[USRP-users] USRP E100

McKeever, Kenneth R. Kenneth.McKeever at jhuapl.edu
Fri Feb 22 15:35:10 EST 2013


Josh,

The new image didn't seem to fix the problem for me.  benchmark_tx.py
still cut out with synchronization errors after a few seconds.

Any other ideas?  Is there a way for me to revert back to UHD 3.4.X on the
E100 and give that a try?

Thanks,
Ken

On 2/21/13 8:31 PM, "Josh Blum" <josh at ettus.com> wrote:

>
>
>On 02/21/2013 07:59 AM, McKeever, Kenneth R. wrote:
>> Hi Josh,
>> 
>> I replaced the file and the problem still remained.  However, it seemed
>>to
>> take a bit longer before the sequence errors kicked in.
>> 
>
>When we added timed command support to E100 in 3.5.* it put some extra
>routing strain on the GPMC bus, and the FPGA tools weren't told enough
>to get it right.
>
>The image I gave you yesterday was with the second DSP removed and some
>buffering to reduce routing issues.
>
>This image is the full image, but built with additional timing
>constraints. It has so far passed on my unit. I hope it helps you too.
>http://files.ettus.com/binaries/e100-misc/usrp_e100_fpga_v2_timing.bin
>
>This fix should be in the 3.5.2 patch release, and will get distributed
>in opkg as well.
>
>-josh
>
>> Thanks,
>> Ken
>> 
>> On 2/20/13 10:12 PM, "Josh Blum" <josh at ettus.com> wrote:
>> 
>>>
>>>
>>> On 02/20/2013 06:37 AM, Leonardo S. Cardoso wrote:
>>>> Hello all,
>>>>
>>>> I've been having "S" (sequence) problems trying to transmit with my
>>>>USRP
>>>> e100. I've recently updated all of my GNU Radio (3.6.2) and UHD
>>>> (UHD_003.005.000) installation, with no luck...
>>>>
>>>> Looking for info on the web, I've seen this error reported before for
>>>> earlier versions of the UHD driver. I've tried all the versions of the
>>>> UHD
>>>> driver I could find online with no luck. Is there something I'm
>>>>missing?
>>>>
>>>> Can anyone help?
>>>
>>> Sorry guys. Its looks like there is an unconstrained path. Can you try
>>> this fpga image in place of the one on your system in
>>> /usr/share/uhd/images (this is where opkg puts it)
>>>
>>> http://files.ettus.com/binaries/e100-misc/usrp_e100_fpga_v2.bin
>>>
>>> -josh
>>>
>>>>
>>>> Thank you.
>>>>
>>>> Best,
>>>>
>>>> Leonardo S. Cardoso
>>>> leosam at gmail.com
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> USRP-users mailing list
>>>> USRP-users at lists.ettus.com
>>>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>>>>
>> 





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