-#define ao_gps_getchar ao_serial1_getchar
-#define ao_gps_putchar ao_serial1_putchar
-#define ao_gps_set_speed ao_serial1_set_speed
-#define ao_gps_fifo (ao_usart_rx_fifo)
+#define HAS_SERIAL_2 1
+#define SERIAL_2_PA2_PA3 1
+#define USE_SERIAL_2_STDIN 0
+#define USE_SERIAL_2_FLOW 0
+#define USE_SERIAL_2_SW_FLOW 0
+
+#define ao_gps_getchar ao_serial2_getchar
+#define ao_gps_putchar ao_serial2_putchar
+#define ao_gps_set_speed ao_serial2_set_speed