Added flag for 802.15.4 default channel

os/contiki-default-conf.h

@@ -41,6 +41,16 @@
 #define IEEE802154_CONF_PANID 0xabcd
 #endif /* IEEE802154_CONF_PANID */
 
+/* IEEE802154_CONF_DEFAULT_CHANNEL defines the default channel for IEEE 802.15.4
+ * networks, for MAC layers without a channel selection or channel hopping
+ * mechanism. Current 802.15.4 MAC layers:
+ * - CSMA: uses IEEE802154_CONF_DEFAULT_CHANNEL
+ * - TSCH: uses its own TSCH_DEFAULT_HOPPING_SEQUENCE instead
+ */
+#ifndef IEEE802154_CONF_DEFAULT_CHANNEL
+#define IEEE802154_CONF_DEFAULT_CHANNEL 26
+#endif /* IEEE802154_CONF_DEF_CHANNEL */
+
 /* QUEUEBUF_CONF_NUM specifies the number of queue buffers. Queue
    buffers are used throughout the Contiki netstack but the
    configuration option can be tweaked to save memory. Performance can

os/net/mac/mac.h

@@ -43,6 +43,14 @@
 #include "contiki.h"
 #include "dev/radio.h"
 
+/**
+ *\brief The default channel for IEEE 802.15.4 networks.
+ */
+#ifdef IEEE802154_CONF_DEFAULT_CHANNEL
+#define IEEE802154_DEFAULT_CHANNEL           IEEE802154_CONF_DEFAULT_CHANNEL
+#else /* IEEE802154_CONF_DEFAULT_CHANNEL */
+#define IEEE802154_DEFAULT_CHANNEL           26
+#endif /* IEEE802154_CONF_DEFAULT_CHANNEL */
 
 typedef void (* mac_callback_t)(void *ptr, int status, int transmissions);
 

tools/viewconf.c

@@ -68,10 +68,10 @@
 
 #else /* MAC_CONF_WITH_TSCH */
 
-#ifdef RF_CHANNEL
-##### "RF_CHANNEL": ____________________________ == RF_CHANNEL
+#ifdef IEEE802154_CONF_DEFAULT_CHANNEL
+##### "IEEE802154_CONF_DEFAULT_CHANNEL": _______ == IEEE802154_CONF_DEFAULT_CHANNEL
 #else
-##### "RF_CHANNEL": ____________________________ ><
+##### "IEEE802154_CONF_DEFAULT_CHANNEL": _______ -> IEEE802154_DEFAULT_CHANNEL
 #endif
 
 #endif /*MAC_CONF_WITH_TSCH */