231 lines
6.6 KiB
C
231 lines
6.6 KiB
C
/*
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* Copyright (c) 2015, Ralf Schlatterbeck Open Source Consulting
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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 Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR 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, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*/
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/**
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* \file
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* Potentiometer for regulating LED-strip brightness per color
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* \author
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* Ralf Schlatterbeck <rsc@runtux.com>
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include "contiki.h"
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#include "contiki-net.h"
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#include "rest-engine.h"
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#include "er-coap-engine.h"
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#include "uiplib.h"
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#include "generic_resource.h"
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#include "Arduino.h"
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/*
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* Resources to be activated need to be imported through the extern keyword.
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* The build system automatically compiles the resources in the
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* corresponding sub-directory.
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*/
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#if PLATFORM_HAS_BATTERY
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#include "dev/battery-sensor.h"
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extern resource_t res_battery;
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#endif
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#if PLATFORM_HAS_RADIO
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#include "dev/radio-sensor.h"
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extern resource_t res_radio;
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#endif
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#define REMOTE_PORT UIP_HTONS(COAP_DEFAULT_PORT)
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// should be the same :-)
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#define UIP_NTOHS(x) UIP_HTONS(x)
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#define SERVER_NODE(ip) \
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uip_ip6addr(ip,0xfe80,0,0,0,0x0221,0x2eff,0xff00,0x665a)
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/*uip_ip6addr(ip,0x2001,0xdb8,0xc001,0xf00d,0x22e,0xffff,0x34,0xa600)*/
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#define LOOP_INTERVAL (2 * CLOCK_SECOND)
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uip_ipaddr_t server_ipaddr, tmp_addr;
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char server_resource [20] = "s/led";
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int interval = 2; /* Retransmit interval after no change in value */
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uint8_t led_pin=4;
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uint8_t led_status;
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static size_t
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ip_to_string (const char *name, const char *uri, char *buf, size_t bsize)
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{
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#define IP(x) UIP_NTOHS(server_ipaddr.u16[x])
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return snprintf
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( buf, bsize, "%x:%x:%x:%x:%x:%x:%x:%x"
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, IP(0), IP(1), IP(2), IP(3), IP(4), IP(5), IP(6), IP(7)
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);
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}
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int ip_from_string (const char *name, const char *uri, const char *s)
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{
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/* Returns 1 if successful, only copy valid address */
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if (uiplib_ip6addrconv (s, &tmp_addr)) {
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uip_ip6addr_copy (&server_ipaddr, &tmp_addr);
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return 0;
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}
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return -1;
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}
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GENERIC_RESOURCE
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( server_ip
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, ip
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, ipv6_address
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, 1
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, ip_from_string
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, ip_to_string
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);
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static size_t
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resource_to_string (const char *name, const char *uri, char *buf, size_t bsize)
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{
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return snprintf (buf, bsize, "%s", server_resource);
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}
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int resource_from_string (const char *name, const char *uri, const char *s)
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{
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strncpy (server_resource, s, sizeof (server_resource));
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server_resource [sizeof (server_resource) - 1] = 0;
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return 0;
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}
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GENERIC_RESOURCE
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( server_resource
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, led-resource
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, resource-name
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, 1
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, resource_from_string
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, resource_to_string
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);
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static size_t
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interval_to_string (const char *name, const char *uri, char *buf, size_t bsize)
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{
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return snprintf (buf, bsize, "%d", interval);
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}
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int interval_from_string (const char *name, const char *uri, const char *s)
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{
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interval = atoi (s);
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return 0;
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}
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GENERIC_RESOURCE
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( interval
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, interval
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, s
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, 0
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, interval_from_string
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, interval_to_string
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);
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/* Passed to COAP_BLOCKING_REQUEST to handle responses */
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void chunk_handler (void *response)
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{
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const uint8_t *chunk;
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int len = coap_get_payload (response, &chunk);
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printf ("|%.*s", len, (char *)chunk);
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}
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PROCESS(poti, "Potentiometer");
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AUTOSTART_PROCESSES(&poti);
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PROCESS_THREAD(poti, ev, data)
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{
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static struct etimer loop_timer;
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PROCESS_BEGIN();
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/* Initialize the REST engine. */
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rest_init_engine ();
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SERVER_NODE (&server_ipaddr);
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// switch off the led
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pinMode(led_pin, OUTPUT);
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digitalWrite(led_pin, HIGH);
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led_status=0;
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/* Activate the application-specific resources. */
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#if PLATFORM_HAS_BATTERY
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SENSORS_ACTIVATE(battery_sensor);
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rest_activate_resource (&res_battery, "s/battery");
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#endif
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rest_activate_resource (&res_server_ip, "poti/ip");
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rest_activate_resource (&res_server_resource, "poti/resource");
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rest_activate_resource (&res_interval, "poti/interval");
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etimer_set (&loop_timer, LOOP_INTERVAL);
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/* Define application-specific events here. */
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while(1) {
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static coap_packet_t request [1]; /* Array: treat as pointer */
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static uint8_t val = 0;
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PROCESS_WAIT_EVENT();
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if (etimer_expired (&loop_timer)) {
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if (1) {
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char buf [9];
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coap_transaction_t *transaction;
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if(val==0){
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sprintf (buf, "mode=%s", "on");
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val=1;
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digitalWrite(led_pin, LOW);
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led_status=1;
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}else{
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sprintf (buf, "mode=%s", "off");
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val=0;
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digitalWrite(led_pin, HIGH);
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led_status=0;
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}
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printf ("%s\n", buf);
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coap_init_message (request, COAP_TYPE_NON, COAP_PUT, 0);
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coap_set_header_uri_path (request, server_resource);
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coap_set_header_content_format (request, REST.type.TEXT_PLAIN);
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coap_set_payload (request, buf, strlen (buf));
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request->mid = coap_get_mid ();
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transaction = coap_new_transaction
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(request->mid, &server_ipaddr, REMOTE_PORT);
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transaction->packet_len = coap_serialize_message
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(request, transaction->packet);
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coap_send_transaction (transaction);
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}
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etimer_reset (&loop_timer);
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}
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} /* while (1) */
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PROCESS_END();
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}
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