litex-boards/litex_boards/platforms/fomu_pvt.py

69 lines
2.4 KiB
Python

# This file is Copyright (c) 2019 Tom Keddie <git@bronwenandtom.com>
# License: BSD
# Fomu PVT board:
# - Crowd Supply campaign: https://www.crowdsupply.com/sutajio-kosagi/fomu
# - Design files: https://github.com/im-tomu/fomu-hardware/tree/pvt/hardware/pcb
from litex.build.generic_platform import *
from litex.build.lattice import LatticePlatform
from litex.build.lattice.programmer import IceStormProgrammer
# IOs ----------------------------------------------------------------------------------------------
_io = [
("clk48", 0, Pins("F4"), IOStandard("LVCMOS33")),
("user_led_n", 0, Pins("A5"), IOStandard("LVCMOS33")),
("rgb_led", 0,
Subsignal("r", Pins("C5")),
Subsignal("g", Pins("B5")),
Subsignal("b", Pins("A5")),
IOStandard("LVCMOS33")
),
("user_touch_n", 0, Pins("E4"), IOStandard("LVCMOS33")),
("user_touch_n", 1, Pins("D5"), IOStandard("LVCMOS33")),
("user_touch_n", 2, Pins("E5"), IOStandard("LVCMOS33")),
("user_touch_n", 3, Pins("F5"), IOStandard("LVCMOS33")),
("usb", 0,
Subsignal("d_p", Pins("A1")),
Subsignal("d_n", Pins("A2")),
Subsignal("pullup", Pins("A4")),
IOStandard("LVCMOS33")
),
("spiflash", 0,
Subsignal("cs_n", Pins("C1"), IOStandard("LVCMOS33")),
Subsignal("clk", Pins("D1"), IOStandard("LVCMOS33")),
Subsignal("mosi", Pins("F1"), IOStandard("LVCMOS33")),
Subsignal("miso", Pins("E1"), IOStandard("LVCMOS33")),
Subsignal("wp", Pins("F2"), IOStandard("LVCMOS33")),
Subsignal("hold", Pins("B1"), IOStandard("LVCMOS33")),
),
("spiflash4x", 0,
Subsignal("cs_n", Pins("C1"), IOStandard("LVCMOS33")),
Subsignal("clk", Pins("D1"), IOStandard("LVCMOS33")),
Subsignal("dq", Pins("F1 E1 F2 B1"), IOStandard("LVCMOS33")),
),
]
# Connectors ---------------------------------------------------------------------------------------
_connectors = [
("touch_pins", "E4 D5 E5 F5"),
]
# Platform -----------------------------------------------------------------------------------------
class Platform(LatticePlatform):
default_clk_name = "clk48"
default_clk_period = 1e9/48e6
def __init__(self):
LatticePlatform.__init__(self, "ice40-up5k-uwg30", _io, _connectors, toolchain="icestorm")
def create_programmer(self):
return IceStormProgrammer()