+
+//CC2420 signals
+#define SFD (P4IN&BIT1)
+#define FIFOP (P1IN&BIT0)
+#define FIFO (P1IN&BIT3)
+
+//GPIO Expansion Pins
+#define GIO0 (P2OUT&BIT0)
+#define GIO0HIGH P2OUT|=BIT0
+#define GIO0LOW P2OUT&=~BIT0
+#define GIO0OUT P2OUT
+#define GIO0DIR P2DIR
+#define GIO0PIN BIT0
+
+// network byte order converters
+#define htons(x) ((((uint16_t)(x) & 0xFF00) >> 8) | \
+ (((uint16_t)(x) & 0x00FF) << 8))
+#define htonl(x) ((((uint32_t)(x) & 0xFF000000) >> 24) | \
+ (((uint32_t)(x) & 0x00FF0000) >> 8) | \
+ (((uint32_t)(x) & 0x0000FF00) << 8) | \
+ (((uint32_t)(x) & 0x000000FF) << 24))
+
+#define ntohs htons
+#define ntohl htonl
+