Package com.dalsemi.onewire.utils

Class CRC16

java.lang.Object
com.dalsemi.onewire.utils.CRC16
public class CRC16 extends Object
CRC16 is a class containing an implementation of the Cyclic-Redundency-Check (CRC) CRC16. The CRC16 is used in iButton memory packet structure.

CRC16 is based on the polynomial = X^16 + X^15 + X^2 + 1.

  • Method Summary

    Modifier and Type
    Method
    Description
    static int
    compute(byte[] dataToCrc)
    Perform the CRC16 on an array of data elements based on a zero seed.
    static int
    compute(byte[] dataToCrc, int seed)
    Perform the CRC16 on an array of data elements based on the provided seed.
    static int
    compute(byte[] dataToCrc, int off, int len)
    Perform the CRC16 on an array of data elements based on a zero seed.
    static int
    compute(byte[] dataToCrc, int off, int len, int seed)
    Perform the CRC16 on an array of data elements based on the provided seed.
    static int
    compute(int dataToCrc)
    Perform the CRC16 on the data element based on a zero seed.
    static int
    compute(int dataToCrc, int seed)
    Perform the CRC16 on the data element based on the provided seed.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Method Details

    • compute

      public static int compute(int dataToCrc)
      Perform the CRC16 on the data element based on a zero seed.

      CRC16 is based on the polynomial = X^16 + X^15 + X^2 + 1.

      Parameters:
      dataToCrc - data element on which to perform the CRC16
      Returns:
      CRC16 value

    • compute

      public static int compute(int dataToCrc, int seed)
      Perform the CRC16 on the data element based on the provided seed.

      CRC16 is based on the polynomial = X^16 + X^15 + X^2 + 1.

      Parameters:
      dataToCrc - data element on which to perform the CRC16
      Returns:
      CRC16 value

    • compute

      public static int compute(byte[] dataToCrc)
      Perform the CRC16 on an array of data elements based on a zero seed.

      CRC16 is based on the polynomial = X^16 + X^15 + X^2 + 1.

      Parameters:
      dataToCrc - array of data elements on which to perform the CRC16
      Returns:
      CRC16 value

    • compute

      public static int compute(byte[] dataToCrc, int off, int len)
      Perform the CRC16 on an array of data elements based on a zero seed.

      CRC16 is based on the polynomial = X^16 + X^15 + X^2 + 1.

      Parameters:
      dataToCrc - array of data elements on which to perform the CRC16
      off - offset into the data array
      len - length of data to CRC16
      Returns:
      CRC16 value

    • compute

      public static int compute(byte[] dataToCrc, int off, int len, int seed)
      Perform the CRC16 on an array of data elements based on the provided seed.

      CRC16 is based on the polynomial = X^16 + X^15 + X^2 + 1.

      Parameters:
      dataToCrc - array of data elements on which to perform the CRC16
      off - offset into the data array
      len - length of data to CRC16
      seed - seed to use for CRC16
      Returns:
      CRC16 value

    • compute

      public static int compute(byte[] dataToCrc, int seed)
      Perform the CRC16 on an array of data elements based on the provided seed.

      CRC16 is based on the polynomial = X^16 + X^15 + X^2 + 1.

      Parameters:
      dataToCrc - array of data elements on which to perform the CRC16
      seed - seed to use for CRC16
      Returns:
      CRC16 value