The input signature is not a problem here. For gr::io_signature::*make*(2, 2, sizeof(gr_complex)), i.e. when using make, size of all input items is same. Its is different when using make2, make3 and makev.
On 13 January 2018 at 01:23, Sakthivel Velumani <[email protected]> wrote: > Hi Sumit, > > You have given no of input streams as 2 but mentioned size of item for > only one. This may be the source of the error. Try correcting it and let us > know. > > Regards, > Sakthivel > > On Fri, Jan 12, 2018 at 10:37 PM, sumit kumar <[email protected]> wrote: > >> Hi, >> >> I am trying to use *gr::io_signature::makev* for my output signature in >> my bar_impl.cc >> >> bar_impl::bar_impl(int offset, int freq) >> : gr::block("bar", >> gr::io_signature::make(2, 2, sizeof(gr_complex)), >> * gr::io_signature::makev(4, 4, out_vect))* >> >> For that in the header I did following in the header bar_impl.h >> >> *const std::vector<int> out_vect = {sizeof(gr_complex), >> sizeof(gr_complex), sizeof(float), sizeof(float)};* >> >> It compiles but when I do gr_modtool makexml, it throws this error >> >> john@john-Precision-5510:~/nuradio/src/gr-fist$ gr_modtool makexml bar >> GNU Radio module name identified: fist >> Warning: This is an experimental feature. Don't expect any magic. >> Searching for matching files in lib/: >> Making GRC bindings for lib/bar_impl.cc... >> tbi >> Error: Can't parse output signature. >> Traceback (most recent call last): >> File "/home/john/nuradio/bin/gr_modtool", line 46, in <module> >> main() >> File "/home/john/nuradio/bin/gr_modtool", line 38, in main >> modtool.run() >> File >> "/home/john/nuradio/lib/python2.7/dist-packages/gnuradio/modtool/modtool_makexml.py", >> line 76, in run >> self._make_grc_xml_from_block_data(params, iosig, blockname) >> File >> "/home/john/nuradio/lib/python2.7/dist-packages/gnuradio/modtool/modtool_makexml.py", >> line 100, in _make_grc_xml_from_block_data >> if iosig[inout]['max_ports'] == '-1': >> KeyError: 'out' >> >> Need some help :) >> >> -- >> Sumit Kumar >> >> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> [email protected] >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >> > -- Sumit Kumar
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