nmigen_boards/icestick.py

   1 import os
   2 import subprocess
   3
   4 from nmigen.build import *
   5 from nmigen.vendor.lattice_ice40 import *
   6 from .dev import *
   7 from .dev.uart import IrDAResource
   8
   9
  10 __all__ = ["ICEStickPlatform"]
  11
  12
  13 class ICEStickPlatform(LatticeICE40Platform):
  14     device      = "iCE40HX1K"
  15     package     = "TQ144"
  16     default_clk = "clk12"
  17     resources   = [
  18         Resource("clk12", 0, Pins("21", dir="i"),
  19                  Clock(12e6), Attrs(GLOBAL="1", IO_STANDARD="SB_LVCMOS33")),
  20
  21         Resource("user_led", 0, Pins("99", dir="o"), Attrs(IO_STANDARD="SB_LVCMOS33")),
  22         Resource("user_led", 1, Pins("98", dir="o"), Attrs(IO_STANDARD="SB_LVCMOS33")),
  23         Resource("user_led", 2, Pins("97", dir="o"), Attrs(IO_STANDARD="SB_LVCMOS33")),
  24         Resource("user_led", 3, Pins("96", dir="o"), Attrs(IO_STANDARD="SB_LVCMOS33")),
  25         Resource("user_led", 4, Pins("95", dir="o"), Attrs(IO_STANDARD="SB_LVCMOS33")),
  26
  27         UARTResource(0,
  28             rx="9", tx="8", rts="7", cts="4", dtr="3", dsr="2", dcd="1",
  29             attrs=Attrs(IO_STANDARD="SB_LVTTL", PULLUP="1")
  30         ),
  31
  32         IrDAResource(0,
  33             rx="106", tx="105", sd="107",
  34             attrs=Attrs(IO_STANDARD="SB_LVCMOS33")
  35         ),
  36
  37         *SPIFlashResources(0,
  38             cs="71", clk="70", mosi="67", miso="68",
  39             attrs=Attrs(IO_STANDARD="SB_LVCMOS33")
  40         ),
  41     ]
  42     connectors  = [
  43         Connector("pmod", 0, "78 79 80 81 - - 87 88 90 91 - -"),  # J2
  44
  45         Connector("j", 1, "- - 112 113 114 115 116 117 118 119"), # J1
  46         Connector("j", 3, "- -  62  61  60  56  48  47  45  44"), # J3
  47     ]
  48
  49     def toolchain_program(self, products, name):
  50         iceprog = os.environ.get("ICEPROG", "iceprog")
  51         with products.extract("{}.bin".format(name)) as bitstream_filename:
  52             subprocess.check_call([iceprog, bitstream_filename])
  53
  54
  55 if __name__ == "__main__":
  56     from ._blinky import Blinky
  57     ICEStickPlatform().build(Blinky(), do_program=True)