If your packets are too large, there is some fragmentation logic that also plays with the burst flags. You may be seeing this fragmentation within the usrp2 driver at work. Look inside the usrp2_impl.cc in the tx_raw method.

-Josh

On 02/22/2010 05:15 AM, Per Zetterberg wrote:
Hi All,

I am trying to understand how to use the vrt code. I want to transmit a
burst. For the first vrt packet I use

hdr.header = VRTH_PT_IF_DATA_NO_SID | VRTH_START_OF_BURST |
VRTH_TSI_OTHER;

for the "middle" vrt packets I use

hdr.header = VRTH_PT_IF_DATA_NO_SID;

and for the "final" vrt packets

hdr.header = VRTH_PT_IF_DATA_NO_SID | VRTH_END_OF_BURST.

Is this the correct  (it doesn't really seem to work the way I want).

BR/
Per






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