[cooja] Memory: Added get/setByteArray functions to Memory access class

Provides a cleaner interface to access memory as VarMemory already
contains variable name based get/setByteArray functions.

tools/cooja/java/org/contikios/cooja/mote/memory/Memory.java

@@ -151,6 +151,18 @@ public abstract class Memory {
     return MemoryBuffer.wrap(memIntf.getLayout(), memIntf.getMemorySegment(addr, memIntf.getLayout().addrSize)).getAddr();
   }
 
+  /**
+   * Read byte array starting at given address.
+   *
+   * @param addr Start address to read from
+   * @param length Numbe of bytes to read
+   * @return byte array read from location assigned to variable name
+   */
+  public byte[] getByteArray(long addr, int length)
+          throws UnknownVariableException {
+    return memIntf.getMemorySegment(addr, length);
+  }
+
   // -- Set fixed size types
   /**
    * Write 8 bit integer to address.
@@ -253,4 +265,15 @@ public abstract class Memory {
     memIntf.setMemorySegment(addr, MemoryBuffer.wrap(memIntf.getLayout(), new byte[memIntf.getLayout().addrSize]).putAddr(value).getBytes());
   }
 
+  /**
+   * Write byte array starting at given address.
+   *
+   * @param addr Start address to write to
+   * @param data data to write
+   */
+  public void setByteArray(long addr, byte[] data)
+          throws UnknownVariableException {
+    memIntf.setMemorySegment(addr, data);
+  }
+
 }

tools/cooja/java/org/contikios/cooja/mote/memory/VarMemory.java

@@ -243,7 +243,7 @@ public class VarMemory extends Memory {
    */
   public byte[] getByteArray(String varName, int length)
           throws UnknownVariableException {
-    return memIntf.getMemorySegment(getVariable(varName).addr, length);
+    return getByteArray(getVariable(varName).addr, length);
   }
 
   /**
@@ -349,13 +349,14 @@ public class VarMemory extends Memory {
   }
 
   /**
+   * Write byte array starting at location associated with this variable name.
    *
-   * @param varName
-   * @param data
+   * @param varName Variable name
+   * @param data data to write
    */
   public void setByteArray(String varName, byte[] data)
           throws UnknownVariableException {
-    memIntf.setMemorySegment(getVariable(varName).addr, data);
+    setByteArray(getVariable(varName).addr, data);
   }
 
   /**