/*
* Copyright (c) 2015 NXP B.V.
* 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 NXP B.V. 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 NXP B.V. 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 NXP B.V. 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.
*
* Author: Theo van Daele <theo.van.daele@nxp.com>
*
*/
#include "contiki-conf.h"
#include "net/netstack.h"
#include "net/mac/tsch/tsch-schedule.h"
#include "net/mac/tsch/tsch.h"
#include "net/mac/tsch/tsch-private.h"
#include "net/rpl/rpl-private.h"
#include "net/mac/tsch/tsch-schedule.h"
#include "net/ip/uip-debug.h"
#include "lib/random.h"
#include "rpl-tools.h"
#include "node-id.h"
#include "waveform.h"
#include "leds.h"
#include "net/ip/uiplib.h"
#include "net/ip/uip-udp-packet.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define DEBUG DEBUG_PRINT
#include "net/ip/uip-debug.h"
#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
#define INTERVAL (10)
#define BLINK_TIME (CLOCK_SECOND/4)
typedef enum {
WAVEFORM_SIN = 0,
WAVEFORM_TRIANGLE = 1,
WAVEFORM_POS_SAWTOOTH = 2,
WAVEFORM_NEG_SAWTOOTH = 3,
NUMBER_OF_WAVEFORMS = 4
} waveform_t;
typedef struct {
const int8 * table;
char * str;
} wave_t;
static const wave_t waveform_table[] = { {sin_table, "SINE"}, /* WAVEFORM_SIN */
{triangle_table, "TRIANGLE"}, /* WAVEFORM_TRIANGLE */
{pos_sawtooth_table, "POS-SAWTOOTH"}, /* WAVEFORM_POS_SAWTOOTH */
{neg_sawtooth_table, "NEG_SAWTOOTH"}}; /* WAVEFORM_NEG_SAWTOOTH */
static int total_time = 0;
static int selected_waveform = 0;
static void udp_rx_handler(void);
static void my_sprintf(char * udp_buf, int8_t value);
static struct uip_udp_conn *udp_conn_rx;
static struct uip_udp_conn *udp_conn_tx;
static uip_ip6addr_t ip6addr_host;
static int host_found = 0;
static char udp_buf[120];
static char *post_mssg = "Trigger";
/*******************************************************************************/
/* Local functions */
/*******************************************************************************/
static void
udp_rx_handler(void)
{
if(uip_newdata()) {
((char *)uip_appdata)[uip_datalen()] = '\0';
printf("UDP data from host: %s\n", (char *)uip_appdata);
if (!host_found) {
/* Create socket to talk back to host */
uip_ipaddr_copy(&ip6addr_host, &UIP_IP_BUF->srcipaddr);
udp_conn_tx = udp_new(&ip6addr_host, UIP_HTONS(8186), NULL);
host_found = 1;
}
}
}
static void
my_sprintf(char * udp_buf, int8_t value)
{
/* Fill the buffer with 4 ASCII chars */
if (value < 0) {
*udp_buf++ = '-';
} else {
*udp_buf++ = '+';
}
value = abs(value);
*udp_buf++ = value/100 + '0';
value %= 100;
*udp_buf++ = value/10 + '0';
value %= 10;
*udp_buf++ = value + '0';
*udp_buf = 0;
}
/*---------------------------------------------------------------------------*/
PROCESS(node_process, "Node");
PROCESS(led_process, "LED");
AUTOSTART_PROCESSES(&node_process);
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(node_process, ev, data)
{
PROCESS_BEGIN();
static int sample_count = 0;
static struct etimer et;
extern unsigned char node_mac[8];
leds_init();
/* 3 possible roles:
* - role_6ln: simple node, will join any network, secured or not
* - role_6dr: DAG root, will advertise (unsecured) beacons
* - role_6dr_sec: DAG root, will advertise secured beacons
* */
static int is_coordinator = 0;
static enum { role_6ln, role_6dr, role_6dr_sec } node_role;
/* Set node with ID == 1 as coordinator, handy in Cooja. */
if(node_id == 1) {
if(LLSEC802154_CONF_SECURITY_LEVEL) {
node_role = role_6dr_sec;
} else {
node_role = role_6dr;
}
} else {
node_role = role_6ln;
}
printf("Init: node starting with role %s\n",
node_role == role_6ln ? "6ln" : (node_role == role_6dr) ? "6dr" : "6dr-sec");
#if WITH_TSCH
tsch_set_pan_secured(LLSEC802154_CONF_SECURITY_LEVEL && (node_role == role_6dr_sec));
#endif /* WITH_TSCH */
is_coordinator = node_role > role_6ln;
if(is_coordinator) {
uip_ipaddr_t prefix;
uip_ip6addr(&prefix, 0xbbbb, 0, 0, 0, 0, 0, 0, 0);
rpl_tools_init(&prefix);
} else {
rpl_tools_init(NULL);
}
/* Selected waveform depends on LS byte of MAC */
selected_waveform = node_mac[7] % NUMBER_OF_WAVEFORMS;
printf("LS-Byte=0x%x; waveform=%d\n", node_mac[7], selected_waveform);
process_start(&led_process, NULL);
/* Listen to any host on 8185 */
udp_conn_rx = udp_new(NULL, 0, NULL);
udp_bind(udp_conn_rx, UIP_HTONS(8185));
/* Wait for timer event
On timer event, handle next sample */
etimer_set(&et, INTERVAL*CLOCK_SECOND);
while(1) {
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et) || (ev == tcpip_event));
if (ev == tcpip_event) {
udp_rx_handler();
}
if (etimer_expired(&et) ) {
/* Restart timer */
total_time += INTERVAL;
if (host_found) {
/* Make sample count dependent on asn. After a disconnect, waveforms remain
synchronous. Use node_mac to create phase offset between waveforms in different nodes */
sample_count = ((current_asn.ls4b/((1000/(TSCH_CONF_DEFAULT_TIMESLOT_LENGTH/1000)))/INTERVAL)+node_mac[7]) % (SIZE_OF_WAVEFORM-1);
printf("%d sec. waveform=%s. cnt=%d. value=%d\n", total_time, waveform_table[selected_waveform].str, sample_count, waveform_table[selected_waveform].table[sample_count]);
my_sprintf(udp_buf, waveform_table[selected_waveform].table[sample_count]);
uip_udp_packet_send(udp_conn_tx, udp_buf, strlen(udp_buf));
/* Switch LED on and start blink timer (callback timer) */
process_post(&led_process, PROCESS_EVENT_CONTINUE, post_mssg);
} else {
printf("No host\n");
}
etimer_restart(&et);
if (total_time%60 == 0) {
/* Print network status once per minute */
print_network_status();
}
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(led_process, ev, data)
{
PROCESS_BEGIN();
/* Switch on leds for 0.25msec after event posted. */
static struct etimer led_et;
while(1) {
PROCESS_WAIT_EVENT_UNTIL((ev == PROCESS_EVENT_CONTINUE) && (!strcmp(data, post_mssg)));
leds_on(LEDS_RED);
etimer_set(&led_et, CLOCK_SECOND/4);
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&led_et));
etimer_stop(&led_et);
leds_off(LEDS_RED);
}
PROCESS_END();
}