-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 hey,
I'm not entirely sure if it still holds true, but that might be an error related to SWIG. For some reason virtual header files don't get swig'ed again unless explicitly triggered. Just do a 'make clean' and 'make' again. That should rebuild your module from scratch and also swig your headers. happy hacking Johannes On 20.07.2014 07:58, jsam45 wrote: > Using gr_modtool, I am trying to make a simple Gain block (called > var_gain) which multiplies the input with a constant. I have a > private variable called d_gain in the var_gain_impl class and a > public function set_gain(float gain) which sets the value of d_gain > to the argument. I modified the xml file by adding the line > <callback>set_gain($gain)</callback> after the <make> line. > > During execution, gain value does not change even after changing it > through a WX Slider. If I run it from terminal, I am getting the > following error - Traceback (most recent call last): File > "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/forms/forms.py", > line 180, in _handle def _handle(self, event): self[INT_KEY] = > self._slider.GetValue() File > "/usr/local/lib/python2.7/dist-packages/gnuradio/gr/pubsub.py", > line 52, in __setitem__ sub(val) File > "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/forms/forms.py", > line 138, in _translate_internal_to_external if self._callback: > self._callback(self[EXT_KEY]) File "top_block.py", line 102, in > set_gg self.fsk_var_gain_0.set_gain(self.gg) AttributeError: > 'var_gain_sptr' object has no attribute 'set_gain' > > I tried looking at some in-built blocks to see how callback is > implemented. Then I saw that the in-built blocks have pure virtual > functions in the include/module_name/var_gain.h header file. I > tried implementing that but the result is still the same. What am I > missing here? > > > > -- View this message in context: > http://gnuradio.4.n7.nabble.com/Implementing-callbacks-in-custom-blocks-tp49462.html > > Sent from the GnuRadio mailing list archive at Nabble.com. > > _______________________________________________ Discuss-gnuradio > mailing list Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBAgAGBQJTy5jKAAoJEO7fmkDsqywMl0cP/i4pl0q1e22rkQlNqikQ2fhX tltuulJ+EffNnjkUd/6mo5xOPLDW19gGgODxK5aYPuK7/jU2Dw+xoOiAo2oiORTW l9umtB4Vv3C3KRNpyOl1y36Gh+31T+kgu2UHcR6vwb239lGiwxuesKl8A2QvjqKo dzbGUn1ctmQ6a3zhOsQVSPS7fQ/Rq8f7oMIeAK94Mu0LuONO8sYPsDwTi7IuImqr q3ENR7RB1O/w1rRgIDL3Tp/zUHuhLROt1wIzvnFAFY4uQRijbm88hUaaH5gC/V8J QWiX9CVnUmrsUX1YHGDy/Yjd6X0JzqHIFFegiU8TpIxCrts7X8vVuYBKV3jyauis VA+K8PBZjOJ0afh4qfBQ58fEYUEB83uhHvuVM27u07rhJyW9xwakjF3eJEWejny1 uUsGFFH6OuS8kO8pzq0LD6rSfat1BSzW+ylLkhcaR1I6lcyDaCSN676wFqZ7UpBa snmC32uYh4N9x+c7pFx0A5Kxl8HDOgqD//GoztN6gJZU2sa0c1mAACbEk6YA1YEg TcM/dNGCiMlZFKiXr0UswA6BOZGdcvgb0Y0aM54a8ly7x70dB5oxB2/6DWvO3NE2 AmEBAaXHFtnDLGWcTpccbpLS5crFtsMZM56OkgMhtGuf0oLrHJ39BUo9YGo/8kPx dj7NSYqGWMIqjt1TMAOy =J7G6 -----END PGP SIGNATURE----- _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
