Re: [USRP-users] Timeout On Chan 0 Error

[Jason Matusiak via USRP-users]

 Peter, I know that this is an old thread, but I was wondering if you remember 
if you've ever solved this? I think that I am running into the same issue with 
my RFNOC OOT block.

Thanks.





Hi All,
 Tutorial aside, I was running the rfnoc_fir example from GNU Radio
 Companion. At 10M sample rate, the example works with no errors. At 50M
 sample rate the graphs show data while the terminal prints "overrun on chan
 0" errors, then eventually the graphs freeze and the terminal prints
 "timeout on chan 0".
 
 Is this a problem with delays inside the FPGA with the RFNoC blocks? Can
 the timeout be changed to a larger number for chan 0?
 
 Cheers
 
 On Tue, May 22, 2018 at 8:08 PM, Peter Sanchez 
 wrote:
 
 > Hello,
 >> I have a USRP X310 and just finished going through the RFNoC Getting
 > Started tutorial. After uploading the desired blocks to the FPGA, I wanted
 > to run the example in GNU Radio Companion, like in the tutorial, but the
 > terminal keeps showing "timeout on chan 0" errors. The Link light flashes
 > between green and amber while this happens.
 >> I swapped the custom gain block that I made during the tutorial for the
 > RFNoC Digital Gain block, in the GNU Radio Companion and in the FPGA, but
 > the error persists.
 > If I remove either Gain blocks and connect the DDC straight to the Copy
 > block, the timeout errors stop.
 >> Does any one know what is wrong? I'm running Ubuntu and have the latest
 > RFNoC files installed using the methods described in the tutorial.
 >> Thanks
 >>
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Re: [USRP-users] Timeout On Chan 0 Error

[Peter Sanchez via USRP-users]

Hi All,
Tutorial aside, I was running the rfnoc_fir example from GNU Radio
Companion. At 10M sample rate, the example works with no errors. At 50M
sample rate the graphs show data while the terminal prints "overrun on chan
0" errors, then eventually the graphs freeze and the terminal prints
"timeout on chan 0".

Is this a problem with delays inside the FPGA with the RFNoC blocks? Can
the timeout be changed to a larger number for chan 0?

Cheers

On Tue, May 22, 2018 at 8:08 PM, Peter Sanchez 
wrote:

> Hello,
>
> I have a USRP X310 and just finished going through the RFNoC Getting
> Started tutorial. After uploading the desired blocks to the FPGA, I wanted
> to run the example in GNU Radio Companion, like in the tutorial, but the
> terminal keeps showing "timeout on chan 0" errors. The Link light flashes
> between green and amber while this happens.
>
> I swapped the custom gain block that I made during the tutorial for the
> RFNoC Digital Gain block, in the GNU Radio Companion and in the FPGA, but
> the error persists.
> If I remove either Gain blocks and connect the DDC straight to the Copy
> block, the timeout errors stop.
>
> Does any one know what is wrong? I'm running Ubuntu and have the latest
> RFNoC files installed using the methods described in the tutorial.
>
> Thanks
>
>
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Re: [USRP-users] Timeout On Chan 0 Error

[Peter Sanchez via USRP-users]

Hi Jonathon,

The test bench passes cases 1-4 but hangs on case 5. I even copied the
noc_block_gain.v and noc_block_gain_tb.sv from the reference files attached
on the tutorial website, and the test bench results are the same (hangs on
case 5). Then I tried not loading the tutorial Gain module to the FPGA, but
loaded the existing RFNoC Digital Gain block and used that in the GNU Radio
Companion, but the "timeout on chan 0" error still is there.

Do you suspect case 5 failing for the tutorial Gain block is related to the
stock Digital Gain block also not working?

Cheers,
Peter


On Wed, May 23, 2018 at 7:10 AM, Jon Pendlum  wrote:

> Hi Peter,
>
> Does the testbench you make as part of the tutorial work?
>
> Jonathon
>
>
> On Wed, May 23, 2018, 12:09 PM Peter Sanchez via USRP-users <
> usrp-users@lists.ettus.com> wrote:
>
>> Hello,
>>
>> I have a USRP X310 and just finished going through the RFNoC Getting
>> Started tutorial. After uploading the desired blocks to the FPGA, I wanted
>> to run the example in GNU Radio Companion, like in the tutorial, but the
>> terminal keeps showing "timeout on chan 0" errors. The Link light flashes
>> between green and amber while this happens.
>>
>> I swapped the custom gain block that I made during the tutorial for the
>> RFNoC Digital Gain block, in the GNU Radio Companion and in the FPGA, but
>> the error persists.
>> If I remove either Gain blocks and connect the DDC straight to the Copy
>> block, the timeout errors stop.
>>
>> Does any one know what is wrong? I'm running Ubuntu and have the latest
>> RFNoC files installed using the methods described in the tutorial.
>>
>> Thanks
>>
>> ___
>> USRP-users mailing list
>> USRP-users@lists.ettus.com
>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>>
>
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Re: [USRP-users] Timeout On Chan 0 Error

[Jon Pendlum via USRP-users]

Hi Peter,

Does the testbench you make as part of the tutorial work?

Jonathon


On Wed, May 23, 2018, 12:09 PM Peter Sanchez via USRP-users <
usrp-users@lists.ettus.com> wrote:

> Hello,
>
> I have a USRP X310 and just finished going through the RFNoC Getting
> Started tutorial. After uploading the desired blocks to the FPGA, I wanted
> to run the example in GNU Radio Companion, like in the tutorial, but the
> terminal keeps showing "timeout on chan 0" errors. The Link light flashes
> between green and amber while this happens.
>
> I swapped the custom gain block that I made during the tutorial for the
> RFNoC Digital Gain block, in the GNU Radio Companion and in the FPGA, but
> the error persists.
> If I remove either Gain blocks and connect the DDC straight to the Copy
> block, the timeout errors stop.
>
> Does any one know what is wrong? I'm running Ubuntu and have the latest
> RFNoC files installed using the methods described in the tutorial.
>
> Thanks
>
> ___
> USRP-users mailing list
> USRP-users@lists.ettus.com
> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>
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