Merge pull request contiki-os#1409 from nfi/oma-lwm2m-ipso

Implementation of OMA LWM2M Engine / IPSO Objects

apps/ipso-objects/Makefile.ipso-objects

@@ -0,0 +1,3 @@
+ipso-objects_src = ipso-temperature.c ipso-button.c ipso-leds-control.c \
+	ipso-light-control.c ipso-objects.c
+CFLAGS += -DWITH_IPSO=1

apps/ipso-objects/ipso-button.c

@@ -0,0 +1,163 @@
+/*
+ * Copyright (c) 2015, Yanzi Networks AB.
+ * 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 copyright holder 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 COPYRIGHT HOLDER 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
+ * COPYRIGHT HOLDER 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.
+ */
+
+/**
+ * \addtogroup ipso-objects
+ * @{
+ */
+
+/**
+ * \file
+ *         Implementation of OMA LWM2M / IPSO button as a digital input
+ * \author
+ *         Joakim Eriksson <[email protected]>
+ *         Niclas Finne <[email protected]>
+ */
+
+#include "contiki.h"
+#include "lwm2m-object.h"
+#include "lwm2m-engine.h"
+#include "er-coap-engine.h"
+
+#define DEBUG 0
+#if DEBUG
+#include <stdio.h>
+#define PRINTF(...) printf(__VA_ARGS__)
+#else
+#define PRINTF(...)
+#endif
+
+#if PLATFORM_HAS_BUTTON
+#include "dev/button-sensor.h"
+
+PROCESS(ipso_button_process, "ipso-button");
+#endif /* PLATFORM_HAS_BUTTON */
+
+static int input_state = 0;
+static int polarity = 0;
+static int32_t counter = 0;
+static int32_t edge_selection = 3;
+static int32_t debounce_time = 10;
+/*---------------------------------------------------------------------------*/
+static int
+read_state(lwm2m_context_t *ctx, uint8_t *outbuf, size_t outsize)
+{
+  int value;
+  if(polarity == 0) {
+    value = input_state ? 1 : 0;
+  } else {
+    value = input_state ? 0 : 1;
+  }
+  PRINTF("Read button state (polarity=%d, state=%d): %d\n",
+         polarity, input_state, value);
+  return ctx->writer->write_boolean(ctx, outbuf, outsize, value);
+}
+/*---------------------------------------------------------------------------*/
+static int
+reset_counter(lwm2m_context_t *ctx, const uint8_t *arg, size_t len,
+              uint8_t *outbuf, size_t outlen)
+{
+  counter = 0;
+  return 0;
+}
+/*---------------------------------------------------------------------------*/
+LWM2M_RESOURCES(button_resources,
+                LWM2M_RESOURCE_CALLBACK(5500, { read_state, NULL, NULL }),
+                LWM2M_RESOURCE_INTEGER_VAR(5501, &counter),
+                LWM2M_RESOURCE_BOOLEAN_VAR(5502, &polarity),
+                LWM2M_RESOURCE_INTEGER_VAR(5503, &debounce_time),
+                LWM2M_RESOURCE_INTEGER_VAR(5504, &edge_selection),
+                LWM2M_RESOURCE_CALLBACK(5505, { NULL, NULL, reset_counter }),
+                LWM2M_RESOURCE_STRING(5751, "Button")
+                );
+LWM2M_INSTANCES(button_instances,
+                LWM2M_INSTANCE(0, button_resources));
+LWM2M_OBJECT(button, 3200, button_instances);
+/*---------------------------------------------------------------------------*/
+void
+ipso_button_init(void)
+{
+  /* register this device and its handlers - the handlers automatically
+     sends in the object to handle */
+  lwm2m_engine_register_object(&button);
+
+#if PLATFORM_HAS_BUTTON
+  process_start(&ipso_button_process, NULL);
+#endif /* PLATFORM_HAS_BUTTON */
+}
+/*---------------------------------------------------------------------------*/
+#if PLATFORM_HAS_BUTTON
+PROCESS_THREAD(ipso_button_process, ev, data)
+{
+  static struct etimer timer;
+  int32_t time;
+
+  PROCESS_BEGIN();
+
+  SENSORS_ACTIVATE(button_sensor);
+
+  while(1) {
+    PROCESS_WAIT_EVENT();
+
+    if(ev == sensors_event && data == &button_sensor) {
+      if(!input_state) {
+        input_state = 1;
+        counter++;
+        if((edge_selection & 2) != 0) {
+          lwm2m_object_notify_observers(&button, "/0/5500");
+        }
+        lwm2m_object_notify_observers(&button, "/0/5501");
+
+        time = (debounce_time * CLOCK_SECOND / 1000);
+        if(time < 1) {
+          time = 1;
+        }
+        etimer_set(&timer, (clock_time_t)time);
+      }
+    } else if(ev == PROCESS_EVENT_TIMER && data == &timer) {
+      if(!input_state) {
+        /* Button is not in pressed state */
+      } else if(button_sensor.value(0) != 0) {
+        /* Button is still pressed */
+        etimer_reset(&timer);
+      } else {
+        input_state = 0;
+        if((edge_selection & 1) != 0) {
+          lwm2m_object_notify_observers(&button, "/0/5500");
+        }
+      }
+    }
+  }
+
+  PROCESS_END();
+}
+#endif /* PLATFORM_HAS_BUTTON */
+/*---------------------------------------------------------------------------*/
+/** @} */