Re: [Discuss-gnuradio] Help using UCLA Zigbee PHY examples updated for UHD

[Baidoo-Williams, Henry E]

Hi Josh,
I do not think there is a command line input for any channel line. The input 
parameters are these;
        address@hidden:~/gr-ieee802-15-4/src/examples$ sudo 
./uhd_cc2420_rxtest.py  --help
        linux; GNU C++ version 4.5.2; Boost_104200; UHD_003.003.000-25f0bd5

        Usage: uhd_cc2420_rxtest.py [options]

        Options:
        -h, --help            show this help message and exit
         -a ADDRESS, --address=ADDRESS
                        Address of UHD device, [default=addr=192.168.10.2]
        -A ANTENNA, --antenna=ANTENNA
                        select Rx Antenna where appropriate
          -c FREQ, --cordic-freq=FREQ
                        set rx cordic frequency to FREQ
         -r DATA_RATE, --data_rate=DATA_RATE
         -f FILENAME, --filename=FILENAME
                        write data to FILENAME
        -g GAIN, --gain=GAIN  set Rx PGA gain in dB [0,20]

If I run the script with parameters, I still get the same error

        address@hidden:~/gr-ieee802-15-4/src/examples$ sudo 
./uhd_cc2420_rxtest.py -c 2.45e9 -g 20
        linux; GNU C++ version 4.5.2; Boost_104200; UHD_003.003.000-25f0bd5

        cordic_freq = 2.45G
        data_rate =  2M
        samples_per_symbol =  2
        -- Opening a USRP2/N-Series device...
        -- Current recv frame size: 1472 bytes
        -- Current send frame size: 1472 bytes
        Center frequency: 2450000000 
        >>> gr_fir_fff: using SSE
        Traceback (most recent call last):
         File "./uhd_cc2420_rxtest.py", line 122, in <module>
        main ()
         File "./uhd_cc2420_rxtest.py", line 109, in main
          tb = oqpsk_rx_graph(options, rx_callback)
        File "./uhd_cc2420_rxtest.py", line 67, in __init__
        threshold=-1)
        File 
"/usr/local/lib/python2.7/dist-packages/gnuradio/ucla_blks/ieee802_15_4_pkt.py",
 line 241, in __init__
        self._watcher = _queue_watcher_thread(self._rcvd_pktq, self.callback, 
self.chan_num)
        File 
"/usr/local/lib/python2.7/dist-packages/gnuradio/gr/hier_block2.py", line 50, 
in __getattr__
         return getattr(self._hb, name)
        AttributeError: 'gr_hier_block2_sptr' object has no attribute 'chan_num'

Also there is no parameter chan_num in the python script. I am also assuming 
the error is not emanating from the UCLA zigbee PHY since others have 
successfully used it and besides the same script worked on the USRP N210 as was 
posted on the mailing list.

-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of Josh Blum
Sent: Tuesday, May 15, 2012 6:01 PM
To: address@hidden
Subject: Re: [Discuss-gnuradio] Help using UCLA Zigbee PHY examples updated for 
UHD


>     File 
> "/usr/local/lib/python2.7/dist-packages/gnuradio/ucla_blks/ieee802_15_4_pkt.py",
>  line 241, in __init__
>     self._watcher = _queue_watcher_thread(self._rcvd_pktq, self.callback, 
> self.chan_num)
>      File 
> "/usr/local/lib/python2.7/dist-packages/gnuradio/gr/hier_block2.py", line 50, 
> in __getattr__
>     return getattr(self._hb, name)
>    AttributeError: 'gr_hier_block2_sptr' object has no attribute 'chan_num'
> 

Looks like a pretty strait forward error. There is no chan_num attribute. So 
what class is "self" and why is it missing chan_num? How does chan_num get 
initialized?

Perhaps there is a command line option you are not passing, and there isnt any 
input checking/sanitation, so the error falls all the way through to this part 
of the code.

-josh

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uhd_cc2420_rxtest.py
Description: uhd_cc2420_rxtest.py