I have been trying to get a small serial application to run under Windows Embedded Standard using Com1. Simple checking of the input queue is too slow for the small messages that are sent. I tried to use a com callback and while it works fine in XP, it seems to get stuck in the callback section in Windows Embedded. I then tried VISA and don't even get that far, although it works in XP fine. The callback did fix my speed issue, but obviuosly I need it to return to process the rest of my program. I have to force it closed because of it being stuck in the callback (or stuck somewhere). The vendor that installed Windows Embedded is willing to change the configuration if they knew what was needed.
