mirror of
https://github.com/node-red/node-red.git
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161 lines
6.0 KiB
JavaScript
161 lines
6.0 KiB
JavaScript
/**
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* Copyright 2013,2014 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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module.exports = function(RED) {
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"use strict";
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var ArduinoFirmata = require('arduino-firmata');
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var fs = require('fs');
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var portlist = ArduinoFirmata.list(function (err, ports) {
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portlist = ports;
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});
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// The Board Definition - this opens (and closes) the connection
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function ArduinoNode(n) {
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RED.nodes.createNode(this,n);
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this.device = n.device || null;
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this.repeat = n.repeat||25;
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//node.log("opening connection "+this.device);
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var node = this;
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node.board = new ArduinoFirmata();
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if (portlist.indexOf(node.device) === -1) {
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node.error("device "+node.device+" not found");
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}
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else {
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node.board.connect(node.device);
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}
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node.board.on('boardReady', function(){
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if (RED.settings.verbose) { node.log("version "+node.board.boardVersion); }
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});
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node.on('close', function(done) {
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if (node.board) {
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try {
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node.board.close(function() {
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done();
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if (RED.settings.verbose) { node.log("port closed"); }
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});
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} catch(e) { done(); }
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} else { done(); }
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});
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}
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RED.nodes.registerType("arduino-board",ArduinoNode);
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// The Input Node
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function DuinoNodeIn(n) {
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RED.nodes.createNode(this,n);
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this.buttonState = -1;
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this.pin = n.pin;
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this.state = n.state;
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this.arduino = n.arduino;
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this.serverConfig = RED.nodes.getNode(this.arduino);
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if (typeof this.serverConfig === "object") {
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this.board = this.serverConfig.board;
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var node = this;
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node.status({fill:"red",shape:"ring",text:"connecting"});
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node.board.on('connect', function() {
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node.status({fill:"green",shape:"dot",text:"connected"});
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//console.log("i",node.state,node.pin);
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if (node.state == "ANALOG") {
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node.board.on('analogChange', function(e) {
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if (e.pin == node.pin) {
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var msg = {payload:e.value, topic:"A"+e.pin};
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node.send(msg);
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}
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});
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}
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if (node.state == "INPUT") {
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node.board.pinMode(node.pin, ArduinoFirmata.INPUT);
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node.board.on('digitalChange', function(e) {
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if (e.pin == node.pin) {
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var msg = {payload:e.value, topic:e.pin};
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node.send(msg);
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}
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});
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}
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if (node.state == "SYSEX") {
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node.board.on('sysex', function(e) {
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var msg = {payload:e, topic:"sysex"};
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node.send(msg);
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});
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}
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});
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}
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else {
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this.warn("port not configured");
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}
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}
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RED.nodes.registerType("arduino in",DuinoNodeIn);
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// The Output Node
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function DuinoNodeOut(n) {
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RED.nodes.createNode(this,n);
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this.buttonState = -1;
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this.pin = n.pin;
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this.state = n.state;
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this.arduino = n.arduino;
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this.serverConfig = RED.nodes.getNode(this.arduino);
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if (typeof this.serverConfig === "object") {
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this.board = this.serverConfig.board;
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var node = this;
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node.status({fill:"red",shape:"ring",text:"connecting"});
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node.board.on('connect', function() {
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node.status({fill:"green",shape:"dot",text:"connected"});
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//console.log("o",node.state,node.pin);
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node.board.pinMode(node.pin, node.state);
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node.on("input", function(msg) {
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if (node.state === "OUTPUT") {
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if ((msg.payload === true)||(msg.payload == 1)||(msg.payload.toString().toLowerCase() == "on")) {
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node.board.digitalWrite(node.pin, true);
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}
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if ((msg.payload === false)||(msg.payload === 0)||(msg.payload.toString().toLowerCase() == "off")) {
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node.board.digitalWrite(node.pin, false);
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}
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}
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if (node.state === "PWM") {
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msg.payload = msg.payload * 1;
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if ((msg.payload >= 0) && (msg.payload <= 255)) {
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node.board.analogWrite(node.pin, msg.payload);
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}
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}
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if (node.state === "SERVO") {
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msg.payload = msg.payload * 1;
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if ((msg.payload >= 0) && (msg.payload <= 180)) {
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node.board.servoWrite(node.pin, msg.payload);
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}
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}
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if (node.state === "SYSEX") {
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node.board.sysex(msg.payload);
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}
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});
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});
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}
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else {
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this.warn("port not configured");
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}
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}
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RED.nodes.registerType("arduino out",DuinoNodeOut);
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RED.httpAdmin.get("/arduinoports", RED.auth.needsPermission("arduino.read"), function(req,res) {
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ArduinoFirmata.list(function (err, ports) {
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res.json(ports);
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});
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});
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}
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