DESCRIPTION =========== This program has been created to aid open source spectrum analyzer development for Qualcomm/Atheros AR92xx and AR93xx based chipsets. It visualizes the FFT data reported by the chips to help intepreting and understanding the data. TODO: The interpreted data format is unknown! Please help investigating the data, or help acquiring information about the data format from Qualcomm Atheros! BUILD ===== You need to have SDL and SDL_ttf development packages installed on your system, as well as make and gcc. Just type make to build the program: $ make gcc -O2 -Wall -pedantic -c -o fft_eval.o fft_eval.c gcc -lSDL -lSDL_ttf -o fft_eval fft_eval.o $ USAGE ===== First, you need to acquire sample data from your spectral-scan enabled Atheros WiFi card. If the patches are applied correctly, you can use the following commands: ifconfig wlan0 up iw dev wlan0 scan spec-scan cat /sys/kernel/debug/ieee80211/phy0/ath9k/spectral_scan > /tmp/fft_results There are some recorded samples in the "samples" directory to try it out without actual hardware. To view the FFT results, use: ./fft_eval /tmp/fft_results Navigate through the currently selected datasets using the arrow keys (left and right). Scroll through the spectrum using the Page Up/Down keys. LICENSE ======= Read the GPL v2 file 'COPYING'. AUTHOR ====== This software has been written by Simon Wunderlich <siwu@hrz.tu-chemnitz.de> for Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.