# # This file is part of LiteX-Boards. # # Copyright (c) 2020 Greg Davill # SPDX-License-Identifier: BSD-2-Clause from litex.build.generic_platform import * from litex.build.lattice import LatticePlatform from litex.build.dfu import DFUProg # IOs ---------------------------------------------------------------------------------------------- _io_r0_1 = [ # Clk / Rst ("clk48", 0, Pins("A9"), IOStandard("LVCMOS33")), ("rst_n", 0, Pins("R16"), IOStandard("LVCMOS33")), # Leds ("user_led", 0, Pins("V17"), IOStandard("LVCMOS33")), # rgb_led.r ("user_led", 1, Pins("T17"), IOStandard("LVCMOS33")), # rgb_led.g ("user_led", 2, Pins("J3"), IOStandard("LVCMOS33")), # rgb_led.b ("rgb_led", 0, Subsignal("r", Pins("V17"), IOStandard("LVCMOS33")), Subsignal("g", Pins("T17"), IOStandard("LVCMOS33")), Subsignal("b", Pins("J3"), IOStandard("LVCMOS33")), ), # DDR3 SDRAM ("ddram", 0, Subsignal("a", Pins( "A4 D2 C3 C7 D3 D4 D1 B2", "C1 A2 A7 C2 C4"), IOStandard("SSTL135_I")), Subsignal("ba", Pins("B6 B7 A6"), IOStandard("SSTL135_I")), Subsignal("ras_n", Pins("C12"), IOStandard("SSTL135_I")), Subsignal("cas_n", Pins("D13"), IOStandard("SSTL135_I")), Subsignal("we_n", Pins("B12"), IOStandard("SSTL135_I")), Subsignal("cs_n", Pins("A12"), IOStandard("SSTL135_I")), Subsignal("dm", Pins("D16 G16"), IOStandard("SSTL135_I")), Subsignal("dq", Pins( "C17 D15 B17 C16 A15 B13 A17 A13", "F17 F16 G15 F15 J16 C18 H16 F18"), IOStandard("SSTL135_I"), Misc("TERMINATION=75")), Subsignal("dqs_p", Pins("B15 G18"), IOStandard("SSTL135D_I"), Misc("TERMINATION=OFF DIFFRESISTOR=100")), Subsignal("clk_p", Pins("J18"), IOStandard("SSTL135D_I")), Subsignal("cke", Pins("D6"), IOStandard("SSTL135_I")), Subsignal("odt", Pins("C13"), IOStandard("SSTL135_I")), Subsignal("reset_n", Pins("B1"), IOStandard("SSTL135_I")), Misc("SLEWRATE=FAST") ), # USB ("usb", 0, Subsignal("d_p", Pins("N1")), Subsignal("d_n", Pins("M2")), Subsignal("pullup", Pins("N2")), IOStandard("LVCMOS33") ), # SPIFlash ("spiflash4x", 0, Subsignal("cs_n", Pins("U17")), #Subsignal("clk", Pins("U16")), Subsignal("dq", Pins("U18 T18 R18 N18")), IOStandard("LVCMOS33") ), # SPI ("spi-internal", 0, Subsignal("cs_n", Pins("B11"), Misc("PULLMODE=UP")), Subsignal("clk", Pins("C11")), Subsignal("miso", Pins("A11"), Misc("PULLMODE=UP")), Subsignal("mosi", Pins("A10"), Misc("PULLMODE=UP")), Misc("SLEWRATE=SLOW"), IOStandard("LVCMOS33"), ), # SDCard ("spisdcard", 0, Subsignal("clk", Pins("K1")), Subsignal("mosi", Pins("K2"), Misc("PULLMODE=UP")), Subsignal("cs_n", Pins("M1"), Misc("PULLMODE=UP")), Subsignal("miso", Pins("J1"), Misc("PULLMODE=UP")), Misc("SLEW=FAST"), IOStandard("LVCMOS33"), ), ] _io_r0_2 = [ # Clk / Rst ("clk48", 0, Pins("A9"), IOStandard("LVCMOS33")), ("rst_n", 0, Pins("V17"), IOStandard("LVCMOS33")), # Buttons ("usr_btn", 0, Pins("J17"), IOStandard("SSTL135_I")), # Leds ("user_led", 0, Pins("K4"), IOStandard("LVCMOS33")), # rgb_led.r ("user_led", 1, Pins("M3"), IOStandard("LVCMOS33")), # rgb_led.g ("user_led", 2, Pins("J3"), IOStandard("LVCMOS33")), # rgb_led.b ("rgb_led", 0, Subsignal("r", Pins("K4"), IOStandard("LVCMOS33")), Subsignal("g", Pins("M3"), IOStandard("LVCMOS33")), Subsignal("b", Pins("J3"), IOStandard("LVCMOS33")), ), # DDR3 SDRAM ("ddram", 0, Subsignal("a", Pins( "C4 D2 D3 A3 A4 D4 C3 B2", "B1 D1 A7 C2 B6 C1 A2 C7"), IOStandard("SSTL135_I")), Subsignal("ba", Pins("D6 B7 A6"), IOStandard("SSTL135_I"),), Subsignal("ras_n", Pins("C12"), IOStandard("SSTL135_I")), Subsignal("cas_n", Pins("D13"), IOStandard("SSTL135_I")), Subsignal("we_n", Pins("B12"), IOStandard("SSTL135_I")), Subsignal("cs_n", Pins("A12"), IOStandard("SSTL135_I")), Subsignal("dm", Pins("D16 