1.1 --- a/Hardware/Heatmaster/Heatmaster.cs	Tue Mar 15 21:54:56 2011 +0000
     1.2 +++ b/Hardware/Heatmaster/Heatmaster.cs	Tue Mar 15 22:00:31 2011 +0000
     1.3 @@ -16,7 +16,7 @@
     1.4  
     1.5    The Initial Developer of the Original Code is 
     1.6    Michael Möller <m.moeller@gmx.ch>.
     1.7 -  Portions created by the Initial Developer are Copyright (C) 2010
     1.8 +  Portions created by the Initial Developer are Copyright (C) 2010-2011
     1.9    the Initial Developer. All Rights Reserved.
    1.10  
    1.11    Contributor(s):
    1.12 @@ -265,7 +265,7 @@
    1.13        if (!available)
    1.14          return;
    1.15  
    1.16 -      while (serialPort.BytesToRead > 0) {
    1.17 +      while (serialPort.IsOpen &&  serialPort.BytesToRead > 0) {
    1.18          byte b = (byte)serialPort.ReadByte();
    1.19          if (b == 0x0D) {
    1.20            ProcessUpdateLine(buffer.ToString());