onebitbt

A more extreme version of the ADC/DAC projects mentioned here is my (old) project that built a Bluetooth transceiver using just an FPGA and an antenna (and a low pass filter if you don't want the FCC coming after you): https://github.com/newhouseb/onebitbt Tl;dr: if you blast in/out the right 5GHz binary digital signal from a SERDES block on an FPGA connected to a short wire you can talk to your phone!

Good eye! That's indeed a typo in the notebook. Somehow in the actual design I have the correct pairing https://github.com/newhouseb/onebitbt/blob/master/onebitbt/r.... Since writing this particular notebook I've actually built out a proper CORDIC module, so once I get back to the environment where I was writing all this (I am nomadic right now w/ anemic compute) I can fix this and rerun things (and add in my CORDIC implementation).

In addition to the (likely) obvious benefit of Python versus a traditional HDL that hacks in really janky scripting features for testbenches (read Verilog), one of the main draws for nMigen is that you can combine things like Jupyter notebooks and Numpy into a REPL like development approach for developing and testing digital logic [1]. I can't speak to the quality of my nmigen code, but earlier in the year I managed to pull together a (basic) bluetooth radio using exclusively nmigen which should demonstrate that you can build "real" things with it: https://github.com/newhouseb/onebitbt [1] https://github.com/newhouseb/onebitbt/blob/master/research/D...