Ok, here is a simple example of my thought process. We have two different tasks, one input and one output. We send our high pulse to the camera to take a picture. Then we continuoulsy poll the camera to see if its ready, as soon as its ready, send a second pulse. We repeat this loop every 200 ms.
The issues with this simple implementation, as with the others, is enforcing the 5hz rate. Windows is non-deterministic, so our timing may be off by a few ms. However, we avoid the issues from earlier because everything is software timed now.
Try this and see if it points you in the right direction.
Applications Engineer
National Instruments
