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add serialport to node-red-nodes, fix lint etc etc

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dceejay 2015-06-13 18:45:38 +01:00
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<!--
Copyright 2013,2015 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.
-->
<script type="text/x-red" data-template-name="serial in">
<div class="form-row node-input-serial">
<label for="node-input-serial"><i class="fa fa-random"></i> Serial Port</label>
<input type="text" id="node-input-serial">
</div>
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
</script>
<script type="text/x-red" data-help-name="serial in">
<p>Reads data from a local serial port.</p>
<p>Can either <ul><li>wait for a "split" character (default \n). Also accepts hex notation (0x0a).</li>
<li>wait for a timeout in milliseconds for the first character received</li>
<li>wait to fill a fixed sized buffer</li></ul></p>
<p>It then outputs <b>msg.payload</b> as either a UTF8 ascii string or a binary Buffer object.</p>
<p>If no split character is specified, or a timeout or buffer size of 0, then a stream of single characters is sent - again either as ascii chars or size 1 binary buffers.</p>
</script>
<script type="text/javascript">
RED.nodes.registerType('serial in',{
category: 'input',
defaults: {
name: {name:""},
serial: {type:"serial-port",required:true}
},
color:"BurlyWood",
inputs:0,
outputs:1,
icon: "serial.png",
label: function() {
var serialNode = RED.nodes.node(this.serial);
return this.name||(serialNode?serialNode.label().split(":")[0]:"serial");
},
labelStyle: function() {
return this.name?"node_label_italic":"";
}
});
</script>
<script type="text/x-red" data-template-name="serial out">
<div class="form-row node-input-serial">
<label for="node-input-serial"><i class="fa fa-random"></i> Serial Port</label>
<input type="text" id="node-input-serial">
</div>
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
</script>
<script type="text/x-red" data-help-name="serial out">
<p>Provides a connection to an outbound serial port.</p>
<p>Only the <b>msg.payload</b> is sent.</p>
<p>Optionally the new line character used to split the input can be appended to every message sent out to the serial port.</p>
</script>
<script type="text/javascript">
RED.nodes.registerType('serial out',{
category: 'output',
defaults: {
name: {name:""},
serial: {type:"serial-port",required:true}
},
color:"BurlyWood",
inputs:1,
outputs:0,
icon: "serial.png",
align: "right",
label: function() {
var serialNode = RED.nodes.node(this.serial);
return this.name||(serialNode?serialNode.label().split(":")[0]:"serial");
},
labelStyle: function() {
return this.name?"node_label_italic":"";
}
});
</script>
<script type="text/x-red" data-template-name="serial-port">
<div class="form-row">
<label for="node-config-input-serialport"><i class="fa fa-random"></i> Serial Port</label>
<input type="text" id="node-config-input-serialport" style="width:60%;" placeholder="/dev/ttyUSB0"/>
<a id="node-config-lookup-serial" class="btn"><i id="node-config-lookup-serial-icon" class="fa fa-search"></i></a>
</div>
<div class="form-row">
<table><tr>
<td width="102px"><i class="fa fa-wrench"></i> Settings</td>
<td width="100px">Baud Rate</td>
<td width="80px">Data Bits</td>
<td width="80px">Parity</td>
<td width="80px">Stop Bits</td>
</tr><tr><td>&nbsp;</td>
<td>
<select type="text" id="node-config-input-serialbaud" style="width: 100px;">
<option value="115200">115200</option>
<option value="57600">57600</option>
<option value="38400">38400</option>
<option value="19200">19200</option>
<option value="9600">9600</option>
<option value="4800">4800</option>
<option value="2400">2400</option>
<option value="1800">1800</option>
<option value="1200">1200</option>
<option value="600">600</option>
<option value="300">300</option>
<option value="200">200</option>
<option value="150">150</option>
<option value="134">134</option>
<option value="110">110</option>
<option value="75">75</option>
<option value="50">50</option>
</select>
</td><td>
<select type="text" id="node-config-input-databits" style="width: 80px;">
<option value="8">8</option>
<option value="7">7</option>
<option value="6">6</option>
<option value="5">5</option>
</select>
</td><td>
<select type="text" id="node-config-input-parity" style="width: 80px;">
<option value="none">None</option>
<option value="even">Even</option>
<option value="mark">Mark</option>
<option value="odd">Odd</option>
