Using the IR port for serial communication

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Hi all,

I have an HP iPaq 2495 with Mobile 5.0. I'm trying to create a program
to send data to a Lego Mindstorm unit. Using a regediting program I
installed, I found the following several entries, from which I think
the communications port is COM2 or COM3

HKEY_LOCAL_MACHINE/Comm/Irsir1/Parms/Port = 2
HKEY_LOCAL_MACHINE/Drivers/Builtin/IRCOMM/Index = 3
HKEY_LOCAL_MACHINE/Drivers/Builtin/IrDA/Index = 2

Now thinking that IrDA is not the format I want, as I need to have
direct control over the emitted IR signal, I used COM3 in the following
code

<code>
dim serialtest as new system.io.ports.serialport("COM3")
serialtest.open()
serialtest.write(bytes, 0, 10) 'Writing a byte file of length 10
serialtest.close()
</code>

This gives me the following error triggered at the serialtest.write()
line:
IOException
at System.IO.Ports.SerialStream.WinIOError()
at System.IO.Ports.SerialStream.Write()
at System.IO.Ports.SerialPort.Write()
at DeviceApplication3.Form1.tester()
at DeviceApplication3.Button1_click()
....

It also produces no IR transmission. I also tried switching to COM2,
and while this gave me no errors, it also produced no IR transmission.

Thanks for your help,

Ryan

.

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