[srsran-users] srsRAN_4G with bladeRF

[Nitin Jain]

Hi Robert and other community members,Request you to please share any solutions.I have tried many solutions provided in https://github.com/Nuand/bladeRF/issues/778

and documentation of my own issue is provided in https://github.com/srsran/srsRAN_4G/issues/1247


Briefly, I am able to set up srsRAN_4G with Ettus B210 without any issues and attach does happen pretty consistently. But with bladeRF 2.0 micro xA4, it is highly erratic and intermittent.I have tried many quick things provided in https://github.com/Nuand/bladeRF/issues/778
Since B210 is a borrowed from friend, I want to migrate to Nuand bladeRF 2.0 micro xA4.
But no difference and benchmark_radio (simulating sample rate change) still fails and even gets stuck.
I even tried few hacks like setting #define constant STOP_STREAM_BEFORE_RATE_CHANGE to 1 from 0.
as outlined in https://github.com/srsran/srsRAN_4G/issues/1248
but no difference in behaviour.

Quite frustrated with bladeRF at present.
RegardsNitin
 

    On Friday, 24 November, 2023 at 10:07:22 pm IST, Robert Falkenberg <robert.falkenberg at srs.io> wrote:  
 
  Hi Alin,
 
 I'm afraid the USB 2.0 interface of the USRP E310 is too slow for this application.
 
 Best regards,
 Robert
 
 On 23.11.23 20:39, Alin wrote:
  
 
Hello everyone,  
  I'm encountering a problem when trying to run srsenb with a USRP E310. I'm receiving an RFNoC timeout, and the log files show the following entries before the error occurs:
  2023-11-23T19:21:07.542061 [RF     ] [I] Mapping RF channel 0 (device=0, channel=0) to logical carrier 0 on f_rx=2560.0 MHz
 2023-11-23T19:21:09.012826 [RF     ] [E] Fatal radio error occured.
 2023-11-23T19:21:09.012896 [RF     ] [I] Overflow
 2023-11-23T19:21:09.013033 [RF     ] [D] Detected RF gap of -3000.0 us. Tx'ing zeroes.
 2023-11-23T19:21:10.014082 [RF     ] [I] Detected RF gap of -7000.0 us. Sending end-of-burst.
 2023-11-23T19:21:11.029532 [RF     ] [D] Detected RF gap of -3000.0 us. Tx'ing zeroes.
 2023-11-23T19:21:12.032808 [RF     ] [D] Detected RF gap of -3000.0 us. Tx'ing zeroes
  Im running UHD 4.5.0 on e310 and host from ettus ppa. Any suggestions would help a lot!  
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Robert Falkenberg
 
Senior Engineer
 
Software Radio Systems
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  | Dortmund, Germany |

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