add resources-common res-rfchannel

examples/osd/arduino-settingsmanager/sketch.pde

@@ -19,7 +19,7 @@ extern "C" {
 
 #include "lib/settings.h"
 
-extern resource_t res_led, res_battery, res_cputemp;
+extern resource_t res_led, res_battery, res_cputemp, res_rfchannel;
 
 uint8_t led_pin=4;
 uint8_t led_status;
@@ -40,6 +40,7 @@ void setup (void)
     rest_activate_resource (&res_led, "s/led");
     rest_activate_resource (&res_battery, "s/battery");
     rest_activate_resource (&res_cputemp, "s/cputemp");
+    rest_activate_resource (&res_rfchannel, "p/rfchannel");
     #pragma GCC diagnostic pop
     
  //   NETSTACK_MAC.off(1);

examples/osd/resources-common/res-rfchannel.c

@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
+ * 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
+ *      rfchannel resource
+ * \author
+ *      Harald Pichler <harald@the-develop.net>
+ */
+
+#include "contiki.h"
+
+#include <string.h>
+#include "rest-engine.h"
+#include "Arduino.h"
+#include "params.h"
+
+static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
+static void res_post_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
+
+/* A simple getter example. Returns the reading from the sensor with a simple etag */
+RESOURCE(res_rfchannel,
+         "title=\"RF-Channel: , POST/PUT value 11 .. 26\";rt=\"Control\"",
+         res_get_handler,
+         res_post_put_handler,
+         res_post_put_handler,
+         NULL);
+
+static void
+res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
+{
+  unsigned int accept = -1;
+  REST.get_header_accept(request, &accept);
+
+  if(accept == -1 || accept == REST.type.TEXT_PLAIN) {
+    REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
+    snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "%d", params_get_channel());
+
+    REST.set_response_payload(response, buffer, strlen((char *)buffer));
+  } else if(accept == REST.type.APPLICATION_JSON) {
+    REST.set_header_content_type(response, REST.type.APPLICATION_JSON);
+    snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'rfchannel':%d}", params_get_channel());
+
+    REST.set_response_payload(response, buffer, strlen((char *)buffer));
+  } else {
+    REST.set_response_status(response, REST.status.NOT_ACCEPTABLE);
+    const char *msg = "Supporting content-types text/plain and application/json";
+    REST.set_response_payload(response, msg, strlen(msg));
+  }
+}
+
+static void
+res_post_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
+{
+  size_t len = 0;
+  const char *value = NULL;
+  int success = 1;
+
+  if(success && (len = REST.get_post_variable(request, "value", &value))) {
+    set_param(RADIO_PARAM_CHANNEL, atoi(value));
+  } else {
+    success = 0;
+  } if(!success) {
+    REST.set_response_status(response, REST.status.BAD_REQUEST);
+  }
+}