+int8_t
+ao_radio_cmac_send(__xdata void *packet, uint8_t len) __reentrant;
+
+#define AO_RADIO_CMAC_OK 0
+#define AO_RADIO_CMAC_LEN_ERROR -1
+#define AO_RADIO_CMAC_CRC_ERROR -2
+#define AO_RADIO_CMAC_MAC_ERROR -3
+#define AO_RADIO_CMAC_TIMEOUT -4
+
+int8_t
+ao_radio_cmac_recv(__xdata void *packet, uint8_t len, uint16_t timeout) __reentrant;
+