implemented checking for late sensor packets
diff --git a/aos/common/sensors/sensors.h b/aos/common/sensors/sensors.h
index 6d533b4..11cf105 100644
--- a/aos/common/sensors/sensors.h
+++ b/aos/common/sensors/sensors.h
@@ -34,6 +34,7 @@
 // convenience.
 extern const time::Time kSensorSendFrequency;
 using ::aos::control_loops::kLoopFrequency;
+using ::aos::control_loops::NextLoopTime;
 
 // This is the struct that actually gets sent over the UDP socket.
 template<class Values>
@@ -45,6 +46,9 @@
   void NetworkToHost() {
     count = ntoh(count);
   }
+  void HostToNetwork() {
+    count = hton(count);
+  }
 } __attribute__((packed));
 
 }  // namespace sensors