<option value="space">Space</option>
</select>
</td><td>
<select type="text" id="node-config-input-stopbits" style="width: 80px;">
<option value="2">2</option>
<option value="1">1</option>
</select>
</td>
</tr></table><br/>
<div class="form-row">
<label><i class="fa fa-sign-in"></i> Input</label>
</div>
<div class="form-row" style="padding-left: 10px;">
Split input
<select type="text" id="node-config-input-out" style="margin-left: 5px; width:200px;">
<option value="char">on the character</option>
<option value="time">after a timeout of</option>
<option value="count">into fixed lengths of</option>
</select>
<input type="text" id="node-config-input-newline" style="width:50px;">
<span id="node-units"></span>
</div>
<div class="form-row" style="padding-left: 10px;">
and deliver
<select type="text" id="node-config-input-bin" style="margin-left: 5px; width: 150px;">
<option value="false">ascii strings</option>
<option value="bin">binary buffers</option>
</select>
</div>
<br/>
<div id="node-config-addchar">
<div class="form-row">
<label><i class="fa fa-sign-out"></i> Output</label>
</div>
<div class="form-row">
<input style="width: 30px;margin-left: 10px; vertical-align: top;" type="checkbox" id="node-config-input-addchar"><label style="width: auto;" for="node-config-input-addchar">add split character to output messages</label>
</div>
</div>
<div class="form-tips" id="tip-split">Tip: the "Split on" character is used to split the input into separate messages. It can also be added to every message sent out to the serial port.</div>
<div class="form-tips" id="tip-bin" hidden>Tip: In timeout mode timeout starts from arrival of first character.</div>
</script>
<script type="text/javascript">
RED.nodes.registerType('serial-port',{
category: 'config',
defaults: {
//name: {value:""},
serialport: {value:"",required:true},
serialbaud: {value:57600,required:true},
databits: {value:8,required:true},
parity: {value:"none",required:true},
stopbits: {value:1,required:true},
newline: {value:"\\n"},
bin: {value:"false"},
out: {value:"char"},
addchar: {value:false}
},
label: function() {
this.serialbaud = this.serialbaud || 57600;
this.databits = this.databits || 8;
this.parity = this.parity || 'none';
this.stopbits = this.stopbits || 1;
return this.serialport+":"+this.serialbaud+"-"+this.databits+this.parity.charAt(0).toUpperCase()+this.stopbits;
},
oneditprepare: function() {
var previous = null;
$("#node-config-input-out").on('focus', function () { previous = this.value; }).change(function() {
if (previous == null) { previous = $("#node-config-input-out").val(); }
if ($("#node-config-input-out").val() == "char") {
if (previous != "char") { $("#node-config-input-newline").val("\\n"); }
$("#node-units").text("");
$("#node-config-addchar").show();
$("#tip-split").show();
$("#tip-bin").hide();
}
else if ($("#node-config-input-out").val() == "time") {
if (previous != "time") { $("#node-config-input-newline").val("0"); }
$("#node-units").text("ms");
$("#node-config-addchar").hide();
$("#node-config-input-addchar").val("false");
$("#tip-split").hide();
$("#tip-bin").show();
}
else {
if (previous != "count") { $("#node-config-input-newline").val(""); }
$("#node-units").text("chars");
$("#node-config-addchar").hide();
$("#node-config-input-addchar").val("false");
$("#tip-split").hide();
$("#tip-bin").hide();
}
});
try {
$("#node-config-input-serialport").autocomplete( "destroy" );
} catch(err) {
}
$("#node-config-lookup-serial").click(function() {
//$("#node-config-lookup-serial-icon").removeClass('fa fa-search');
//$("#node-config-lookup-serial-icon").addClass('fa fa-spinner');
$("#node-config-lookup-serial").addClass('disabled');
$.getJSON('serialports',function(data) {
//$("#node-config-lookup-serial-icon").addClass('fa fa-search');
//$("#node-config-lookup-serial-icon").removeClass('fa fa-spinner');
$("#node-config-lookup-serial").removeClass('disabled');
var ports = [];
$.each(data, function(i, port){
ports.push(port.comName);
});
$("#node-config-input-serialport").autocomplete({
source:ports,
minLength:0,
close: function( event, ui ) {
$("#node-config-input-serialport").autocomplete( "destroy" );
}
}).autocomplete("search","");
});
});
}
});
</script>

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/**
* Copyright 2013,2015 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 settings = RED.settings;
var events = require("events");
var serialp = require("serialport");
var bufMaxSize = 32768; // Max serial buffer size, for inputs...
