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add QMTech XC7K325T board, add seven segment display to daughterboard

This commit is contained in:
Hans Baier 2023-05-08 05:41:56 +07:00
parent 187080228c
commit 550bc0eee5
3 changed files with 98 additions and 66 deletions
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58
litex_boards/platforms/qmtech_daughterboard.py
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@ -1,5 +1,63 @@
#
# This file is part of LiteX-Boards.
#
# Copyright (c) 2023 Kazumoto Kojima
# Copyright (c) 2023 Hans Baier <hansfbaier@gmail.com>
#
# SPDX-License-Identifier: BSD-2-Clause
from litex.build.generic_platform import Subsignal, Pins, IOStandard, Misc
# SevenSeg -----------------------------------------------------------------------------------------
from migen import *
from migen.genlib.misc import WaitTimer
from litex.soc.interconnect.csr import AutoCSR, CSRStorage
class SevenSeg(Module, AutoCSR):
def __init__(self, segs, sels, sys_clk_freq, period=1e-2):
self.segs = segs
self.sels = sels
n = len(sels)
self._out = CSRStorage(4*n, description="7 Seg LEDs Control.")
xdigits = Signal(4*n)
select = Signal(n)
count = Signal(max=n)
table = [
0x3f, 0x06, 0x5b, 0x4f,
0x66, 0x6d, 0x7d, 0x07,
0x7f, 0x6f, 0x77, 0x7c,
0x39, 0x5e, 0x79, 0x71
]
abcdefg = Signal(8)
hexa = Signal(4)
cases = {}
for i in range(16):
cases[i] = abcdefg.eq(table[i])
self.comb += Case(hexa, cases)
timer = WaitTimer(int(period*sys_clk_freq/(2*n)))
self.submodules += timer
self.comb += timer.wait.eq(~timer.done)
self.sync += If(timer.done,
If(count == n-1,
count.eq(0),
select.eq(1 << (n-1)),
xdigits.eq(self._out.storage)
).Else(
count.eq(count + 1),
select.eq(select >> 1),
xdigits.eq(xdigits >> 4)
)
)
self.comb += [
hexa.eq(xdigits[0:4]),
segs.eq(~abcdefg),
sels.eq(select)
]
class QMTechDaughterboard:
"""
the QMTech daughterboard contains standard peripherals

39
litex_boards/platforms/qmtech_xc7k325t.py
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@ -1,6 +1,9 @@
#
# This file is part of LiteX-Boards.
#
# Copyright (c) 2023 Kazumoto Kojima
# Copyright (c) 2023 Hans Baier <hansfbaier@gmail.com>
#
# SPDX-License-Identifier: BSD-2-Clause
from litex.build.generic_platform import Pins, Subsignal, IOStandard, Misc
@ -13,14 +16,23 @@ _io = [
# Clk / Rst
("clk50", 0, Pins("F22"), IOStandard("LVCMOS33")),
# The core board does not have a USB serial on it,
# so you will have to attach an USB to serial adapter
# on these pins
("gpio_serial", 0,
Subsignal("tx", Pins("J2:7")),
Subsignal("rx", Pins("J2:8")),
IOStandard("LVCMOS33")
),
# SPIFlash
# S25FL256L
#("spiflash4x", 0, # clock needs to be accessed through STARTUPE2
# Subsignal("cs_n", Pins("C23")),
# Subsignal("clk", Pins("C8")),
# Subsignal("dq", Pins("B24", "A25", "B22", "A22")),
# IOStandard("LVCMOS33")
#),
("spiflash4x", 0, # clock needs to be accessed through STARTUPE2
Subsignal("cs_n", Pins("C23")),
Subsignal("clk", Pins("C8")),
Subsignal("dq", Pins("B24", "A25", "B22", "A22")),
IOStandard("LVCMOS33")
),
# DDR3 SDRAM
# MT41J128M16JT-125K
@ -125,24 +137,31 @@ class Platform(XilinxPlatform):
default_clk_name = "clk50"
default_clk_period = 1e9/50e6
core_resources = [
core_resources_daughterboard = [
("onboard_led_1", 0, Pins("J26"), IOStandard("LVCMOS33")),
("onboard_led_2", 0, Pins("H26"), IOStandard("LVCMOS33")),
("cpu_reset", 0, Pins("AD21"), IOStandard("LVCMOS33")),
]
def __init__(self, toolchain="yosys+nexpnr", with_daughterboard=False):
core_resources_standalone = [
("user_led", 0, Pins("J26"), IOStandard("LVCMOS33")),
("user_led", 1, Pins("H26"), IOStandard("LVCMOS33")),
("cpu_reset", 0, Pins("AD21"), IOStandard("LVCMOS33")),
]
def __init__(self, toolchain="vivado", with_daughterboard=False):
device = "xc7k325tffg676-1"
io = _io
connectors = _connectors
io += self.core_resources
if with_daughterboard:
io += self.core_resources_daughterboard
from litex_boards.platforms.qmtech_daughterboard import QMTechDaughterboard
daughterboard = QMTechDaughterboard(IOStandard("LVCMOS33"))
io += daughterboard.io
connectors += daughterboard.connectors
else:
io += self.core_resources_standalone
XilinxPlatform.__init__(self, device, io, connectors, toolchain=toolchain)

