Added example announcement code

doc/examples.txt

@@ -6,6 +6,8 @@
 
 /** \example multi-threading.c */
 
+/** \example example-announcement.c */
+
 /** \example example-broadcast.c */
 /** \example example-collect.c */
 /** \example example-mesh.c */

examples/rime/example-announcement.c

@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2009, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the Contiki operating system.
+ *
+ * $Id: example-announcement.c,v 1.1 2009/03/08 20:27:42 adamdunkels Exp $
+ */
+
+/**
+ * \file
+ *         Example code that uses the annuncement module
+ * \author
+ *         Adam Dunkels <adam@sics.se>
+ */
+
+#include "contiki.h"
+#include "net/rime.h"
+
+#include "net/rime/announcement.h"
+
+#include <stdio.h>
+
+#if CONTIKI_TARGET_NETSIM
+#include "ether.h"
+#endif
+
+/*---------------------------------------------------------------------------*/
+PROCESS(example_announcement_process, "Example announcement process");
+AUTOSTART_PROCESSES(&example_announcement_process);
+/*---------------------------------------------------------------------------*/
+static void
+received_announcement(struct announcement *a, rimeaddr_t *from,
+		      uint16_t id, uint16_t value)
+{
+  /* We set our own announced value to one plus that of our neighbor. */
+  announcement_set_value(a, value + 1);
+
+  printf("Got announcement from %d.%d, id %d, value %d, our new value is %d\n",
+	 from->u8[0], from->u8[1], id, value, value + 1);
+
+#if CONTIKI_TARGET_NETSIM
+  {
+    char buf[8];
+    sprintf(buf, "%d", value + 1);
+    ether_set_text(buf);
+  }
+#endif
+
+}
+static struct announcement example_announcement;
+/*---------------------------------------------------------------------------*/
+PROCESS_THREAD(example_announcement_process, ev, data)
+{
+  PROCESS_EXITHANDLER(announcement_remove(&example_announcement);)
+    
+  PROCESS_BEGIN();
+
+  /* Register an announcement with ID 128 and the lowest eight bytes
+     of the Rime address as the value. We provide the
+     'received_announcement' function pointer so that this function
+     will be called when a announcements from neighbors are heard. */
+  
+  announcement_register(&example_announcement,
+			128,
+			rimeaddr_node_addr.u8[0],
+			received_announcement);
+
+  while(1) {
+    static struct etimer et;
+
+    /* Listen for announcements every ten seconds. */
+    etimer_set(&et, CLOCK_SECOND * 10);
+    PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
+    announcement_listen(1);
+  }
+
+  PROCESS_END();
+}
+/*---------------------------------------------------------------------------*/