Hello!I'm using IMAQ with VB and IEEE1394 camera. My problem is folowing.When I start Trigger Mode 1 and start grabing picture, I yust cant stop triger mode,because all buttons are inactive. I must push Stop Acquisition and then one or more times activatetrigger. Is there any other solution to normaly get out of Trigger mode and yust stop it.Can anyone provide any solution?Regards!

The VB implementation is very synchronous by nature. That means once you have started calling GetImage or Grab, you are waiting for a buffer. Until a buffer arrives or a timeout occurs, there is no way to stop the acquisition. So in order not to block in this synchronous environment, try not to call GetImage unless you have to. Here is my suggestion.Configure your acquisition the same way you would normally do. Next you start the acquisition loop. Instead of calling (and blocking) into GetImage or Grab, try polling the last transferred buffer number. This is done by calling GetAttributeCW with the attribute IMG1394_ATTR_LAST_TRANSFERRED_BUFFER_NUM. If the buffer number has changed since the last poll, then go ahead and call GetImage or Grab and do processing as normal. If the buffer number has not changed, then sleep for a short duration (1ms). The short sleep is very important as not to spin your CPU waiting for a frame to arrive. This way you will be able to handle frames when they arrive, but also be able to exit immediately when you want to.without driving a trigger.Hope this helps,JohannS

Machine Vision

IEEE 1394 Camera Trigger Mode 1 Problem

Solved!

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Hello!

I'll recheck all situation again and then write latest informations!

Regards!

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Hello!

I have find the problem. It was my atupid mistake.....

Thanks all for help it works OK...

Regards!

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Machine Vision

IEEE 1394 Camera Trigger Mode 1 Problem

Re: IEEE 1394 Camera Trigger Mode 1 Problem

Re: IEEE 1394 Camera Trigger Mode 1 Problem