[Discuss-gnuradio] FLEX900 daughterboard not working with usrp_oscope.py

[wxwize]

Hello,

I am using a FLEX900 daughterboard with the USRP board.  I am trying to run 
usrp_oscope.py, an example program contained within gnuradio-examples-0.7.  I 
have installed the latest usrp updates from 
http://usrp.svnrepository.com/usrp/trac.cgi.

First, usrp_oscope would not run due to incomplete definitions for the FLEX900 
board in the file db_flexrf.py.  There was a divide by zero error because 
gain_range was not defined for the FLEX900, and another error because power_on 
method was not defined.

I don't have a schematic (it's not available yet), but comparing the FLEX2400 
and FLEX400 BOMs to what I see on the FLEX900 board, it looks like the FLEX2400 
is most similar.  (Admittedly, just a guess.)  Looking at the other 
daughterboard code within the file, I added the following to db_flexrf.py:

class _900_common(_AD4360_common):
    .
    .
    def freq_range(self):           # I added this based on
        return (800e6, 1000e6, 1e6) # how the other boards are set up.

class db_flexrf_900_tx(_900_common, flexrf_base_tx):
    .
    .
        self.power_on = POWER_UP    # I added this based on
        self.power_off = ~POWER_UP  # how the other boards are set up.
    .
    .
class db_flexrf_900_rx(_900_common, flexrf_base_rx):
    .
    .
        self.power_on = POWER_UP    # I added this based on
        self.power_off = ~POWER_UP  # how the other boards are set up.
    .
    .
    def gain_range(self):#I copied this from flexrf_2400_rx to fix a
                         #divide by zero error, don't know what the values 
                         #should really be.
        return (self._u.pga_min(), self._u.pga_max() + 70, 0.05)
    .
    .

These changes eliminated the errors and the o-scope application comes up, 
displaying the window with adjustment controls, etc.  However, the grid lines 
and vertical scale are not being displayed, and no signal is displayed.  It's 
just blank.  In addition, the application doesn't close properly, it hangs.  
This behavior in contrast with no daughterboard installed, I can see the noise 
on channels 1 and 2.
  
Does anyone have suggestions on what I adjustments I may still need to make for 
this particular daughterboard?

Is there a favorite IDE with stepping/breakpoint capability with python? 

Best regards,
Jon

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