Read only specific byte

I have a continuous flow of incoming data through my serial port. Basically I want to Labview to wait for the '08' byte to arrive to the serial port and then read this and the two following bytes.

The problem is that I have no idea how to do to isolate this specific section of bytes from a stream of continuous data. It does not appear on a regular basis (only when an event occurs on the device), and I have to be able to read it seems (not only the first time) every time.

I have used the VISA read / write process before, but never for something like that, and I'm really at a loss. Any help would be much appreciated.

Brian

You could configure byte 08 as a character of endpoint and activate the termination characters.  Read a large number of bytes.  The reading will be either timeout, acquire the large numbers of bytes, or return to what she received up to and including the 08.  Now, if you want to read a specific number of bytes after that, then a reading of this number of bytes.

Probably best is to simply read the serial port at all times and search for byte 08 that may appear in the string and to analyze the data accordingly based on the place where 08 occurs.

Tags: NI Software

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