nmigen_boards/icebreaker.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
   8
   9 __all__ = ["ICEBreakerPlatform"]
  10
  11
  12 class ICEBreakerPlatform(LatticeICE40Platform):
  13     device      = "iCE40UP5K"
  14     package     = "SG48"
  15     default_clk = "clk12"
  16     resources   = [
  17         Resource("clk12", 0, Pins("35", dir="i"),
  18                  Clock(12e6), Attrs(GLOBAL=True, IO_STANDARD="SB_LVCMOS33")),
  19
  20         Resource("user_led",  0, PinsN("11", dir="o"), Attrs(IO_STANDARD="SB_LVCMOS33")),
  21         Resource("user_led",  1, PinsN("37", dir="o"), Attrs(IO_STANDARD="SB_LVCMOS33")),
  22         # Color-specific aliases
  23         Resource("user_ledr", 0, PinsN("11", dir="o"), Attrs(IO_STANDARD="SB_LVCMOS33")),
  24         Resource("user_ledg", 0, PinsN("37", dir="o"), Attrs(IO_STANDARD="SB_LVCMOS33")),
  25
  26         Resource("user_btn",  0, PinsN("10", dir="i"), Attrs(IO_STANDARD="SB_LVCMOS33")),
  27
  28         UARTResource(0,
  29             rx="6", tx="9",
  30             attrs=Attrs(IO_STANDARD="SB_LVTTL", PULLUP=1)
  31         ),
  32
  33         *SPIFlashResources(0,
  34             cs="16", clk="15", mosi="14", miso="17", wp="12", hold="13",
  35             attrs=Attrs(IO_STANDARD="SB_LVCMOS33")
  36         ),
  37     ]
  38     connectors = [
  39         Connector("pmod", 0, " 4  2 47 45 - -  3 48 46 44 - -"),  # PMOD1A
  40         Connector("pmod", 1, "43 38 34 31 - - 42 36 32 28 - -"), # PMOD1B
  41         Connector("pmod", 2, "27 25 21 19 - - 26 23 20 18 - -"), # PMOD2
  42     ]
  43     # The attached LED/button section can be either used standalone or as a PMOD.
  44     # Attach to platform using:
  45     # p.add_resources(p.break_off_pmod)
  46     # pmod_btn = plat.request("user_btn")
  47     break_off_pmod = [
  48          Resource("user_btn", 1, Pins("9", dir="i", conn=("pmod", 2)),
  49                   Attrs(IO_STANDARD="SB_LVCMOS33")),
  50          Resource("user_btn", 2, Pins("4", dir="i", conn=("pmod", 2)),
  51                   Attrs(IO_STANDARD="SB_LVCMOS33")),
  52          Resource("user_btn", 3, Pins("10", dir="i", conn=("pmod", 2)),
  53                   Attrs(IO_STANDARD="SB_LVCMOS33")),
  54
  55          Resource("user_led", 2, Pins("7", dir="o", conn=("pmod", 2)),
  56                   Attrs(IO_STANDARD="SB_LVCMOS33")),
  57          Resource("user_led", 3, Pins("1", dir="o", conn=("pmod", 2)),
  58                   Attrs(IO_STANDARD="SB_LVCMOS33")),
  59          Resource("user_led", 4, Pins("2", dir="o", conn=("pmod", 2)),
  60                   Attrs(IO_STANDARD="SB_LVCMOS33")),
  61          Resource("user_led", 5, Pins("8", dir="o", conn=("pmod", 2)),
  62                   Attrs(IO_STANDARD="SB_LVCMOS33")),
  63          Resource("user_led", 6, Pins("3", dir="o", conn=("pmod", 2)),
  64                   Attrs(IO_STANDARD="SB_LVCMOS33")),
  65
  66          # Color-specific aliases
  67          Resource("user_ledr", 1, Pins("7", dir="o", conn=("pmod", 2)),
  68                   Attrs(IO_STANDARD="SB_LVCMOS33")),
  69          Resource("user_ledg", 1, Pins("1", dir="o", conn=("pmod", 2)),
  70                   Attrs(IO_STANDARD="SB_LVCMOS33")),
  71          Resource("user_ledg", 2, Pins("2", dir="o", conn=("pmod", 2)),
  72                   Attrs(IO_STANDARD="SB_LVCMOS33")),
  73          Resource("user_ledg", 3, Pins("8", dir="o", conn=("pmod", 2)),
  74                   Attrs(IO_STANDARD="SB_LVCMOS33")),
  75          Resource("user_ledg", 4, Pins("3", dir="o", conn=("pmod", 2)),
  76                   Attrs(IO_STANDARD="SB_LVCMOS33"))
  77     ]
  78
  79     def toolchain_program(self, products, name):
  80         iceprog = os.environ.get("ICEPROG", "iceprog")
  81         with products.extract("{}.bin".format(name)) as bitstream_filename:
  82             subprocess.check_call([iceprog, bitstream_filename])
  83
  84
  85 if __name__ == "__main__":
  86     from ._blinky import Blinky
  87     p = ICEBreakerPlatform()
  88     p.add_resources(p.break_off_pmod)
  89     p.build(Blinky(), do_program=True)