Experiments with ice40 using yosys flow

To make firmware

make

To run testbenches

make test

To load firmware onto ice stick

make prog

On mac os you need to unload apple serial kext beforehand and then load it back to launch minicom to talk to stick

Additional configuration

If html view generator is not in path, it can be added as variable to optional config.mk file

Notes

tests only generate vsd files for viewing, not making any asserts