Re: [Discuss-gnuradio] filename using time-stamp in GRC

[Josh Blum]

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