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Diffstat (limited to 'dgbuilder/core_nodes/hardware/35-arduino.js')
| -rw-r--r-- | dgbuilder/core_nodes/hardware/35-arduino.js | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/dgbuilder/core_nodes/hardware/35-arduino.js b/dgbuilder/core_nodes/hardware/35-arduino.js new file mode 100644 index 00000000..795e9907 --- /dev/null +++ b/dgbuilder/core_nodes/hardware/35-arduino.js @@ -0,0 +1,160 @@ +/** + * Copyright 2013,2014 IBM Corp. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + **/ + +module.exports = function(RED) { + "use strict"; + var util = require("util"); + var ArduinoFirmata = require('arduino-firmata'); + var fs = require('fs'); + var plat = require('os').platform(); + var portlist = ArduinoFirmata.list(function (err, ports) { + portlist = ports; + }); + + // The Board Definition - this opens (and closes) the connection + function ArduinoNode(n) { + RED.nodes.createNode(this,n); + this.device = n.device || null; + this.repeat = n.repeat||25; + //node.log("opening connection "+this.device); + var node = this; + node.board = new ArduinoFirmata(); + if (portlist.indexOf(node.device) === -1) { + node.warn("Device "+node.device+" not found"); + } + else { + node.board.connect(node.device); + } + + node.board.on('boardReady', function(){ + node.log("version "+node.board.boardVersion); + }); + + node.on('close', function() { + if (node.board) { + try { + node.board.close(function() { + node.log("port closed"); + }); + } catch(e) { } + } + }); + } + 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; + //this.repeat = this.serverConfig.repeat; + var node = this; + node.status({fill:"red",shape:"ring",text:"connecting"}); + + node.board.on('connect', function() { + node.status({fill:"green",shape:"dot",text:"connected"}); + //console.log("i",node.state,node.pin); + if (node.state == "ANALOG") { + node.board.on('analogChange', function(e) { + if (e.pin == node.pin) { + var msg = {payload:e.value, topic:"A"+e.pin}; + node.send(msg); + } + }); + + } + else { + node.board.pinMode(node.pin, ArduinoFirmata.INPUT); + node.board.on('digitalChange', function(e) { + if (e.pin == node.pin) { + var msg = {payload:e.value, topic:e.pin}; + node.send(msg); + } + }); + } + }); + } + else { + util.log("[Firmata-arduino] port not configured"); + } + } + 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:"connecting"}); + + node.board.on('connect', function() { + node.status({fill:"green",shape:"dot",text:"connected"}); + //console.log("o",node.state,node.pin); + node.board.pinMode(node.pin, node.state); + node.on("input", function(msg) { + if (node.state == "OUTPUT") { + if ((msg.payload == true)||(msg.payload == 1)||(msg.payload.toString().toLowerCase() == "on")) { + node.board.digitalWrite(node.pin, true); + } + if ((msg.payload == false)||(msg.payload == 0)||(msg.payload.toString().toLowerCase() == "off")) { + node.board.digitalWrite(node.pin, false); + } + } + if (node.state == "PWM") { + msg.payload = msg.payload * 1; + if ((msg.payload >= 0) && (msg.payload <= 255)) { + //console.log(msg.payload, node.pin); + node.board.servoWrite(node.pin, msg.payload); + } + } + if (node.state == "SERVO") { + msg.payload = msg.payload * 1; + if ((msg.payload >= 0) && (msg.payload <= 180)) { + //console.log(msg.payload, node.pin); + node.board.servoWrite(node.pin, msg.payload); + } + } + }); + }); + } + else { + util.log("[Firmata-arduino] port not configured"); + } + } + RED.nodes.registerType("arduino out",DuinoNodeOut); + + RED.httpAdmin.get("/arduinoports",function(req,res) { + ArduinoFirmata.list(function (err, ports) { + //console.log(JSON.stringify(ports)); + res.writeHead(200, {'Content-Type': 'text/plain'}); + res.write(JSON.stringify(ports)); + res.end(); + }); + }); +} |