Hello guys, I am working on an RFID, and i need to send a CRC-16 to the reader in the form of a command. I have an example of the crc-16 used by the manufacturer however i have no knowledge of C++ language and some parameters are not clear. Maybe if someone has experience in dealing with CRC-16 can help me out? I attached a snippet of the VI i am using that contains the CRC-16 calculation and the example given in the reader's manual. Is it possible to check them out and tell me if my VI is correct? Because i am not receiving a reading from the RFID and i am sure the rest of my parameters are correct. Thank you, Fadi

More than likely, you will also have to disable the termination character on both the VISA READ and WRITE functions.

Oops, I didn't optimize the comm part. To read the response, first read one byte (VISA byte count = 1). The result is the length of the rest of the message (as u8). That's also your VISA byte count for your next (and final) VISA read. No more loop, no more "bytes at port". No more guessing at when the message is ending. You know when it ends. This is a very efficient protocol.

This is how I would do it, based on the docs: Oops, didn't optimize the read. See the post below.

LabVIEW

CRC-16 Calculation

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Never mind, it showed up again. Thanks again guys.

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LabVIEW

CRC-16 Calculation

Re: CRC-16 Calculation