Hi All
Im currently using TOSSIM. I am interested in getting the mote positions
assigned by TOSSIM so that motes are aware where in virtual space they are
located. For this purpose I started looking in Nido.nc which includes nido.h In
nido.h there is structure called as TOS_state_t which has defined different
values, such as if we want simulation time we can call from our .nc file
tos_state.tos_time. Under this structure there is spatial_model variable too
which i belive is used to assign positions to nodes in simulator (please
correct me)
so i did some changes in nido.h, spatial_model.h and spatial_model.c to get
mote positions
in spatial_model.c i created two methods to access the values as follows
.....
double simple_spatial_get_positionX(short moteID) {
return points[moteID].xCoordinate;
}
double simple_spatial_get_positionY(short moteID) {
return points[moteID].yCoordinate;
}
and under this pointer to function i put reference to above methods
spatial_model* create_simple_spatial_model() {
.....
model->get_positionX = simple_spatial_get_positionX;
model->get_positionY = simple_spatial_get_positionY;
.....
}
furthermore in spatial_model.h I changed spatial_model structure accordingly,
as follows
typedef struct {
.....
double (*get_positionX)(short);
double (*get_positionY)(short);
} spatial_model;
Accordingly, in nido.h I defined following metohds to access the values
provided from spatial_model.c
point3D *pt3D;
double getXCoord()
{
return tos_state.space->get_positionX(tos_state.current_node);
}
double getYCoord()
{
return tos_state.space->get_positionY(tos_state.current_node);
}
Finaly from my .nc file I call these methods
dbg(DBG_USR1,"Xcoord:%d\n",getXCoord());
dbg(DBG_USR1,"Ycoord:%d\n",getYCoord());
So far so good every things work fine complied and running but always im
getting 0 for these values. Any suggestions why?
1) Am i looking to correct files for getting node positions in TOSSIM
2) My way of working around in fine or im doing something wierd :) somewhere
PS: for simulations i m using lossy model
Looking Forward
Regards
Faisal Karim
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