osd-contiki/apps/er-coap/er-coap-udp.c
Gaëtan Harter 5640293e8f er-coap: separate the communication layer
This code was copied and adapted from: https://github.com/cetic/6lbr
Licensed under the same license as Contiki.
2017-03-23 15:33:50 +01:00

43 lines
1.2 KiB
C

#include "contiki.h"
#include "contiki-net.h"
#include "er-coap-engine.h"
#include "er-coap-communication.h"
#include <string.h>
#define DEBUG DEBUG_NONE
#include "uip-debug.h"
static struct uip_udp_conn *udp_conn = NULL;
/*-----------------------------------------------------------------------------------*/
void
coap_init_communication_layer(uint16_t port)
{
/* new connection with remote host */
udp_conn = udp_new(NULL, 0, NULL);
udp_bind(udp_conn, port);
PRINTF("Listening on port %u\n", uip_ntohs(udp_conn->lport));
}
/*-----------------------------------------------------------------------------------*/
void
coap_send_message(uip_ipaddr_t *addr, uint16_t port, uint8_t *data, uint16_t length)
{
/* Configure connection to reply to client */
uip_ipaddr_copy(&udp_conn->ripaddr, addr);
udp_conn->rport = port;
uip_udp_packet_send(udp_conn, data, length);
PRINTF("-sent UDP datagram (%u)-\n", length);
/* Restore server connection to allow data from any node */
memset(&udp_conn->ripaddr, 0, sizeof(udp_conn->ripaddr));
udp_conn->rport = 0;
}
/*-----------------------------------------------------------------------------------*/
void
coap_handle_receive()
{
coap_receive();
}