[USRP-users] How to solve command timeout error?

Nate Temple nate.temple at ettus.com
Wed Jul 5 19:54:15 EDT 2017

Hi Haile,

Sorry for missing this post.  When you're stopping the flowgraph, are you
using the "X" in the corner of the running flowgraph, or are you using the
"Kill Flowgraph" button within GRC ? Using the "Kill flowgraph" button will
not properly free up the internal resources, and can cause this error.
However using the "X"/Close button in the corner within the running
flowgraph will allow the resources to be freed.

Nate Temple

On Tue, May 9, 2017 at 1:36 AM, Haile Berhe via USRP-users <
usrp-users at lists.ettus.com> wrote:

> Dear all,
> I have been working on my X310 USRP just fine. But after I have
> installed rfnoc modules and reload fpga images , the behavior of the
> device becomes unpredictable. It sometimes throws the following error
> message even if I run non rfnoc application:
> “RuntimeError: EnvironmentError: IOError: Block ctrl (CE_00_Port_30)
> no response packet - AssertionError: bool(buff)
>   in uint64_t ctrl_iface_impl::wait_for_ack(bool)
>   at /home/haile/prefix/default/src/uhd/host/lib/rfnoc/ctrl_iface.cpp:197”
> I have observed that the above error is not thrown in the first run
> after I power cycle the device. [1] seems to discuss the issue but the
> proposed solution is not clear. It says, check ce_clk/ce_rst are
> connected in the rfnoc_ce_auto_inst_<device>.v., etc .. How am I
> supposed to check?
> Thanks,
> [1] https://kb.ettus.com/RFNoC
> _______________________________________________
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> USRP-users at lists.ettus.com
> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
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