nextpnr/python/dump_design.py

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# Run ./nextpnr-ice40 --json ice40/blinky.json --file python/dump_design.py
for cell in sorted(design.cells, key=lambda x: x.first):
print("Cell {} : {}".format(cell.first, cell.second.type))
for port in sorted(cell.second.ports, key=lambda x: x.first):
dir = (" <-- ", " --> ", " <-> ")[int(port.second.type)]
print(" {} {} {}".format(port.first, dir, port.second.net.name))