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Re: [Discuss-gnuradio] Need help in emergency for the fpga image

From: Gabriel Morel
Subject: Re: [Discuss-gnuradio] Need help in emergency for the fpga image
Date: Wed, 05 Jan 2011 14:41:32 -0500

----- Original Message ----- From: "Matthias Wilhelm" <address@hidden>
To: "Gabriel Morel" <address@hidden>
Cc: <address@hidden>
Sent: Wednesday, January 05, 2011 4:41 AM
Subject: Re: [Discuss-gnuradio] Need help in emergency for the fpga image

Hello Gabriel,

there are many possible reasons why it wouldn't work, but in my experience it is most likely an issue with your SD card.

- Did you put both the firmware and the FPGA bitstream on the SD card? Do they have matching versions?

Yes, fpga u2_rev3-20100603.bin firmware txrx_wbx_raw_eth_20100608.bin. This works but if I replace the u2_rev3-20100603.bin by my u2_rev3.bin, nothing work.

- What SD card are you using? SDHC cards do not work, and the USRP2 seems to like 2GB cards (only?). When in doubt, use the SD card provided with the USRP2.

SD card only since the USRP2 doesn't support SDHC (I used the one that came with the USRP2)

- Did you write the images directly to the beginning of the card without filesystem. You have to use /dev/sdX or the likes instead of /dev/sdX{1,2,3,4,...}. There are also graphical tools to flash the card somewhere.

I use u2_flash_tool.py that I found on the web site gnuradio.org. The exact code line is u2_flash_tool.py --dev=/dev/sdb -t fpga /path/to/my/bin/file/u2_rev3.bin -w for the FPGA code
u2_flash_tool.py --dev=/dev/sdb -t s/w /path/to/my/bin/file/txrx_wbx_raw_eth_20100608.bin -w for the firmware code. (I used a WBX daughter board)
   Can you provide me the graphical tools to flash my SD card ?

There is also some info here if you haven't found it yet:

The second LED lights up when the firmware has successfully initialized the lowest level the device (before the ethernet handlers), so without it you will definitely not be able to find the USRP2. The first one just shows that it is powered up.


Am 04.01.2011 um 19:29 schrieb Gabriel Morel:

Hello everyone, I must find a way to compile the FPGA project for the USRP2 to continue my Masters. I use ISE 12.1 and the top project u2_rev3 in the repository git://ettus.sourcerepo.com/ettus/fpga.git using all the files in different makefile. The compilation works well and I get the bin file of 842Kb. But during the test, only one of the lights glow and the computer does not see the radio. Is there someone who can reproduce this bug and help me find
an answer?


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