gr-flowgraph is used to parse and run a GNU Radio flowgraph.grc file which uses blocks from gr-digitizer during runtime in C++.
gr-flowgraph as well supports many native GNU Radio blocks.
This project was created because there are various use-cases for which a native python code generation via gnuradio-companion (creation of standalone C++ application) is not sufficient:
- There is a host application which runs/controls the flowgraph.
- The host application should be able to start/stop/reload the flowgraph, without restarting itself.
- The host application has callbacks inside some of the blocks which should be served (E.g. see gr-digitizer).
- python is not available on the runtime environment.
# Installation directory of a specific gr-digitizer version
export DIGITIZERS_DIR=/path/to/gr-digitizer/<Version>
# Creation of build folder
mkdir gr-flowgraph/build
cd gr-flowgraph/build
# Configure, add optional flags and optionally define an installation directory for gr-flowgraph
# For debug output add -DDEBUG_ENABLED=1 (check the documentation of cmake for a complete list)
cmake .. -DENABLE_GR_LOG=1 -DENABLE_STATIC_LIBS=ON -DCMAKE_INSTALL_PREFIX=/path/to/gr-digitizer/<Version>
# Compile and link (-j8 will use 8 CPU cores, put whatever works for you)
make -j8
# Optionally run unit-tests and install the result
./lib/test_flowgraph_test.sh
make install