org.avineas.comli

Interface Master

All Known Implementing Classes:

MasterImpl

public interface Master

Master interface for COMLI. This is the main entry point for that part of the application that acts as a COMLI master. Users should look up this interface and use it appropriately.

Author:

A. van Wijngaarden

Method Summary

Methods

Modifier and Type	Method and Description
byte[]	request(int destination, byte type, int startAddress, int size) Request data from a slave.
boolean	transfer(int destination, byte type, int startAddress, byte[] contents, int offset, int size) Perform a data transfer to a slave node.

Method Detail

transfer

boolean transfer(int destination,
               byte type,
               int startAddress,
               byte[] contents,
               int offset,
               int size)

Perform a data transfer to a slave node.

Parameters:

destination - The slave this message is meant for. Since slaves are numbered, this is the number of the slave (> 0)

type - The transfer type. One of the transfer types according to the COMLI specification

startAddress - The start address where the IO should be written

contents - The contents of the addresses

offset - The offset in the buffer to start the data transfer

size - The size of the buffer to send

Returns:

Indication whether the transfer was successful. True means OK

request

byte[] request(int destination,
             byte type,
             int startAddress,
             int size)

Request data from a slave.

Parameters:

destination - The destination/slave number

type - The type of the message. One of the request types according to the COMLI specification

startAddress - The start address

size - The size to request

Returns:

The data that was sent back by the slave as a response to the request. Null if no reply was received