Add meaningful colour struct, double buffering

src/main.c

@@ -10,8 +10,25 @@ int main(void)
 
     LED_Init();
 
+    int ct = 0;
+    uint8_t *data = (uint8_t*)LED_PixelData;
     while(1)
     {
+        if(LED_FrameFlag)
+        {
+            LED_FrameFlag = false;
+            data[ct]++;
+            LED_Commit();
+            if(data[ct] == 255)
+            {
+                ct += 3;
+                if(ct >= LED_COLUMNS * LED_ROWS)
+                {
+                    ct -= LED_COLUMNS * LED_ROWS;
+                    ct += 1;
+                }
+            }
+        }
     }
 
     return 0;