Re: When i want to run some RFNOC blocks in Gnuradio i faced with errors module 'ettus' has no attribute 'device3'

[Vasil Velichkov]

Hi sp h,

On 10/01/2022 10.28, sp h wrote:
> When I removed device 3 block I had these errors
> 
>   File "/home/sp/Downloads/default474.py", line 192, in main
>     tb = top_block_cls()
>   File "/home/sp/Downloads/default474.py", line 143, in __init__
>     self.ettus_rfnoc_digital_gain_0 = ettus.rfnoc_generic(
> AttributeError: module 'ettus' has no attribute 'rfnoc_generic'
> 
> with device 3 block in the GRC file, I had these errors...
> 
>     main()
>   File "/home/sp/Downloads/default474.py", line 199, in main
>     tb = top_block_cls()
>   File "/home/sp/Downloads/default474.py", line 76, in __init__
>     self.device3 = usrp = ettus.device3(uhd.device_addr_t(
> ",".join(('type=x300', '')) ))
> AttributeError: module 'ettus' has no attribute 'device3'

A possible reason for errors like above is undefined reference/symbol in the 
OOT's shared object (.so) file. Go in the gr-ettus' build director, execute 
"ldd -r ./libs/libgnuradio-ettus.so" and provide its full output.

Also open python/__init__.py, change ImportError to ModuleNotFoundError then 
rebuild and reinstall.

See https://github.com/gnuradio/gnuradio/issues/4761

Regards,
Vasil