Hi Eric , I know what file_source does but I was looking for something else. Please look at the code below to know what i am looking for.
tb.start() fil=open("/home/murtuza/t",'r') # I first open a file to read n=0 while n<1: data = fil.read(gr.sizeof_char) # then read one byte only n=n+1 send_pkt(data) # then send it over the stream to a block that processes that particular byte. print "called" tb.wait() If you look at benchmark_tx.py program data is read from a file and then send_pkt() is called. send_pkt() module in transmit_path.py calls "self.packet_transmitter.send_pkt(payload, eof)" which then calls send_pkt() in mod_pkts. Here, the payload is inserted into the message queue by the statement self._pkt_input.msgq().insert_tail(msg). I want to do something similar except for the fact that I want to put the unmodified byte in the queue unlike mod_pkts which first uses message_from_string and then inserts the msg on to the queue. If this can be done using file_source then can u tell how? I am working on something that requires me to do this. May be this is not an ideal way of doing it but still I want to know if it is possible. Thanks, Ali On Mon, Dec 29, 2008 at 8:35 AM, Eric Blossom <e...@comsec.com> wrote: > On Mon, Dec 29, 2008 at 03:48:15AM -0600, Mir Ali wrote: > > Hi, > > I want to read a byte from a file and send it to an input stream. Each > time > > I read one byte from the file i want to send it onto the input stream of > a > > particular block and then read the next byte and do the same. I looked at > > gr.message_source() which does similar work to what I need. But I see > that > > when we use gr.message_from_string(databyte) and then do > > msgq().insert_tail(msg) we add some more information to the data byte. I > > just want to send the particular byte read onto the stream. How can I do > > this? > > > > Thanks > > Ali > > > gr.file_source(gr.sizeof_char, "/path/to/my/file") > >
_______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio