Hey Jason,

Have you tried using a smaller SPP such as 256?

Jonathon

On Thu, Jul 26, 2018 at 2:39 AM, Jason Matusiak via USRP-users
<usrp-users@lists.ettus.com> wrote:
> So, somehow I got things working for the first run in a certain situation.
> I attached 2 pictures to show my flowgraphs.  Again, my LBT block is
> currently just swapping the inputs to the outputs (in0 -> out1 and in1 ->
> out0).
>
> The working image seems to work everytime.
>
> The non-working image, seems to never work anymore (I get those "timeout on
> channel 0" errors).
>
> Currently, my swapping is like the RFNoC loopback example.  What I wonder
> is, could I be having some sort of issues due to back-pressure or something.
> I tried with some DMA-FIFOs around, but that didn't seem to help in any way.
>
> This is my swap:
>
> assign m_axis_data_tready[1] = s_axis_data_tready[0];
> assign s_axis_data_tvalid[1] = m_axis_data_tvalid[0];
> assign s_axis_data_tlast[1] = m_axis_data_tlast[0];
> assign s_axis_data_tdata[63:32] = m_axis_data_tdata[31:0];
>
> assign m_axis_data_tready[0] = s_axis_data_tready[1];
> assign s_axis_data_tvalid[0] = m_axis_data_tvalid[1];
> assign s_axis_data_tlast[0] = m_axis_data_tlast[1];
> assign s_axis_data_tdata[31:0] = m_axis_data_tdata[63:32];
>
>
>
>
> --------- Original Message ---------
> Subject: Re: [USRP-users] RFNoC flowgraph runs right the second time
> Date: 7/25/18 10:42 am
> To: "Ettus Mail List" <usrp-users@lists.ettus.com>
> Cc: "Martin Braun" <martin.br...@ettus.com>
>
> Thanks Martin. I tried that, but it actually seems to be working when I look
> at the results.  I saw you post earlier to someone about changing UHD's
> logging level.  Is this something that can be done via a config file?  I
> looked around, but all I could find was some references to c++ usage.
>
>
>> Jason,
>>
>> this is a tough one. I have no ideas, other than 'throw in a couple of
>> ILAs and see where it's stuck'.
>
>> -- M
>
>
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