Accessing memory address + file sink problem

GNU Radio
1

Hi Eric,

I have a very small problem but I am not able to figure that out. I
need to
have access to the samples of the signal source so that I can use them
for
further processing such as picking up 2 samples and mapping them to a
complex symbol. But what I understand from the Signal Source code is
that it
returns a pointer since whenever I try to print the variable containing
the
signal source it prints a random memory address. Is it possible to
access
the samples of the signal source.
I have a problem regarding file sink too. I cannot understand the
extension
i need to give while saving the file in the file sink. If i save it as a
python file or text file, both occasions it fails to open.

Regards,
Harshal

2

harshal jadhav wrote:

extension i need to give while saving the file in the file sink. If i
save it as a python file or text file, both occasions it fails to open.

Regards,
Harshal

The files are written as binary samples, not ASCII. You have to read
them in as binary values. There are a number of programs in the source
code, like the gr_plot_* in gr-utils and some Matlab/Octave files in
gnuradio-core/src/utils that show you how you can read files in.

There are also a number of messages on the listserv that address this
question that you can go back and search for.

Tom