Hi David, "items" is a output/input buffer stream term in GNU Radio. You can just put whatever data type you'd want (ok, a lot of data types) into PMTs, and send them around; for sample vectors, PMT uniform vectors are the way to go. If you just use message passing, you don't need to implement a meaningfull work() function -- you don't even have to actually use a subclass of gr::block (but I recommend doing that for the sake of getting loads of functionality for free).
Most probably there are blocks that do what you want, maybe you want something like random source --> throttle [1] --> message sink? Greetings, Marcus [1] this is one of the *very* few times I'd recommend using throttle. Otherwise, the source will just run at maximum speed and roast the message passing system to a fine crisp. On 16.10.2014 16:30, David Halls wrote: > Dear All, > > How can I create a block like 'Random PDU Generator', but that outputs items > rather than PDUs over a message port? > > Hopefully its easy but I am not clear if I need a work function or not, and > if I don't have one then how do I pass the items out, as one does in a normal > block? > > Perhaps there are already blocks that do what I am trying to achieve? > > Thanks for your help!! > > Regards, > > David > > --------------------------------------------------------------- > David Halls Ph.D. > Research Engineer > Toshiba Research Europe Limited > 32 Queen Square, Bristol, BS1 4ND, UK > Tel: +44 (0) 117 906 0790 > > > ________________________________ > > NOTE: The information in this email and any attachments may be confidential > and/or legally privileged. This message may be read, copied and used only by > the intended recipient. If you are not the intended recipient, please destroy > this message, delete any copies held on your system and notify the sender > immediately. > > Toshiba Research Europe Limited, registered in England and Wales (2519556). > Registered Office 208 Cambridge Science Park, Milton Road, Cambridge CB4 0GZ, > England. Web: www.toshiba.eu/research/trl > --------------------------------------------------------------------------------------- > This email has been scanned for email related threats and delivered safely > by Mimecast. > For more information please visit http://www.mimecast.com > --------------------------------------------------------------------------------------- > > > > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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