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From: | Josh Blum |
Subject: | Re: [Discuss-gnuradio] USRP2 unable to receive signal at RX-B |
Date: | Sat, 28 Aug 2010 11:24:01 -0700 |
User-agent: | Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.11) Gecko/20100713 Thunderbird/3.0.6 |
On 08/28/2010 10:38 AM, Cheaw Wen Guey wrote:
Thanks Josh. Found that line of code. Following your advice, I have tried both methods you mentioned and have run into problems for both. For the first one, I have followed the install instructions for microblaze toolkit given on the gnuradio wiki and after setting the path, I tried to configure. usrp2-firwmare failed and the reason that wwas showned was that they failed to detect mb tools.
Try running mb-gcc from the command line first. See if you can do: mb-gcc --help
Once that works, you run the commands (configure.gnu -- not configure -- weird I know...):
cd usrp2/firmware ./bootstrap ./configure.gnu makeSince you are building FPGA images (I assume you have a copy of ISE), then you may just want to use the mb-gcc that comes with Xilinx EDK.
I then tried to install UHD and I managed to copy the firmware and FPGA configuration into the card and I managed to verify by pinging the USRP2.
good
I am however unable to run any of the cpp files even as root as permission is denied.
Why are you trying to execute c++ files? -Josh
I am asking for help if there is anyone who has a modified binary firmware file compiled for the gnuradio version that I can have. I also would like to ask for help to compile a modified FPGA image. ThanksI believe that the gnuradio usrp2 driver defaults to using only RXA for the BasicRX board. This can be changed by modifying this value in firmware for lib/db_basic.c to be "true" for the following line: .base.is_quadrature = false, As an alternative, I recommend trying the UHD: http://ettus-apps.sourcerepo.com/redmine/ettus/projects/uhd/wiki The basic board defaults to using both RXA and RXB, and the selection is software configurable. -Josh On 08/26/2010 03:48 AM, Cheaw Wen Guey wrote:Hi all, I started testing my USRP2 at a lower frequency. I have a function generator generate a 10MHz sine wave on RX-A and RX-B. However, I am unable to see the signal when I run usrp2_fft.py. To confirm, I disconnected the signal from RX-A and still nothing. I can only trace the signal as far as the signal transformer as the ADC is under the Basic-RX board. Is the USRP2 only able to receive on RX-A or is the board defective? Thanks in advance. Cheaw Wen Guey Research Officer_______________________________________________ Discuss-gnuradio mailing list address@hidden http://lists.gnu.org/mailman/listinfo/discuss-gnuradioCheaw Wen Guey Research Officer _______________________________________________ Discuss-gnuradio mailing list address@hidden http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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