Hi Xianda, if you don't use gnuradio, this might not be the right list for you... Anyway, I think it's possible you're confusing something. start_of_burst / end_of burst are stream tags that are GNU Radio concepts. There is not something like this without GNU Radio. UHD supports timed commands, which might be close to what you need, but I really don't understand what your question aims at.
Greetings, Marcus On 30.07.2014 16:50, xianda wrote: > Hi: > Thank you so much for your kindly reply.I write c++ code use the uhd not > gnuradio.So need I add start_of_burst at the beginning of every packet and > add end_of_burst at the end of every packet?Thank you. > Best regards, > xd > > > > > > > At 2014-07-30 10:05:47, "Martin Braun" <martin.br...@ettus.com> wrote: >> On 07/30/2014 03:59 AM, xianda wrote: >>> Hi all: >>> I know a packet in the example tx_ofdm.grc include a preamble,a >>> header,the payload and crc value.Recently I have used the UHD API to >>> send packet.And I want to know whether the tx_ofdm.grc add >>> start_of_burst and end_of_burst automatically.Namely,need I add >>> start_of_burst at the beginning of every packet and add end_of_burst at >>> the end of every packet? >> usrp_sink understands tagged streams. So, the OFDM code does *not* add >> EOB, but that doesn't matter if you have an up-to-date gr-uhd. >> >> M >> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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