Re: [Discuss-gnuradio] coerce endpoint - hier block API question with code
On Sat, Aug 06, 2011 at 10:08:19PM +0200, Marius wrote: Hi! I'm creating an integration for the current GNU Radio = 3.4 tree upwards for a 3d FFT display block. I put the code I got there, and added some changes: https://github.com/wishi/gr_3d_fft My probem is: Traceback (most recent call last): File usrp_gl_fft.py, line 81, in module main () File usrp_gl_fft.py, line 77, in main app = stdgui2.stdapp(app_flow_graph, 3d) [not interesting] File /usr/local/lib/python2.6/dist-packages/gnuradio/gr/top_block.py, line 128, in _connect (dst_block, dst_port) = self._coerce_endpoint(dst) File /usr/local/lib/python2.6/dist-packages/gnuradio/gr/top_block.py, line 139, in _coerce_endpoint raise ValueError(unable to coerce endpoint) ValueError: unable to coerce endpoint I know this is related to the hierarchical block API, but I don't know what I have to change. Could someone help me - at least a little? I think there's too much to do left, however I don't find a way to treat this error. If that works I'll do GRC integration and clean up the OpenGL stuff (the code is from the source mentioned in the repository, but GPL). I'm missing this kind of 3d perspective so I tried to create this graphical sink based on the mentioned code. Hi Marius, this usually means something like there's an 'open' connection (it's like leaving that one pin of your µC dangling when it should be grounded :). A quick look at the code suggests your error is in the fft_sink_c class (possibly others). In fact, you've thoroughly misunderstood what a hier_block does. A hier_block works just like any other block (from the outside). You should have a look at some of the examples in gnuradio-core/src/lib/python/gnuradio. Two things immediately stand out: - You're not calling the hier_block constructor. - You pass 'fg' to the block, but it *is* part of the flow graph. - Since this is a sink, you must have something like self.connect(self, ...) As I said, have a look at the examples. Your code can't work in this state. Good luck, MB -- Karlsruhe Institute of Technology (KIT) Communications Engineering Lab (CEL) Dipl.-Ing. Martin Braun Research Associate Kaiserstraße 12 Building 05.01 76131 Karlsruhe Phone: +49 721 608-43790 Fax: +49 721 608-46071 www.cel.kit.edu KIT -- University of the State of Baden-Württemberg and National Laboratory of the Helmholtz Association pgpUGZLgxzDUG.pgp Description: PGP signature ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] coerce endpoint - hier block API question with code
Hi! I'm creating an integration for the current GNU Radio = 3.4 tree upwards for a 3d FFT display block. I put the code I got there, and added some changes: https://github.com/wishi/gr_3d_fft My probem is: Traceback (most recent call last): File usrp_gl_fft.py, line 81, in module main () File usrp_gl_fft.py, line 77, in main app = stdgui2.stdapp(app_flow_graph, 3d) File /usr/local/lib/python2.6/dist-packages/gnuradio/wxgui/stdgui2.py, line 36, in __init__ wx.App.__init__ (self, redirect=False) File /usr/lib/python2.6/dist-packages/wx-2.8-gtk2-unicode/wx/_core.py, line 7978, in __init__ self._BootstrapApp() File /usr/lib/python2.6/dist-packages/wx-2.8-gtk2-unicode/wx/_core.py, line 7552, in _BootstrapApp return _core_.PyApp__BootstrapApp(*args, **kwargs) File /usr/local/lib/python2.6/dist-packages/gnuradio/wxgui/stdgui2.py, line 39, in OnInit frame = stdframe (self.top_block_maker, self.title, self._nstatus) File /usr/local/lib/python2.6/dist-packages/gnuradio/wxgui/stdgui2.py, line 60, in __init__ self.panel = stdpanel (self, self, top_block_maker) File /usr/local/lib/python2.6/dist-packages/gnuradio/wxgui/stdgui2.py, line 81, in __init__ self.top_block = top_block_maker (frame, self, vbox, sys.argv) File usrp_gl_fft.py, line 74, in __init__ self.connect (self.u, block) File /usr/local/lib/python2.6/dist-packages/gnuradio/gr/top_block.py, line 124, in connect self._connect(points[i-1], points[i]) File /usr/local/lib/python2.6/dist-packages/gnuradio/gr/top_block.py, line 128, in _connect (dst_block, dst_port) = self._coerce_endpoint(dst) File /usr/local/lib/python2.6/dist-packages/gnuradio/gr/top_block.py, line 139, in _coerce_endpoint raise ValueError(unable to coerce endpoint) ValueError: unable to coerce endpoint I know this is related to the hierarchical block API, but I don't know what I have to change. Could someone help me - at least a little? I think there's too much to do left, however I don't find a way to treat this error. If that works I'll do GRC integration and clean up the OpenGL stuff (the code is from the source mentioned in the repository, but GPL). I'm missing this kind of 3d perspective so I tried to create this graphical sink based on the mentioned code. Thanks in advance ;), Marius ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
