From ebbae099cefb82ceab2e268efaa8159b92425be4 Mon Sep 17 00:00:00 2001 From: adamdunkels Date: Tue, 24 Mar 2009 19:45:46 +0000 Subject: [PATCH] A program that displays the number of neighbors on the JCreate LEDs --- examples/jcreate/announce-blink.c | 196 ++++++++++++++++++++++++++++++ 1 file changed, 196 insertions(+) create mode 100644 examples/jcreate/announce-blink.c diff --git a/examples/jcreate/announce-blink.c b/examples/jcreate/announce-blink.c new file mode 100644 index 000000000..e6fb66658 --- /dev/null +++ b/examples/jcreate/announce-blink.c @@ -0,0 +1,196 @@ +/* + * Copyright (c) 2009, 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. + * + * This file is part of the Contiki operating system. + * + * $Id: announce-blink.c,v 1.1 2009/03/24 19:45:46 adamdunkels Exp $ + */ + +/** + * \file + * Example program that displays the number of neighbors on the JCreate LEDs + * \author + * Adam Dunkels + */ + +#include "contiki.h" +#include "contiki-net.h" +#include "shell.h" + +#if CONTIKI_TARGET_SKY +#include "dev/acc-sensor.h" +#include "dev/cc2420.h" +#include "net/mac/xmac.h" +#endif /* CONTIKI_TARGET_SKY */ + +#include + +#define MAX_NEIGHBORS_SEEN 8 +#define NEIGHBOR_TIMEOUT 4 * CLOCK_SECOND + +static struct announcement announcement; + +struct neighbor_entry { + struct neighbor_entry *next; + rimeaddr_t addr; + struct ctimer ctimer; +}; + +LIST(neighbor_table); +MEMB(neighbor_mem, struct neighbor_entry, MAX_NEIGHBORS_SEEN); + +/*---------------------------------------------------------------------------*/ +PROCESS(announce_blink_process, "Annouce blink"); +AUTOSTART_PROCESSES(&announce_blink_process); +/*---------------------------------------------------------------------------*/ +/* + * This function takes the length of the neighbor table list and + * displays it on the on-board LEDs. There is currently no support for + * using 8 LEDs in the standard Contiki LED library, so we directly + * write to the LEDS_PxOUT variable. + */ +static void +show_leds(void) +{ + int val, i; + int num; + + num = list_length(neighbor_table); + + val = 1; + for(i = 0; i < num; ++i) { + val |= (val << 1); + } + val >>= 1; + +#if CONTIKI_TARGET_SKY + LEDS_PxOUT = ~val; +#endif /* CONTIKI_TARGET_SKY */ +} +/*---------------------------------------------------------------------------*/ +static void +remove_neighbor(void *dummy) +{ + struct neighbor_entry *e = dummy; + + list_remove(neighbor_table, e); + memb_free(&neighbor_mem, e); + + show_leds(); + + printf("%d.%d: removed %d.%d\n", + rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1], + e->addr.u8[0], e->addr.u8[1]); +} +/*---------------------------------------------------------------------------*/ +static void +received_announcement(struct announcement *a, rimeaddr_t *from, + uint16_t id, uint16_t value) +{ + struct neighbor_entry *e; + + printf("%d.%d: announcement from neighbor %d.%d, id %d, value %d\n", + rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1], + from->u8[0], from->u8[1], + id, value); + + + for(e = list_head(neighbor_table); e != NULL; e = e->next) { + if(rimeaddr_cmp(from, &e->addr)) { + ctimer_set(&e->ctimer, NEIGHBOR_TIMEOUT, remove_neighbor, e); + show_leds(); + return; + } + } + + + e = memb_alloc(&neighbor_mem); + if(e != NULL) { + rimeaddr_copy(&e->addr, from); + list_add(neighbor_table, e); + ctimer_set(&e->ctimer, NEIGHBOR_TIMEOUT, remove_neighbor, e); + } else { + } + show_leds(); +} +/*---------------------------------------------------------------------------*/ +PROCESS_THREAD(announce_blink_process, ev, data) +{ + PROCESS_BEGIN(); + + /* XXX the Sentilla JCreate has 8 LEDs, and we need to set the ports + correctly. */ +#if CONTIKI_TARGET_SKY + LEDS_PxDIR = 0xff; + LEDS_PxOUT = 0xff; +#endif /* CONTIKI_TARGET_SKY */ + + announcement_register(&announcement, 80, 0, + received_announcement); + + list_init(neighbor_table); + memb_init(&neighbor_mem); + +#if CONTIKI_TARGET_NATIVE + { + int i; + for(i = 0; i < 10; ++i) { + rimeaddr_t r; + r.u8[0] = r.u8[1] = i; + received_announcement(NULL, &r, 0, 0); + received_announcement(NULL, &r, 0, 0); + } + } +#endif /* CONTIKI_TARGET_NATIVE */ + +#if CONTIKI_TARGET_SKY + acc_sensor.activate(); + + /* Lower the transmission power for the announcements so that only + close-range neighbors are noticed. (Makes for a nicer visual + effect.) */ + xmac_set_announcement_radio_txpower(1); +#endif /* CONTIKI_TARGET_SKY */ + + while(1) { + static struct etimer e; + static uint16_t last_value; + + etimer_set(&e, CLOCK_SECOND / 8); + PROCESS_WAIT_EVENT(); +#if CONTIKI_TARGET_SKY + if(acc_sensor.value(1) / 256 != last_value) { + last_value = acc_sensor.value(1) / 256; + announcement_listen(1); + } +#endif /* CONTIKI_TARGET_SKY */ + } + + PROCESS_END(); +} +/*---------------------------------------------------------------------------*/