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import subprocess
import textwrap
from amaranth.build import *
from amaranth.vendor.xilinx_spartan_3_6 import *
from .resources import *
__all__ = ["AtlysPlatform"]
class AtlysPlatform(XilinxSpartan6Platform):
"""Platform file for Digilent Atlys Spartan 6 board.
https://reference.digilentinc.com/reference/programmable-logic/atlys/start"""
device = "xc6slx45"
package = "csg324"
speed = "3"
def __init__(self, *, JP12="2V5", **kwargs):
super().__init__(**kwargs)
assert JP12 in ["2V5", "3V3"]
self._JP12 = JP12
def bank2_iostandard(self):
return "LVCMOS25" if self._JP12 == "2V5" else "LVCMOS33"
default_clk = "clk100"
default_rst = "rst"
resources = [
Resource("rst", 0, PinsN("T15", dir="i"), Attrs(IOSTANDARD=bank2_iostandard)), # RESET
Resource("clk100", 0, Pins("L15", dir="i"),
Clock(100e6), Attrs(IOSTANDARD="LVCMOS33")), # GCLK
Resource("led", 0, Pins("U18", dir="o"), Attrs(IOSTANDARD="LVCMOS33")), # LD0
Resource("led", 1, Pins("M14", dir="o"), Attrs(IOSTANDARD="LVCMOS33")), # LD1
Resource("led", 2, Pins("N14", dir="o"), Attrs(IOSTANDARD="LVCMOS33")), # LD2
Resource("led", 3, Pins("L14", dir="o"), Attrs(IOSTANDARD="LVCMOS33")), # LD3
Resource("led", 4, Pins("M13", dir="o"), Attrs(IOSTANDARD="LVCMOS33")), # LD4
Resource("led", 5, Pins("D4", dir="o"), Attrs(IOSTANDARD="LVCMOS33")), # LD5
Resource("led", 6, Pins("P16", dir="o"), Attrs(IOSTANDARD="LVCMOS33")), # LD6
Resource("led", 7, Pins("N12", dir="o"), Attrs(IOSTANDARD=bank2_iostandard)), # LD7
Resource("button", 0, Pins("N4", dir="i"), Attrs(IOSTANDARD="LVCMOS18")), # BTNU
Resource("button", 1, Pins("P4", dir="i"), Attrs(IOSTANDARD="LVCMOS18")), # BTNL
Resource("button", 2, Pins("P3", dir="i"), Attrs(IOSTANDARD="LVCMOS18")), # BTND
Resource("button", 3, Pins("F6", dir="i"), Attrs(IOSTANDARD="LVCMOS18")), # BTNR
Resource("button", 4, Pins("F5", dir="i"), Attrs(IOSTANDARD="LVCMOS18")), # BTNC
Resource("switch", 0, Pins("A10", dir="i"), Attrs(IOSTANDARD="LVCMOS33")), # SW0
Resource("switch", 1, Pins("D14", dir="i"), Attrs(IOSTANDARD="LVCMOS33")), # SW1
Resource("switch", 2, Pins("C14", dir="i"), Attrs(IOSTANDARD="LVCMOS33")), # SW2
Resource("switch", 3, Pins("P15", dir="i"), Attrs(IOSTANDARD="LVCMOS33")), # SW3
Resource("switch", 4, Pins("P12", dir="i"), Attrs(IOSTANDARD=bank2_iostandard)), # SW4
Resource("switch", 5, Pins("R5", dir="i"), Attrs(IOSTANDARD=bank2_iostandard)), # SW5
Resource("switch", 6, Pins("T5", dir="i"), Attrs(IOSTANDARD=bank2_iostandard)), # SW6
Resource("switch", 7, Pins("E4", dir="i"), Attrs(IOSTANDARD="LVCMOS18")), # SW7
UARTResource(0, rx="A16", tx="B16", attrs=Attrs(IOSTANDARD="LVCMOS33")), # J17/UART
PS2Resource(0, # PS/2 keyboard interface converted from J13 "HOST" USB connector
clk="P17", dat="N15", attrs=Attrs(IOSTANDARD="LVCMOS33")),
PS2Resource(1, # PS/2 mouse interface converted from J13 "HOST" USB connector
clk="N18", dat="P18", attrs=Attrs(IOSTANDARD="LVCMOS33")),
*SPIFlashResources(0,
cs_n="AE14", clk="AH18", copi="AF14", cipo="AF20", wp_n="AG21", hold_n="AG17",
attrs=Attrs(IOSTANDARD="LVCMOS25", SLEW="FAST"),
