If you created a custom block in python that would do the right thing as
far as writing the file and handling the data; then you could use the
variable chooser (button) or variable text box (string input) to
generate the event.
-Josh
On 01/19/2011 10:47 AM, emat...@yahoo.com wrote:
> He all-
>
> is there a way to implement a button controlling a record-to-file function
> where the filename is generated instantly from the current time stamp? I can
> do this manually in python as follows (taken from a previously existing
> gnuradio code):
>
> #
> # Recording file, in case we ever need to record baseband data
> #
> self.recording = gr.file_sink(gr.sizeof_float, "/dev/null")
> self.recording_state = False
> # Filename prefix for recording file
> self.prefix = options.prefix
>
> # We come up with recording turned off, but the user may
> # request recording later on
> self.recording.close()
>
> .
> .
> .
>
> self.connect (self.source, self.recording)
>
> .
> .
> .
>
> # Data recording control
> buttonbox = wx.BoxSizer(wx.HORIZONTAL)
> self.record_control = form.button_with_callback(self.panel,
> label="Recording Data: Off
> ",
> callback=self.toggle_recording)
>
> buttonbox.Add(self.record_control, 0, wx.CENTER)
>
> .
> .
> .
>
> #
> # Turn recording on/off
> # Called-back by "Recording" button
> #
> def toggle_recording(self):
> # Pick up localtime, for generating filenames
> timestamp = time.localtime()
>
> # Generate filenames for both data and header file
> filename = "%04d_%02d_%02d_%02d:%02d:%02d.dat" % (timestamp.tm_year,
> timestamp.tm_mon,
> timestamp.tm_mday, timestamp.tm_hour,
> timestamp.tm_min,timestamp.tm_sec)
>
> # Current recording? Flip state
> if (self.recording_state == True):
> self.recording_state = False
> self.record_control.SetLabel("Recording Data: Off
> ")
> self.recording.close()
> # Not recording?
> else:
> self.recording_state = True
> self.record_control.SetLabel("Recording Data to: "+filename)
>
> # Cause gr_file_sink object to accept new filename
> # note use of self.prefix--filename prefix from
> # command line (defaults to ./)
> #
> self.recording.open (self.prefix+filename)
>
>
> Thanks!
> eric
>
>
>
>
>
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