nmigen_boards/ice40_hx8k_b_evn.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__ = ["ICE40HX8KBEVNPlatform"]
  10
  11
  12 class ICE40HX8KBEVNPlatform(LatticeICE40Platform):
  13     device      = "iCE40HX8K"
  14     package     = "CT256"
  15     default_clk = "clk12"
  16     resources   = [
  17         Resource("clk12", 0, Pins("J3", dir="i"),
  18                  Clock(12e6), Attrs(GLOBAL=True, IO_STANDARD="SB_LVCMOS")),
  19
  20         *LEDResources(
  21             pins="C3 B3 C4 C5 A1 A2 B4 B5",
  22             attrs=Attrs(IO_STANDARD="SB_LVCMOS")
  23         ), # D2..D9
  24
  25         UARTResource(0,
  26             rx="B10", tx="B12", rts="A15", cts="B13", dtr="B14", dsr="A16", dcd="B15",
  27             attrs=Attrs(IO_STANDARD="SB_LVCMOS", PULLUP=1)
  28         ),
  29
  30         *SPIFlashResources(0,
  31             cs="R12", clk="R11", mosi="P12", miso="P11",
  32             attrs=Attrs(IO_STANDARD="SB_LVCMOS")
  33         ),
  34     ]
  35     connectors  = [
  36         Connector("j", 1, # J1
  37             "A16 -   A15 B15 B13 B14 -   -   B12 B11 "
  38             "A11 B10 A10 C9  -   -   A9  B9  B8  A7  "
  39             "B7  C7  -   -   A6  C6  B6  C5  A5  C4  "
  40             "-   -   B5  C3  B4  B3  A2  A1  -   -   "),
  41         Connector("j", 2, # J2
  42             "-   -   -   R15 P16 P15 -   -   N16 M15 "
  43             "M16 L16 K15 K16 -   -   K14 J14 G14 F14 "
  44             "J15 H14 -   -   H16 G15 G16 F15 F16 E14 "
  45             "-   -   E16 D15 D16 D14 C16 B16 -   -   "),
  46         Connector("j", 3, # J3
  47             "R16 -   T15 T16 T13 T14 -   -   N12 P13 "
  48             "N10 M11 T11 P10 -   -   T10 R10 P8  P9  "
  49             "T9  R9  -   -   T7  T8  T6  R6  T5  R5  "
  50             "-   -   R3  R4  R2  T3  T1  T2  -   -   "),
  51         Connector("j", 4, # J4
  52             "-   -   -   R1  P1  P2  -   -   N3  N2  "
  53             "M2  M1  L3  L1  -   -   K3  K1  J2  J1  "
  54             "H2  J3  -   -   G2  H1  F2  G1  E2  F1  "
  55             "-   -   D1  D2  C1  C2  B1  B2  -   -   "),
  56     ]
  57
  58     def toolchain_program(self, products, name):
  59         iceprog = os.environ.get("ICEPROG", "iceprog")
  60         with products.extract("{}.bin".format(name)) as bitstream_filename:
  61             # TODO: this should be factored out and made customizable
  62             subprocess.check_call([iceprog, "-S", bitstream_filename])
  63
  64
  65 if __name__ == "__main__":
  66     from .test.blinky import *
  67     ICE40HX8KBEVNPlatform().build(Blinky(), do_program=True)