Contiki Websense Remote

/* * Copyright (c) 2010, Swedish Institute of Computer Science. * 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. * */ /*---------------------------------------------------------------------------*/ /** * \file * A simple example using HTTP to control and be controlled * \author * Niclas Finne * Joakim Eriksson */ /*---------------------------------------------------------------------------*/ #include "contiki.h" #include "dev/button-sensor.h" #include "dev/leds.h" #include "wget.h" #include "webserver-nogui.h" #include "httpd-simple.h" #include /*---------------------------------------------------------------------------*/ /* The address of the server to register the services for this node */ #define SERVER "aaaa::1" /* This command registers two services (/0 and /1) to turn the leds on or off */ #define REGISTER_COMMAND "/r?p=0&d=Turn%20off%20leds&p=1&d=Turn%20on%20leds" /* The address of the other node to control */ #define OTHER_NODE "aaaa::212:7403:3:303" /* The commands to send to the other node */ #define SET_LEDS_ON "/1" #define SET_LEDS_OFF "/0" /*---------------------------------------------------------------------------*/ PROCESS(websense_remote_process, "Websense Remote"); AUTOSTART_PROCESSES(&websense_remote_process); /*---------------------------------------------------------------------------*/ static const char *TOP = "Contiki Websense Remote\n"; static const char *BOTTOM = "\n"; /*---------------------------------------------------------------------------*/ static PT_THREAD(handle_command(struct httpd_state *s)) { PSOCK_BEGIN(&s->sout); SEND_STRING(&s->sout, TOP); if(s->filename[1] == '0') { /* Turn off leds */ leds_off(LEDS_ALL); SEND_STRING(&s->sout, "Turned off leds!"); } else if(s->filename[1] == '1') { /* Turn on leds */ leds_on(LEDS_ALL); SEND_STRING(&s->sout, "Turned on leds!"); } else { SEND_STRING(&s->sout, "Unknown command"); } SEND_STRING(&s->sout, BOTTOM); PSOCK_END(&s->sout); } /*---------------------------------------------------------------------------*/ httpd_simple_script_t httpd_simple_get_script(const char *name) { return handle_command; } /*---------------------------------------------------------------------------*/ static void wget_done(int status) { switch(status) { case WGET_OK: printf("Command sent.\n"); break; case WGET_TIMEDOUT: printf("Command timedout.\n"); break; case WGET_ABORTED: printf("Connection aborted.\n"); break; case WGET_CONNECT_FAILED: printf("Failed to connect.\n"); break; } } static const struct wget_callbacks callbacks = { NULL, wget_done }; static void send_command(const char *server, const char *command) { int ret; printf("Sending to [%s]: %s\n", server, command); ret = wget_get(server, 80, command, &callbacks); if(ret != WGET_OK) { if(ret == WGET_ALREADY_RUNNING) { printf("Waiting for previous command to finish.\n"); } else { printf("Failed to send command: %u\n", ret); } } } /*---------------------------------------------------------------------------*/ PROCESS_THREAD(websense_remote_process, ev, data) { static int mode; static struct etimer timer; PROCESS_BEGIN(); mode = 0; wget_init(); process_start(&webserver_nogui_process, NULL); SENSORS_ACTIVATE(button_sensor); /* Give the node some time to join the network before registering the available services. */ etimer_set(&timer, CLOCK_SECOND * 30); while(1) { PROCESS_WAIT_EVENT(); if(ev == sensors_event && data == &button_sensor) { /* The button has been pressed. Send command to the other node. */ if(mode) { /* Turn on leds */ send_command(OTHER_NODE, SET_LEDS_OFF); } else { send_command(OTHER_NODE, SET_LEDS_ON); } /* Alternate between the two commands */ mode = !mode; } else if(ev == PROCESS_EVENT_TIMER && etimer_expired(&timer)) { printf("Registering services\n"); send_command(SERVER, REGISTER_COMMAND); } } PROCESS_END(); } /*---------------------------------------------------------------------------*/