* Simple JSON parser and generator.

* Simple HTTP webservice with support for both receiving and sending HTTP requests. * json-ws example that optionally push sensor data to COSM over IPv6.
2012-06-02 18:24:29 +02:00 · 2012-06-02 18:24:29 +02:00 · 51b73127e9
commit 51b73127e9
parent f177284a73
19 changed files with 3028 additions and 0 deletions
--- a/examples/ipv6/json-ws/websense-sky.c
+++ b/examples/ipv6/json-ws/websense-sky.c
@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2011-2012, 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.
+ */
+
+/**
+ * \file
+ *         Websense for Sky mote
+ * \author
+ *         Niclas Finne    <nfi@sics.se>
+ *         Joakim Eriksson <joakime@sics.se>
+ *         Joel Hoglund    <joel@sics.se>
+ */
+
+#include "contiki.h"
+#include "dev/leds.h"
+#include "dev/sht11-sensor.h"
+#include "jsontree.h"
+#include "json-ws.h"
+#include <stdio.h>
+
+#define DEBUG 0
+#if DEBUG
+#define PRINTF(...) printf(__VA_ARGS__)
+#else
+#define PRINTF(...)
+#endif
+
+PROCESS(websense_process, "Websense (sky)");
+AUTOSTART_PROCESSES(&websense_process);
+
+/*---------------------------------------------------------------------------*/
+static CC_INLINE int
+get_temp(void)
+{
+  return ((sht11_sensor.value(SHT11_SENSOR_TEMP) / 10) - 396) / 10;
+}
+/*---------------------------------------------------------------------------*/
+static int
+output_temp(struct jsontree_context *path)
+{
+  char buf[5];
+  snprintf(buf, sizeof(buf), "%3d", get_temp());
+  jsontree_write_atom(path, buf);
+  return 0;
+}
+static struct jsontree_callback temp_sensor_callback =
+  JSONTREE_CALLBACK(output_temp, NULL);
+/*---------------------------------------------------------------------------*/
+
+static struct jsontree_string desc = JSONTREE_STRING("Tmote Sky");
+static struct jsontree_string temp_unit = JSONTREE_STRING("Celcius");
+
+JSONTREE_OBJECT(node_tree,
+                JSONTREE_PAIR("node-type", &desc),
+                JSONTREE_PAIR("time", &json_time_callback));
+
+JSONTREE_OBJECT(temp_sensor_tree,
+                JSONTREE_PAIR("unit", &temp_unit),
+                JSONTREE_PAIR("value", &temp_sensor_callback));
+
+JSONTREE_OBJECT(rsc_tree,
+                JSONTREE_PAIR("temperature", &temp_sensor_tree),
+                JSONTREE_PAIR("leds", &json_leds_callback));
+
+/* complete node tree */
+JSONTREE_OBJECT(tree,
+                JSONTREE_PAIR("node", &node_tree),
+                JSONTREE_PAIR("rsc", &rsc_tree),
+                JSONTREE_PAIR("cfg", &json_subscribe_callback));
+
+/*---------------------------------------------------------------------------*/
+/* for cosm plugin */
+#if WITH_COSM
+/* set COSM value callback to be the temp sensor */
+struct jsontree_callback cosm_value_callback =
+  JSONTREE_CALLBACK(output_temp, NULL);
+#endif
+
+PROCESS_THREAD(websense_process, ev, data)
+{
+  static struct etimer timer;
+
+  PROCESS_BEGIN();
+
+  json_ws_init(&tree);
+
+  SENSORS_ACTIVATE(sht11_sensor);
+
+  json_ws_set_callback("rsc");
+
+  while(1) {
+    /* Alive indication with the LED */
+    etimer_set(&timer, CLOCK_SECOND * 5);
+    PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&timer));
+    leds_on(LEDS_RED);
+    etimer_set(&timer, CLOCK_SECOND / 8);
+    PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&timer));
+    leds_off(LEDS_RED);
+  }
+
+  PROCESS_END();
+}
+/*---------------------------------------------------------------------------*/