Add support for MuseLab iCESugar board.

1 files changed, 64 insertions, 0 deletions

diff --git a/nmigen_boards/icesugar.py b/nmigen_boards/icesugar.py
new file mode 100644
index 0000000..bb079be
--- /dev/null
+++ b/nmigen_boards/icesugar.py
@@ -0,0 +1,64 @@
+import subprocess
+
+from nmigen.build import *
+from nmigen.vendor.lattice_ice40 import *
+from .resources import *
+
+
+__all__ = ["ICESugarPlatform"]
+
+
+class ICESugarPlatform(LatticeICE40Platform):
+    device      = "iCE40UP5K"
+    package     = "SG48"
+    default_clk = "clk12"
+
+    resources   = [
+        Resource("clk12", 0, Pins("35", dir="i"),
+                 Clock(12e6), Attrs(GLOBAL=True, IO_STANDARD="LVCMOS33")),
+
+        *LEDResources(pins="40 41 39", invert=True, attrs=Attrs(IO_STANDARD="LVCMOS33")),
+
+        # Semantic aliases
+        Resource("led_r", 0, PinsN("40", dir="o"), Attrs(IO_STANDARD="LVCMOS33")),
+        Resource("led_g", 0, PinsN("41", dir="o"), Attrs(IO_STANDARD="LVCMOS33")),
+        Resource("led_b", 0, PinsN("39", dir="o"), Attrs(IO_STANDARD="LVCMOS33")),
+
+        *SwitchResources(
+            pins="18 19 20 21",
+            attrs=Attrs(IO_STANDARD="LVCMOS33")
+        ),
+
+        UARTResource(0,
+            rx="4", tx="6",
+            attrs=Attrs(IO_STANDARD="LVTTL33", PULLUP=1)
+        ),
+
+        *SPIFlashResources(0,
+            cs_n="16", clk="15", copi="14", cipo="17", wp_n="12", hold_n="13",
+            attrs=Attrs(IO_STANDARD="LVCMOS33")
+        ),
+
+        Resource("usb", 0,
+            Subsignal("d_p",    Pins("10", dir="io")),
+            Subsignal("d_n",    Pins("9", dir="io")),
+            Subsignal("pullup", Pins("11", dir="o")),
+            Attrs(IO_STANDARD="LVCMOS33")
+        ),
+    ]
+
+    connectors = [
+        Connector("pmod", 0, "10  6  3 48 - -  9  4  2 47 - -"), # PMOD1 - IO pins shared by USB
+        Connector("pmod", 1, "46 44 42 37 - - 45 43 38 36 - -"), # PMOD2
+        Connector("pmod", 2, "34 31 27 25 - - 32 28 26 23 - -"), # PMOD3
+        Connector("pmod", 3, "21 20 19 18 - -  -  -  -  - - -"), # PMOD4 - IO pins used for switches via jumpers
+    ]
+
+    def toolchain_program(self, products, name):
+        with products.extract("{}.bin".format(name)) as bitstream_filename:
+            subprocess.check_call(["icesprog", bitstream_filename])
+
+
+if __name__ == "__main__":
+    from .test.blinky import *
+    ICESugarPlatform().build(Blinky(), do_program=True)