Class MergReply

  • All Implemented Interfaces:

    public class MergReply
    extends GridConnectReply
    Class for replies in a MERG GridConnect based message/reply protocol.

    The GridConnect protocol encodes messages as an ASCII string of up to 24 characters of the form: :ShhhhNd0d1d2d3d4d5d6d7;

    hhhh is the two byte (11 useful bits) header The S indicates a standard CAN frame :XhhhhhhhhNd0d1d2d3d4d5d6d7; The X indicates an extended CAN frame Strict

    Gridconnect protocol allows a variable number of header characters, e.g., a header value of 0x123 could be encoded as S123, X123, S0123 or X00000123.

    MERG hardware uses a fixed 4 or 8 byte header when sending GridConnectMessages to the computer. The 11 bit standard header is left justified in these 4 bytes. The 29 bit standard header is sent as <11 bit SID><0><1><0>< 18 bit EID> N or R indicates a normal or remote frame, in position 6 or 10 d0 - d7 are the (up to) 8 data bytes

    • Constructor Detail

      • MergReply

        public MergReply()
        Create new MergReply.
      • MergReply

        public MergReply​(java.lang.String s)
        Create new MergReply from String.
        s - Frame data to create MergReply from.
    • Method Detail

      • getHeader

        public int getHeader()
        Get the CAN header from MERG format in digits 2 to 9.
        getHeader in class GridConnectReply
        the CAN header as an int