On 06/16/2012 07:18 AM, Stephen wrote: > > Hi, > > I have several processing chains I need to switch in and out of my flow > graph. What I have is several chains that look like > > filter1->quad_demod1-> ... > filter2->quad_demod2-> ... > > Can I not connect the chains together first and then just switch them in > and out ? > > Say chain 2 was the one connected to the source as > usrp_source -> filter2 -> ... > > Can I not switch to chain 1 by > > top_block->lock(); > top_block->disconnect(usrp_source, 0, filter2, 0); > top_block->connect(usrp_source, 0, filter1, 0); > top_block->unlock(); >
You may want to checkout the stream selector block in this project, as opposed to stopping and disconnecting: https://github.com/guruofquality/grextras/wiki#wiki-list-of-blocks-in-this-project > When I try to connect the chains together at startup I'm getting a seg > fault with the following line. Its the first line where I connect the > first chain together. > > top_block->connect(filter1, 0, quad_demod1, 0); > > What am I not understanding about this? I recommend taking a look at a gdb traceback. But if I had to guess, filter1 or quad_demod could be an empty shared pointer -> ie not initialized. -josh _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