59
litex_boards/targets/qmtech_xc7k325t.py
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@ -1,8 +1,10 @@
#!/usr/bin/env python3
#
# This file is part of LiteX-Boards.
#
# Copyright (c) 2023 Kazumoto Kojima
# Copyright (c) 2023 Hans Baier <hansfbaier@gmail.com>
#
# SPDX-License-Identifier: BSD-2-Clause
import os
@ -25,55 +27,6 @@ from litedram.phy import s7ddrphy
from liteeth.phy.mii import LiteEthPHYMII
# SevenSeg -----------------------------------------------------------------------------------------
from migen.genlib.misc import WaitTimer
from litex.soc.interconnect.csr import *
class SevenSeg(Module, AutoCSR):
def __init__(self, segs, sels, sys_clk_freq, period=1e-2):
self.segs = segs
self.sels = sels
n = len(sels)
self._out = CSRStorage(4*n, description="7 Seg LEDs Control.")
xdigits = Signal(4*n)
select = Signal(n)
count = Signal(max=n)
table = [
0x3f, 0x06, 0x5b, 0x4f,
0x66, 0x6d, 0x7d, 0x07,
0x7f, 0x6f, 0x77, 0x7c,
0x39, 0x5e, 0x79, 0x71
]
abcdefg = Signal(8)
hexa = Signal(4)
cases = {}
for i in range(16):
cases[i] = abcdefg.eq(table[i])
self.comb += Case(hexa, cases)
timer = WaitTimer(int(period*sys_clk_freq/(2*n)))
self.submodules += timer
self.comb += timer.wait.eq(~timer.done)
self.sync += If(timer.done,
If(count == n-1,
count.eq(0),
select.eq(1 << (n-1)),
xdigits.eq(self._out.storage)
).Else(
count.eq(count + 1),
select.eq(select >> 1),
xdigits.eq(xdigits >> 4)
)
)
self.comb += [
hexa.eq(xdigits[0:4]),
segs.eq(~abcdefg),
sels.eq(select)
]
# CRG ----------------------------------------------------------------------------------------------
class _CRG(Module):
@ -112,7 +65,7 @@ class _CRG(Module):
# BaseSoC ------------------------------------------------------------------------------------------
class BaseSoC(SoCCore):
def __init__(self, toolchain="yosys+nextpnr", sys_clk_freq=int(100e6), with_daughterboard=False,
def __init__(self, toolchain="vivado", sys_clk_freq=int(100e6), with_daughterboard=False,
with_ethernet=False, with_etherbone=False, eth_ip="192.168.1.50", eth_dynamic_ip=False,
local_ip="", remote_ip="",
with_led_chaser=True, with_video_terminal=False, with_video_framebuffer=False, with_video_colorbars=False,
@ -198,6 +151,8 @@ class BaseSoC(SoCCore):
pads = platform.request_all("user_led"),
sys_clk_freq = sys_clk_freq)
if (with_daughterboard):
from litex_boards.platforms.qmtech_daughterboard import SevenSeg
self.submodules.sevenseg = SevenSeg(
segs = platform.request_all("seven_seg"),
sels = platform.request_all("seven_seg_ctl"),
@ -210,7 +165,7 @@ class BaseSoC(SoCCore):
def main():
parser = argparse.ArgumentParser(description="LiteX SoC on QMTech XC7K325T")
parser.add_argument("--toolchain", default="yosys+nextpnr", help="FPGA toolchain (vivado, symbiflow or yosys+nextpnr).")
parser.add_argument("--toolchain", default="vivado", help="FPGA toolchain (vivado, symbiflow or yosys+nextpnr).")
parser.add_argument("--build", action="store_true", help="Build bitstream.")
parser.add_argument("--load", action="store_true", help="Load bitstream.")
parser.add_argument("--sys-clk-freq", default=100e6, help="System clock frequency.")