Re: [Discuss-gnuradio] how to use the gnuradio block with c programing

On Mon, Apr 18, 2016 at 10:43 PM, Ekko <chai18740449846@gmail.com> wrote:

hi Tom

i read the examples in gr-audio/examples/c++, and the examples in gr-uhd/examples/c++;

these two examples is all use the block in gnuradio,just like the audio sink,uhd sink.

and i want to multiple the output of the signal source of gnuradio with my own data (for example the data in an array);

the function connect will not work here,so i want to know how can i use gnuradio block just like a function not with the connect,

because my own data is not ok for connect.

thank you

--Ekko

No. Blocks are designed to work within a flowgraph. You can use a vector_source_x block to pull samples into a flowgraph from a vector though.

Tom

(Ok, so it's possible to call work/general_work yourself from outside of a flowgraph, but it's very difficult to set up and do and almost certainly not worth the hassle.)

 

2016-04-18 21:18 GMT+08:00 Tom Rondeau <tom@trondeau.com>:

On Mon, Apr 18, 2016 at 3:53 AM, Ekko <chai18740449846@gmail.com> wrote:

hello all

i want to know how to write a c program with the lib of gnuradio.

for example i want to write a c program,to add a 15HZ sin signal with a 135HZ sin signal,then send from the usrp.

i know how to send the data to the usrp.but i don't know how to use the signal source and the add fnuction of gnuradio in c program,just like use the uhd api as a fnuction.

i will not want to write a oot block,i just want to write a *.c file to accomplish this work.

but i don't how to start.

is there some demo in gnuradio about how to use the gnuradio with C?just like the tx_samples_c.c in uhd.

or something others to teel me how to solve this .

thank you

--Ekko

Ekko,

No, you cannot write a C program. GNU Radio is all written in C++, so you will have to do this with a C++ program.

You can find examples in the source code under gr-audio/examples/c++ and gr-uhd/examples/c++.

Tom