G16"), IOStandard("SSTL135_I")), Subsignal("dq", Pins( "C17 D15 B17 C16 A15 B13 A17 A13", "F17 F16 G15 F15 J16 C18 H16 F18"), IOStandard("SSTL135_I"), Misc("TERMINATION=OFF")), # Misc("TERMINATION=75") Disabled to reduce heat Subsignal("dqs_p", Pins("B15 G18"), IOStandard("SSTL135D_I"), Misc("TERMINATION=OFF"), Misc("DIFFRESISTOR=100")), Subsignal("clk_p", Pins("J18"), IOStandard("SSTL135D_I")), Subsignal("cke", Pins("D18"), IOStandard("SSTL135_I")), Subsignal("odt", Pins("C13"), IOStandard("SSTL135_I")), Subsignal("reset_n", Pins("L18"), IOStandard("SSTL135_I")), Subsignal("vccio", Pins("K16 D17 K15 K17 B18 C6"), IOStandard("SSTL135_II")), Subsignal("gnd", Pins("L15 L16"), IOStandard("SSTL135_II")), Misc("SLEWRATE=FAST") ), # USB ("usb", 0, Subsignal("d_p", Pins("N1")), Subsignal("d_n", Pins("M2")), Subsignal("pullup", Pins("N2")), IOStandard("LVCMOS33") ), # SPIFlash ("spiflash4x", 0, Subsignal("cs_n", Pins("U17"), IOStandard("LVCMOS33")), #Subsignal("clk", Pins("U16"), IOStandard("LVCMOS33")), Subsignal("dq", Pins("U18 T18 R18 N18"), IOStandard("LVCMOS33")), ), ("spiflash", 0, Subsignal("cs_n", Pins("U17"), IOStandard("LVCMOS33")), #Subsignal("clk", Pins("U16"), IOStandard("LVCMOS33")), # Note: CLK is bound using USRMCLK block Subsignal("miso", Pins("T18"), IOStandard("LVCMOS33")), Subsignal("mosi", Pins("U18"), IOStandard("LVCMOS33")), Subsignal("wp", Pins("R18"), IOStandard("LVCMOS33")), Subsignal("hold", Pins("N18"), IOStandard("LVCMOS33")), ), # SDCard ("spisdcard", 0, Subsignal("clk", Pins("K1")), Subsignal("mosi", Pins("K2"), Misc("PULLMODE=UP")), Subsignal("cs_n", Pins("M1"), Misc("PULLMODE=UP")), Subsignal("miso", Pins("J1"), Misc("PULLMODE=UP")), Misc("SLEW=FAST"), IOStandard("LVCMOS33"), ), ("sdcard", 0, Subsignal("clk", Pins("K1")), Subsignal("cmd", Pins("K2"), Misc("PULLMODE=UP")), Subsignal("data", Pins("J1 K3 L3 M1"), Misc("PULLMODE=UP")), IOStandard("LVCMOS33"), Misc("SLEW=FAST") ), ] # Connectors --------------------------------------------------------------------------------------- _connectors_r0_1 = [ # Feather 0.1" Header Pin Numbers, # Note: Pin nubering is not continuous. ("GPIO", "N17 M18 C10 C9 - B10 B9 - - C8 B8 A8 H2 J2 N15 R17 N16 - - - - - - - -"), ] _connectors_r0_2 = [ # Feather 0.1" Header Pin Numbers, # Note: Pin nubering is not continuous. ("GPIO", "N17 M18 C10 C9 - B10 B9 - - C8 B8 A8 H2 J2 N15 R17 N16 - L4 N3 N4 H4 G4 T17"), ] # Standard Feather Pins feather_serial = [ ("serial", 0, Subsignal("tx", Pins("GPIO:1"), IOStandard("LVCMOS33")), Subsignal("rx", Pins("GPIO:0"), IOStandard("LVCMOS33")) ) ] feather_i2c = [ ("i2c", 0, Subsignal("sda", Pins("GPIO:2"), IOStandard("LVCMOS33")), Subsignal("scl", Pins("GPIO:3"), IOStandard("LVCMOS33")) ) ] feather_spi = [ ("spi",0, Subsignal("miso", Pins("GPIO:14"), IOStandard("LVCMOS33")), Subsignal("mosi", Pins("GPIO:16"), IOStandard("LVCMOS33")), Subsignal("sck", Pins("GPIO:15"), IOStandard("LVCMOS33")) ) ] # Platform ----------------------------------------------------------------------------------------- class Platform(LatticePlatform): default_clk_name = "clk48" default_clk_period = 1e9/48e6 def __init__(self, revision="0.2", device="25F", **kwargs): assert revision in ["0.1", "0.2"] self.revision = revision io = {"0.1": _io_r0_1, "0.2": _io_r0_2 }[revision] connectors = {"0.1": _connectors_r0_1, "0.2": _connectors_r0_2}[revision] LatticePlatform.__init__(self, f"LFE5U-{device}-8MG285C", io, connectors, **kwargs) def create_programmer(self): return DFUProg(vid="1209", pid="5af0") def do_finalize(self, fragment): LatticePlatform.do_finalize(self, fragment) self.add_period_constraint(self.lookup_request("clk48", loose=True), 1e9/48e6)