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