189 lines
6.3 KiB
C
189 lines
6.3 KiB
C
/*
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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 the Institute 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 THE INSTITUTE 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 THE INSTITUTE 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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*/
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#include "contiki.h"
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#include "contiki-lib.h"
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#include "contiki-net.h"
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#include "board-sensors.h"
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#include "board.h"
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#include <string.h>
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#define DEBUG DEBUG_PRINT
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#include "net/uip-debug.h"
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#define SEND_INTERVAL 25 * CLOCK_SECOND
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/* Seconds during which the system must be in deep sleep.
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* During deep sleep all the OS is frozen. */
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#define SLEEP_INTERVAL_SECONDS 6
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/* System does not go to sleep until AWAKE_INTERVAL is passed.
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* This is done to let IP stack receive Neigbhor Advertisements
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* and eventual response packets from the server. */
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#define AWAKE_INTERVAL 3 * CLOCK_SECOND
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#define MAX_PAYLOAD_LEN 40
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static struct uip_udp_conn *client_conn;
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/*---------------------------------------------------------------------------*/
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PROCESS(udp_client_process, "UDP client process");
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AUTOSTART_PROCESSES(&udp_client_process);
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/*---------------------------------------------------------------------------*/
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static void
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tcpip_handler(void)
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{
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char *str;
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if(uip_newdata()) {
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str = uip_appdata;
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str[uip_datalen()] = '\0';
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printf("Response from the server: '%s'\n", str);
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}
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}
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/*---------------------------------------------------------------------------*/
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static void
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timeout_handler(void)
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{
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static int seq_id;
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char buf[MAX_PAYLOAD_LEN];
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printf("Client sending to: ");
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PRINT6ADDR(&client_conn->ripaddr);
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sprintf(buf, "Hello %d from the client", ++seq_id);
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printf(" (msg: %s)\n", buf);
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#if SEND_TOO_LARGE_PACKET_TO_TEST_FRAGMENTATION
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uip_udp_packet_send(client_conn, buf, UIP_APPDATA_SIZE);
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#else /* SEND_TOO_LARGE_PACKET_TO_TEST_FRAGMENTATION */
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uip_udp_packet_send(client_conn, buf, strlen(buf));
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#endif /* SEND_TOO_LARGE_PACKET_TO_TEST_FRAGMENTATION */
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}
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/*---------------------------------------------------------------------------*/
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static void
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print_local_addresses(void)
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{
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int i;
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uint8_t state;
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PRINTF("Client IPv6 addresses: ");
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for(i = 0; i < UIP_DS6_ADDR_NB; i++) {
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state = uip_ds6_if.addr_list[i].state;
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if(uip_ds6_if.addr_list[i].isused &&
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(state == ADDR_TENTATIVE || state == ADDR_PREFERRED)) {
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PRINT6ADDR(&uip_ds6_if.addr_list[i].ipaddr);
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PRINTF("\n");
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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#if UIP_CONF_ROUTER
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static void
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set_global_address(void)
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{
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uip_ipaddr_t ipaddr;
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uip_ip6addr(&ipaddr, 0xaaaa, 0, 0, 0, 0, 0, 0, 0);
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uip_ds6_set_addr_iid(&ipaddr, &uip_lladdr);
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uip_ds6_addr_add(&ipaddr, 0, ADDR_AUTOCONF);
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}
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#endif /* UIP_CONF_ROUTER */
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/*---------------------------------------------------------------------------*/
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static void
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set_connection_address(uip_ipaddr_t *ipaddr)
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{
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#define _QUOTEME(x) #x
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#define QUOTEME(x) _QUOTEME(x)
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#ifdef UDP_CONNECTION_ADDR
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if(uiplib_ipaddrconv(QUOTEME(UDP_CONNECTION_ADDR), ipaddr) == 0) {
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PRINTF("UDP client failed to parse address '%s'\n", QUOTEME(UDP_CONNECTION_ADDR));
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}
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#elif UIP_CONF_ROUTER
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uip_ip6addr(ipaddr,0xaaaa,0,0,0,0x0280,0xe102,0x0000,0x008a);
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#else
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uip_ip6addr(ipaddr,0xfe80,0,0,0,0x0280,0xe102,0x0000,0x008a);
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#endif /* UDP_CONNECTION_ADDR */
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(udp_client_process, ev, data)
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{
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static struct etimer et, wake_timer, periodic_timer;
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uip_ipaddr_t ipaddr;
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PROCESS_BEGIN();
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PRINTF("UDP client process started\n");
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#if UIP_CONF_ROUTER
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set_global_address();
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#endif
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print_local_addresses();
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set_connection_address(&ipaddr);
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/* new connection with remote host */
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client_conn = udp_new(&ipaddr, UIP_HTONS(3000), NULL);
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udp_bind(client_conn, UIP_HTONS(3001));
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PRINTF("Created a connection with the server ");
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PRINT6ADDR(&client_conn->ripaddr);
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PRINTF(" local/remote port %u/%u\n",
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UIP_HTONS(client_conn->lport), UIP_HTONS(client_conn->rport));
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etimer_set(&et, CLOCK_SECOND*10);
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PROCESS_WAIT_UNTIL(etimer_expired(&et)); // Wait for DAD and Router Discovery procedure to end.
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etimer_set(&et, SEND_INTERVAL);
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etimer_set(&wake_timer, AWAKE_INTERVAL);
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etimer_set(&periodic_timer, 1);
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while(1) {
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PROCESS_YIELD();
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if(etimer_expired(&wake_timer)){ // if timer hasn't expired do not go in deep sleep, in order to receive a response.
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printf("Sleeping...\r\n");
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halBoardPowerDown();//sensorsPowerDown();
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sleep_seconds(SLEEP_INTERVAL_SECONDS); // Put system in deep sleep mode for a while.
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halBoardPowerUp();//sensorsPowerUp();
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printf("Awake\r\n");
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}
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if(etimer_expired(&et)) {
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timeout_handler();
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etimer_restart(&et);
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etimer_restart(&wake_timer);
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} else if(ev == tcpip_event) {
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tcpip_handler();
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}
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/* Make the process be called almost immediately,
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* so that it can force the system to go into deep sleep. */
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etimer_restart(&periodic_timer);
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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