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node-red-nodes/hardware/Arduino/35-arduino.js

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module.exports = function(RED) {
"use strict";
var Board = require('firmata');
var SP = require('serialport');
// The Board Definition - this opens (and closes) the connection
function ArduinoNode(n) {
RED.nodes.createNode(this,n);
this.device = n.device || null;
var node = this;
node.board = Board(node.device, function(e) {
//console.log("ERR",e);
if ((e !== undefined) && (e.toString().indexOf("cannot open") !== -1) ) {
node.error(RED._("arduino.errors.portnotfound",{device:node.device}));
}
else if (e === undefined) {
node.board.on('ready', function() {
node.log(RED._("arduino.status.connected",{device:node.board.sp.path}));
if (RED.settings.verbose) {
node.log(RED._("arduino.status.version",{version:node.board.firmware.name+"-"+node.board.version.major+"."+node.board.version.minor}));
}
});
}
node.board.on('close', function() {
node.error(RED._("arduino.status.portclosed"));
});
});
node.on('close', function(done) {
if (node.board) {
try {
node.board.sp.close(function() {
done();
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if (RED.settings.verbose) { node.log(RED._("arduino.status.portclosed")); }
});
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}
catch(e) { done(); }
}
else { done(); }
});
}
RED.nodes.registerType("arduino-board",ArduinoNode);
// The Input Node
function DuinoNodeIn(n) {
RED.nodes.createNode(this,n);
this.buttonState = -1;
this.pin = n.pin;
this.state = n.state;
this.arduino = n.arduino;
this.serverConfig = RED.nodes.getNode(this.arduino);
if (typeof this.serverConfig === "object") {
this.board = this.serverConfig.board;
var node = this;
node.status({fill:"red",shape:"ring",text:"node-red:common.status.connecting"});
var doit = function() {
node.status({fill:"green",shape:"dot",text:"node-red:common.status.connected"});
if (node.state === "ANALOG") {
node.board.pinMode(node.pin, 0x02);
node.board.analogRead(node.pin, function(v) {
node.send({payload:v, topic:"A"+node.pin});
});
}
if (node.state === "INPUT") {
node.board.pinMode(node.pin, 0x00);
node.board.digitalRead(node.pin, function(v) {
node.send({payload:v, topic:node.pin});
});
}
if (node.state == "STRING") {
node.board.on('string', function(v) {
node.send({payload:v, topic:"string"});
});
}
// node.board.on('close', function() {
// node.board.removeAllListeners();
// node.status({fill:"grey",shape:"ring",text:"node-red:common.status.not-connected"});
// });
}
if (node.board.isReady) { doit(); }
else { node.board.on("ready", function() { doit(); }); }
node.on("close", function() {
if (node.tout) { clearTimeout(node.tout); }
})
}
else {
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this.warn(RED._("arduino.errors.portnotconf"));
}
}
RED.nodes.registerType("arduino in",DuinoNodeIn);
// The Output Node
function DuinoNodeOut(n) {
RED.nodes.createNode(this,n);
this.buttonState = -1;
this.pin = n.pin;
this.state = n.state;
this.arduino = n.arduino;
this.serverConfig = RED.nodes.getNode(this.arduino);
if (typeof this.serverConfig === "object") {
this.board = this.serverConfig.board;
var node = this;
node.status({fill:"red",shape:"ring",text:"node-red:common.status.connecting"});
var doit = function() {
node.status({fill:"green",shape:"dot",text:"node-red:common.status.connected"});
node.on("input", function(msg) {
if (node.state === "OUTPUT") {
node.board.pinMode(node.pin, 0x01);
if ((msg.payload === true)||(msg.payload.toString() == "1")||(msg.payload.toString().toLowerCase() == "on")) {
node.board.digitalWrite(node.pin, node.board.HIGH);
}
if ((msg.payload === false)||(msg.payload.toString() == "0")||(msg.payload.toString().toLowerCase() == "off")) {
node.board.digitalWrite(node.pin, node.board.LOW);
}
}
if (node.state === "PWM") {
node.board.pinMode(node.pin, 0x03);
msg.payload = parseInt((msg.payload * 1) + 0.5);
if ((msg.payload >= 0) && (msg.payload <= 255)) {
node.board.analogWrite(node.pin, msg.payload);
}
}
if (node.state === "SERVO") {
node.board.pinMode(node.pin, 0x04);
msg.payload = parseInt((msg.payload * 1) + 0.5);
if ((msg.payload >= 0) && (msg.payload <= 180)) {
node.board.servoWrite(node.pin, msg.payload);
}
}
if (node.state === "SYSEX") {
node.board.sysexCommand(msg.payload);
}
if (node.state === "STRING") {
node.board.sendString(msg.payload.toString());
}
});
// node.board.on('close', function() {
// node.status({fill:"grey",shape:"ring",text:"node-red:common.status.not-connected"});
// });
}
if (node.board.isReady) { doit(); }
else { node.board.on("ready", function() { doit(); }); }
node.on("close", function() {
if (node.tout) { clearTimeout(node.tout); }
})
}
else {
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this.warn(RED._("arduino.errors.portnotconf"));
}
}
RED.nodes.registerType("arduino out",DuinoNodeOut);
RED.httpAdmin.get("/arduinoports", RED.auth.needsPermission("arduino.read"), function(req,res) {
SP.list(function(error, ports) {
res.json(ports);
});
});
}