I was just throwing a test app together in C# to try communicating with a microcontroller serially.
Enumerate the com ports (COM1, COM5 and COM6)
... but any attempt to open one ends in IOException.
I did see that there was a problem with the .NET CF 2.0 in respect to some like this, but it was apparently fixed in SP2 for 2.0. I have the rolled up changes applied to platform builder and completely rebuilt the basic gumstix os design.
Anyone else have trouble with this and if you did, how did you get out of it?