Here is an example of importing a topology file from the tutorials:
f = open("15-15-tight-mica2-grid.txt", "r")
lines = f.readlines()
for line in lines:
s = line.split()
if (len(s) > 0):
if (s[0] == "gain"):
r.add(int(s[1]), int(s[2]), float(s[3]))
(http://docs.tinyos.net/index.php/TOSSIM)
Tal
> I understood how to generate the topology file, my doubt now is:
> Which command should I use to input these values?
>
>
> On Fri, Jun 6, 2008 at 11:21 AM, Daniel Pereira <[EMAIL PROTECTED]>
> wrote:
>> I didn't understand how to configure the network topology for TOSSIM.
>> The snippet of Python code create seven nodes.
>> for i in range(0, 7):
>> t.getNode(i).createNoiseModel()
>>
>> How can I relate this nodes with the network topology?
>> Should I set the Channel, Radio and Topology parameters in the Python?
>>
>> Thanks all
>>
>>
>>
>>
>> On Thu, Jun 5, 2008 at 12:14 PM, Tal Rusak <[EMAIL PROTECTED]> wrote:
>>> Hi,
>>> There are two components to the link model in TOSSIM 2.0.2: noise
>>> and
>>> gain. Noise is the external interference and noise from sources other
>>> than the TinyOS network, which gain is the strength at which nodes in
>>> the network can hear packets that other nodes send. The probability
>>> of receiving a packet is given by the signal to noise ratio, which is
>>> gain - noise in the dB scale considered here. This is explained in
>>> http://sing.stanford.edu/pubs/ipsn07-noise.pdf
>>> TOSSIM currently considers that gain is constant per node pair, and
>>> network topologies can be constructed using the tool discussed at
>>> http://www.tinyos.net/tinyos-2.x/doc/html/tutorial/usc-topologies.html
>>> The TOSSIM tutorial shows how to use python to parse this tool's output
>>> and to input the gain values to the simulator. Search for "topo.txt" in
>>> this entry:
>>> http://docs.tinyos.net/index.php/TOSSIM#Configuring_a_Network
>>> Regarding the noise values, you can collect noise samples from your
>>> environment using
>>> tinyos-2.x-contrib/stanford-sing/apps/RssiSample
>>> To create an artificial "low noise" environment, you can create a
>>> text file with very low values. If your values in the noise file are
>>> all at least 14 below the values used for gain, then all packets are
>>> received. Just be sure to have at least 100 entries in the file.
>>>
>>> Thanks,
>>> Tal
>>>
>>>> Hello
>>>>
>>>> How can I use a topology file in TOSSIM
>>>> (http://www.tinyos.net/dist-2.0.0/tinyos-2.x/doc/html/tutorial/usc-topologies.html)
>>>> once I have the .out
>>>> files?
>>>>
>>>> The Tossim wiki show how to integrate a text file noise model like
>>>> heavy-meyer but I didn't find how to use this outpouts.
>>>>
>>>> best regards
>>>>
>>>> _______________________________________________
>>>> Tinyos-help mailing list
>>>> Tinyos-help@millennium.berkeley.edu
>>>> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
>>>>
>>>
>>>
>>> _______________________________________________
>>> Tinyos-help mailing list
>>> Tinyos-help@millennium.berkeley.edu
>>> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
>>>
>>
>
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