[srsran-users] srsenb failed due to no USRP rf detected

[Debashisha Mishra]

Dear Team, 

I was trying to build srsenb with srsepc with recent master version. I am using a USRP B210 RF with Ubuntu 18.04 PC for the same. The "uhd_usrp_probe" and "uhd_find_devices" works fine and can detect the RF device. 
However, while running eNB, it fails with below error. Could you please help to suggest a solution/work around for this issue. I have already tried to give the proper image path for UHD, but no luck. Kindly help. Thank you. 

dev at dev-ubuntu:~/srsRAN/build$ sudo srsenb 
--- Software Radio Systems LTE eNodeB --- 

Couldn't open , trying /home/dev/.config/srsran/enb.conf 
Reading configuration file /home/dev/.config/srsran/enb.conf... 
Couldn't open sib.conf, trying /home/dev/.config/srsran/sib.conf 
Couldn't open rr.conf, trying /home/dev/.config/srsran/rr.conf 
Couldn't open rb.conf, trying /home/dev/.config/srsran/rb.conf 
WARNING: cpu0 scaling governor is not set to performance mode. Realtime processing could be compromised. Consider setting it to performance mode before running the application. 

Built in Release mode using commit 5275f3336 on branch master. 

Opening 1 channels in RF device=default with args=default 
Available RF device list: UHD 
Trying to open RF device 'UHD' 
[INFO] [UHD] linux; GNU C++ version 7.5.0; Boost_106501; UHD_4.1.0.4-release 
[INFO] [LOGGING] Fastpath logging disabled at runtime. 
[WARNING] [B200] EnvironmentError: IOError: Could not find path for image: usrp_b200_fw.hex 

Using images directory: <no images directory located> 

Set the environment variable 'UHD_IMAGES_DIR' appropriately or follow the below instructions to download the images package. 

Please run: 

"/usr/lib/x86_64-linux-gnu/uhd/utils/uhd_images_downloader.py" 
Opening USRP channels=1, args: 
[INFO] [UHD RF] RF UHD Generic instance constructed 
[WARNING] [B200] EnvironmentError: IOError: Could not find path for image: usrp_b200_fw.hex 

Using images directory: <no images directory located> 

Set the environment variable 'UHD_IMAGES_DIR' appropriately or follow the below instructions to download the images package. 

Please run: 

"/usr/lib/x86_64-linux-gnu/uhd/utils/uhd_images_downloader.py" 
/home/dev/srsRAN/lib/src/phy/rf/rf_uhd_imp.cc:930: uhd_init failed, freeing... 
[ERROR] [UHD RF] LookupError: KeyError: No devices found for -----> 
Empty Device Address 
Unable to open RF device 'UHD' 
/home/dev/srsRAN/lib/src/phy/rf/rf_imp.c:147: Failed to open a RF frontend device. Please check the available srsRAN CMAKE options to verify what RF frontend devices have been detected in your system 
Error initializing radio. 

Best Regards, 
Debashisha 
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