added rainbow corner animation

cubeplex.h

@@ -582,7 +582,7 @@ int currentTimer = 0;
 int maxTimer = 6250;  // 100ms delay / 16uS interrupt time
 
 int nextState(int state) {
-  return  (state + 1) % 8;
+  return  (state + 1) % 9;
 }
 
 // the interrupt function to display the leds  (T2 = 8 bit timer)

rainbow_corner.ino

@@ -1,11 +1,13 @@
 /******************************* RAINBOW CORNER *******************************\
 | Found on the internet....                                                    |
 |                                                                              |
-| Modified By: S. Dugre to use asynchronous timer   
-
- NOT WORKING GOOD.  IT SCREWS UP ANIMATION PROGRESSION 
+| Modified By: S. Dugre to use asynchronous timer                              |
+|                                                                              | 
 \******************************************************************************/
 
+int loop_rc1, loop_rc2, loop_rc3, loop_rc4;
+int moveAxisState;
+
 byte spectrum2[24][3] = {
   {8,0,0},{7,1,0},{6,2,0},{5,3,0},{4,4,0},{3,5,0},{2,6,0},{1,7,0},
   {0,8,0},{0,7,1},{0,6,2},{0,5,3},{0,4,4},{0,3,5},{0,2,6},{0,1,7},
@@ -15,7 +17,7 @@ byte offset    = 0;
 byte shift[3]  = {0,0,0};
 bool mirror[3] = {false,false,false};
 byte anim[8]   = {0,2,0,1,0,2,0,1};
-
+ 
 void drawCube() {
   for (byte x = 0; x <= 3; x++) {
     for (byte y = 0; y <= 3; y++) {
@@ -36,20 +38,25 @@ void drawCube() {
   flushBuffer();
   clearBuffer();
   offset = offset == 0 ? 23 : offset - 1;
-  //delay(75);  
-  currentTimer = 0;
+  //delay(75);
+  //timerReset = false;
 }
 
 void moveAxis(byte axis) {
   for (int n = 1;n <= 3; n++) {
     shift[axis] = n;
     drawCube();
+    delay(75);
   }
+
   mirror[axis] = not mirror[axis];
   drawCube();
+  delay(75);
+
   for (int n = 2;n >= 0; n--) {
     shift[axis] = n;
     drawCube();
+    delay(75);
   }
 }
 
@@ -63,13 +70,29 @@ void rainbow_corner() {
 
     currentTimer = 0;
     maxTimer = 4687; // 75 ms
+
+    loop_rc1 = loop_rc2 = 0;
+    loop_rc3 = 1;
+    loop_rc4 = 2;
+    moveAxisState = 0;
   }
   
   if ( timerReset) {  
-    for (byte n = 0;n <= 7;n++) {
-      for (byte m = 0;m < 50;m++) drawCube();
-      moveAxis(anim[n]);
+    
+    if(loop_rc2 < 50){
+      loop_rc2++;
+      drawCube();
+      timerReset = false;
     }
-    timerReset = false;
+    else {
+      loop_rc2 = 0;
+      moveAxis(anim[loop_rc1]);
+      if(loop_rc1 <= 7){
+        loop_rc1++;
+      }
+      else{
+        loop_rc1 = 0;
+      }
+    }    
   }  
 }