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Re: [Discuss-gnuradio] USRP2 MIMO setup problem
From: |
abbasi9999 |
Subject: |
Re: [Discuss-gnuradio] USRP2 MIMO setup problem |
Date: |
Mon, 10 May 2010 02:27:31 -0700 (PDT) |
Hi,
Is there any files for using two usrp2 as a receivers not as transmitters?
thanks
sri ram-2 wrote:
>
> Hi all,
> I am trying to create a two transmitter setup with two USRP2s
> connected
> with the MIMO cable. I use the trunk version of GNURadio (Friday, Jan
> 29,2010) on laptops running Ubuntu 9.04.
>
> From previous emails and looking at the code, the relevant code for two
> transmitter setup seems to be the test_mimo_tx file in usrp2/host/apps. I
> update the firmware of the master USRP2 with mimo_tx.bin as pointed out in
> http://gnuradio.org/redmine/wiki/gnuradio/USRP2UserFAQ.
>
> sudo ./u2_flash_tool --dev=/dev/sdb -t s/w apps/mimo_tx.bin -w
>
> and for the slave USRP2, I use
>
> sudo ./u2_flash_tool --dev=/dev/sdb -t s/w apps/mimo_tx_slave.bin -w
>
> When I invoke the transmission program at the sender laptop using
>
> sudo ./test_mimo_tx -f 2.412G -I a.dat -i 100 -r
>
> I observe the following message:
>
> usrp2::ctor reset_db failed.
>
> The USRP2 freezes after this and the host cannot find it using find_usrps.
> The archives of the mailing list suggest updating the firmware to solve
> this
> issue. But I want to use the MIMO firmware and not the usual txrx.bin.
>
> 1. Is there firmware for the MIMO master and slave, which does not have
> this
> problem?
>
> 2. What modifications need to be incorporated to the current MIMO files to
> fix this problem?
> If there is not a solution already, I am thinking of modifying the
> existing
> MIMO USRP2 related files. Any pointers on what are to be taken care of,
> will
> be very useful.
>
>
> Thanks,
> Sri
>
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>
>
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