From 7e1df951ba0fce50cc725ade10dc05130fdd3ab7 Mon Sep 17 00:00:00 2001 From: Florent Kermarrec Date: Mon, 30 Nov 2015 20:25:00 +0100 Subject: [PATCH] boards/platforms: add nexys_video (basic) --- litex/boards/platforms/nexys_video.py | 76 +++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 litex/boards/platforms/nexys_video.py diff --git a/litex/boards/platforms/nexys_video.py b/litex/boards/platforms/nexys_video.py new file mode 100644 index 000000000..4c05c3c8c --- /dev/null +++ b/litex/boards/platforms/nexys_video.py @@ -0,0 +1,76 @@ +# This file is Copyright (c) 2015 Florent Kermarrec +# License: BSD + +from litex.build.generic_platform import * +from litex.build.xilinx import XilinxPlatform, XC3SProg, VivadoProgrammer + +_io = [ + ("user_led", 0, Pins("T14"), IOStandard("LVCMOS25")), + ("user_led", 1, Pins("T15"), IOStandard("LVCMOS25")), + ("user_led", 2, Pins("T16"), IOStandard("LVCMOS25")), + ("user_led", 3, Pins("U16"), IOStandard("LVCMOS25")), + ("user_led", 4, Pins("V15"), IOStandard("LVCMOS25")), + ("user_led", 5, Pins("W16"), IOStandard("LVCMOS25")), + ("user_led", 6, Pins("W15"), IOStandard("LVCMOS25")), + ("user_led", 7, Pins("Y13"), IOStandard("LVCMOS25")), + + ("user_sw", 0, Pins("E22"), IOStandard("LVCMOS12")), + ("user_sw", 1, Pins("F21"), IOStandard("LVCMOS12")), + ("user_sw", 2, Pins("G21"), IOStandard("LVCMOS12")), + ("user_sw", 3, Pins("G22"), IOStandard("LVCMOS12")), + ("user_sw", 4, Pins("H17"), IOStandard("LVCMOS12")), + ("user_sw", 5, Pins("J16"), IOStandard("LVCMOS12")), + ("user_sw", 6, Pins("K13"), IOStandard("LVCMOS12")), + ("user_sw", 7, Pins("M17"), IOStandard("LVCMOS12")), + + + ("user_btn", 0, Pins("B22"), IOStandard("LVCMOS12")), + ("user_btn", 1, Pins("D22"), IOStandard("LVCMOS12")), + ("user_btn", 2, Pins("C22"), IOStandard("LVCMOS12")), + ("user_btn", 3, Pins("D14"), IOStandard("LVCMOS12")), + ("user_btn", 4, Pins("F15"), IOStandard("LVCMOS12")), + ("user_btn", 5, Pins("G4"), IOStandard("LVCMOS12")), + + ("oled", 0, + Subsignal("dc", Pins("W22")), + Subsignal("res", Pins("U21")), + Subsignal("sclk", Pins("W21")), + Subsignal("sdin", Pins("Y22")), + Subsignal("vbat", Pins("P20")), + Subsignal("vdd", Pins("V22")), + IOStandard("LVCMOS33") + ), + + ("clk100", 0, Pins("R4"), IOStandard("LVCMOS33")), + + ("serial", 0, + Subsignal("tx", Pins("AA19")), + Subsignal("rx", Pins("V18")), + IOStandard("LVCMOS33"), + ) +] + + +class Platform(XilinxPlatform): + default_clk_name = "clk100" + default_clk_period = 10.0 + + def __init__(self, toolchain="vivado", programmer="vivado"): + XilinxPlatform.__init__(self, "xc7a200t-sbg484-1", _io, + toolchain=toolchain) + self.toolchain.bitstream_commands = \ + ["set_property BITSTREAM.CONFIG.SPI_BUSWIDTH 4 [current_design]"] + self.toolchain.additional_commands = \ + ["write_cfgmem -force -format bin -interface spix4 -size 16 " + "-loadbit \"up 0x0 {build_name}.bit\" -file {build_name}.bin"] + self.programmer = programmer + self.add_platform_command("set_property INTERNAL_VREF 0.675 [get_iobanks 34]") + + def create_programmer(self): + if self.programmer == "xc3sprog": + return XC3SProg("nexys4") + elif self.programmer == "vivado": + return VivadoProgrammer(flash_part="n25q128-3.3v-spi-x1_x2_x4") + else: + raise ValueError("{} programmer is not supported" + .format(self.programmer))