+#if AO_SERIAL_SPEED_UBLOX == AO_SERIAL_SPEED_57600
+#define SERIAL_SPEED_STRING "57600"
+#endif
+#if AO_SERIAL_SPEED_UBLOX == AO_SERIAL_SPEED_19200
+#define SERIAL_SPEED_STRING "19200"
+#endif
+#if AO_SERIAL_SPEED_UBLOX == AO_SERIAL_SPEED_9600
+#define SERIAL_SPEED_STRING "9600"
+#endif