Re: [Discuss-gnuradio] Using USRP to transmit and receive samples

[Martin Braun (CEL)]

On Mon, Oct 21, 2013 at 09:06:24PM -0500, JPL wrote:
> Hello, Martin
> 
> 
> 1. Would you please tell me where the "manual page" is?

It's in the manual.
You go to gnuradio.org, click 'C++ manual', then 'Related Pages', then
'Tagged Stream Blocks'.

> Because I cannot understand 
> 
> How the Vector source works (tagged_streams.make_lengthtags((packet_len,),
> (0,).length_tag_name)?
> 
> and where the "Import"block grab the value from (from gnuradio.digital.utils
> import tagged_streams), (import numpy), and (import random)?
> 
> I just need to know how vector source related to those import block
> 
> 
> 2. And you are saying keep "vector source" block not replace with "file 
> source"
> block.
> 
> How can vector source import and read my *.dat?

You will have to load the .dat into a variable and then pass that to the
vector sink. It's not the most user-friendly method, I admit, but the
tagged stream blocks are still pretty new and we're only just figuring
out use-cases.

MB

-- 
Karlsruhe Institute of Technology (KIT)
Communications Engineering Lab (CEL)

Dipl.-Ing. Martin Braun
Research Associate

Kaiserstraße 12
Building 05.01
76131 Karlsruhe

Phone: +49 721 608-43790
Fax: +49 721 608-46071
www.cel.kit.edu

KIT -- University of the State of Baden-Württemberg and
National Laboratory of the Helmholtz Association

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