solved a bug in syncRead for FTDI devices

examplesync/src/main/java/com/felhr/serialportexamplesync/MainActivity.java

@@ -19,8 +19,6 @@ import android.widget.EditText;
 import android.widget.TextView;
 import android.widget.Toast;
 
-import com.felhr.usbserial.UsbSerialDevice;
-
 import java.lang.ref.WeakReference;
 import java.util.Set;
 
@@ -189,8 +187,8 @@ public class MainActivity extends AppCompatActivity {
                     Toast.makeText(mActivity.get(), "DSR_CHANGE",Toast.LENGTH_LONG).show();
                     break;
                 case UsbService.SYNC_READ:
-                    byte[] buffer = (byte[]) msg.obj;
-                    mActivity.get().display.append(new String(buffer));
+                    String buffer = (String) msg.obj;
+                    mActivity.get().display.append(buffer);
                     break;
             }
         }

examplesync/src/main/java/com/felhr/serialportexamplesync/UsbService.java

@@ -302,7 +302,8 @@ public class UsbService extends Service {
                 if(n > 0) {
                     byte[] received = new byte[n];
                     System.arraycopy(buffer, 0, received, 0, n);
-                    mHandler.obtainMessage(SYNC_READ, buffer).sendToTarget();
+                    String receivedStr = new String(received);
+                    mHandler.obtainMessage(SYNC_READ, receivedStr).sendToTarget();
                 }
             }
         }

usbserial/src/main/java/com/felhr/usbserial/FTDISerialDevice.java

@@ -631,10 +631,14 @@ public class FTDISerialDevice extends UsbSerialDevice
 
         do
         {
-            int timeLeft = (int) (stopTime - System.currentTimeMillis());
-            if(timeLeft <= 0)
+            int timeLeft = 0;
+            if(timeout > 0)
             {
-                break;
+                timeLeft = (int) (stopTime - System.currentTimeMillis());
+                if (timeLeft <= 0)
+                {
+                    break;
+                }
             }
 
             int numberBytes = connection.bulkTransfer(inEndpoint, tempBuffer, tempBuffer.length, timeLeft);