added function to rotate by 180 degrees

examples/LedControllerDemoCounting/LedControllerDemoCounting.ino

@@ -120,39 +120,31 @@ std::array<byte,8> nine= {
   B00000000
 };
 
-std::array <byte ,8> reverse(std::array <byte ,8> dat){
-  decltype(dat) ret;
-  for(unsigned int i=0;i<8;i++){
-    ret[7-i]=lc.reverse(dat[i]);
-  }
-  return ret;
-}
-
 std::array <byte ,8> getDigit(unsigned int i){
   switch (i){
   case 0:
-    return reverse(zero);
+    return lc.rotate180(zero);
   case 1:
-    return reverse(one);
+    return lc.rotate180(one);
     case 2:
-      return reverse(two);
+      return lc.rotate180(two);
     case 3:
-      return reverse(three);
+      return lc.rotate180(three);
     case 4:
-      return reverse(four);
+      return lc.rotate180(four);
     case 5:
-      return reverse(five);
+      return lc.rotate180(five);
     case 6:
-      return reverse(six);
+      return lc.rotate180(six);
     case 7:
-      return reverse(seven);
+      return lc.rotate180(seven);
     case 8:
-      return reverse(eight);
+      return lc.rotate180(eight);
     case 9:
-      return reverse(nine);
+      return lc.rotate180(nine);
 
   default:
-    return reverse(zero);
+    return lc.rotate180(zero);
   }
 }
 

src/LedController.cpp

@@ -392,5 +392,15 @@ std::array<byte,8> LedController::reverse(std::array<byte,8> input){
         ret.at(i) = reverse(input.at(i));
     }
 
+    return ret;
+}
+
+std::array<byte,8> LedController::rotate180(std::array<byte,8> input){
+    decltype(input) ret;
+
+    for(unsigned int i = 0; i < input.size();i++){
+        ret.at(input.size()-(i+1)) = reverse(input.at(i));
+    }
+
     return ret;
 }

src/LedController.hpp

@@ -308,5 +308,13 @@ class LedController{
      * @return std::array<byte,8> The mirrored array
      */
     std::array<byte,8> reverse(std::array<byte,8> input);
+
+    /**
+     * @brief rotate an byte[8] array by 180 degrees
+     * 
+     * @param input the array that will be rotated
+     * @return std::array<byte,8> The rotated array
+     */
+    std::array<byte,8> rotate180(std::array<byte,8> input);
 };