1 files changed, 127 insertions, 0 deletions
diff --git a/nmigen_boards/orangecrab_r0_1.py b/nmigen_boards/orangecrab_r0_1.py
new file mode 100644
index 0000000..d9964d3
--- /dev/null
+++ b/nmigen_boards/orangecrab_r0_1.py
@@ -0,0 +1,127 @@
+import os
+import subprocess
+import shutil
+
+from nmigen.build import *
+from nmigen.vendor.lattice_ecp5 import *
+from .resources import *
+
+
+__all__ = ["OrangeCrabR0_1Platform"]
+
+
+class OrangeCrabR0_1Platform(LatticeECP5Platform):
+    device      = "LFE5U-25F"
+    package     = "MG285"
+    speed       = "8"
+    default_clk = "clk"
+    resources   = [
+        Resource("clk", 0, Pins("A9", dir="i"),
+                 Clock(48e6), Attrs(IO_TYPE="LVCMOS33")),
+
+        # Used to reload FPGA configuration.
+        # Can enter USB bootloader by assigning button 0 to program.
+        Resource("program", 0, PinsN("V17", dir="o"), Attrs(IO_TYPE="LVCMOS33")),
+
+        RGBLEDResource(0,
+            r="V17", g="T17", b="J3", invert=True,
+            attrs=Attrs(IO_TYPE="LVCMOS33")),
+
+        *SPIFlashResources(0,
+            cs="U17", clk="U16", miso="T18", mosi="U18", wp="R18", hold="N18",
+            attrs=Attrs(IO_TYPE="LVCMOS33"),
+        ),
+
+        Resource("ddr3", 0,
+            Subsignal("rst",     PinsN("B1", dir="o")),
+            Subsignal("clk",     DiffPairs("J18", "K18", dir="o"), Attrs(IO_TYPE="SSTL135D_I")),
+            Subsignal("clk_en",  Pins("D6", dir="o")),
+            Subsignal("cs",      PinsN("A12", dir="o")),
+            Subsignal("we",      PinsN("B12", dir="o")),
+            Subsignal("ras",     PinsN("C12", dir="o")),
+            Subsignal("cas",     PinsN("D13", dir="o")),
+            Subsignal("a",       Pins("A4 D2 C3 C7 D3 D4 D1 B2 C1 A2 A7 C2 C4", dir="o")),
+            Subsignal("ba",      Pins("B6 B7 A6", dir="o")),
+            Subsignal("dqs",     DiffPairs("G18 H17", "B15 A16", dir="io"),
+                      Attrs(IO_TYPE="SSTL135D_I", TERMINATION="OFF",
+                      DIFFRESISTOR="100")),
+            Subsignal("dq",      Pins("F17 F16 G15 F15 J16 C18 H16 F18 C17 D15 B17 C16 A15 B13 A17 A13", dir="io"),
+                      Attrs(TERMINATION="75")),
+            Subsignal("dm",      Pins("G16 D16", dir="o")),
+            Subsignal("odt",     Pins("C13", dir="o")),
+            Attrs(IO_TYPE="SSTL135_I", SLEWRATE="FAST")
+        ),
+
+        Resource("ddr3_pseudo_power", 0,
+            # pseudo power pins, leave these at their default value
+            Subsignal("vcc_virtual", PinsN("A3 B18 C6 C15 D17 D18 K15 K16 K17", dir="o")),
+            Subsignal("gnd_virtual", Pins("L15 L16 L18", dir="o")),
+            Attrs(IO_TYPE="SSTL135_II", SLEWRATE="FAST")
+        ),
+
+        *SDCardResources(0,
+            dat0="J1", dat1="K3", dat2="L3", dat3="M1", clk="K1", cmd="K2", cd="L1",
+            attrs=Attrs(IO_TYPE="LVCMOS33", SLEWRATE="FAST")
+        ),
+
+        Resource("usb", 0,
+            Subsignal("d_p",    Pins("N1", dir="io")),
+            Subsignal("d_m",    Pins("M2", dir="io")),
+            Subsignal("pullup", Pins("N2", dir="o")),
+            Attrs(IO_TYPE="LVCMOS33")
+        ),
+    ]
+    connectors = [
+        Connector("io", 0, {
+            "0":    "N17",
+            "1":    "M18",
+            "5":    "B10",
+            "6":    "B9",
+            "9":    "C8",
+            "10":   "B8",
+            "11":   "A8",
+            "12":   "H2",
+            "13":   "J2",
+            "miso": "N15",
+            "mosi": "N16",
+            "sck":  "R17",
+            "scl":  "C9",
+            "sda":  "C10"
+        }),
+        Connector("mcu", 0, {
+            "0":    "A10",
+            "1":    "C11",
+            "2":    "A11",
+            "3":    "B11",
+        }),
+    ]
+
+    @property
+    def required_tools(self):
+        return super().required_tools + [
+            "dfu-suffix"
+        ]
+
+    @property
+    def command_templates(self):
+        return super().command_templates + [
+            r"""
+            {{invoke_tool("dfu-suffix")}}
+                -v 1209 -p 5af0 -a {{name}}.bit
+            """
+        ]
+
+    def toolchain_prepare(self, fragment, name, **kwargs):
+        overrides = dict(ecppack_opts="--compress --freq 38.8")
+        overrides.update(kwargs)
+        return super().toolchain_prepare(fragment, name, **overrides)
+
+    def toolchain_program(self, products, name):
+        dfu_util = os.environ.get("DFU_UTIL", "dfu-util")
+        with products.extract("{}.bit".format(name)) as bitstream_filename:
+            subprocess.check_call([dfu_util, "-D", bitstream_filename])
+
+
+if __name__ == "__main__":
+    from .test.blinky import *
+    OrangeCrabR0_1Platform().build(Blinky(), do_program=True)