236 lines
7.1 KiB
C
236 lines
7.1 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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/**
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* \file
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* Implementation of OMA LWM2M / IPSO Light Control for LEDs
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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 "lwm2m-object.h"
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#include "lwm2m-engine.h"
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#include "er-coap-engine.h"
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#include "dev/leds.h"
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#include <stdint.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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#if LEDS_ALL & LEDS_BLUE || LEDS_ALL & LEDS_RED || LEDS_ALL & LEDS_BLUE
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#define LEDS_CONTROL_NUMBER (((LEDS_ALL & LEDS_BLUE) ? 1 : 0) + ((LEDS_ALL & LEDS_RED) ? 1 : 0) + ((LEDS_ALL & LEDS_GREEN) ? 1 : 0))
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#else
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#define LEDS_CONTROL_NUMBER 1
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#endif
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struct led_state {
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unsigned long last_on_time;
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uint32_t total_on_time;
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uint8_t is_on;
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uint8_t led_value;
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};
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static struct led_state states[LEDS_CONTROL_NUMBER];
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static lwm2m_instance_t leds_control_instances[LEDS_CONTROL_NUMBER];
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/*---------------------------------------------------------------------------*/
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static int
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read_state(lwm2m_context_t *ctx, uint8_t *outbuf, size_t outsize)
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{
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uint8_t idx = ctx->object_instance_index;
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if(idx >= LEDS_CONTROL_NUMBER) {
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return 0;
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}
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return ctx->writer->write_boolean(ctx, outbuf, outsize,
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states[idx].is_on ? 1 : 0);
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}
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/*---------------------------------------------------------------------------*/
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static int
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write_state(lwm2m_context_t *ctx, const uint8_t *inbuf, size_t insize,
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uint8_t *outbuf, size_t outsize)
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{
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int value;
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size_t len;
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uint8_t idx = ctx->object_instance_index;
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if(idx >= LEDS_CONTROL_NUMBER) {
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return 0;
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}
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len = ctx->reader->read_boolean(ctx, inbuf, insize, &value);
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if(len > 0) {
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if(value) {
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if(!states[idx].is_on) {
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states[idx].is_on = 1;
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states[idx].last_on_time = clock_seconds();
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#if PLATFORM_HAS_LEDS
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leds_on(states[idx].led_value);
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#endif /* PLATFORM_HAS_LEDS */
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}
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} else if(states[idx].is_on) {
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states[idx].total_on_time += clock_seconds() - states[idx].last_on_time;
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states[idx].is_on = 0;
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#if PLATFORM_HAS_LEDS
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leds_off(states[idx].led_value);
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#endif /* PLATFORM_HAS_LEDS */
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}
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} else {
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PRINTF("IPSO leds control - ignored illegal write to on/off\n");
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}
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return len;
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}
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/*---------------------------------------------------------------------------*/
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static char *
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get_color(int value) {
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switch(value) {
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case LEDS_GREEN:
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return "Green";
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case LEDS_RED:
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return "Red";
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case LEDS_BLUE:
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return "Blue";
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}
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return "None";
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}
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static int
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read_color(lwm2m_context_t *ctx, uint8_t *outbuf, size_t outsize)
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{
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char *value;
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uint8_t idx = ctx->object_instance_index;
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if(idx >= LEDS_CONTROL_NUMBER) {
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return 0;
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}
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value = get_color(states[idx].led_value);
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return ctx->writer->write_string(ctx, outbuf, outsize,
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value, strlen(value));
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}
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/*---------------------------------------------------------------------------*/
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static int
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read_on_time(lwm2m_context_t *ctx, uint8_t *outbuf, size_t outsize)
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{
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unsigned long now;
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uint8_t idx = ctx->object_instance_index;
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if(idx >= LEDS_CONTROL_NUMBER) {
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return 0;
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}
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if(states[idx].is_on) {
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/* Update the on time */
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now = clock_seconds();
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states[idx].total_on_time += now - states[idx].last_on_time;
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states[idx].last_on_time = now;
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}
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return ctx->writer->write_int(ctx, outbuf, outsize,
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(int32_t)states[idx].total_on_time);
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}
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/*---------------------------------------------------------------------------*/
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static int
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write_on_time(lwm2m_context_t *ctx,
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const uint8_t *inbuf, size_t insize,
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uint8_t *outbuf, size_t outsize)
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{
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int32_t value;
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size_t len;
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uint8_t idx = ctx->object_instance_index;
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if(idx >= LEDS_CONTROL_NUMBER) {
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return 0;
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}
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len = ctx->reader->read_int(ctx, inbuf, insize, &value);
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if(len > 0 && value == 0) {
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PRINTF("IPSO leds control - reset On Time\n");
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states[idx].total_on_time = 0;
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if(states[idx].is_on) {
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states[idx].last_on_time = clock_seconds();
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}
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} else {
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PRINTF("IPSO leds control - ignored illegal write to On Time\n");
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}
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return len;
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}
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/*---------------------------------------------------------------------------*/
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LWM2M_RESOURCES(leds_control_resources,
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LWM2M_RESOURCE_CALLBACK(5850, { read_state, write_state, NULL }),
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LWM2M_RESOURCE_CALLBACK(5706, { read_color, NULL, NULL }),
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LWM2M_RESOURCE_CALLBACK(5852, { read_on_time, write_on_time, NULL })
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);
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LWM2M_OBJECT(leds_control, 3311, leds_control_instances);
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/*---------------------------------------------------------------------------*/
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static int
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bit_no(int bit)
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{
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int i;
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for(i = 0; i < 8; i++) {
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if(LEDS_ALL & (1 << i)) {
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if(bit == 0) {
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/* matching bit */
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return 1 << i;
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} else {
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/* matching but used */
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bit--;
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}
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}
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}
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return 0;
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}
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void
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ipso_leds_control_init(void)
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{
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lwm2m_instance_t template = LWM2M_INSTANCE(0, leds_control_resources);
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int i;
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/* Initialize the instances */
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for(i = 0; i < LEDS_CONTROL_NUMBER; i++) {
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leds_control_instances[i] = template;
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leds_control_instances[i].id = i;
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states[i].led_value = bit_no(i);
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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_register_object(&leds_control);
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PRINTF("IPSO leds control initialized with %u instances\n",
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LEDS_CONTROL_NUMBER);
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}
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/*---------------------------------------------------------------------------*/
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/** @} */
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