116 lines
4.1 KiB
Python
116 lines
4.1 KiB
Python
#
|
|
# This file is part of LiteX-Boards.
|
|
#
|
|
# Copyright (c) 2021 Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
|
|
# SPDX-License-Identifier: BSD-2-Clause
|
|
|
|
from migen import *
|
|
|
|
from litex.build.generic_platform import *
|
|
from litex.build.gowin.platform import GowinPlatform
|
|
from litex.build.openfpgaloader import OpenFPGALoader
|
|
|
|
# IOs ----------------------------------------------------------------------------------------------
|
|
|
|
_io = [
|
|
# Clk / Rst
|
|
("clk12", 0, Pins("4"), IOStandard("LVCMOS33")),
|
|
|
|
# Leds
|
|
("user_led", 0, Pins("23"), IOStandard("LVCMOS33")),
|
|
("user_led", 1, Pins("24"), IOStandard("LVCMOS33")),
|
|
("user_led", 2, Pins("25"), IOStandard("LVCMOS33")),
|
|
("user_led", 3, Pins("26"), IOStandard("LVCMOS33")),
|
|
("user_led", 4, Pins("27"), IOStandard("LVCMOS33")),
|
|
("user_led", 5, Pins("28"), IOStandard("LVCMOS33")),
|
|
("user_led", 6, Pins("29"), IOStandard("LVCMOS33")),
|
|
("user_led", 7, Pins("30"), IOStandard("LVCMOS33")),
|
|
|
|
# RGB led, active-low
|
|
("rgb_led", 0,
|
|
Subsignal("r", Pins("112")),
|
|
Subsignal("g", Pins("114")),
|
|
Subsignal("b", Pins("113")),
|
|
IOStandard("LVCMOS33"),
|
|
),
|
|
("rgb_led", 1,
|
|
Subsignal("r", Pins("106")),
|
|
Subsignal("g", Pins("111")),
|
|
Subsignal("b", Pins("110")),
|
|
IOStandard("LVCMOS33"),
|
|
),
|
|
("rgb_led", 2,
|
|
Subsignal("r", Pins("101")),
|
|
Subsignal("g", Pins("104")),
|
|
Subsignal("b", Pins("102")),
|
|
IOStandard("LVCMOS33"),
|
|
),
|
|
("rgb_led", 3,
|
|
Subsignal("r", Pins("98")),
|
|
Subsignal("g", Pins("100")),
|
|
Subsignal("b", Pins("99")),
|
|
IOStandard("LVCMOS33"),
|
|
),
|
|
|
|
# Switches
|
|
("user_sw", 0, Pins("75"), IOStandard("LVCMOS33")),
|
|
("user_sw", 1, Pins("76"), IOStandard("LVCMOS33")),
|
|
("user_sw", 2, Pins("78"), IOStandard("LVCMOS33")),
|
|
("user_sw", 3, Pins("79"), IOStandard("LVCMOS33")),
|
|
("user_sw", 4, Pins("80"), IOStandard("LVCMOS33")),
|
|
("user_sw", 5, Pins("81"), IOStandard("LVCMOS33")),
|
|
("user_sw", 6, Pins("82"), IOStandard("LVCMOS33")),
|
|
("user_sw", 7, Pins("83"), IOStandard("LVCMOS33")),
|
|
|
|
# Buttons.
|
|
("user_btn", 0, Pins("58"), IOStandard("LVCMOS33")),
|
|
("user_btn", 1, Pins("59"), IOStandard("LVCMOS33")),
|
|
("user_btn", 2, Pins("60"), IOStandard("LVCMOS33")),
|
|
("user_btn", 3, Pins("61"), IOStandard("LVCMOS33")),
|
|
("user_btn", 4, Pins("62"), IOStandard("LVCMOS33")),
|
|
("user_btn", 5, Pins("63"), IOStandard("LVCMOS33")),
|
|
("user_btn", 6, Pins("64"), IOStandard("LVCMOS33")),
|
|
("user_btn", 7, Pins("65"), IOStandard("LVCMOS33")),
|
|
|
|
# Serial.
|
|
# FT232H has only one interface -> use (arbitrary) two pins from J2 to
|
|
# connect an external USB<->serial adapter
|
|
("serial", 0,
|
|
Subsignal("tx", Pins("116")), # J2.17
|
|
Subsignal("rx", Pins("115")), # J2.18
|
|
IOStandard("LVCMOS33")
|
|
),
|
|
|
|
# Seven Segment
|
|
("seven_seg_dig", 0, Pins("137"), IOStandard("LVCMOS33")),
|
|
("seven_seg_dig", 1, Pins("140"), IOStandard("LVCMOS33")),
|
|
("seven_seg_dig", 2, Pins("141"), IOStandard("LVCMOS33")),
|
|
("seven_seg_dig", 3, Pins("7"), IOStandard("LVCMOS33")),
|
|
("seven_seg", 0, Pins("138 142 9 11 12 139 8 10"), IOStandard("LVCMOS33")),
|
|
|
|
]
|
|
|
|
# Connectors ---------------------------------------------------------------------------------------
|
|
|
|
_connectors = [
|
|
["J1", "- 38 39 40 41 42 43 44 66 67 68 69 70 71 72 96 95 94 93 -"],
|
|
["J2", "- 136 135 134 133 132 131 130 129 128 123 122 121 120 119 118 117 116 115 -"],
|
|
]
|
|
|
|
# Platform -----------------------------------------------------------------------------------------
|
|
|
|
class Platform(GowinPlatform):
|
|
default_clk_name = "clk12"
|
|
default_clk_period = 1e9/12e6
|
|
|
|
def __init__(self):
|
|
GowinPlatform.__init__(self, "GW1N-UV4LQ144C6/I5", _io, _connectors, toolchain="gowin", devicename="GW1N-4")
|
|
self.toolchain.options["use_mspi_as_gpio"] = 1
|
|
|
|
def create_programmer(self):
|
|
return OpenFPGALoader("runber")
|
|
|
|
def do_finalize(self, fragment):
|
|
GowinPlatform.do_finalize(self, fragment)
|
|
self.add_period_constraint(self.lookup_request("clk12", loose=True), 1e9/12e6)
|