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Originally Posted by Peter H
Today, I erased the LabView GUI and reloaded it with the 1/25/06 CMUCam2 demo. Now, and also last night, I have completely different intermittent failures.
Sometimes, I can Grab Frame OK. The rest of the time, I Grab Frame, the red LED flashes, the blue progress bar advances to the end, the progress bar disappears, a partial frame shows, and an error box appears "The application is closing because of a reported error ...". The status code is -1073807252. The status source is "VISA Read in get picture.vi>CMUcam2.vi>CMUcam2GUI.vi" I had to expand the status box to read this.
I can click on the error box, it disappears, and the run icon reverts to not running. I can click on the run icon again, and repeat the process - sometimes it works, sometimes not.
What is my problem?
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That error means that you are overflowing the VISA serial buffer. That is why you get a partial frame before it fails. Are you using a slow computer? What kind of serial port? Are there any settings in the device manager's properties for your serial port that will allow you to increase the buffer that is used on the serial port?
I'll look at the code to see if there is anything that can be done to make the program less susceptible to the problem. One solution is to lower the Baud rate (which would need to be done both on the camera and in the application / MAX) but would make the frame grabbing even slower. Hopefully we can avoid having to do that.
Cheers!
-Joe