219 lines
6.7 KiB
C
219 lines
6.7 KiB
C
/*
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* Copyright (c) 2015, Yanzi Networks AB.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \addtogroup ipso-objects
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* @{
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*/
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/**
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* \file
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* Implementation of OMA LWM2M / IPSO button as a digital input
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* NOTE: only works with a Contiki Button Sensor (not for Standalone)
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* \author
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* Joakim Eriksson <joakime@sics.se>
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* Niclas Finne <nfi@sics.se>
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*/
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#include "contiki.h"
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#include "lwm2m-object.h"
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#include "lwm2m-engine.h"
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#define DEBUG 0
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#if DEBUG
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#include <stdio.h>
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#define PRINTF(...) printf(__VA_ARGS__)
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#else
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#define PRINTF(...)
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#endif
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#define IPSO_INPUT_STATE 5500
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#define IPSO_INPUT_COUNTER 5501
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#define IPSO_INPUT_DEBOUNCE 5503
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#define IPSO_INPUT_EDGE_SEL 5504
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#define IPSO_INPUT_CTR_RESET 5505
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#define IPSO_INPUT_SENSOR_TYPE 5751
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#if PLATFORM_HAS_BUTTON
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#if PLATFORM_SUPPORTS_BUTTON_HAL
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#include "dev/button-hal.h"
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#else
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#include "dev/button-sensor.h"
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#define IPSO_BUTTON_SENSOR button_sensor
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static struct etimer timer;
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#endif
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PROCESS(ipso_button_process, "ipso-button");
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#endif /* PLATFORM_HAS_BUTTON */
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static lwm2m_status_t lwm2m_callback(lwm2m_object_instance_t *object,
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lwm2m_context_t *ctx);
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static int input_state = 0;
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static int32_t counter = 0;
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static int32_t edge_selection = 3; /* both */
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static int32_t debounce_time = 10;
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static const lwm2m_resource_id_t resources[] = {
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RO(IPSO_INPUT_STATE), RO(IPSO_INPUT_COUNTER),
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RW(IPSO_INPUT_DEBOUNCE), RW(IPSO_INPUT_EDGE_SEL), EX(IPSO_INPUT_CTR_RESET),
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RO(IPSO_INPUT_SENSOR_TYPE)
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};
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/* Only support for one button for now */
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static lwm2m_object_instance_t reg_object = {
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.object_id = 3200,
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.instance_id = 0,
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.resource_ids = resources,
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.resource_count = sizeof(resources) / sizeof(lwm2m_resource_id_t),
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.callback = lwm2m_callback,
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};
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/*---------------------------------------------------------------------------*/
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static int
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read_state(void)
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{
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PRINTF("Read button state: %d\n", input_state);
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return input_state;
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}
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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static lwm2m_status_t
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lwm2m_callback(lwm2m_object_instance_t *object,
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lwm2m_context_t *ctx)
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{
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if(ctx->operation == LWM2M_OP_READ) {
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switch(ctx->resource_id) {
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case IPSO_INPUT_STATE:
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lwm2m_object_write_int(ctx, read_state());
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break;
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case IPSO_INPUT_COUNTER:
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lwm2m_object_write_int(ctx, counter);
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break;
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case IPSO_INPUT_DEBOUNCE:
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lwm2m_object_write_int(ctx, debounce_time);
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break;
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case IPSO_INPUT_EDGE_SEL:
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lwm2m_object_write_int(ctx, edge_selection);
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break;
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case IPSO_INPUT_SENSOR_TYPE:
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lwm2m_object_write_string(ctx, "button", strlen("button"));
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break;
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default:
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return LWM2M_STATUS_ERROR;
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}
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} else if(ctx->operation == LWM2M_OP_EXECUTE) {
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if(ctx->resource_id == IPSO_INPUT_CTR_RESET) {
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counter = 0;
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} else {
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return LWM2M_STATUS_ERROR;
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}
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}
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return LWM2M_STATUS_OK;
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}
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/*---------------------------------------------------------------------------*/
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void
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ipso_button_init(void)
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{
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/* register this device and its handlers - the handlers automatically
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sends in the object to handle */
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lwm2m_engine_add_object(®_object);
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#if PLATFORM_HAS_BUTTON
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process_start(&ipso_button_process, NULL);
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#endif /* PLATFORM_HAS_BUTTON */
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}
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/*---------------------------------------------------------------------------*/
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#if PLATFORM_HAS_BUTTON
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PROCESS_THREAD(ipso_button_process, ev, data)
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{
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PROCESS_BEGIN();
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#if !PLATFORM_SUPPORTS_BUTTON_HAL
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SENSORS_ACTIVATE(IPSO_BUTTON_SENSOR);
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#endif
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while(1) {
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PROCESS_WAIT_EVENT();
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#if PLATFORM_SUPPORTS_BUTTON_HAL
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if(ev == button_hal_press_event) {
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input_state = 1;
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counter++;
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if((edge_selection & 2) != 0) {
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lwm2m_notify_object_observers(®_object, IPSO_INPUT_STATE);
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}
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lwm2m_notify_object_observers(®_object, IPSO_INPUT_COUNTER);
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} else if(ev == button_hal_release_event) {
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input_state = 0;
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if((edge_selection & 1) != 0) {
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lwm2m_notify_object_observers(®_object, IPSO_INPUT_STATE);
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}
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}
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#else /* PLATFORM_SUPPORTS_BUTTON_HAL */
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if(ev == sensors_event && data == &IPSO_BUTTON_SENSOR) {
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if(!input_state) {
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int32_t time;
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input_state = 1;
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counter++;
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if((edge_selection & 2) != 0) {
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lwm2m_notify_object_observers(®_object, IPSO_INPUT_STATE);
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}
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lwm2m_notify_object_observers(®_object, IPSO_INPUT_COUNTER);
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time = (debounce_time * CLOCK_SECOND / 1000);
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if(time < 1) {
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time = 1;
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}
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etimer_set(&timer, (clock_time_t)time);
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}
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} else if(ev == PROCESS_EVENT_TIMER && data == &timer) {
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if(!input_state) {
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/* Button is not in pressed state */
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} else if(IPSO_BUTTON_SENSOR.value(0) != 0) {
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/* Button is still pressed */
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etimer_reset(&timer);
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} else {
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input_state = 0;
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if((edge_selection & 1) != 0) {
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lwm2m_notify_object_observers(®_object, IPSO_INPUT_STATE);
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}
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}
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}
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#endif /* PLATFORM_SUPPORTS_BUTTON_HAL */
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}
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PROCESS_END();
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}
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#endif /* PLATFORM_HAS_BUTTON */
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/*---------------------------------------------------------------------------*/
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/** @} */
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