[srslte-users] srsLTE on Ettus E310

[Tom Chatt]

I should mention that all the "O" messages occur at the beginning of the
process, and none took place once the program had hung.  I just ran make
test and all tests passed.  Is it possible to run srsLTE with data from a
file, instead of "live" signal data from the USRP?  If so, I could try
recording data from the USRP B200 connected to my PC and play it back on
the E310, to try to see if it's a timing issue or some other kind of bug.

When you say that the pos=1545 indicates that synchronization is correct -
are you referring to PSS / SSS sync?

On Wed, Apr 1, 2015 at 4:07 AM, Ismael Gomez <
ismael.gomez at softwareradiosystems.com> wrote:

> So you said that exactly the same software version and with the same
> program arguments runs fine in a desktop PC but not in the E310. That must
> be some timing issue or a bug that is only seen with the ARM compiler (e.g.
> uninitialized variable).
>
> The "O" messages indicate timing issues, but they don't seem to be a
> problem if there are only 4 in 10 minutes and the pos=1545 is always the
> same. That indicates that synchronization is correct.
>
> Can you run make test and let me know if all tests are completed
> successfully?
>
> Thanks
>
> On Tue, 31 Mar 2015 at 20:13 Tom Chatt <tom.j.chatt at gmail.com> wrote:
>
>> Apologies if this doesn't show up in the correct thread; I'm new to this listserv and didn't have digest mode disabled, so I didn't have an email to reply to.
>>
>>
>> >Can you check if the pos=1545 is repeated in all messages? If not that
>> >would mean that sync is lost, probably because the ARM9 can not process
>> >fast enough.
>>
>> pos= changes early on, but pos=1545 is repeated in all messages after a short time.
>>
>>
>> >Have you compiled srsLTE in the ARM9 with VOLK support?
>>
>> srsLTE is compiled with Volk support (neon_hardfp_orc)
>>
>> >Also, can you run it without -v and see if you see "O" messages on the
>> >console output? You should see them on the left of the screen.
>>
>> A total of 4 "O" messages showed up after letting it run for ~10 minutes.
>>
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