initial coordinator

src/groovylight/bitslicer.py

@@ -223,10 +223,40 @@ class Hub75Coordinator(wiring.Component):
 
     def __init__(self, n_strings=1):
         self.n_strings = n_strings
-        super().__init__()
+        super().__init__(
+            {
+                "ctrl": Out(Hub75Ctrl),
+                "data": data.ArrayLayout(Hub75Data, n_strings),
+                # TODO: fetching routine? maybe it's passed through.
+            }
+        )
 
     def elaborate(self, platform: Platform) -> Module:
         m = Module()
+        # swapline is which buffer we are using vs sending out.
+        swapline = Signal(1)
+
+        # for each string, spawn a swapbuffer + stringdriver and connect.
+        # don't worry about fetching for now.
+        self.strings = strings = []
+        self.buffers = bufs = []
+        donearr = []
+        startStrings = Signal(1)
+        stringsDone = Signal(1)
+        for i in range(self.n_strings):
+            sb = SwapBuffer(depth=128, shape=data.ArrayLayout(Rgb666Layout, 2))
+            bufs += sb
+            stringdriver = Hub75StringDriver(128)
+            strings += stringdriver
+            wiring.connect(m, sb.read_port, stringdriver.bram_port)
+            m.d.comb += [
+                self.data[i].eq(stringdriver.display_out),
+                stringdriver.start.eq(startStrings),
+                sb.selector.eq(swapline),
+            ]
+            m.submodules += [sb, stringdriver]
+            donearr += stringdriver.done
+        m.d.comb += stringsDone.eq(Cat(*donearr).all())
 
         return m