Hardware/software radio HAL patch from Roger Larsson.

Use CHANNEL_802_15_4 define for RF channel on all AVR platforms, default 26.
Remove hopefully unnecessary interrupt disable wrapper on eeprom reads and writes.

platform/avr-zigbit/contiki-avr-zigbit-main.c

@@ -122,15 +122,17 @@ init_lowlevel(void)
 
   rimeaddr_t addr;
   memset(&addr, 0, sizeof(rimeaddr_t));
-  AVR_ENTER_CRITICAL_REGION();
   eeprom_read_block ((void *)&addr.u8,  &mac_address, 8);
-  AVR_LEAVE_CRITICAL_REGION();
  
 #if UIP_CONF_IPV6
   memcpy(&uip_lladdr.addr, &addr.u8, 8);
 #endif  
   rf230_set_pan_addr(IEEE802154_PANID, 0, (uint8_t *)&addr.u8);
-  rf230_set_channel(24);
+#ifdef CHANNEL_802_15_4
+  rf230_set_channel(CHANNEL_802_15_4);
+#else
+  rf230_set_channel(26);
+#endif
 
   rimeaddr_set_node_addr(&addr); 
 

platform/avr-zigbit/contiki-conf.h

@@ -43,7 +43,6 @@
 #define __CONTIKI_CONF_H__
 
 /* MCU and clock rate */
-#define MCU_MHZ 8
 #define PLATFORM PLATFORM_AVR
 #define HARWARE_REVISION ZIGBIT
 
@@ -97,6 +96,7 @@
 #define NETSTACK_CONF_RDC         sicslowmac_driver
 #define NETSTACK_CONF_FRAMER      framer_802154
 #define NETSTACK_CONF_RADIO       rf230_driver
+#define CHANNEL_802_15_4          26
 #define RF230_CONF_AUTOACK        1
 #define RF230_CONF_AUTORETRIES    2
 #define SICSLOWPAN_CONF_FRAG      1