[Discuss-gnuradio] Help to get control over USRP from custom block

[Boschma, J.J. (Jeroen)]

Hi all,

 

A last attempt this time, after struggling already several months with this subject…

 

From within my custom (out-of-tree) C++ block I need full control over USRP sink/source. According to the documentation, the command interface only implements three functions (gain, center frequency and LO_offset ). I need much more functionality however (sensors, IQ-imbalance, etc…), so I looked at another solution.

 

In my custom block class I added a method that takes 2 pointers:

 

    boost::shared_prt<gr::uhd::usrp_sink>

    boost::shared_prt<gr::uhd::usrp_source>

 

In the Python top_block.py code I add a call to this method in order to pass the USRP pointers from Python to my C++ custom block.

 

The pointers seem to be valid in C++, but apparently the corresponding classes have empty virtual methods, so if I want to use the pointers nothing happens or Python crashes.

 

Does anybody know how to get pointers that have all functionality implemented from the original Ettus library? I am completely stuck... It may be an ugly hack, but I just need to get things done now.

 

Regards,

 

       Jeroen

 

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