[USRP-users] N310 Device Claim Issue

Ramazan Çetin ramazan.cetin at gohm.com.tr
Mon Mar 4 05:18:28 EST 2019


Hi all,

I am using N310 for my gnuradio OFDM application. Sometimes, my gnuradio 
application closes abruptly (because of segfault, some errors etc.). 
After that, when i try restarting application it gives that error;


[INFO] [UHD] linux; GNU C++ version 7.3.0; Boost_106501; 
UHD_3.14.0.HEAD-0-gc7941e05
[INFO] [MPMD] Initializing 1 device(s) in parallel with args: 
mgmt_addr=192.168.10.2,type=n3xx,product=n310,serial=3175D89,claimed=True,addr=192.168.10.2,force_reinit=1
[ERROR] [RPC] Someone tried to claim this device again
Traceback (most recent call last):
   File 
"/home/rcetin/workspace/gohm/bitbucket/physicallayergnuradio/ofdm_rx_tx_hier_blocks.py", 
line 296, in <module>
     main()
   File 
"/home/rcetin/workspace/gohm/bitbucket/physicallayergnuradio/ofdm_rx_tx_hier_blocks.py", 
line 285, in main
     tb = top_block_cls()
   File 
"/home/rcetin/workspace/gohm/bitbucket/physicallayergnuradio/ofdm_rx_tx_hier_blocks.py", 
line 58, in __init__
     channels=range(1),
   File 
"/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/__init__.py", line 
122, in constructor_interceptor
     return old_constructor(*args)
   File 
"/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py", line 
2782, in make
     return _uhd_swig.usrp_source_make(*args)
RuntimeError: RuntimeError: Error during RPC call to `claim'. Error 
message: Someone tried to claim this device again


I cannot restart application until i reboot the device. Is there a 
solution for this issue? Do i have to reboot device each time if my 
application closes badly?

Best regards.

Ramazan




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