Dear Derek,

I tried the link that you gave but no luck.
1) I disabled the use of timestamp and, dissecting the packets with wireshark, I cross-checked that the use_timestamp bit is 0. 2) I added the set_rx_streamer and issue_cmd to my flograph but nothing happens. I am not sure if both commands work properly, but I guess they do.

Do you have additional hints on that?

Thank you.


Dr. Pol Henarejos
Researcher
Array and Multi-Sensor Processing Department, Communication Systems Division
pol.henare...@cttc.cat

Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
Av. Carl Friedrich Gauss, 7
08860 Castelldefels, Barcelona (Spain)
Tel: +34 93 645 29 00  Ext: 2177
www.cttc.cat

El 22/6/2018 a les 14:21, Pol Henarejos via USRP-users ha escrit:
Thank you, Derek. I will take a look.
I hope that some progress will be achieved in a near future.

Best regards.


Dr. Pol Henarejos
Researcher
Array and Multi-Sensor Processing Department, Communication Systems Division
pol.henare...@cttc.cat

Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
Av. Carl Friedrich Gauss, 7
08860 Castelldefels, Barcelona (Spain)
Tel: +34 93 645 29 00  Ext: 2177
www.cttc.cat

El 22/6/2018 a les 13:13, Derek Kozel ha escrit:
Hello Dr Henarejos,

Currently an RFNoC only flowgraph is not fully supported. What is missing is the issuing of the commands to start streaming and a mechanism to handle timestamps. Some modifications are needed to make these work. Nick Foster has done a write up on a few different ways of handling the necessary modifications.

https://corvid.io/2017/04/22/stupid-rfnoc-tricks-loopback/

Regards,
Derek

On Fri, Jun 22, 2018 at 10:10 AM, Pol Henarejos via USRP-users <usrp-users@lists.ettus.com <mailto:usrp-users@lists.ettus.com>> wrote:

    Dear all,

    I am playing with RFNoC on a USRP X300. I built a custom RFNoC FPGA
    image with the blocks that I need successfully and everything goes
    smooth. However, if I want to use a flowgraph with only RFNoC blocks
    (RFNoC Radio RX --> DmaFIFO --> RFNoC Radio TX), it does not work.
    The USRP does nothing (no blinking leds, no error messages,
    nothing). If I replace the DmaFIFO block with a Copy block, then it
    works but, as expected, this is not efficient since all the samples
    go to the host and go back to the USRP. I would want to perform a
    relay by using only RFNoC blocks. My impression is that a command to
    the USRP might be needed (a streaming command or so), but I have no
    idea what is wrong.

    I attach the flowgraph.

    (only RFNoC blocks does not work)

    (flowing samples to host and going back to USRP does work but it is
    extremely inefficient)

    Thank you.


    --
    Dr. Pol Henarejos
    Researcher
    Array and Multi-Sensor Processing Department, Communication Systems Division
    pol.henare...@cttc.cat <mailto:pol.henare...@cttc.cat>

    Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
    Av. Carl Friedrich Gauss, 7
    08860 Castelldefels, Barcelona (Spain)
    Tel: +34 93 645 29 00  Ext: 2177
    www.cttc.cat <http://www.cttc.cat>


    _______________________________________________
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    http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
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