Writin oscope on python

Hi everyone,

I want to see a simple cosine signal on oscope by writing a pyhton code.
I am using scopesink2.scope_sink_c tool. The code is below:

and I got this error message:
[[email protected] Desktop]# python mehmet_rx.py
Traceback (most recent call last):
File “mehmet_rx.py”, line 99, in
my_top_block().run()
File “mehmet_rx.py”, line 87, in init
num_inputs=0,
File
“/usr/lib/python2.6/site-packages/gnuradio/wxgui/scopesink_gl.py”,
line 144, in init
msg_key=MSG_KEY,
File
“/usr/lib/python2.6/site-packages/gnuradio/wxgui/scope_window.py”,
line 430, in init
wx.Panel.init(self, parent, style=wx.SIMPLE_BORDER)
File
“/usr/lib/python2.6/site-packages/wx-2.8-gtk2-unicode/wx/_windows.py”,
line 68, in init
windows.Panel_swiginit(self,windows.new_Panel(*args, **kwargs))
TypeError: in method ‘new_Panel’, expected argument 1 of type ‘wxWindow
*’

The python code:

from gnuradio import gr, usrp
from gnuradio.wxgui import stdgui2, scopesink2, fftsink2, form
import wx

class my_top_block(gr.top_block):

def __init__(self):
    gr.top_block.__init__(self)

sample_rate = 320000
ampl = 1000
decimation = 200
frequency = 1700000000
gain = 1000

#create the usrp source
#0 represents the USRP number (in case you have multiple USRPs)
u = usrp.source_c(0)

#Set the decimation
u.set_decim_rate(decimation)

#Automatically choose the sub device
#(this can be done manually, see below)
subdev_spec = usrp.pick_rx_subdevice(u)

#Set the mux
u.set_mux(usrp.determine_rx_mux_value(u, subdev_spec))

#get the sub-device
subdev = usrp.selected_subdev(u, subdev_spec)

#Select receive antenna (‘TX/RX’ or ‘RX2’): flex boards only!
subdev.select_rx_antenna(‘TX/RX’)

#Set the gain
subdev.set_gain(gain)

#Tune the center frequency
u.tune(0, subdev, frequency)

self.wxgui_scopesink2_0 = scopesink2.scope_sink_c(
self,
title=“Scope Plot”,
sample_rate=320000,
v_scale=0,
t_scale=0,
ac_couple=False,
xy_mode=False,
num_inputs=1,
)

self.connect((u, 0), (self.wxgui_scopesink2_0, 0))

if name == ‘main’:
try:
my_top_block().run()
except KeyboardInterrupt:
pass

I recommend making this application with the gnuradio companion and then
you can inspect/modify/learn-from the generated python code.

http://gnuradio.org/redmine/wiki/gnuradio/GNURadioCompanion

-Josh

see below

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v

On 07/11/2010 05:33 AM, mehmet kabasakal wrote:

File “mehmet_rx.py”, line 87, in init
TypeError: in method ‘new_Panel’, expected argument 1 of type ‘wxWindow *’
def init(self):
#0 represents the USRP number (in case you have multiple USRPs)
u.set_mux(usrp.determine_rx_mux_value(u, subdev_spec))
#Tune the center frequency
u.tune(0, subdev, frequency)

self.wxgui_scopesink2_0 = scopesink2.scope_sink_c(
self,

self is a gr.top_block not a wx panel

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