                                    old_pos.lat,
+                                                    old_pos.lon,
+                                                    old_pos.alt)
+            gpi = self.mav.recv_match(type='GLOBAL_POSITION_INT',
+                                      blocking=True)
+            self.progress("gpi=%s" % str(gpi))
+            if gpi.lat != 0:
+                break
+
+            if self.get_sim_time_cached() - tstart > 60:
+                raise AutoTestTimeoutException("Did not get non-zero lat")
+
+        self.takeoff(alt_min=5, mode='ALT_HOLD', require_absolute=False, takeoff_throttle=1800)
+        self.change_mode('LAND')
+        # TODO: something more elaborate here - EKF will only aid
+        # relative position
+        self.wait_disarmed()
+        if not self.current_onboard_log_contains_message("XKFD"):
+            raise NotAchievedException("Did not find expected XKFD message")
+
     def fly_gps_vicon_switching(self):
         """Fly GPS and Vicon switching test"""
         self.customise_SITL_commandline(["--uartF=sim:vicon:"])
@@ -7009,6 +7068,10 @@ class AutoTestCopter(AutoTest):
              "Fly Vision Position",
              self.fly_vision_position), # 24s
 
+            ("BodyFrameOdom",
+             "Fly Body Frame Odometry Code",
+             self.fly_body_frame_odom), # 24s
+
             ("GPSViconSwitching",
              "Fly GPS and Vicon Switching",
              self.fly_gps_vicon_switching),