From 49e395653ec1b36930f02aab40bfa2d684588764 Mon Sep 17 00:00:00 2001
From: saji <saji@saji.dev>
Date: Wed, 24 Apr 2024 17:14:39 -0500
Subject: [PATCH] add hub75 port mapping

---
 groovylight/hub75.py | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 groovylight/hub75.py

diff --git a/groovylight/hub75.py b/groovylight/hub75.py
new file mode 100644
index 0000000..5990f34
--- /dev/null
+++ b/groovylight/hub75.py
@@ -0,0 +1,26 @@
+
+
+# r0 g0 b0 gnd r1 g1 b1 e a b c d clk stb oe gnd
+from litex.build.generic_platform import Signal, Subsignal, Pins
+from litex.build.io import Module
+
+def make_hub75_iodevice(index, basename):
+    b = basename
+    signals = ("hub75_iodev", index,
+               Subsignal("r0", Pins(f"{b}:1")),
+               Subsignal("g0", Pins(f"{b}:2")),
+               Subsignal("b0", Pins(f"{b}:3")),
+               Subsignal("r1", Pins(f"{b}:5")),
+               Subsignal("g1", Pins(f"{b}:6")),
+               Subsignal("b1", Pins(f"{b}:7")),
+               Subsignal("addr", Pins(f"{b}:9 {b}:10 {b}:11 {b}:12 {b}:8")),
+               Subsignal("clk", Pins(f"{b}:13")),
+               Subsignal("stb", Pins(f"{b}:14")),
+               Subsignal("oe", Pins(f"{b}:15")),
+            )
+    return [signals]
+
+
+class Hub75Driver(Module):
+    count = Signal(8) # fsm counter
+