On 07/18/2012 11:32 AM, Anisha Gorur wrote: > Hello All, > > I've been attempting to create my own source block in Python. I have been > reading the blocks coding guide here: > https://github.com/guruofquality/grextras/wiki/Blocks-Coding-Guide#wiki-work-operation-modes, > but so far my source only outputs zeros. > An outline of my code is as follows: > > class constSource(gr.block): > def __init__(self): > gr.block.__init__(self, name = "signal source", in_sig = > None,out_sig = [numpy.complex64]) > > def work(self, input_items, output_items): > num_output_items = len(output_items[0]) > > #I put the code to create what I want to stream here, the code > creates a numpy.complex64 array with a length of 32. I then return > num_output_items
You didnt include the code, but I am guessing that you are not assigning anything to the output vector? numpy array assignment look like this output_items[0][some kind of index selection] = data Look closely at how the examples do this -josh > return num_output_items > > I then write my constSource block to a file and I try to see the output of > the file using a scope sink, but it is just a constant stream of zeros. Am _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
