Make a Logic Analyzer with Xilinx Spartan 6 - Papilio FPGA Pt 2 : probe I2C

The Papilio FPGA board is an excellent FPGA development board. It's got a Xilinx Spartan chip.

And you can use it as a quite capable logic analyzer.

blog: https://www.element14.com/community/people/jancumps/blog/2015/03/19/make-a-logic-analyzer-from-your-dev-kit-part-2-papilio-fpga ... https://www.youtube.com/watch?v=My8KvjXHzsA