Re: [Discuss-gnuradio] GnuRadio Port: The system cannot find the file specified

[Ryan van den Bergh]

Hi Guys,

Thanks very much for the assistance!! The problem was that I hadn't installed the UHD binary from Ettus (I feel like a bit of an idiot, I should have worked that out). Once I did that, and included the path in my environmental variables, I no longer received any errors when running: python.exe -c "from gnuradio import uhd".

Unfortunately this hasn't cleared up my other problem. I'm still getting this error when I try to run a simple flow graph in Gnu Radio Companion:

Generating: "C:\Program Files (x86)\gnuradio\bin\top_block.py"

Executing: "C:\Program Files (x86)\gnuradio\bin\top_block.py"
[Error 2] The system cannot find the file specified
>>> Done

The graph I created is very simple and is composed of: a signal source, a throttle, and a QT GUI Sink. It seems that the top_block.py is actually created (I can see it in windows explorer), but it Gnu Radio Companion doesn't seem to be able to find or run the file. Just in case it helps, I've added the file's contents below my e-mail. Do you guys have any idea as to what could be causing this?

Thanks again and kind regards,

Ryan

#!/usr/bin/env python
##################################################
# Gnuradio Python Flow Graph
# Title: Top Block
# Generated: Fri Apr 15 18:48:30 2011
##################################################

from PyQt4 import Qt
from gnuradio import eng_notation
from gnuradio import gr
from gnuradio.eng_option import eng_option
from gnuradio.gr import firdes
from gnuradio.qtgui import qtgui
from optparse import OptionParser
import sip
import sys

class top_block(gr.top_block, Qt.QWidget):

    def __init__(self):
        gr.top_block.__init__(self, "Top Block")
        Qt.QWidget.__init__(self)
        self.setWindowTitle("Top Block")
        self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
        self.top_layout = Qt.QVBoxLayout(self)
        self.top_grid_layout = Qt.QGridLayout()
        self.top_layout.addLayout(self.top_grid_layout)

        ##################################################
        # Variables
        ##################################################
        self.samp_rate = samp_rate = 32000

        ##################################################
        # Blocks
        ##################################################
        self.qtgui_sink_x_0 = qtgui.sink_c(
            1024, #fftsize
            firdes.WIN_BLACKMAN_hARRIS, #wintype
            0, #fc
            samp_rate, #bw
            "QT GUI Plot", #name
            True, #plotfreq
            True, #plotwaterfall
            True, #plotwaterfall3d
            True, #plottime
            True, #plotconst
        )
        self._qtgui_sink_x_0_win = sip.wrapinstance(self.qtgui_sink_x_0.pyqwidget(), Qt.QWidget)
        self.top_layout.addWidget(self._qtgui_sink_x_0_win)
        self.gr_throttle_0 = gr.throttle(gr.sizeof_gr_complex*1, samp_rate)
        self.gr_sig_source_x_0 = gr.sig_source_c(samp_rate, gr.GR_COS_WAVE, 1000, 1, 0)

        ##################################################
        # Connections
        ##################################################
        self.connect((self.gr_sig_source_x_0, 0), (self.gr_throttle_0, 0))
        self.connect((self.gr_throttle_0, 0), (self.qtgui_sink_x_0, 0))

    def get_samp_rate(self):
        return self.samp_rate

    def set_samp_rate(self, samp_rate):
        self.samp_rate = samp_rate
        self.gr_sig_source_x_0.set_sampling_freq(self.samp_rate)
        self.qtgui_sink_x_0.set_frequency_range(0, self.samp_rate)

if __name__ == '__main__':
    parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
    (options, args) = parser.parse_args()
    qapp = Qt.QApplication(sys.argv)
    tb = top_block()
    tb.start()
    tb.show()
    qapp.exec_()

On Fri, Apr 15, 2011 at 5:57 PM, Marcus D. Leech <address@hidden> wrote:

On 15/04/2011 11:51 AM, Josh Blum wrote:

FWIW I have been adding everything to the user side of the environment
vars. Maybe you are running the app as a different user?

-Josh

Hmmm, the other day when I ran into "can't find the DLLs" issue, despite having all the appropriate directories in the user-mode %PATH%
 variable, it couldn't find 'em.  So, I added to the *system* instance, and suddenly it could find the DLLs.  Windows? How do I hate thee?
 Let me count the ways....

_______________________________________________
Discuss-gnuradio mailing list
address@hidden
http://lists.gnu.org/mailman/listinfo/discuss-gnuradio