diff --git a/src/org/hwo/io/NewSerialPort/NewSerialPort.java b/src/org/hwo/io/NewSerialPort/NewSerialPort.java
index c2cb111..ac2d5c4 100644
--- a/src/org/hwo/io/NewSerialPort/NewSerialPort.java
+++ b/src/org/hwo/io/NewSerialPort/NewSerialPort.java
@@ -16,6 +16,9 @@ import org.hwo.io.SerialPortWINDOWS;
 import org.hwo.platform.Platform;
 import org.hwo.platform.natives.NativeLoader;
 
+import static org.hwo.logging.Logging.*;
+import static org.hwo.logging.LogLevel.*;
+
 public class NewSerialPort {
 
 	public static long nsp_RET_OK = 0;			// Kein Fehler
@@ -288,6 +291,7 @@ public class NewSerialPort {
 		@Override
 		public void write(int arg0) throws IOException{
 			int r;
+			boolean retry = true;
 			
 			if (autoOpen && !isOpen())
 				open();
@@ -295,16 +299,26 @@ public class NewSerialPort {
 			if (!isOpen())
 				throw new IOException("Port not opened");
 			
-			r = nsp_write(nsp, arg0);
-			if (r<0){
-				if (r == nsp_RET_NOTOPEN)
-					NewSerialPort.this.close();
-				if (r == nsp_RET_OTHER){
-					NewSerialPort.this.close();
-					NewSerialPort.this.open();
-				}	
-
-				throw new IOException(String.format("nsp_write()=%d", r));
+			while (true){
+				r = nsp_write(nsp, arg0);
+				if (r == -11){	// -EAGAIN
+					try {
+						Thread.sleep(5);
+					} catch (InterruptedException e){
+						log(e);
+					}
+				} else if (r<0){
+					if (r == nsp_RET_NOTOPEN)
+						NewSerialPort.this.close();
+					if (r == nsp_RET_OTHER){
+						NewSerialPort.this.close();
+						NewSerialPort.this.open();
+					}	
+	
+					throw new IOException(String.format("nsp_write()=%d", r));
+				} else {
+					break;
+				}
 			}
 		}
 	}