On Thu, Dec 03, 2009 at 11:16:01AM -0600, Mir M. Ali wrote: > Hi, > I developed a gnuradio block that takes 2 inputs. Input_01 is coming from a > source that repeats and Input_02 is coming from a source that exhausts after > a while. The output should only be generated when there is data on both the > input lines. I see in my flowgraph that even when the data on input_02 > exhausts output is still generated even though I see no problem with my C++ > code. Its a simple operation in which for each input in Input_02 line the > block outputs 'N' items from Input_01. Once, the data source (in this case > is a file_source in non-repeat mode) for Input_02 exhausts i.e. the file is > read completely the output should stop being generated as there is nothing > coming on Input_02. I expect the previous data stored in the buffer for > Input_02 is flushed by the scheduler after one work() cycle. > > Any help would be appreciated. > Thanks, > Mir
GNU Radio does work the way you described. You can confirm this by doing something like: src1 = gr.vector_source_f((1,2,3,4,5,6), False) src2 = gr.vector_source_f((10,11,12,13,14,15), True) op = gr.add_ff() dst = gr.vector_sink_f() tb.connect(src1, (op, 0)) tb.connect(src2, (op, 1)) tb.connect(op, dst) tb.run() This will halt. There is most likely a problem in your block. If you're subclassing gr_block, are you calling consume or consume_each? Eric _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
