Bill David,
I do not have the Wavelet addon. When I disable the wavelet parts of the code, it runs indefinitely. Well, at least 30 seconds.
Have you checked for errors from the Wavelet Denoise VI? You do not have the error terminals wired. One reason this is a concern is that you probably get zero Bytes at Port at least occasionally and the filter and Wavelet VIs may not be happy with null inputs.
Generally it does not make sense to use termination characters and Bytes at Port at the same time. If your device uses termination characters, set the Byte Count input to a value larger than the longest expected message and wait for the termination character to end the read. Then you always get a complete message (except possibly the first iteration).
Your array code makes no sense. You initialize the shift register with an empty array and then never put anything else into the shift register. You append an array of U8 from the VISA Read to the empty array of DBL, then transpose the array and extract the first row. This gets a two element array containing a zero and the first element of the Byte Array. The filter will not produce meaningful results when you feed it data which is 50% wrong and the rest occurs one element at a time. Plus you lose all but the first element from every VISA Read.
You have the filters set for 1000 Hz sampling. The serial port speed is set to 9600 baud. That means that you can read one byte every 1.04 ms or slower. You cannot get 1000 Hz sampled data through the serial port.
But, I do not know why it stops.
Lynn
