File Reading

GNU Radio
#1

I am having trouble reading a file and putting it as a variable or some
way
so that the USRP Source block will read it and evaluate each item. I’m
using a file source and i tried connecting to a message sink, but I’m
stuck
there because the output of the sink does not match the input of the
USRP
Source. Is there a way to have a txt file read and put into a array of
some
sort to be evaluated?

#2

On Tue, Jun 9, 2015 at 8:31 AM, Ashraf Y. [email protected]
wrote:

I am having trouble reading a file and putting it as a variable or some
way so that the USRP Source block will read it and evaluate each item. I’m
using a file source and i tried connecting to a message sink, but I’m stuck
there because the output of the sink does not match the input of the USRP
Source. Is there a way to have a txt file read and put into a array of some
sort to be evaluated?

The file source block reads binary data that it converts to stream of
samples.

What you want sounds like you could write a simple Python function to
accomplish.

Tom

#3

On Tue, Jun 9, 2015 at 9:17 AM, Ashraf Y. [email protected]
wrote:

Thank you for responding. I’m still new to GRC, so I don’t know how to go
about doing that. Would I have to write a .py file? Then how would I import
it to GRC?

Please keep replies on the list.

So I was about to reply something along the lines of “It’s just Python,
you
can figure it out,” but then I realized that we provide a good mechanism
for handling this; it’s just not well exposed. So I wrote a tutorial on
it
this morning:

http://gnuradio.org/redmine/projects/gnuradio/wiki/TutorialPythonFunctions

Hope this helps.

Tom

#4

This helps a lot. Thank you. I hope I’m adding this reply to the list
correctly.