Hi!
On Tue, 3 Mar 2009, Sonia Pardo wrote:
Dear All,
We can't use memcmp because this function only say us if the packet is the
same or not.
We would like to compare bit to bit because I want to rebuild the packet.
For example, we receive three packets from three different motes (But three
motes send the same information). One of them receives Hello. Other mote
receives Hello too, but the third packet receives Mello. This packet has
errors, but if I compare the three packets bit to bit, I can rebuild the
message of the third packet and I can say that the information of this
packet is Hello too.
I need a function which compare bit to bit, because I don't know how can I
do this...and I think that memcmp is not valid for this.
Can anyone help us?
CC2420 and RF230 are packet-based radios so you don't have access to
information about the quality of each bit. CC1000 from mica2 is not
packet-based so what you want should be possible there.
--
Razvan ME
2009/3/2 Janos Sallai <[email protected]>
How about memcmp in string.h? This is standard C.
Janos
On Mon, Mar 2, 2009 at 11:13 AM, Jordi Pérez <[email protected]> wrote:
Dear all,
I have a Base Station which receives the same packet from three different
motes. The packets must be the same, but maybe, one of them could have some
errors. So, I want to make a task which compare bit to bit, or byte to byte,
the three packet received to rebuild a new packet without errors.
How could I do this task? I don't know how to compare bit to bit (or byte to
byte) a received packet. Can you help me please?
Thanks in advanced,
Jordi
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