96 lines
2.5 KiB
Python
96 lines
2.5 KiB
Python
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#
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# This file is part of LiteX-Boards.
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#
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# Copyright (c) 2022 JM Robles <roblesjm@gmail.com>
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# Copyright (c) 2021 Florent Kermarrec <florent@enjoy-digital.fr>
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# SPDX-License-Identifier: BSD-2-Clause
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from litex.build.generic_platform import *
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from litex.build.lattice import LatticePlatform
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from litex.build.lattice.programmer import IceStormProgrammer
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_io = [
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# Clock
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("clk12", 0, Pins("49"), IOStandard("LVCMOS33")),
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# Leds
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("user_leds", 0, Pins("45"), IOStandard("LVCMOS33")),
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("user_leds", 1, Pins("44"), IOStandard("LVCMOS33")),
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("user_leds", 2, Pins("43"), IOStandard("LVCMOS33")),
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("user_leds", 3, Pins("42"), IOStandard("LVCMOS33")),
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("user_leds", 4, Pins("41"), IOStandard("LVCMOS33")),
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("user_leds", 5, Pins("39"), IOStandard("LVCMOS33")),
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("user_leds", 6, Pins("38"), IOStandard("LVCMOS33")),
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("user_leds", 7, Pins("37"), IOStandard("LVCMOS33")),
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# Switches
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("sw1", 0, Pins("34"), IOStandard("LVCMOS33")),
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("sw2", 0, Pins("33"), IOStandard("LVCMOS33")),
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# Serial
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("serial", 0,
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Subsignal("rx", Pins("62"), IOStandard("LVCMOS33")),
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Subsignal("tx", Pins("61"), IOStandard("LVCMOS33")),
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),
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# SPI
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(
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"spiflash", 0,
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Subsignal("cs_n", Pins("71")),
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Subsignal("clk", Pins("70")),
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Subsignal("mosi", Pins("67")),
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Subsignal("miso", Pins("68")),
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IOStandard("LVCMOS33")
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),
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# ADC
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(
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"adc", 0,
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Subsignal("int", Pins(90)),
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Subsignal("sda", Pins(83)),
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Subsignal("scl", Pins(84)),
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IOStandard("LVCMOS33")
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)
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]
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_connectors = [
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("d0", "2"),
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("d1", "1"),
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("d2", "4"),
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("d3", "3"),
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("d4", "8"),
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("d5", "7"),
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("d6", "10"),
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("d7", "9"),
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("d8", "20"),
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("d9", "19"),
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("d10", "22"),
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("d11", "21"),
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("d12", "63"),
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("d13", "64"),
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("a0", "114"),
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("a1", "115"),
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("a2", "116"),
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("a3", "117"),
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]
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# Platform -------------------------------------------------------------------------------
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class Platform(LatticePlatform):
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default_clk_name = "clk12"
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default_clk_period = 1e9/12e6
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def __init__(self, toolchain="icestorm", **kwargs):
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LatticePlatform.__init__(self, "ice40-hx8k-tq144:4k", _io, _connectors, toolchain=toolchain, **kwargs)
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def create_programmer(self, mode="direct"):
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return IceStormProgrammer()
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def do_finalize(self, fragment):
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LatticePlatform.do_finalize(self, fragment)
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self.add_period_constraint(self.lookup_request("clk12", loose=True), 1e9/12e6)
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