/* * 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 * */ #include "contiki.h" #include "net/netstack.h" #include "net/mac/tsch/tsch.h" #include "net/routing/routing.h" #include "net/ipv6/uip-debug.h" #include "lib/random.h" #include "sys/node-id.h" #include "waveform.h" #include "leds.h" #include "net/ipv6/uiplib.h" #include "net/ipv6/uip-udp-packet.h" #include #include #include #define DEBUG DEBUG_PRINT #include "net/ipv6/uip-debug.h" #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_ENABLED) { 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 MAC_CONF_WITH_TSCH tsch_set_pan_secured(LLSEC802154_ENABLED && (node_role == role_6dr_sec)); #endif /* MAC_CONF_WITH_TSCH */ is_coordinator = node_role > role_6ln; if(is_coordinator) { NETSTACK_ROUTING.root_start(); } NETSTACK_MAC.on(); /* 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 = ((tsch_current_asn.ls4b/((1000/(tsch_timing_us[tsch_ts_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); } } 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(); }