nMigen FPGA test
This is a simple application to test running an nMigen design on actual FPGA hardware.
It's just a 'blinking LED' program that increments a 3-bit counter and toggles each color of an RGB LED based on each bit in the counter.
The ice40up5k_bb.py file contains a description of Lattice's iCE40UP5K-SG48 breakout board:
https://www.digikey.com/short/z8ddhq
And the upduino.py file contains a description of Gnarly Grey's more affordable 'Upduino' board which uses the same iCE40UP5K-SG48 chip:
There's not much to see here; I just wanted to learn how to build an nMigen design and program an FPGA with it.
Prerequisites
To run this example, you'll need to install nmigen and the main components of the icestorm toolchain:
https://github.com/nmigen/nmigen
https://github.com/nmigen/nmigen-boards
https://github.com/YosysHQ/yosys
https://github.com/cliffordwolf/icestorm
https://github.com/YosysHQ/nextpnr
Once everything is installed, you should be able to build and flash the program by running the blink.py file with the type of board you are using:
python3 blink.py up5k_bb
python3 blink.py upduino