),
Resource("ddr2", 0,
Subsignal("clk", DiffPairs("G3", "G1", dir="o"),
Attrs(IOSTANDARD="DIFF_SSTL18_II", IN_TERM="NONE")),
Subsignal("clk_en", Pins("H7", dir="o")),
Subsignal("we", PinsN("E3", dir="o")),
Subsignal("ras", PinsN("L5", dir="o")),
Subsignal("cas", PinsN("K5", dir="o")),
Subsignal("a", Pins("J7 J6 H5 L7 F3 H4 H3 H6 D2 D1 F4 D3 G6", dir="o")),
Subsignal("ba", Pins("F2 F1 E1", dir="o")),
Subsignal("dqs", DiffPairs("P2 L4", "P1 L3", dir="o"),
Attrs(IOSTANDARD="DIFF_SSTL18_II")),
Subsignal("dq", Pins("L2 L1 K2 K1 H2 H1 J3 J1 M3 M1 N2 N1 T2 T1 U2 U1", dir="io")),
Subsignal("dm", Pins("K4 K3", dir="o")),
Subsignal("odt", Pins("K6", dir="o")),
Attrs(IOSTANDARD="SSTL18_II", SLEW="FAST"),
),
Resource("eth_gmii", 0,
Subsignal("rst", PinsN("G13", dir="o")),
Subsignal("int", PinsN("L16", dir="o")),
Subsignal("mdio", Pins("N17", dir="io")),
Subsignal("mdc", Pins("F16", dir="o")), # Max 8.3MHz
Subsignal("gtx_clk", Pins("L12", dir="o")),
Subsignal("tx_clk", Pins("K16", dir="i")),
Subsignal("tx_en", Pins("H15", dir="o")),
Subsignal("tx_er", Pins("G18", dir="o")),
Subsignal("tx_data", Pins("H16 H13 K14 K13 J13 G14 H12 K12", dir="o")),
Subsignal("rx_clk", Pins("K15", dir="i")),
Subsignal("rx_dv", Pins("F17", dir="i"), Attrs(PULLDOWN="TRUE")),
Subsignal("rx_er", Pins("F18", dir="i")),
Subsignal("rx_data", Pins("G16 H14 E16 F15 F14 E18 D16 D17", dir="i")),
Subsignal("col", Pins("C17", dir="i")),
Subsignal("crs", Pins("C18", dir="i")),
Attrs(IOSTANDARD="LVCMOS33")
),
Resource("eth_rgmii", 0,
Subsignal("rst", PinsN("G13", dir="o")),
Subsignal("int", PinsN("L16", dir="o")),
Subsignal("mdio", Pins("N17", dir="io")),
Subsignal("mdc", Pins("F16", dir="o")), # Max 8.3MHz
Subsignal("tx_clk", Pins("L12", dir="o")),
Subsignal("tx_ctl", Pins("H15", dir="o")),
Subsignal("tx_data", Pins("H16 H13 K14 K13", dir="o")),
Subsignal("rx_clk", Pins("K15", dir="i")),
Subsignal("rx_ctl", Pins("F17", dir="i"), Attrs(PULLDOWN="TRUE")),
Subsignal("rx_data", Pins("G16 H14 E16 F15", dir="i")),
Attrs(IOSTANDARD="LVCMOS33")
),
Resource("eth_mii", 0,
Subsignal("rst", PinsN("G13", dir="o")),
Subsignal("int", PinsN("L16", dir="o")),
Subsignal("mdio", Pins("N17", dir="io")),
Subsignal("mdc", Pins("F16", dir="o")), # Max 8.3MHz
Subsignal("tx_clk", Pins("K16", dir="i")),
Subsignal("tx_en", Pins("H15", dir="o")),
Subsignal("tx_er", Pins("G18", dir="o")),
Subsignal("tx_data", Pins("H16 H13 K14 K13", dir="o")),
Subsignal("rx_clk", Pins("K15", dir="i")),
Subsignal("rx_dv", Pins("F17", dir="i"), Attrs(PULLDOWN="TRUE")),
Subsignal("rx_er", Pins("F18", dir="i")),
Subsignal("rx_data", Pins("G16 H14 E16 F15", dir="i")),
Subsignal("col", Pins("C17", dir="i")),
Subsignal("crs", Pins("C18", dir="i")),
Attrs(IOSTANDARD="LVCMOS33")
),
# Device does not support RMII
Resource("eth_tbi", 0,
Subsignal("rst", PinsN("G13", dir="o")),
Subsignal("int", PinsN("L16", dir="o")),
Subsignal("mdio", Pins("N17", dir="io")),
Subsignal("mdc", Pins("F16", dir="o")), # Max 8.3MHz
Subsignal("tx_clk", Pins("L12", dir="o")),
Subsignal("tx_data", Pins("H16 H13 K14 K13 J13 G14 H12 K12 H15 G18", dir="o")),
