Hi, I ran into that issue once and I simply recompiled UHD with the relevant lines commented out.
regards On Mon, Sep 25, 2017 at 3:54 PM, Shoorveer Singh via USRP-users < usrp-users@lists.ettus.com> wrote: > Hi all, > > I am using USRP B200mini/B205 to develop a custom DSP. For that purpose, I > am trying to find an insertion point in the Ettus FPGA code. > I started with modifying the code in *b205.v* by tying RX and TX to a > constant value and expecting to see the same value when running SDR. The > code compiles and I am able to generate the FPGA bit file, but when I try > to run SDR, I get the following error: > > *Detected Device: B200mini* > *-- Loading FPGA image: > /usr/local/share/uhd/images/usrp_b200mini_fpga.bin... done* > *-- Operating over USB 3.* > *-- Initialize CODEC control...* > *-- Initialize Radio control...* > *-- Performing register loopback test... pass* > *-- Performing CODEC loopback test... fail* > *Traceback (most recent call last):* > * File "/home/nev/AuesLayer1Stuff/importantGRC/top_block.py", line 292, > in <module>* > * main()* > * File "/home/nev/AuesLayer1Stuff/importantGRC/top_block.py", line 286, > in main* > * tb = top_block_cls()* > * File "/home/nev/AuesLayer1Stuff/importantGRC/top_block.py", line 199, > 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 2681, in make* > * return _uhd_swig.usrp_source_make(*args)* > *RuntimeError: RuntimeError: CODEC loopback test failed.* > > How can I bypass this error? And where should I look in the Ettus FPGA > code if I want to modify captured data. > > -- > Thanks and Regards > Shoor > > > > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com > >
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