Two demonstration command-line utilites that utilise the libmnd library.

The binary images and include files for the library can be found at: https://github.com/victronenergy/libmnd

Installation:
1. Library: move the lib/libmnd.so.* file renamed as libmnd.so to a directory on your LD_LIBRARY_PATH
2. Utilites: move the bin/mnd*.* files renamed as mnd* to a directory on your PATH

Usage:

mndd com|can|ngt [device [speed]]
  Default Input from stdin, Output to stdout
  Default decoding is N0183
  com: N0183 input from com port (ASCII data)
    (if no device, input from text file/pipe on stdin)
  ngt: N2000 input from Actisense NGT-1 (Byte aligned binary data)
    (if no device, input from actisense-serial log file/pipe on stdin)
  can: N2000 input from SocketCAN (Byte aligned binary data)
    (if no device, input from candump log file/pipe on stdin)

Example:
# mndd can can0
===========================
Marine Network Data Decoder
===========================
ISO Request - PGN: 59904, Priority: 6, DST: 1, SRC: 1
    PGN: 60928
ISO Address Claim - PGN: 60928, Priority: 6, DST: 255, SRC: 1
    Unique number: 0   Manufacturer: Victron Energy  ECU instance: 0  Function instance: 0
    Function code: 130  Device class: 120  Generic instance: 0  Industry group: Marine

------------------------------------------------------------------------------------------

mnde
  Data format: [SA>DA,] <PGN>, <parameter>, <parameter>, ...
    Optional SA>DA pair. <PGN> must be an integer
    <parameter> fields can be numbers or quoted strings
    The values "-", "n/a" & "error" can be used for integer fields
    Blank fields can be used for unavailable or reserved values
    Lines beginning with '#' are comments and echoed to output
    Dates should be integers in the form: YYYYMMDD
    Times should be integers in the form: HHMMSS

Example:
# mnde
===========================
Marine Network Data Encoder
===========================
127744 3, 1, 0.1, 24
Payload bytes:
  03 01 01 00 18 00 00 00 
  
CAN frames:
  99F30000 [8] 03 01 01 00 18 00 00 00 

Check decodes:
AC Power/Current - Phase A - PGN: 127744, Priority: 6, DST: 0, SRC: 0
    SID: 3  Connection: 1  AC current: 0.10A  Power: 24W
127744, 3, 1, 0.1, 24