deac/osd-contiki
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

Added radio signal strength simulation

Browse source
This commit is contained in:
adamdunkels 2006-10-06 08:25:30 +00:00
parent d2172da359
commit 0e8cdd9e8e
10 changed files with 167 additions and 58 deletions
Download patch file Download diff file Expand all files Collapse all files

21
platform/netsim/ether.c
View file

@ -30,7 +30,7 @@
*
* Author: Adam Dunkels <adam@sics.se>
*
* $Id: ether.c,v 1.2 2006/09/26 22:10:12 adamdunkels Exp $
* $Id: ether.c,v 1.3 2006/10/06 08:25:30 adamdunkels Exp $
*/
/**
* \file
@ -59,6 +59,8 @@
#include "lib/list.h"
#include "nodes.h"
#include "dev/radio-sensor.h"
#include "sensor.h"
#include "node.h"
@ -91,6 +93,7 @@ struct ether_hdr {
int type;
struct sensor_data sensor_data;
clock_time_t clock;
int signal;
int srcx, srcy;
int srcpid;
int srcid;
@ -102,6 +105,7 @@ struct ether_hdr {
static int strength;
static int collisions = 1;
static int num_collisions = 0;
/*-----------------------------------------------------------------------------------*/
void
@ -193,7 +197,7 @@ ether_client_poll(void)
FD_SET(sc, &fdset);
tv.tv_sec = 0;
tv.tv_usec = 1000;
tv.tv_usec = 5000;
ret = select(sc + 1, &fdset, NULL, NULL, &tv);
@ -209,6 +213,7 @@ ether_client_poll(void)
len = ret;
memcpy(uip_buf, &rxbuffer[sizeof(struct ether_hdr)], len);
radio_sensor_signal = hdr->signal;
if(hdr->type == PTYPE_DATA && hdr->srcid != node.id) {
return len - sizeof(struct ether_hdr);
@ -240,7 +245,7 @@ ether_server_poll(void)
tv.tv_sec = 0;
tv.tv_usec = 4000;
tv.tv_usec = 100;
do {
@ -348,6 +353,9 @@ ether_tick(void)
(p->y - y) * (p->y - y) <=
ether_strength() * ether_strength()) {
hdr->signal = ether_strength() * ether_strength() -
(p->x - x) * (p->x - x) -
(p->y - y) * (p->y - y);
/* This packet was sent in the reception range of this node,
so we check against all other packets to see if there is
more than one packet sent towards this node. If so, we have
@ -367,6 +375,11 @@ ether_tick(void)
}
}
}
if(interference) {
num_collisions++;
/* printf("Collisions %d\n", num_collisions);*/
}
if(!interference) {
/* printf("ether: delivering packet from %d to %d\n",
@ -476,7 +489,7 @@ ether_send_sensor_data(struct sensor_data *d, int srcx, int srcy, int strength)
int i;
struct ether_hdr hdr;
printf("Sensor data at (%d, %d)\n", srcx, srcy);
/* printf("Sensor data at (%d, %d)\n", srcx, srcy);*/
for(i = 0; i < nodes_num(); ++i) {