Rover: log power status on Pixhawk

APMrover2/GCS_Mavlink.pde

@@ -517,6 +517,8 @@ static bool mavlink_try_send_message(mavlink_channel_t chan, enum ap_message id,
     case MSG_EXTENDED_STATUS1:
         CHECK_PAYLOAD_SIZE(SYS_STATUS);
         send_extended_status1(chan, packet_drops);
+        CHECK_PAYLOAD_SIZE(POWER_STATUS);
+        gcs[chan-MAVLINK_COMM_0].send_power_status();
         break;
 
     case MSG_EXTENDED_STATUS2:

APMrover2/Log.pde

@@ -454,6 +454,9 @@ static void Log_Write_Current()
         current_total           : battery.current_total_mah()
     };
     DataFlash.WriteBlock(&pkt, sizeof(pkt));
+
+    // also write power status
+    DataFlash.Log_Write_Power();
 }
 
 struct PACKED log_Compass {