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         Resource("user_led", 0, Pins("AB8", dir="o"), Attrs(IOSTANDARD="LVCMOS15")),
  22         Resource("user_led", 1, Pins("AA8", dir="o"), Attrs(IOSTANDARD="LVCMOS15")),
  23         Resource("user_led", 2, Pins("AC9", dir="o"), Attrs(IOSTANDARD="LVCMOS15")),
  24         Resource("user_led", 3, Pins("AB9", dir="o"), Attrs(IOSTANDARD="LVCMOS15")),
  25         Resource("user_led", 4, Pins("AE26", dir="o"), Attrs(IOSTANDARD="LVCMOS15")),
  26         Resource("user_led", 5, Pins("G19", dir="o"), Attrs(IOSTANDARD="LVCMOS15")),
  27         Resource("user_led", 6, Pins("E18", dir="o"), Attrs(IOSTANDARD="LVCMOS15")),
  28         Resource("user_led", 7, Pins("F16", dir="o"), Attrs(IOSTANDARD="LVCMOS15")),
  29
  30         UARTResource(0,
  31             rx="M19", tx="K24",
  32             attrs=Attrs(IOSTANDARD="LVCMOS33")
  33         ),
  34     ]
  35     connectors  = []
  36
  37     def toolchain_program(self, products, name):
  38         openocd = os.environ.get("OPENOCD", "openocd")
  39         with products.extract("{}.bit".format(name)) as bitstream_filename:
  40             subprocess.check_call([openocd,
  41                 "-c", "source [find board/kc705.cfg]; init; pld load 0 {}; exit"
  42                       .format(bitstream_filename)
  43             ])
  44
  45
  46 if __name__ == "__main__":
  47     from ._blinky import Blinky
  48     KC705Platform().build(Blinky(), do_program=True)