Finally! 1st LED ok (h/w # must match!)

firmware/main.c

@@ -69,7 +69,7 @@ static void boot_sequence(void)
 }
 
 //------------------- Illumination demo --------------------------------
-extern void busy_wait(unsigned int ms);
+extern void busy_wait(unsigned int ms); // Worx!
 #define MAXTABLES 3 // 1..16 MUST match h/w!
 #define MAXLEDS 27 // 1..256 MUST match h/w!
 static int32_t arLEDBuffer[MAXTABLES][MAXLEDS]; // GRB values

neopixelar.py

@@ -333,8 +333,8 @@ class BaseSoC(SoCCore):
                 
         platform.add_extension(_gpios) # General LED outputs        
 
-        max_TABLES = 16 # 1..16
-        max_LEDS_per_chain = 32 # 1..256 
+        max_TABLES = 3 # 1..16
+        max_LEDS_per_chain = 27 # 1..256 
         self.submodules.npe = NeoPixelEngine(n_TABLES=max_TABLES, n_LEDs=max_LEDS_per_chain)
         self.add_csr("npe")         
         for i in range(42,56+2): # Do output on J4 (14) & J5 (2)

neopixelengine.py

@@ -237,7 +237,7 @@ class NeoPixelEngine(Module, AutoCSR, AutoDoc, ModuleDoc):
         )  
 
         fsm.act("NEXTTABLE",   
-            If(self.b4Table < 16,       
+            If(self.b4Table < n_TABLES,       
                 NextValue(self.b8Offset, 0), # Start @ 1st 24-bit data                                     
                 NextState("IDLE1") 
             ).Else(