Merge branch 'fix-ieee802154_kw41z-mac' into 'dev'

fix: kw41z: ieee802154: Use MAC address

See merge request blik/embedded/zephyr!28

drivers/ieee802154/Kconfig.kw41z

@@ -28,6 +28,12 @@ config IEEE802154_KW41Z_INIT_PRIO
 	  Set the initialization priority number. Do not change it unless
 	  you know what you are doing. It has to start before the net stack.
 
+config IEEE802154_KW41Z_MAC_RANDOM
+	bool "Use random MAC address"
+	default y
+	help
+	  Use a random MAC address instead of the built-in unique one
+
 config KW41_DBG_TRACE
 	bool "Enabled simplified debug tracing of events"
 	default n

drivers/ieee802154/ieee802154_kw41z.c

@@ -844,11 +844,22 @@ static inline u8_t *get_mac(struct device *dev)
 	 *       and how to allow for a OUI portion?
 	 */
 
+#if CONFIG_IEEE802154_KW41Z_MAC_RANDOM
 	u32_t *ptr = (u32_t *)(kw41z->mac_addr);
 
 	UNALIGNED_PUT(sys_rand32_get(), ptr);
 	ptr = (u32_t *)(kw41z->mac_addr + 4);
 	UNALIGNED_PUT(sys_rand32_get(), ptr);
+#else
+	const u32_t mac_msb = RSIM->MAC_MSB;
+	const u32_t mac_lsb = RSIM->MAC_LSB;
+	u64_t mac = (u64_t) mac_msb << 32 | mac_lsb;
+
+	/* Does expect big endianess for the mac */
+	mac = sys_cpu_to_be64(mac);
+        memcpy(kw41z->mac_addr, &mac, sizeof(mac));
+
+#endif
 
 	/*
 	 * Clear bit 0 to ensure it isn't a multicast address and set