gr-csitool is a customized gnuradio tool for sniffering 802.11 g packets and reporting CSI. It is compatible to gnuradio V3.7.
To build gr-csitool, you have to install two modules, gr-csitool and gr-wifirecv.
In the root directory of each module, run,
mkdir build
cd build
cmake ..
make
sudo make install
sudo ldconfig
To further obtain MAC data, you have to install gr-ieee802-11.
Examples (Wi-Fi receiver) are provided in the project.