[IronPython] Accessing Serial Port from IronPython driven Webpage

[Kurt A. Richardson]

  Hi All

I wonder if anyone has tried to access the serial port from a web app 
using Iron Python.  I have a simple default webpage which is using 
IronPython as the code behind.  My 'FanOn' function calls a little 
IronPython script that opens up the serial port and sends an ZigBee 
communications packet to a little home made device which would then turn 
a fan on.

I have found a web page that describes how to access the Serial port on 
the server using C#:

http://social.msdn.microsoft.com/forums/en-US/netfxbcl/thread/a5ff20cf-0bb5-4a3e-aed4-24c6290f66cd/

But I don't know how to translate this into IronPython.  In my FanOn 
function I have:

sx = SecurityPermission(SecurityPermissionFlag.UnmanagedCode)
sx.Assert()

after importing System.Security.Permissions

However I don't know how to decorate the function itself with:

[SuppressUnmanagedCodeSecurityAttribute()]

Any ideas would be greatly appreciated.

Kind regards,

Kurt

PS A simplified version of my FanOn script which is containined in a 
Default.aspx.py file behind Default.aspx:

def FanOn(sender, e):
     sx = SecurityPermission(SecurityPermissionFlag.UnmanagedCode)
     sx.Assert()
     sp = serial_ports.port('COM4')
     sp.open()
     sp.write_packet('7E001017060013A20040645580FFFE024431053B')
     sp.close()
     lblResponse.Text = "Fan successfully turned on"