-unsigned char serial_rx();
-void serial_tx(unsigned char);
-void setbaud(unsigned char);
-void msp430_init_uart();
-void msp430_init_dco();
+#include "gfports.h"
+
+#ifdef telosb
+//TelosB uses second serial port.
+#define serial_tx serial1_tx
+#define serial_rx serial1_rx
+#define setbaud setbaud1
+#define msp430_init_uart msp430_init_uart1
+#else
+//Other targets use first.
+#define serial_tx serial0_tx
+#define serial_rx serial0_rx
+#define setbaud setbaud0
+#define msp430_init_uart msp430_init_uart0
+#endif
+
+unsigned char serial0_rx();
+void serial0_tx(unsigned char);