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     resources  = [
  17         Resource("clk156", 0, DiffPairs("K28", "K29", dir="i"),
  18                  Clock(156e6), Attrs(IOSTANDARD="LVDS_25")),
  19
  20         Resource("user_led", 0, Pins("AB8", dir="o"), Attrs(IOSTANDARD="LVCMOS15")),
  21         Resource("user_led", 1, Pins("AA8", dir="o"), Attrs(IOSTANDARD="LVCMOS15")),
  22         Resource("user_led", 2, Pins("AC9", dir="o"), Attrs(IOSTANDARD="LVCMOS15")),
  23         Resource("user_led", 3, Pins("AB9", dir="o"), Attrs(IOSTANDARD="LVCMOS15")),
  24         Resource("user_led", 4, Pins("AE26", dir="o"), Attrs(IOSTANDARD="LVCMOS15")),
  25         Resource("user_led", 5, Pins("G19", dir="o"), Attrs(IOSTANDARD="LVCMOS15")),
  26         Resource("user_led", 6, Pins("E18", dir="o"), Attrs(IOSTANDARD="LVCMOS15")),
  27         Resource("user_led", 7, Pins("F16", dir="o"), Attrs(IOSTANDARD="LVCMOS15")),
  28
  29         UARTResource(0,
  30             rx="M19", tx="K24",
  31             attrs=Attrs(IOSTANDARD="LVCMOS33")
  32         ),
  33     ]
  34     connectors = []
  35
  36     def toolchain_program(self, products, name):
  37         openocd = os.environ.get("OPENOCD", "openocd")
  38         with products.extract("{}.bit".format(name)) as bitstream_filename:
  39             subprocess.check_call([openocd,
  40                 "-c", "source [find board/kc705.cfg]; init; pld load 0 {}; exit"
  41                       .format(bitstream_filename)
  42             ])
  43
  44
  45 if __name__ == "__main__":
  46     from ._blinky import build_and_program
  47     build_and_program(KC705Platform, "clk156")