: Verifies an package of BYTES ultil their length - 2 and returns True if the value calculated is the same on that is stored in the last 2 bytes of the package.

If the Pkg has 10 bytes of length, it will calculate the CRC using the first 8 bytes and it will check the result with bytes 9 and 10 of Pkg. The byte number 9 is the most significative.

Parameters

Pkg

BYTES. Buffer that stores the data that will be checked the CRC-16. Must have at least 2 bytes of length.

Returns

True if the CRC-16 calculated is the same that is stored on the last 2 bytes of Pkg.

: Calculate the CRC-16 of the package until their size - 2. If the package has 10 bytes of length, it will use to calculate the first 8 bytes and will store the result of the calculation on bytes 9 and 10. The byte number 9 is the most significative.

Parameters

Pkg

BYTES. Buffer that contains the data that will be used to calculate the CRC-16 and that will store the result on the last 2 bytes. Must have at least 2 bytes of length.

Returns

A Cardinal number with the CRC-16 calculated with length of Pkg - 2.