On 06/07/2019 12:29 PM, Mark Koenig via USRP-users wrote:
I am using a thunderbolt 3 interface, but only using it at 1Gig,
standard 1500 MTU. I am running at a sample rate of 25Msps.
If the problem is less-prevalent at lower sample rates, that suggests
that your interface is dropping packets.
Keep mind that 1 Gig interface can support 25Msps at the absolute
maximum at standard sample sizes. So, you're
right on the edge, and if the host interface is occasionally dropping
frames during a control transaction, that will
cause a failed transaction--the UHD protocol assumes an error-free
channel, and has no provision for dealing with
dropped packets.
Mark
*From: *Neel Pandeya <neel.pand...@ettus.com>
*Date: *Thursday, June 6, 2019 at 2:00 PM
*To: *Mark Koenig <mark.koe...@iubelttechnologies.com>
*Cc: *"usrp-users@lists.ettus.com" <usrp-users@lists.ettus.com>
*Subject: *Re: [USRP-users] UHD Comms Error
Hello Mark:
This may indicate a hardware problem. What is specifically eliciting
the error? Does it occur with every time that there is a tune
request? Are you running your own program, or one the example
programs, such as "rx_samples_to_file"? Could you please try
upgrading to UHD 3.14.0.0, and re-running your test, and let me know
your results?
--Neel Pandeya
On Thu, 6 Jun 2019 at 12:47, Mark Koenig via USRP-users
<usrp-users@lists.ettus.com <mailto:usrp-users@lists.ettus.com>> wrote:
Please help, with the error I am seeing.
I am currently using an X310 with a UBX160 daughtercard and I get
the error below when changing the frequency parameters of the radio.
RuntimeError: EnvironmentError: IOError: Radio ctrl (A) packet
parse error - AssertionError: packet_info.packet_count ==
(seq_to_ack & 0xfff)
in uint64_t radio_ctrl_core_3000_impl::wait_for_ack(bool)
I am currently running UHD 3.9.7, but have also seen a similar
error with 3.10.2
Thanks
Mark
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