Hello,
I was trying to receive the signal from UHD Sink (n310) in GNU Radio
Companion (GRC) but got the following error message (i.e., GRC cannot find
N310). I am using Ubuntu 18.04, GNU RADIO 3.9, and UHD 4.0.0. I have
confirmed that
- My GRC can work with N210.
- I can ping both eth0 and SPF+ ports of N310 from host.
- In terminal "uhd_find_devices" can find N310.
- "uhd_usrp_probe" can also find N310. Output message is attached below.
- I can log in N310 using SSH.
- I have updated N310's FPGA image. The OS in N310 is also UHD 4.0.0 (the
same as the host).
Any suggestions would be appreciated.
Thanks,
Hua
================================
ERROR MESSAGE FROM GRC
================================
Traceback (most recent call last):
File "/home/cnss/test2.py", line 150, in <module>
main()
File "/home/cnss/test2.py", line 126, in main
tb = top_block_cls()
File "/home/cnss/test2.py", line 84, in __init__
channels=list(range(0,1)),
File "/usr/lib/python3/dist-packages/gnuradio/uhd/__init__.py", line 125,
in constructor_interceptor
return old_constructor(*args)
File "/usr/lib/python3/dist-packages/gnuradio/uhd/uhd_swig.py", line
3259, in make
return _uhd_swig.usrp_source_make(device_addr, stream_args,
issue_stream_cmd_on_start)
RuntimeError: LookupError: KeyError: No devices found for ----->
Device Address:
addr: 192.168.20.2
================================
OUTPUT OF "uhd_usrp_probe"
================================
uhd_usrp_probe "addr=192.168.20.2"
[INFO] [UHD] linux; GNU C++ version 7.5.0; Boost_106501;
UHD_4.0.0.HEAD-0-g90ce6062
[INFO] [MPMD] Initializing 1 device(s) in parallel with args:
mgmt_addr=192.168.20.2,type=n3xx,product=n310,serial=31F54AE,claimed=False,addr=192.168.20.2
[INFO] [MPM.PeriphManager] init() called with device args
`mgmt_addr=192.168.20.2,product=n310,clock_source=internal,time_source=internal'.
[WARNING] [UDP] The send buffer could not be resized sufficiently.
Target sock buff size: 25000000 bytes.
Actual sock buff size: 1048576 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.wmem_max=25000000
_____________________________________________________
/
| Device: N300-Series Device
| _____________________________________________________
| /
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