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POSerial.readline - out of memory
 

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  1. POSerial.readline - out of memory
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    <p>I am reading from an Arduino, which is sending text through the USB port. The Arduino sends the status of it's outputs every second. On the command received event I set a couple of checkboxes (either shutter open or mains on, or lights on) and also it outputs the data it received to a multiline text box.<br> Anyway.... it all works, for a few seconds, then slows down and eventually after about 10 minutes I get a Out of Memory exception. I cant figure out whats going wrong, I assume its in the class that reads the serial data - so here is that code, can anybody see anything wrong?</p> <pre><code>using System; using System.IO.Ports; namespace WOCA.Core.SerialComms { internal class ArduinoCommunicator : ICommunicator { public event EventHandler&lt;CommsEventsArg&gt; CommandReceived; internal ArduinoCommunicator(string comPort) { Port = new SerialPort(comPort) {BaudRate = 9600, DtrEnable = true}; Port.DataReceived += PortOnDataReceived; } private SerialPort Port { get; set; } public bool IsOpen { get; set; } public void Open() { try { if (!Port.IsOpen) { Port.Open(); IsOpen = true; } else { throw new InvalidSerialCommsException("Serial port already open"); } } catch (Exception ex) { throw new InvalidSerialCommsException("Serial Port error: " + ex.Message); } } public void Close() { try { if (Port.IsOpen) { Port.Close(); IsOpen = false; } else { throw new InvalidSerialCommsException("Serial port not open"); } } catch (Exception) { throw new InvalidSerialCommsException("Serial port error"); } } public void SendCommand(string command) { try { if (Port.IsOpen) { Port.Write(command); } else { throw new InvalidSerialCommsException("Serial port not open"); } } catch (Exception) { throw new InvalidSerialCommsException("Serial port error, the command has not been sent"); } } private void PortOnDataReceived(object sender, SerialDataReceivedEventArgs serialDataReceivedEventArgs) { SerialPort serialPort = sender as SerialPort; if (serialPort != null) { string command = serialPort.ReadLine(); command = command.Remove(command.Length-1,1); CommsEventsArg args = new CommsEventsArg(command); OnCommandReceived(args); } } protected virtual void OnCommandReceived(CommsEventsArg e) { EventHandler&lt;CommsEventsArg&gt; handler = CommandReceived; if (handler != null) { handler(this, e); } } } </code></pre> <p>}</p>
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    1. USdsolimano
    1. USuser1779064
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    1. COShow us where you attach to `CommandReceived` and the method that responds to it.
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      1. POSerial.readline - out of memory
      1. USMatthew Watson
    2. COHave you tried to find where does you receive this exception. I mean at which line?
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      1. POSerial.readline - out of memory
      1. USTariq
    3. COIt could be a platform bug. The serial driver code could be using an uninitalized pointer at some point. You could try to surround the ReadLine() in a try/catch block and ignore the OOM exceptions?
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      1. USMac
 

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