Subsignal("rx_clk", Pins("K15 L12", dir="i")),
Subsignal("rx_data", Pins("G16 H14 E16 F15 F14 E18 D16 D17 F17 F18", dir="i")),
Subsignal("lpbk", Pins("C17", dir="o"), Attrs(PULLDOWN="TRUE")),
Subsignal("comma", Pins("C18", dir="i")),
Attrs(IOSTANDARD="LVCMOS33")
),
Resource("eth_rtbi", 0,
Subsignal("rst", PinsN("G13", dir="o")),
Subsignal("int", PinsN("L16", dir="o")),
Subsignal("mdio", Pins("N17", dir="io")),
Subsignal("mdc", Pins("F16", dir="o")), # Max 8.3MHz
Subsignal("tx_clk", Pins("L12", dir="o")),
Subsignal("tx_data", Pins("H16 H13 K14 K13 H15", dir="o")),
Subsignal("rx_clk", Pins("K15", dir="i")),
Subsignal("rx_data", Pins("G16 H14 E16 F15 F17", dir="i")),
Attrs(IOSTANDARD="LVCMOS33")
),
Resource("hdmi", 0, # J1, input only due to on board buffer, HDMI A connector
Subsignal("scl", Pins("C13"), Attrs(IOSTANDARD="I2C")),
Subsignal("sda", Pins("A13"), Attrs(IOSTANDARD="I2C")),
Subsignal("clk", DiffPairs("D11", "C11", dir="i")),
Subsignal("d", DiffPairs("G9 B11 B12", "F9 A11 A12", dir="i")),
Attrs(IOSTANDARD="TMDS_33"),
),
Resource("hdmi", 1, # J2, output only due to on board buffer, HDMI A connector
Subsignal("scl", Pins("D9"), Attrs(IOSTANDARD="I2C")),
Subsignal("sda", Pins("C9"), Attrs(IOSTANDARD="I2C")),
Subsignal("clk", DiffPairs("B6", "A6", dir="o")),
Subsignal("d", DiffPairs("D8 C7 B8", "C8 A7 A8", dir="o")),
Attrs(IOSTANDARD="TMDS_33"),
),
Resource("hdmi", 2, # J3, input only due to on board buffer, HDMI A connector
Subsignal("scl", Pins("M16"), Attrs(IOSTANDARD="I2C")),
Subsignal("sda", Pins("M18"), Attrs(IOSTANDARD="I2C")),
Subsignal("clk", DiffPairs("H17", "H18", dir="i")),
Subsignal("d", DiffPairs("K17 L17 J16", "K18 L18 J18", dir="i")),
Attrs(IOSTANDARD="TMDS_33"),
),
Resource("hdmi", 3, # JA, input/output as it is unbuffered, HDMI D connector
Subsignal("scl", Pins("C13"), Attrs(IOSTANDARD="I2C")),
Subsignal("sda", Pins("A13"), Attrs(IOSTANDARD="I2C")),
Subsignal("clk", DiffPairs("T9", "V9")),
Subsignal("d", DiffPairs("R3 T4 N5", "T3 V4 P6")),
Attrs(IOSTANDARD="TMDS_33"),
),
Resource("ac97", 0,
Subsignal("clk", Pins("L13", dir="o")),
Subsignal("sync", Pins("U17", dir="o")),
Subsignal("reset", Pins("T17", dir="o")),
Subsignal("sdo", Pins("N18", dir="o")),
Subsignal("sdi", Pins("T18", dir="i")),
Attrs(IOSTANDARD="LVCMOS33")
),
]
connectors = [
Connector("pmod", 0, "T3 R3 P6 N5 - - V9 T9 V4 T4 - -"), # JB
Connector("vhdci", 0, # JC
"U16 - U15 U13 - M11 R11 - T12 N10 - M10 U11 - R10 - - - - U10 - R8 M8 - U8 U7 - N7 T6 - R7 N6 - U5 "
"V16 - V15 V13 - N11 T11 - V12 P11 - N9 V11 - T10 - - - - V10 - T8 N8 - V8 V7 - P8 V6 - T7 P7 - V5 "
),
]
def toolchain_program(self, products, name):
with products.extract("{}.bit".format(name)) as bitfile:
cmd = textwrap.dedent("""
setMode -bscan
setCable -port auto
addDevice -p 1 -file "{}"
program -p 1
exit
""").format(bitfile).encode('utf-8')
subprocess.run(["impact", "-batch"], input=cmd, check=True)
if __name__ == "__main__":
from .test.blinky import *
AtlysPlatform().build(Blinky(), do_program=True)
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