multiple eventCharacter in InstallComCallback in CVI

[bilg]

is there a way to have multiple eventCharacters in InstallComCallback in CVI. I want to trigger the callback if either char A OR char B is received.

thanks

[Chris Matthews]

No, you can only trigger of 1 specific character. What you would have to do is trigger off any character, and then check in the callback if it is one of the characters you are looking for.

Best Regards,

Chris Matthews
National Instruments

[bilg]

I am not sure what is going on in these serial routines, so I ask if invoking the callback on each char is very inefficient.

Also, is it good etiquette or a bad use of resources to thank a responder if the question seems to be answered and the conversation over?

thanks

[Chris Matthews]

If you are really trying to run at close to max rates for the serial bus, checking every character may seem cause efficiency problems that slow you down. At mid-range serial rates (9600-56000 or so), it shouldn't be noticable overhead.

As for ediquette, I'm sure any responder would value hearing they helped with your question. Feel free to post back that way, or just use the ranking system for the response.

Chris

[bilg]

ok
I have not decided how to handle this yet, but the info is helpful

thanks