Move scratch buffer manipulation into helper method. Convert IP address configuration to use new method.

git-svn-id: svn+ssh://oldsvn/home/mlalondesvn/svn/cral@92 3ee9b42a-b53c-0410-a25e-f0b6218d5d5b

branches/follower/wiz810mj/src/demo/WizDemo4/WizDemo4.pde

@@ -107,9 +107,10 @@ class Wiz810MjDevice {
   
   private:
     void _init(void);
+    byte * _packBuffer(byte b0, byte b1, byte b2, byte b3);
     
     int _resetPin;
-  
+
     byte _scratchBuffer[6];   // Can we make this static?
 };
 
@@ -158,7 +159,7 @@ void Wiz810MjDevice::_init(void) {
   sysinit(0x55, 0x55);  
 }
 
-void Wiz810MjDevice::setIp(byte b0, byte b1, byte b2, byte b3) {
+byte * Wiz810MjDevice::_packBuffer(byte b0, byte b1, byte b2, byte b3) {
   /*
   
    */
@@ -166,8 +167,15 @@ void Wiz810MjDevice::setIp(byte b0, byte b1, byte b2, byte b3) {
   _scratchBuffer[1] = b1;
   _scratchBuffer[2] = b2;
   _scratchBuffer[3] = b3;
+
+  return _scratchBuffer;
+}
+
+void Wiz810MjDevice::setIp(byte b0, byte b1, byte b2, byte b3) {
+  /*
   
-  setSIPR(_scratchBuffer);  
+   */
+  setSIPR(_packBuffer(b0, b1, b2, b3));  
 }
 
 /* ----------------------- */