Makes the demo read-write happen more similar to how JMRI reads stuff…

… from the nodes. (#184)

Specifically, make the read happen a bit later and arrive on the swing thread.

src/org/openlcb/cdi/impl/DemoReadWriteAccess.java

@@ -1,5 +1,7 @@
 package org.openlcb.cdi.impl;
 
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
 import java.io.BufferedInputStream;
 import java.io.File;
 import java.io.FileInputStream;
@@ -12,6 +14,9 @@
 import org.jdom2.input.SAXBuilder;
 import org.openlcb.implementations.MemoryConfigurationService;
 
+import javax.swing.SwingUtilities;
+import javax.swing.Timer;
+
 /**
  * Helper class for various demo and test code to put in as a fake into the ConfigRepresentation constructor.
  * Created by bracz on 11/20/16.
@@ -30,10 +35,18 @@ public void doWrite(long address, int space, byte[] data, MemoryConfigurationSer
     public void doRead(long address, int space, int length, MemoryConfigurationService.McsReadHandler handler) {
         byte[] resp = new byte[length];
         for (int i = 0; i < resp.length; ++i) {
-            resp[i] = (byte)(((address + i) % 91) + 32);
+            resp[i] = 0;//(byte)(((address + i) % 91) + 32);
         }
-        handler.handleReadData(null, space, address, resp);
-        logger.log(Level.INFO, "read {0} {1}", new Object[]{address, space});
+        Timer t = new Timer(40, new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent actionEvent) {
+                handler.handleReadData(null, space, address, resp);
+                logger.log(Level.ALL, "read {0} {1}", new Object[]{address, space});
+                System.out.println(address);
+            }
+        });
+        t.setRepeats(false);
+        t.start();
     }
 
     static public ConfigRepresentation demoRepFromSample(Element root) {