Re: [Discuss-gnuradio] New to GnuRadio (Fortran own blocks?)

[Moritz Fischer]

On 11/26/2011 09:18 AM, Uzair Baig wrote:

> Here is what I am planning. I am thinking of writing my own Fortran 
blocks
> (we are a team of 4 so yes that is possible) and integrating that with
> python; NumPy and then use that to connect with other basic blocks.

Another way to use Fortran in GNU Radio is to wrap them in a C++ block, 
you might want to have a look at [0] to see how we did that. This 
however supposes that you actually want to use the GNU Radio runtime to 
write a GNU Radio application (which I'm not entirely sure of is what 
you want to do). Maybe you could elaborate further on what you are 
actually planning to do?

> Please tell me if that will work (as in how much efficient would that 
be), and
> whether there is a way round understanding the blocks.

If I understand you correctly you want to have an answer on how 
efficient that is and if it is possible to do this *without* 
understanding the blocks?!

> We are okay in making our own Fortran blocks and working, but we need 
to be
> sure. And would really like if we can find some book/manual to understand
> on what convention was the blocks already existing made, etc, so we use
> most of the existing work done.

I think there is no official convention for writing Fortran blocks in 
GNU Radio, but for coding guidelines see README.hacking.

May I ask a final question, why did you select Fortran? Do you have a 
lot of matrix computations to do?

In our case we used Fortran for several reasons including wanting to 
learn how to do it, and (to our knowledge) the lack of equally fast 
implementations in C/C++ of the matrix computations involved.

Cheers & happy hacking,

Moritz

[0] http://github.com/kit-cel/gr-specest.git