Calculation times & placing test data included ...

neopixelar.py

@@ -308,7 +308,7 @@ class BaseSoC(SoCCore):
                 l2_cache_reverse        = True
             )
 
-        # Ethernet / Etherbone ---------------------------------------------------------------------
+        # Ethernet / Etherbone ---------------------------------------------------------------------        
         if with_ethernet or with_etherbone:
             self.submodules.ethphy = LiteEthPHYRGMII(
                 clock_pads = self.platform.request("eth_clocks", eth_phy),

neopixelengine.py

@@ -22,17 +22,26 @@ from litex.soc.interconnect.csr import AutoCSR, CSRStatus, CSRStorage, CSRField
 class NeoPixelEngine(Module, AutoCSR):
     """NeoPixelEngine class provides the protocol logic to drive NeoPixel LED strips
         
-        Inputs:        
-        b24Data2Load        New data to be loaded (24 bits)
-        b8LoadOffset        (0..255) Offset into b24GRBArray to load b24Data2Load to
-        b8Len               (0..255) Length of actual 24-bit data entries (i.e. # of NeoPixels)
-        bEnable             To enable running (after data preparation)
+        **Inputs**:      
+        :param b24Data2Load int24: New data to be loaded (24 bits)
+
+        :param b8LoadOffset int8:  Offset (0..255) into b24GRBArray to load b24Data2Load to
+
+        :param b8Len        int8:  Length (0..255) of actual 24-bit data entries (i.e. # of NeoPixels)
+
+        :param bEnable      bool:  To enable running (after data preparation)
         
-        Output:
-        bDataPin            NeoPixel 'Din' pin output
+        **Output**:
+
+        :return bDataPin    bool:  NeoPixel 'Din' pin output
     """
-    def __init__(self):        
-        self.b24GRBArray = Array(Signal(24) for word24 in range(27)) # Local 24-bit data Array                
+    def __init__(self):
+        # On Colorlight-5A-75B/Lattice ECP5-25 (@i7/4th gen.):
+        # 256 NeoPixel LEDs will use 95% of TRELLIS_SLICES & REQUIRE ether_net & ether_bone being DISABLED! Calc. time >2h
+        # 192 NeoPixel LEDs w/ ethernet/etherbone will use 95% of TRELLIS_SLICES & take approx. 2:20h to calculate 
+        # 27 NeoPixels LEDs w/ ethernet/etherbone used for any tests will require 73% of TRELLIS_SLICES & take less than 0:10h to calculate
+        n_LEDs = 27
+        self.b24GRBArray = Array(Signal(24) for word24 in range(n_LEDs)) # Local 24-bit data Array                
         # Inputs
         self.b24Data2Load = CSRStorage(24, reset_less=True, description="Load value (GRB)")
         self.b8LoadOffset = CSRStorage(8, reset_less=True, description="Offset to store (GRB) value")

remotetest.py

@@ -17,7 +17,7 @@ def test(csr_csv):
     wb = RemoteClient(csr_csv=csr_csv) # Access wishbone bus
     wb.open()           # to remote client
 
-    print("NeoPixel #0 on & off test: ")
+    print("NeoPixel on & off test: ")
     for i in range(10):
         print(".",end="")
         #You may add manually: ~/fpga/litex/litex/litex/tools/remote/csr_builder.py