This looks like a structure assignment which should copy
between two pointers:
nmsg-neighbors = tableOfNeighbors;
but I think it might not work correctly with arrays.
You probably need to do a memcpy() to get the contents
of your table into the message. I'm a little rusty on my C
pointers (too much Java lately) so you may have to fiddle
with *'s and 's to get the two sides to be pointers
to the beginning of each array...as written I think
they should both be pointers, but obviously the compiler
doesn't agree...
MS
Martin Stehlik wrote:
Hello!
In my application, I have defined following structure:
typedef nx_struct neighbors {
nx_uint16_t id; // id of the neighbor
nx_uint8_t rssi; // rssi of the signal received from neighbor
} neighbors_t;
Then, I have following array:
neighbors_t tableOfNeighbors[MAX_NEIGHBORS];
I need to send the array to the PC for analyzing in my Java application.
I would like to send following message using SerialActiveMessageC:
typedef nx_struct neighborsMsg {
neighbors_t neighbors[MAX_NEIGHBORS];
} neighborsMsg_t;
but this assignment did not work:
neighborsMsg_t* nmsg = (neighborsMsg_t*)(call
SerialPacket.getPayload(pkt, sizeof(neighborsMsg_t)));
nmsg-neighbors = tableOfNeighbors;
resulting in:
invalid lvalue in assignment
Could anyone write me what is the best way how we can transfer arrays
from the nodes to the PC? Is it possible to send arrays in messages?
I would really appreciate any answer! I spent time searching google and
mailinglist.
Regards,
Martin
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