Import of files for the Tmote sky platform.

platform/sky/udpsend.c

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+/*
+ * Copyright (c) 2005, 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: udpsend.c,v 1.1 2006/08/02 14:44:46 bg- Exp $
+ */
+
+/* Set the IP destination address to something different from the
+ * broadcast address. Use commas (",") rather than the normal dots
+ * (".") in addresses.
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include "contiki.h"
+#include "net/uip.h"
+
+#include "dev/leds.h"
+#include "dev/light.h"
+
+PROCESS(udpsend_process, "UDP send process");
+
+PROCESS_THREAD(udpsend_process, ev, data)
+{
+  static struct etimer etimer;
+  static struct uip_udp_conn *c;
+
+  PROCESS_EXITHANDLER(goto exit);
+  PROCESS_BEGIN();
+
+  printf("udpsend_process starting\n");
+
+  {
+    uip_ipaddr_t addr;
+    uip_ipaddr(&addr, 255,255,255,255); /* Change address here! */
+    c = udp_new(addr, HTONS(4321), NULL);
+    c->ttl = 1;			/* One hop only. */
+  }
+
+  while(1) {
+    etimer_set(&etimer, CLOCK_SECOND);
+    PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&etimer));
+
+    tcpip_poll_udp(c);
+    PROCESS_WAIT_EVENT_UNTIL(ev == tcpip_event);
+
+    char buf[64];
+    sprintf(buf, "light sensors %d %d", sensors_light1(), sensors_light2());
+    uip_send(buf, strlen(buf) + 1);
+  }
+
+ exit:
+  /* Contiki does automatic garbage collection of uIP state and we
+   * need not worry about that. */
+  printf("udpsend_process exiting\n");
+  PROCESS_END();
+}
+
+/*
+ * Initialize this kernel module.
+ */
+void
+_init(void)
+{
+  process_start(&udpsend_process, NULL);
+}
+
+/*
+ * When this module is unloaded we must clean up!
+ */
+void
+_fini(void)
+{
+  process_exit(&udpsend_process);
+}