Closing Serial Port on Stop/Abort

[CasonSwRI]

Whenever my program is stopped using the abort button labview gives it does not get a chance to close the serial port, thus making other programs not able to use the serial port. Is there a way I can execute some code when stopping my program aside from making my own stop button?

[Dennis_Knutson]

The abort button is not meant to be used as anything other than a debug tool. The correct way to stop you program is to have a stop button or use the event structure to capture the application exit event. I would recomend that for the user, the toolbar not be visible at all.

[Broken_Arrow]

Dennis is spot on. Hide the entire tool bar from the user. The abort is a hard exit - your ports and all of your controls don't have a chance against it. Attached is a jpeg, showing a common method I use to close the ports, and do some general "housekeeping" on Exit. (I assume you are using VISA).

Message Edited by Broken Arrow on 06-27-2005 09:41 AM

[CasonSwRI]

I was unaware that a housekeeping case could be made like that. Seems like there would be a way to do things on exit easily, and there it is. Thanks for the post!

[Dennis_Knutson]

It's actually easier with the event structure. If you have a stop button, in the value change event for the button, you just have to put your cleanup code. It does not have to be outside the main while loop.

[Broken_Arrow]

You say tomato

[EdDickens]

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You say tomato

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If you've never heard that song, it doesn't make sense when you read it. 😉

[tst]

Potato.

[CasonSwRI]

Tangent.

[EdDickens]

hehe, sorry, couldn't resist.

I was ststioned in Japan for a couple years and heard that song in a Karaoke bar being sung by a couple of the local folks and they were pronouncing the "tomato" and "potato" the same. It was good for a laugh at the time.

Ed