Hi All, I am manipulating GNU Radio Companion. While using the "Constellation Decoder" block, I have put *digital.constellation_qpsk* as a "Constellation Object" argument. But, I have found an error when I have executed the flow graph:
*Traceback (most recent call last):* * File "/users/anb10/metrics/error_rate.py", line 342, in <module>* * tb = error_rate()* * File "/users/anb10/metrics/error_rate.py", line 225, in __init__* * self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(digital.constellation_qpsk)* * File "/usr/lib64/python2.6/site-packages/gnuradio/digital/digital_swig.py", line 3096, in constellation_decoder_cb* * return _digital_swig.constellation_decoder_cb(*args, **kwargs)* *TypeError: in method 'constellation_decoder_cb', argument 1 of type 'digital_constellation_sptr'* I don't know what went wrong. I have even tried *digital.psk.psk_constellation(m=4,mod_code='gray')*, *digital.constellation_8psk *and *digital.psk.psk_constellation(m=8,mod_code='gray')* as a "Constellation Object" argument. So, what is the proper way to define the argument (Constellation Object) in the "Constellation Decoder" block? I hope you can give me some ideas. Any help is appreciated. Thank you. Regards, Azza
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