If it's really a Permission denied exception, then it looks to me like
you might need root rights.
Thats a standard requirement on raw ports anyway.
Am 13.03.2011 23:31, schrieb Mrhyde88:
> Hi guys
>
> im just starting with Mono on linux, and im having problems getting the
> serial port to work, heres the code im using:
>
> ##########################################################
> using System;
> using Gtk;
> using System.IO.Ports;
>
>
>
> public partial class MainWindow : Gtk.Window
> {
> SerialPort sport= new System.IO.Ports.SerialPort("/dev/ttyS0", 9600,
> Parity.None,8, StopBits.None);
> public MainWindow () : base(Gtk.WindowType.Toplevel)
> {
> Build ();
>
>
> }
>
> protected void OnDeleteEvent (object sender, DeleteEventArgs a)
> {
> Application.Quit ();
> a.RetVal = true;
> }
>
> //initialize serial port
> public void serial(){
> //SerialPort sport= new System.IO.Ports.SerialPort("/dev/ttyUSB0",
> 9600);
>
> if (sport.IsOpen==false){
> sport.BaudRate=9600;
> sport.DtrEnable=true;
> sport.RtsEnable=true;
> sport.Open();
> sport.ReadTimeout=400;
> }
> else
> {
> sport.Close();
> }
>
>
> }
>
> //read serial port Data
> public string ReadData()
> {
> byte tmpByte;
> string rxString = "";
>
> tmpByte = (byte) sport.ReadByte();
>
> while (tmpByte != 255)
> {
> rxString += ((char) tmpByte);
>
> tmpByte = (byte) sport.ReadByte();
> }
>
> return rxString;
> }
>
> protected virtual void OnBtnimagePressed (object sender,
> System.EventArgs
> e)
> {
> serial();
> txtserial.Text= ReadData();
>
> }
>
>
>
>
> }
>
> ####################
>
> The program crashes on the sport.Open() instruction,
>
> System.Reflection.TargetInvocationException: Exception has been thrown by
> the target of an invocation. ---> System.IO.IOException: Permission denied
>
>
> Regards
>
>
> --
> View this message in context:
> http://mono.1490590.n4.nabble.com/linux-Serial-Port-tp3352705p3352705.html
> Sent from the Mono - Dev mailing list archive at Nabble.com.
> _______________________________________________
> Mono-devel-list mailing list
> [email protected]
> http://lists.ximian.com/mailman/listinfo/mono-devel-list
_______________________________________________
Mono-devel-list mailing list
[email protected]
http://lists.ximian.com/mailman/listinfo/mono-devel-list
