[USRP-users] N310 Device Claim Issue

Ramazan Çetin ramazan.cetin at gohm.com.tr
Mon Mar 4 06:48:30 EST 2019


Hi again,

I could resolve this issue by restarting hwdaemon;

systemctl restart usrp-hwd.service

This solves problem. After that i need to load the FPGA image again.

Best regards.

On 4.03.2019 13:18, Ramazan Çetin wrote:
> 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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