Hello All
I am trying to play around and use different types of modulation for
benchmark_tx.py
However it seems that I am only able to transmit with gmsk modulation,
any
other accepted modulation (all other modulation types) results in this:
./benchmark_tx.py -m cpm -f 800M
Traceback (most recent call last):
File “./benchmark_tx.py”, line 131, in
main()
File “./benchmark_tx.py”, line 95, in main
tb = my_top_block(mods[options.modulation], options)
File “./benchmark_tx.py”, line 41, in init
self.txpath = transmit_path(modulator, options)
File
“/home/admin/gnuradio/gnuradio/gnuradio-examples/python/digital/transmit_path.py”,
line 63, in init
self._setup_usrp_sink(options)
File
“/home/admin/gnuradio/gnuradio/gnuradio-examples/python/digital/transmit_path.py”,
line 110, in _setup_usrp_sink
self.u = usrp_options.create_usrp_sink(options)
File
“/home/admin/gnuradio/gnuradio/gnuradio-examples/python/digital/usrp_options.py”,
line 99, in create_usrp_sink
fusb_nblocks=options.fusb_nblocks,
File
“/home/admin/gnuradio/gnuradio/gnuradio-examples/python/digital/generic_usrp.py”,
line 150, in init
self._setup_usrp2_source()
File
“/home/admin/gnuradio/gnuradio/gnuradio-examples/python/digital/generic_usrp.py”,
line 186, in _setup_usrp2_source
self._u = usrp2.sink_32fc(self._interface, self._mac_addr)
File “/usr/local/lib/python2.5/site-packages/gnuradio/usrp2.py”, line
1102, in sink_32fc
return _usrp2.sink_32fc(*args, **kwargs)
RuntimeError: Invalid MAC address
Exception exceptions.AttributeError: “‘gr_hier_block2_sptr’ object has
no
attribute ‘_type’” in <bound method generic_usrp_sink_c.del of
<generic_usrp.generic_usrp_sink_c object at 0x87caf6c>> ignored
I tried searching the mailing list for invalid mac address issues but
none
came up!
Please help!