--- /dev/null
+/*
+ * Copyright © 2012 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#ifndef _AO_RADIO_CMAC_H_
+#define _AO_RADIO_CMAC_H_
+
+#include <ao_aes.h>
+
+#define AO_CMAC_KEY_LEN AO_AES_LEN
+#define AO_CMAC_MAX_LEN (128 - AO_CMAC_KEY_LEN)
+
+extern __pdata int8_t ao_radio_cmac_rssi;
+
+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;
+
+void
+ao_radio_cmac_init(void);
+
+#endif /* _AO_RADIO_CMAC_H_ */