// TODO: 'serialPool' should be encapsulated in SerialPortNode
function SerialPortNode(n) {
RED.nodes.createNode(this,n);
this.serialport = n.serialport;
this.newline = n.newline;
this.addchar = n.addchar || "false";
this.serialbaud = parseInt(n.serialbaud) || 57600;
this.databits = parseInt(n.databits) || 8;
this.parity = n.parity || "none";
this.stopbits = parseInt(n.stopbits) || 1;
this.bin = n.bin || "false";
this.out = n.out || "char";
}
RED.nodes.registerType("serial-port",SerialPortNode);
function SerialOutNode(n) {
RED.nodes.createNode(this,n);
this.serial = n.serial;
this.serialConfig = RED.nodes.getNode(this.serial);
if (this.serialConfig) {
var node = this;
node.port = serialPool.get(this.serialConfig.serialport,
this.serialConfig.serialbaud,
this.serialConfig.databits,
this.serialConfig.parity,
this.serialConfig.stopbits,
this.serialConfig.newline);
node.addCh = "";
if (node.serialConfig.addchar == "true" || node.serialConfig.addchar === true) {
node.addCh = this.serialConfig.newline.replace("\\n","\n").replace("\\r","\r").replace("\\t","\t").replace("\\e","\e").replace("\\f","\f").replace("\\0","\0"); // jshint ignore:line
}
node.on("input",function(msg) {
if (msg.hasOwnProperty("payload")) {
var payload = msg.payload;
if (!Buffer.isBuffer(payload)) {
if (typeof payload === "object") {
payload = JSON.stringify(payload);
} else {
payload = payload.toString();
}
payload += node.addCh;
} else if (node.addCh !== "") {
payload = Buffer.concat([payload,new Buffer(node.addCh)]);
}
node.port.write(payload,function(err,res) {
if (err) {
var errmsg = err.toString().replace("Serialport","Serialport "+node.port.serial.path);
node.error(errmsg,msg);
}
});
}
});
node.port.on('ready', function() {
node.status({fill:"green",shape:"dot",text:"connected"});
});
node.port.on('closed', function() {
node.status({fill:"red",shape:"ring",text:"not connected"});
});
} else {
this.error("missing serial config");
}
this.on("close", function(done) {
if (this.serialConfig) {
serialPool.close(this.serialConfig.serialport,done);
} else {
done();
}
});
}
RED.nodes.registerType("serial out",SerialOutNode);
function SerialInNode(n) {
RED.nodes.createNode(this,n);
this.serial = n.serial;
this.serialConfig = RED.nodes.getNode(this.serial);
if (this.serialConfig) {
var node = this;
node.tout = null;
var buf;
if (node.serialConfig.out != "count") { buf = new Buffer(bufMaxSize); }
else { buf = new Buffer(Number(node.serialConfig.newline)); }
var i = 0;
node.status({fill:"grey",shape:"dot",text:"unknown"});
node.port = serialPool.get(this.serialConfig.serialport,
this.serialConfig.serialbaud,
this.serialConfig.databits,
this.serialConfig.parity,
this.serialConfig.stopbits,
this.serialConfig.newline
);
var splitc;
if (node.serialConfig.newline.substr(0,2) == "0x") {
splitc = new Buffer([parseInt(node.serialConfig.newline)]);
} else {
splitc = new Buffer(node.serialConfig.newline.replace("\\n","\n").replace("\\r","\r").replace("\\t","\t").replace("\\e","\e").replace("\\f","\f").replace("\\0","\0")); // jshint ignore:line
}
this.port.on('data', function(msg) {
// single char buffer
if ((node.serialConfig.newline === 0)||(node.serialConfig.newline === "")) {
if (node.serialConfig.bin !== "bin") { node.send({"payload": String.fromCharCode(msg)}); }
else { node.send({"payload": new Buffer([msg])}); }
}
else {
// do the timer thing
if (node.serialConfig.out === "time") {
if (node.tout) {
i += 1;
buf[i] = msg;
}
else {
node.tout = setTimeout(function () {
node.tout = null;
var m = new Buffer(i+1);
buf.copy(m,0,0,i+1);
if (node.serialConfig.bin !== "bin") { m = m.toString(); }
node.send({"payload": m});
m = null;
}, node.serialConfig.newline);
i = 0;
buf[0] = msg;
}
}
// count bytes into a buffer...
else if (node.serialConfig.out === "count") {
buf[i] = msg;
i += 1;
if ( i >= parseInt(node.serialConfig.newline)) {
var m = new Buffer(i);
buf.copy(m,0,0,i);
if (node.serialConfig.bin !== "bin") { m = m.toString(); }
node.send({"payload":m});
m = null;
i = 0;
}
}
// look to match char...
