autotest: switch to looking for barometer update string for passthrough test

MAVProxy can fetch parameters using FTP rather than normal param
mechanism.  Currently this does not emit any of our statustext
information - like the text we're looking for in this test

Tools/autotest/common.py

@@ -5165,15 +5165,29 @@ switch value'''
         self.wait_ready_to_arm()
 
         # test we get statustext strings.  This relies on ArduPilot
-        # emitting statustext strings when we fetch parameters.
-        self.mavproxy.send("param fetch\n")
+        # emitting statustext strings when we fetch parameters. (or,
+        # now, an updating-barometer statustext)
         tstart = self.get_sim_time_cached()
         old_data = None
         text = ""
+        sent_request = False
         while True:
             now = self.get_sim_time()
             if now - tstart > 60: # it can take a *long* time to get these messages down!
                 raise NotAchievedException("Did not get statustext in time")
+            if now - tstart > 30 and not sent_request:
+                # have to wait this long or our message gets squelched....
+                sent_request = True
+#                                self.mavproxy.send("param fetch\n")
+                self.run_cmd(mavutil.mavlink.MAV_CMD_PREFLIGHT_CALIBRATION,
+                             0, #p1
+                             0, #p2
+                             1, #p3, baro
+                             0, #p4
+                             0, #p5
+                             0, #p6
+                             0, #p7
+                )
             frsky.update()
             data = frsky.get_data(0x5000) # no timestamping on this data, so we can't catch legitimate repeats.
             if data is None:
@@ -5195,7 +5209,9 @@ switch value'''
                 if (x & 0x7f) == 0x00:
                     last = True
             if last:
-                m = re.match("Ardu(Plane|Copter|Rover|Tracker|Sub) V[345]", text)
+                # we used to do a 'param fetch' and expect this back, but the params-via-ftp thing broke it.
+#                m = re.match("Ardu(Plane|Copter|Rover|Tracker|Sub) V[345]", text)
+                m = re.match("Updating barometer calibration", text)
                 if m is not None:
                     want_sev = mavutil.mavlink.MAV_SEVERITY_INFO
                     if severity != want_sev: