Add Lattice MachXO3LF Starter Kit

diff --git a/nmigen_boards/machXO3_sk.py b/nmigen_boards/machXO3_sk.py
new file mode 100644 (file)
index 0000000..2607b04
--- /dev/null
+++ b/nmigen_boards/machXO3_sk.py
@@ -0,0 +1,74 @@
+import os
+import subprocess
+
+from nmigen.build import *
+from nmigen.vendor.lattice_machxo_2_3l import *
+from .resources import *
+
+
+__all__ = ["MachXO3SKPlatform"]
+
+
+class MachXO3SKPlatform(LatticeMachXO2Platform):
+    device      = "LCMXO3LF-6900C"
+    package     = "BG256"
+    speed       = "5"
+    default_clk = "clk12"
+    resources   = [
+        Resource("clk12", 0, Pins("C8", dir="i"),
+            Clock(12e6), Attrs(IO_TYPE="LVCMOS33")
+        ),
+
+        UARTResource(0,
+            rx="A11", tx="C11", rts="F10", cts="D11", dtr="B11", dsr="A12", dcd="B13", ri="A14",
+            attrs=Attrs(IO_TYPE="LVCMOS33"), role="dce"
+        ), # need to solder R14-R18, R20-R22
+
+        *LEDResources(
+            pins="H11 J13 J11 L12 K11 L13 N15 P16",
+            invert=True, attrs=Attrs(IO_TYPE="LVCMOS33")
+        ), # D9..D2
+
+        *ButtonResources(pins="B3", invert=True, attrs=Attrs(IO_TYPE="LVCMOS33")),
+
+        *SwitchResources(pins="N2 P1 M3 N1",
+            invert=True, attrs=Attrs(IO_TYPE="LVCMOS33")
+        ), # SW2
+
+        *SPIFlashResources(0,
+            cs="R5", clk="P6", mosi="T13", miso="T6",
+            attrs=Attrs(IO_TYPE="LVCMOS33")
+        ),
+    ]
+    connectors  = [
+        Connector("j", 3, # J3
+             "-  -  A13 C13 F8  B12 C12 E11 E10 D10 "
+             "-  -  F9  C10 E8  E9  E7  D8  D7  C7  "
+             "-  -  C5  D6  E6  C4  A10 F7  D9  B9  "
+             "-  -  B6  B7  B5  A5  B4  A4  -   A3  "),
+        Connector("j", 4, # J4
+             "-  -  K12 K13 M14 N14 L14 N16 M15 M16 "
+             "-  -  L15 L16 K14 K16 K15 J14 H14 J15 "
+             "-  -  J16 H15 H16 G15 G16 F15 F16 E15 "
+             "-  -  E16 E14 D16 C15 D14 F14 G14 B16 "),
+        Connector("j", 6, # J6
+             "-  -  T12 T14 R11 R13 T11 M11 P11 N10 "
+             "-  -  T10 P10 R9  R10 T9  N9  P9  M8  "
+             "-  -  T8  L8  P8  M6  R7  R8  P7  T7  "
+             "-  -  L7  R6  N6  T5  R4  P4  T3  T4  "),
+        Connector("j", 8, # J8
+             "-  -  H6  N3  M2  M1  L2  L1  L3  L5  "
+             "-  -  K4  J1  K1  J2  J3  H3  H2  H1  "
+             "-  -  G2  G1  F2  F1  E2  E1  D2  D1  "
+             "-  -  C2  C1  G3  B1  D3  E3  F3  F5  "),
+    ]
+
+    def toolchain_program(self, products, name):
+        openFPGALoader = os.environ.get("OPENFPGALOADER", "openFPGALoader")
+        with products.extract("{}.bit".format(name)) as bitstream_filename:
+            subprocess.check_call([openFPGALoader, bitstream_filename])
+
+
+if __name__ == "__main__":
+    from .test.blinky import *
+    MachXO3SKPlatform().build(Blinky(), do_program=True)