else if (node.serialConfig.out === "char") {
buf[i] = msg;
i += 1;
if ((msg === splitc[0]) || (i === bufMaxSize)) {
var n = new Buffer(i);
buf.copy(n,0,0,i);
if (node.serialConfig.bin !== "bin") { n = n.toString(); }
node.send({"payload":n});
n = null;
i = 0;
}
}
else { node.log("should never get here"); }
}
});
this.port.on('ready', function() {
node.status({fill:"green",shape:"dot",text:"connected"});
});
this.port.on('closed', function() {
node.status({fill:"red",shape:"ring",text:"not connected"});
});
} else {
this.error("missing serial config");
}
this.on("close", function(done) {
if (this.serialConfig) {
serialPool.close(this.serialConfig.serialport,done);
} else {
done();
}
});
}
RED.nodes.registerType("serial in",SerialInNode);
var serialPool = (function() {
var connections = {};
return {
get:function(port,baud,databits,parity,stopbits,newline,callback) {
var id = port;
if (!connections[id]) {
connections[id] = (function() {
var obj = {
_emitter: new events.EventEmitter(),
serial: null,
_closing: false,
tout: null,
on: function(a,b) { this._emitter.on(a,b); },
close: function(cb) { this.serial.close(cb); },
write: function(m,cb) { this.serial.write(m,cb); },
}
//newline = newline.replace("\\n","\n").replace("\\r","\r");
var setupSerial = function() {
obj.serial = new serialp.SerialPort(port,{
baudrate: baud,
databits: databits,
parity: parity,
stopbits: stopbits,
parser: serialp.parsers.raw
},true, function(err, results) { if (err) { obj.serial.emit('error',err); } });
obj.serial.on('error', function(err) {
RED.log.error("serial port "+port+" error "+err);
obj._emitter.emit('closed');
obj.tout = setTimeout(function() {
setupSerial();
}, settings.serialReconnectTime);
});
obj.serial.on('close', function() {
if (!obj._closing) {
RED.log.error("serial port "+port+" closed unexpectedly");
obj._emitter.emit('closed');
obj.tout = setTimeout(function() {
setupSerial();
}, settings.serialReconnectTime);
}
});
obj.serial.on('open',function() {
RED.log.info("serial port "+port+" opened at "+baud+" baud "+databits+""+parity.charAt(0).toUpperCase()+stopbits);
if (obj.tout) { clearTimeout(obj.tout); }
//obj.serial.flush();
obj._emitter.emit('ready');
});
obj.serial.on('data',function(d) {
for (var z=0; z<d.length; z++) {
obj._emitter.emit('data',d[z]);
}
});
obj.serial.on("disconnect",function() {
RED.log.error("serial port "+port+" gone away");
});
}
setupSerial();
return obj;
}());
}
return connections[id];
},
close: function(port,done) {
if (connections[port]) {
if (connections[port].tout != null) {
clearTimeout(connections[port].tout);
}
connections[port]._closing = true;
try {
connections[port].close(function() {
RED.log.info("serial port closed");
done();
});
}
catch(err) { }
delete connections[port];
} else {
done();
}
}
}
}());
RED.httpAdmin.get("/serialports", RED.auth.needsPermission('serial.read'), function(req,res) {
serialp.list(function (err, ports) {
res.json(ports);
});
});
}

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Apache License
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http://www.apache.org/licenses/
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node-red-node-serialport
========================
<a href="http://nodered.org" target="_new">Node-RED</a> nodes to talk to an hardware Serial port.
**Note** : This is the same node as is/was in the core of Node-RED. If you already
have it installed you do NOT need this node.
Install
-------
Run the following command in the root directory of your Node-RED install, usually
this is ~/.node-red .
npm install node-red-node-serialport
During install there may be multiple messages about optional compilation.
These may look like failures... as they report as failure to compile errors -
but often are warnings and the node will continue to install and, assuming nothing else
failed, you should be able to use it. Occasionally some platforms *will* require
you to install the full set of tools in order to compile the underlying package.
Usage
-----
Provides two nodes - one to receive messages, and one to send.
###Input
Reads data from a local serial port.
Clicking on the search icon will attempt to autodetect serial ports attached to
the device, however you many need to manually specify it. COM1, /dev/ttyUSB0, etc
It can either
- wait for a "split" character (default \n). Also accepts hex notation (0x0a).
- wait for a timeout in milliseconds for the first character received
- wait to fill a fixed sized buffer
It then outputs **msg.payload** as either a UTF8 ascii string or a binary Buffer object.
If no split character is specified, or a timeout or buffer size of 0, then a stream
of single characters is sent - again either as ascii chars or size 1 binary buffers.
###Output
Provides a connection to an outbound serial port.
Only the **msg.payload** is sent.
Optionally the new line character used to split the input can be appended to every message sent out to the serial port.

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{
"name" : "node-red-node-serialport",
"version" : "0.0.1",
"description" : "Node-RED nodes to talk to an serial port",
"dependencies" : {
"serialport" : "1.7.*"
},
"repository" : {
"type":"git",
"url":"https://github.com/node-red/node-red-nodes/tree/master/io/serialport"
},
"license": "Apache-2.0",
"keywords": [ "node-red", "serial" ],
"node-red" : {
"nodes" : {
"serialport": "25-serial.js"
}
},
"author": {
"name": "Dave Conway-Jones",
"email": "ceejay@vnet.ibm.com",
"url": "http://nodered.org"
}
}