Nonblocking Read from Com\0

I am attempting to set up a nonblocking read from com\0 which is hyperterminal input. I know that I can create the socket as nonblocking, but can I change the blocking socket which I’ve created to nonblocking and then back to blocking when I’m done? If so, how? Tex

You can find an example of this in the dialog.c module that is part of the platform dependent BSP code. Look for the function called NAOpenDialog() this is used to change between blocking and non-blocking serial IO.