Forum: GNU Radio Issue Stream Command

Hi,
    I want to transmit  fixed numbers of sample from the
sin_sig_source.And I find the issue_stream_command in
multi_usrp.hpp.Does the command contral the flow graph so that I just
connect the flow graph and add the command in python? I appreciate any 
tips.
    Thanks in advance.

On 03/14/2013 09:06 PM, Gong Zhang wrote:
> Hi,
>    I want to transmit  fixed numbers of sample from the
> sin_sig_source.And I find the issue_stream_command in
> multi_usrp.hpp.Does the command contral the flow graph so that I just
> connect the flow graph and add the command in python? I appreciate any
> tips.
>    Thanks in advance.
>

Issue stream command is for RX, and this is exposed in python, so you
can call it.

Now for tx, if you wanted to transmit a fixed number of samples, its
best that the producer of data frame the end of its bursts with a EOB
tag. But I suppose something quick and dirty would be
sig_source -> head -> usrp_sink


A few examples here w/ the tags:
http://code.ettus.com/redmine/ettus/projects/uhd/w...

-josh