Hello everyone,
Has anyone worked with fsk_loopback.py? I have been analyzing it and using a file with ascii characters as an input, but I get no output. I am trying to develop a system that will transmit text from one machine to another. Based on the FSK code, I first made this program: src = gr.file_source(gr.sizeof_char, 'input.dat', False) snk = gr.file_sink(gr.sizeof_char, 'output.dat') connect(src, snk) It correctly transferred "Hello World." to the output. This let me test that GNURadio can read/write basic text files Next, I wrote code with no FSK component that just does the data handling. (I plan to write ASK,PSK, and FSK code eventually) packet_size = 16 src = gr.file_source(gr.sizeof_char, 'input.dat', False) #data frame = gr.simple_framer(packet_size) #put into packets pcm = gr.bytes_to_syms() # convert to +-1 corr = gr.simple_correlator(packet_size) # Correlate the data snk = gr.file_sink(gr.sizeof_char, 'output.dat') # store is again connect(src, frame, pcm, corr, snk) I get a 0 byte output file in this case If I connect pcm to a floating point file sink I get data. I then tried using my text file on fsk_loopback.py and I get a 0 byte output file. Any advice on what I am doing incorrectly? Thanks, ~Chris Roberts~ _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
