airprobe: gsm-tvoid : gsm_scan.py problem part1

2011-09-13

I meet a problem when I run the gsm-tovid.
Firstly, I enter the /airprobe/gsm-tvoid/src
typed : ./gsm_scan.py -p d -c 39 > scan_results

a error arising:
root@ubuntu:/home/my_project/usrp/airprobe/gsm-tvoid/src/python# ./gsm_scan.py -p d -c 5  > scan_results
% offset =  0.0 clock =  64000000.0
fusb_block_size = 4096
fusb_nblocks    = 16
Traceback (most recent call last):
  File "./gsm_scan.py", line 734, in <module>
    main()
  File "./gsm_scan.py", line 728, in main
    app = stdgui2.stdapp(app_flow_graph, "GSM Scanner", nstatus=1)
  File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py", line 36, in __init__
    wx.App.__init__ (self, redirect=False)
  File "/usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode/wx/_core.py", line 7978, in __init__
    self._BootstrapApp()
  File "/usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode/wx/_core.py", line 7552, in _BootstrapApp
    return _core_.PyApp__BootstrapApp(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py", line 39, in OnInit
    frame = stdframe (self.top_block_maker, self.title, self._nstatus)
  File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py", line 60, in __init__
    self.panel = stdpanel (self, self, top_block_maker)
  File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py", line 81, in __init__
    self.top_block = top_block_maker (frame, self, vbox, sys.argv)
  File "./gsm_scan.py", line 174, in __init__
    self.setup_flowgraph()   
  File "./gsm_scan.py", line 554, in setup_flowgraph
    self.setup_usrp()
  File "./gsm_scan.py", line 366, in setup_usrp
    options.rx_subdev_spec = pick_subdevice(self.ursp)
  File "./gsm_scan.py", line 88, in pick_subdevice
    if u.db[0][0].dbid() >= 0:
TypeError: 'instancemethod' object is not subscriptable

So I look the error messages and open the gsm_scan.py. I use ctrl + F to locate the pick_subdevice function. I think u.db[0][0].dbid() is not matched for new Gnuradio Version. Because the Gnuradio is updated to 3.4.1 now. I open other Gnuradio example code to compare this function and find it now uses u.db(0,0).dbid() not u.db[0][0].dbid().
 
def pick_subdevice(u):
    """
    The user didn't specify a subdevice on the command line.
    If there's a daughterboard on A, select A.
    If there's a daughterboard on B, select B.
    Otherwise, select A.
    """
    if u.db(0, 0).dbid() >= 0:       # dbid is < 0 if there's no d'board or a problem
        return (0, 0)
    if u.db(0, 0).dbid() >= 0:
        return (1, 0)
    return (0, 0)








using new code fix it right and go on.
It can run but another problem arises.


root@ubuntu:/home/my_project/usrp/airprobe/gsm-tvoid/src/python# ./gsm_scan.py -p d -c 5  > scan_results
% offset =  0.0 clock =  64000000.0
fusb_block_size = 4096
fusb_nblocks    = 16
>>> gr_fir_ccc: using SSE
>>> gr_fir_ccf: using SSE
Segmentation fault


This error is very difficult. Oops!! What the hell is going on?
Now I try my best to find the answer.