If I start with DSR connected to DTR and then break the connection, the pinchanged event fires just fine. However it executes several more times after I close the connection again. Is there something I need to do to "reset" the state of that pin so the event fires just once?
No, but I'm using the xxxHolding properties to tell which pin is asserted. My problem is once the Pinchanged event fires the first time, I get a series of subsequent firings where all pins are false. I can code around it, but it does cause a delay in the application. Also, is it normal for DCD to go on whenever one of the other control lines goes on? I thought DCD was an input?
Thanks for your help!
DCD is normally only used by modems (data carrier detect, only modems can detect a carrier). Non-modem devices often jumper that signal, most commonly to either DTR or DSR.
