nmigen_boards/kc705.py

   1 import os
   2 import subprocess
   3
   4 from nmigen.build import *
   5 from nmigen.vendor.xilinx_7series import *
   6 from .dev import *
   7
   8
   9 __all__ = ["KC705Platform"]
  10
  11
  12 class KC705Platform(Xilinx7SeriesPlatform):
  13     device      = "xc7k325t"
  14     package     = "ffg900"
  15     speed       = "2"
  16     default_clk = "clk156"
  17     resources   = [
  18         Resource("clk156", 0, DiffPairs("K28", "K29", dir="i"),
  19                  Clock(156e6), Attrs(IOSTANDARD="LVDS_25")),
  20
  21         *LEDResources(pins="AB8 AA8 AC9 AB9 AE26 G19 E18 F16",
  22                       attrs=Attrs(IOSTANDARD="LVCMOS15")),
  23
  24         UARTResource(0,
  25             rx="M19", tx="K24",
  26             attrs=Attrs(IOSTANDARD="LVCMOS33")
  27         ),
  28     ]
  29     connectors  = []
  30
  31     def toolchain_program(self, products, name):
  32         openocd = os.environ.get("OPENOCD", "openocd")
  33         with products.extract("{}.bit".format(name)) as bitstream_filename:
  34             subprocess.check_call([openocd,
  35                 "-c", "source [find board/kc705.cfg]; init; pld load 0 {}; exit"
  36                       .format(bitstream_filename)
  37             ])
  38
  39
  40 if __name__ == "__main__":
  41     from ._blinky import Blinky
  42     KC705Platform().build(Blinky(), do_program=True)