Use the Z1 product ID as MAC/Node ID if no value is found in the XMEM

platform/z1/Makefile.common

@@ -67,6 +67,14 @@ ifeq ($(HOST_OS),Darwin)
       MOTES = $(shell $(MOTELIST) -c 2>&- | \
               cut -f 2 -d ,)
       CMOTES=$(MOTES)
+      REFNUM = $(shell $(MOTELIST) -c 2>&- | \
+               cut -f 1 -d , | tail -c5)
+      ifneq (,$(REFNUM))
+        # No device fo-und
+        ifeq (,$(findstring und, $(REFNUM)))
+          CFLAGS += -DSERIALNUM=$(REFNUM)
+        endif
+      endif
   endif
 else
   # If we are not running under Mac, we assume Linux
@@ -80,6 +88,14 @@ else
               cut -f 2 -d , | \
               perl -ne 'print $$1 . " " if(m-(/dev/\w+)-);')
       CMOTES=$(MOTES)
+      REFNUM = $(shell $(MOTELIST) -c 2>&- | \
+               cut -f 1 -d , | tail -c5 )
+      ifneq (,$(REFNUM))
+        # No device fo-und
+        ifeq (,$(findstring und, $(REFNUM)))
+          CFLAGS += -DSERIALNUM=$(REFNUM)
+        endif
+      endif
     endif
 endif
 

platform/z1/contiki-z1-main.c

@@ -119,7 +119,11 @@ force_float_inclusion()
 }
 #endif
 /*---------------------------------------------------------------------------*/
-void uip_log(char *msg) { puts(msg); }
+void
+uip_log(char *msg)
+{
+  puts(msg);
+}
 /*---------------------------------------------------------------------------*/
 #if 0
 void
@@ -213,9 +217,16 @@ main(int argc, char **argv)
   /* Restore node id if such has been stored in external mem */
   node_id_restore();
 
-  /* If no MAC address was burned, we use the node ID. */
+  /* If no MAC address was burned, we use the node id or the Z1 product ID */
   if(!(node_mac[0] | node_mac[1] | node_mac[2] | node_mac[3] |
        node_mac[4] | node_mac[5] | node_mac[6] | node_mac[7])) {
+
+#ifdef SERIALNUM
+    if(!node_id) {
+      PRINTF("Node id is not set, using Z1 product ID\n");
+      node_id = SERIALNUM;
+    }
+#endif
     node_mac[0] = 0xc1;  /* Hardcoded for Z1 */
     node_mac[1] = 0x0c;  /* Hardcoded for Revision C */
     node_mac[2] = 0x00;  /* Hardcoded to arbitrary even number so that
@@ -286,15 +297,17 @@ main(int argc, char **argv)
 
   leds_off(LEDS_ALL);
 
+#ifdef SERIALNUM
+  PRINTF("Ref ID: %u\n", SERIALNUM);
+#endif
   PRINTF(CONTIKI_VERSION_STRING " started. ");
 
-  if(node_id > 0) {
+  if(node_id) {
     PRINTF("Node id is set to %u.\n", node_id);
   } else {
-    PRINTF("Node id is not set.\n");
+    PRINTF("Node id not set\n");
   }
 
-
 #if WITH_UIP6
   memcpy(&uip_lladdr.addr, node_mac, sizeof(uip_lladdr.addr));
   /* Setup nullmac-like MAC for 802.15.4 */

platform/z1/node-id.c

@@ -42,7 +42,6 @@
 #include "dev/xmem.h"
 #include <string.h>
 
-
 unsigned short node_id = 0;
 unsigned char node_mac[8];
 
@@ -65,11 +64,11 @@ void
 node_id_burn(unsigned short id)
 {
   unsigned char buf[12];
+  memset(buf, 0, sizeof(buf));
   buf[0] = 0xad;
   buf[1] = 0xde;
   buf[2] = id >> 8;
   buf[3] = id & 0xff;
-  memcpy(&buf[4], node_mac, 8);
   xmem_erase(XMEM_ERASE_UNIT_SIZE, NODE_ID_XMEM_OFFSET);
   xmem_pwrite(buf, 12, NODE_ID_XMEM_OFFSET);
 }