Add support for MuseLab iCESugar-nano board

Author: pho

nmigen_boards/icesugar_nano.py

@@ -0,0 +1,48 @@
+import os
+import subprocess
+
+from nmigen.build import *
+from nmigen.vendor.lattice_ice40 import *
+from .resources import *
+
+
+__all__ = ["ICESugarNanoPlatform"]
+
+
+class ICESugarNanoPlatform(LatticeICE40Platform):
+    device      = "iCE40LP1K"
+    package     = "CM36"
+    default_clk = "clk12"
+
+    resources   = [
+        Resource("clk12", 0, Pins("D1", dir="i"),
+                 Clock(12e6), Attrs(GLOBAL=True, IO_STANDARD="LVCMOS33")),
+
+        *LEDResources(pins="B6", invert=False, attrs=Attrs(IO_STANDARD="LVCMOS33")),
+
+        UARTResource(0,
+            tx="B3", rx="A3",
+            attrs=Attrs(IO_STANDARD="LVTTL33", PULLUP=1)
+        ),
+
+        *SPIFlashResources(0,
+            cs_n="D5", clk="E5", copi="E4", cipo="F5",
+            attrs=Attrs(IO_STANDARD="LVCMOS33")
+        ),
+    ]
+
+    connectors = [
+        Connector("pmod", 0, "E2 D1 B1 A1 - -"),                    # PMOD1
+        Connector("pmod", 1, "B3 A3 B6 C5 - -"),                    # PMOD2
+        Connector("pmod", 2, "B4 B5 E1 B1 - - C6 E3 C2 A1 - -"),    # PMOD3
+    ]
+
+    def toolchain_program(self, products, name):
+        icesprog = os.environ.get("ICESPROG", "icesprog")
+        with products.extract("{}.bin".format(name)) as bitstream_filename:
+            subprocess.check_call([icesprog, bitstream_filename])
+
+
+if __name__ == "__main__":
+    from .test.blinky import *
+    ICESugarNanoPlatform().build(Blinky(), do_program=True)