228 lines
7.4 KiB
C
228 lines
7.4 KiB
C
/*
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* Copyright (c) 2015 NXP B.V.
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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 NXP B.V. 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 NXP B.V. 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 NXP B.V. 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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* Author: Theo van Daele <theo.van.daele@nxp.com>
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*
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*/
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#include "contiki.h"
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#include "net/netstack.h"
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#include "net/mac/tsch/tsch.h"
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#include "net/routing/routing.h"
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#include "net/ipv6/uip-debug.h"
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#include "lib/random.h"
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#include "sys/node-id.h"
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#include "waveform.h"
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#include "leds.h"
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#include "net/ipv6/uiplib.h"
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#include "net/ipv6/uip-udp-packet.h"
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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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#define DEBUG DEBUG_PRINT
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#include "net/ipv6/uip-debug.h"
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#define INTERVAL (10)
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#define BLINK_TIME (CLOCK_SECOND/4)
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typedef enum {
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WAVEFORM_SIN = 0,
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WAVEFORM_TRIANGLE = 1,
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WAVEFORM_POS_SAWTOOTH = 2,
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WAVEFORM_NEG_SAWTOOTH = 3,
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NUMBER_OF_WAVEFORMS = 4
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} waveform_t;
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typedef struct {
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const int8 * table;
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char * str;
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} wave_t;
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static const wave_t waveform_table[] = { {sin_table, "SINE"}, /* WAVEFORM_SIN */
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{triangle_table, "TRIANGLE"}, /* WAVEFORM_TRIANGLE */
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{pos_sawtooth_table, "POS-SAWTOOTH"}, /* WAVEFORM_POS_SAWTOOTH */
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{neg_sawtooth_table, "NEG_SAWTOOTH"}}; /* WAVEFORM_NEG_SAWTOOTH */
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static int total_time = 0;
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static int selected_waveform = 0;
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static void udp_rx_handler(void);
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static void my_sprintf(char * udp_buf, int8_t value);
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static struct uip_udp_conn *udp_conn_rx;
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static struct uip_udp_conn *udp_conn_tx;
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static uip_ip6addr_t ip6addr_host;
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static int host_found = 0;
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static char udp_buf[120];
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static char *post_mssg = "Trigger";
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/*******************************************************************************/
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/* Local functions */
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/*******************************************************************************/
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static void
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udp_rx_handler(void)
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{
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if(uip_newdata()) {
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((char *)uip_appdata)[uip_datalen()] = '\0';
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printf("UDP data from host: %s\n", (char *)uip_appdata);
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if (!host_found) {
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/* Create socket to talk back to host */
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uip_ipaddr_copy(&ip6addr_host, &UIP_IP_BUF->srcipaddr);
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udp_conn_tx = udp_new(&ip6addr_host, UIP_HTONS(8186), NULL);
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host_found = 1;
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}
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}
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}
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static void
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my_sprintf(char * udp_buf, int8_t value)
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{
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/* Fill the buffer with 4 ASCII chars */
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if (value < 0) {
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*udp_buf++ = '-';
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} else {
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*udp_buf++ = '+';
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}
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value = abs(value);
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*udp_buf++ = value/100 + '0';
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value %= 100;
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*udp_buf++ = value/10 + '0';
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value %= 10;
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*udp_buf++ = value + '0';
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*udp_buf = 0;
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}
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/*---------------------------------------------------------------------------*/
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PROCESS(node_process, "Node");
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PROCESS(led_process, "LED");
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AUTOSTART_PROCESSES(&node_process);
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(node_process, ev, data)
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{
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PROCESS_BEGIN();
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static int sample_count = 0;
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static struct etimer et;
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extern unsigned char node_mac[8];
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leds_init();
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/* 3 possible roles:
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* - role_6ln: simple node, will join any network, secured or not
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* - role_6dr: DAG root, will advertise (unsecured) beacons
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* - role_6dr_sec: DAG root, will advertise secured beacons
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* */
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static int is_coordinator = 0;
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static enum { role_6ln, role_6dr, role_6dr_sec } node_role;
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/* Set node with ID == 1 as coordinator, handy in Cooja. */
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if(node_id == 1) {
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if(LLSEC802154_ENABLED) {
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node_role = role_6dr_sec;
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} else {
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node_role = role_6dr;
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}
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} else {
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node_role = role_6ln;
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}
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printf("Init: node starting with role %s\n",
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node_role == role_6ln ? "6ln" : (node_role == role_6dr) ? "6dr" : "6dr-sec");
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#if MAC_CONF_WITH_TSCH
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tsch_set_pan_secured(LLSEC802154_ENABLED && (node_role == role_6dr_sec));
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#endif /* MAC_CONF_WITH_TSCH */
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is_coordinator = node_role > role_6ln;
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if(is_coordinator) {
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NETSTACK_ROUTING.root_start();
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}
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NETSTACK_MAC.on();
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/* Selected waveform depends on LS byte of MAC */
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selected_waveform = node_mac[7] % NUMBER_OF_WAVEFORMS;
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printf("LS-Byte=0x%x; waveform=%d\n", node_mac[7], selected_waveform);
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process_start(&led_process, NULL);
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/* Listen to any host on 8185 */
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udp_conn_rx = udp_new(NULL, 0, NULL);
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udp_bind(udp_conn_rx, UIP_HTONS(8185));
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/* Wait for timer event
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On timer event, handle next sample */
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etimer_set(&et, INTERVAL*CLOCK_SECOND);
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while(1) {
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et) || (ev == tcpip_event));
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if (ev == tcpip_event) {
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udp_rx_handler();
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}
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if (etimer_expired(&et) ) {
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/* Restart timer */
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total_time += INTERVAL;
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if (host_found) {
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/* Make sample count dependent on asn. After a disconnect, waveforms remain
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synchronous. Use node_mac to create phase offset between waveforms in different nodes */
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sample_count = ((tsch_current_asn.ls4b/((1000/(tsch_timing_us[tsch_ts_timeslot_length]/1000)))/INTERVAL)+node_mac[7]) % (SIZE_OF_WAVEFORM-1);
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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]);
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my_sprintf(udp_buf, waveform_table[selected_waveform].table[sample_count]);
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uip_udp_packet_send(udp_conn_tx, udp_buf, strlen(udp_buf));
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/* Switch LED on and start blink timer (callback timer) */
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process_post(&led_process, PROCESS_EVENT_CONTINUE, post_mssg);
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} else {
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printf("No host\n");
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}
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etimer_restart(&et);
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}
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(led_process, ev, data)
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{
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PROCESS_BEGIN();
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/* Switch on leds for 0.25msec after event posted. */
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static struct etimer led_et;
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while(1) {
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PROCESS_WAIT_EVENT_UNTIL((ev == PROCESS_EVENT_CONTINUE) && (!strcmp(data, post_mssg)));
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leds_on(LEDS_RED);
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etimer_set(&led_et, CLOCK_SECOND/4);
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&led_et));
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etimer_stop(&led_et);
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leds_off(LEDS_RED);
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}
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PROCESS_END();
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}
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