Prototype Alchitry IO shield board config.

amaranth_boards/alchitry_io.py

@@ -0,0 +1,78 @@
+import os
+import shutil
+import subprocess
+
+from amaranth.build import *
+from amaranth.vendor.lattice_ice40 import *
+from amaranth_boards.alchitry_au import *
+from amaranth_boards.alchitry_cu import *
+from .resources import *
+
+__all__ = ["AlchitryCuIOPlatform"]
+
+class AlchitryCuIOPlatform(AlchitryCuPlatform):
+    resources = [
+        *Display7SegResource(0, 
+            a="3", b="4", c="18", d="19",
+            e="20", f="2", g="1", dp="17", 
+            conn=("bank",0), invert=True, attrs="SB_LVCMOS"
+            ),
+
+        # Not sure how to handle multiplex display..
+        # Control line for anode are 21 22 5 6 [display 0-3]
+        Resource("anodes",0,
+            Subsignal("7seg_0", Pins("21", dir="o")),
+            Subsignal("7seg_1", Pins("22", dir="o")),
+            Subsignal("7seg_2", Pins("5",  dir="o")),
+            Subsignal("7seg_3", Pins("6",  dir="o")),
+            conn=("bank",0), invert=True
+            ),
+
+        # Kind of a weird hack because I want to use generic connector
+        # numbering but S5 is on a different connector than S1-4.
+        # I guess rely on user to pick these up and use the pinouts correctly
+        # in their application? Maybe they can just use something similar to
+        # get_all_resources from .test/blinky to get all the things.
+        *ButtonResources(0, 
+            pins="31 32 15 16", conn=("bank",1), 
+            invert=True, attrs="SB_LVCMOS"
+            ),
+
+        *ButtonResources(1,
+            pins="18", conn=("bank",2),
+            invert=True, attrs="SB_LVCMOS"
+            ),
+
+        #Same with the switches and LEDs.
+        *SwitchResources(0, 
+            pins="23 24 25 26 27 28", conn=("bank",1),
+            invert=True, attrs="SB_LVCMOS"
+            ),
+
+        *SwitchResources(1,
+            pins="31 32", conn=("bank",0),
+            invert=True, attrs="SB_LVCMOS"
+            ),
+
+        *SwitchResources(2,
+            pins="17 18 19 20 21 22", conn=("bank",1),
+            invert=True, attrs="SB_LVCMOS"
+            ),
+
+        *SwitchResources(3,
+            pins="23 24 25 26 27 28 29 30", conn=("bank",0),
+            invert=True, attrs="SB_LVCMOS"
+            ),
+
+        # Total of 24 LED (3 banks of 8). Banks are split between connectors
+        # So no easy way to resolve.
+        *LEDResources(0, 
+            pins="14 13 12 11 10 9 8 7 6 5 4 3 2 1", conn=("bank",1),
+            invert=True, attrs="SB_LVCMOS"
+            ),
+
+        *LEDResources(1,
+            pins="16 15 14 13 12 11 10 9 8 7", conn=("bank",0),
+            invert=True, attrs="SB_LVCMOS"
+            )
+    ]