Dear all,
I try to make simulation for qam loopback. But there is an error:
RuntimeError: hierarchical block 'qam8_demod' input 0 is not connected
internally
What is the error mean?
Thank you for your help
Makmur
File "/home/makmur/sim_qam_loopback.py", line 150, in <module>
tb.Run(True)
File
"/usr/lib/python2.6/dist-packages/grc_gnuradio/wxgui/top_block_gui.py", line
73, in Run
if start: self.start()
File "/usr/lib/python2.6/dist-packages/gnuradio/gr/top_block.py", line 97,
in start
self._tb.start()
File
"/usr/lib/python2.6/dist-packages/gnuradio/gr/gnuradio_swig_py_runtime.py",
line 1411, in start
return _gnuradio_swig_py_runtime.gr_top_block_sptr_start(*args,
**kwargs)
RuntimeError: hierarchical block 'qam8_demod' input 0 is not connected
internally
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