Re: [Discuss-gnuradio] uhd digital-bert script !

[Nick Foster]

On Mon, 2011-08-08 at 12:16 -0400, saketh kumar wrote:
> Hello everyone
> 
>    I am working on USRPN200 with RFX2400. I am trying to make
> digital-bert scripts to work for uhd devices. I have modified them a
> bit but i am getting some errors which am unable to debug. If anyone
> can help me out. Attached are my benchmark_tx and transmit_path
> scripts.
> 
> while running the script, it shows me :
> 
> address@hidden:~/gnuradio/gnuradio-examples/python/digital-bert
> $ ./uhd_benchmark_tx.py -f 2500M -g 16
> linux; GNU C++ version 4.4.5; Boost_104200; UHD_003.001.002-5239879
> 
> >>> gr_fir_ccf: using SSE
> Modulation: 250k bits/sec
> TX IF rate: 500k samples/sec
> USRP interpolation: 256
> DAC amplitude: 2000
> -- Opening a USRP2/N-Series device...
> -- Current recv frame size: 1472 bytes
> -- Current send frame size: 1472 bytes
> -- mboard0 is MIMO master
> 
> UHD Warning:
>     Unable to set the thread priority. Performance may be negatively
> affected.
>     Please see the general application notes in the manual for
> instructions.
>     EnvironmentError: OSError: error in pthread_setschedparam
> Gain d'board: 16 dB
> Actual center frequency 2.5G
> Traceback (most recent call last):
>   File "./uhd_benchmark_tx.py", line 109, in <module>
>     tb = tx_bpsk_block(options)
>   File "./uhd_benchmark_tx.py", line 56, in __init__
>     self.connect(self._transmitter, self._usrp)
>   File
> "/usr/local/lib/python2.6/dist-packages/gnuradio/gr/top_block.py",
> line 124, in connect
>     self._connect(points[i-1], points[i])
>   File
> "/usr/local/lib/python2.6/dist-packages/gnuradio/gr/top_block.py",
> line 130, in _connect
>     dst_block.to_basic_block(), dst_port)
>   File
> "/usr/local/lib/python2.6/dist-packages/gnuradio/gr/gnuradio_core_runtime.py",
>  line 1504, in primitive_connect
>     return
> _gnuradio_core_runtime.gr_top_block_sptr_primitive_connect(self,
> *args)
> ValueError: port number 0 exceeds max of (none)

You're connecting a signal source to a USRP source. The source block is
the "receiver" block; it produces samples. The sink block is the
"transmitter" block; it consumes samples.

--n

> 
> 
> -- 
> Saketh Kumar
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio