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RE: [Discuss-gnuradio] Question about benchmark_tx


From: Newman, Timothy
Subject: RE: [Discuss-gnuradio] Question about benchmark_tx
Date: Sun, 23 Nov 2008 15:38:27 -0500

The USRP sink is basically the gnuradio device driver for the USRP.  Look at 
the USRP library code to see how it actually sends the raw data.  It accesses 
the USRP through the USRP device filesystem.  It's not simply just writing 
something to /dev/usrp..

Tim


-----Original Message-----
From: address@hidden on behalf of Mir Ali
Sent: Sun 11/23/2008 2:34 PM
To: Tom Rondeau
Cc: address@hidden
Subject: Re: [Discuss-gnuradio] Question about benchmark_tx
 
Thanks Tom, but I wanted a more specific answer. I know that it writes to
the USRP sink through tranmit_path.py. I want to know how is this sink
referenced as. Is it a device file with a name such as /dev/... etc or is it
referenced as something else. I looked at the whole code and also the
programs that are referred to in the code but didn't find a clear answer.
When we call send_pkt() function where is the payload written to (of course
USRP_Sink) but what is it in terms of a file path.

I hope I put my question in clear words. If I am wrong or misunderstood
something then please correct me.

Thanks again to all and to Tom
Bye
Ali

On Sun, Nov 23, 2008 at 8:34 AM, Tom Rondeau <address@hidden> wrote:

> Mir Ali wrote:
>
>> Hi,
>>
>> Can someone tell me to which device file is the data written to in
>> benchmark_tx.
>>
>> Thanks
>> Ali
>>
>
> The benchmark_tx writes data to the USRP sink through transmit_path.py.
>
> Tom
>
>


-- 
Mir Murtuza Ali
Graduate Student
Center for Wireless Communications
University of Mississippi
University, MS 38677





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