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BoardManager.js
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BoardManager.js
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"use strict";
const EventEmitter = require("events").EventEmitter;
const Board = require("./Board");
const RtuConnection = require("./RtuConnection");
const TcpConnection = require("./TcpConnection");
const debug = require('debug');
const info = debug('unipi-neuron:boards:info');
const warn = debug('unipi-neuron:boards:warn');
const log = debug('unipi-neuron:boards:log');
const error = debug('unipi-neuron:boards:error');
/**
* The board managers initiates boards based on the given config.
*/
class BoardManager extends EventEmitter {
/**
* Constructor
*
* @param {[{}]} config
* Each object should contain these properties:
* - name: 'local' (Defaults to local, but should be something different if there is more than one board)
* - type: 'tcp' or 'rtu'
* - ip: '127.0.0.1' (if type is tcp)
* - port: '502' (if type is tcp)
* - socket: '/dev/extcomm/0/0' (if type is socket)
* - id: 15 (if type is socket)
* - groups: 3 (Normally 1 for S type and extension boards, 2 for M type boards and 3 for L type boards)
* - interval: 100 (The interval in milliseconds at which to update the board values)
*/
constructor(config) {
super();
this.boards = {};
for (let i = 0; i < config.length; i++) {
this.init(config[i]);
}
}
/**
* Initiates a single board
*
* @param {{}} config
* A single object from the constructor config array.
*/
init(config) {
let name = 'local';
let id = 0;
let connection = {};
if (config.name) {
name = config.name;
}
if (config.id) {
id = config.id;
}
// Switch between tcp and rtu connections.
switch (config.type) {
case 'tcp':
connection = new TcpConnection(config.ip, config.port);
break;
default:
connection = new RtuConnection(config.socket);
}
// Create a new board
let board = new Board(connection, id, config.groups);
// Update the board state according to the config interval.
setInterval(() => {
board.updateState();
}, config.interval);
// Update the board count according to the config interval (times five).
setInterval(() => {
board.updateCount();
}, (config.interval * 5));
// Forward the board update event.
board.on('update', (id, value) => {
this.emit('update', name + '-' + id, value);
});
// Add the board to the boards variable for later reference.
this.boards[name] = board;
}
/**
* Convert a given string id to an id object with a board name and io id.
*
* @param id
* e.g. local-DO1.1
* @returns {{}}
*/
id(id) {
let result = {};
let arr = id.split('-');
result.board = arr[0];
result.id = arr[1];
return result;
}
/**
* Set an io to the given value
*
* @param id
* e.g. local-DO1.1
* @param {boolean} value
*/
set(id, value) {
id = this.id(id);
this.boards[id.board].set(id.id, value);
}
/**
* Get the value of the given io id.
*
* @param id
* e.g. local-DO1.1
*/
getState(id) {
id = this.id(id);
return this.boards[id.board].getState(id.id);
}
/**
* Get the value of the given io id.
*
* @param id
* e.g. local-DI1.1
*/
getCount(id) {
id = this.id(id);
return this.boards[id.board].getCount(id.id);
}
/**
* Gets all io's in all initiated boards.
*
* @returns {{}}
*/
getAllStates() {
let data = {};
for (let name in this.boards) {
if (this.boards.hasOwnProperty(name)) {
for (let id in this.boards[name].state) {
if (this.boards[name].state.hasOwnProperty(id)) {
data[name + '-' + id] = this.boards[name].state[id];
}
}
}
}
return data;
}
/**
* Gets all io's in all initiated boards.
*
* @returns {{}}
*/
getAllCounts() {
let data = {};
for (let name in this.boards) {
if (this.boards.hasOwnProperty(name)) {
for (let id in this.boards[name].counter) {
if (this.boards[name].counter.hasOwnProperty(id)) {
data[name + '-' + id] = this.boards[name].counter[id];
}
}
}
}
return data;
}
}
module.exports = BoardManager;