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Add Intel Galileo/Edison Gpio nodes

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node-red-node-intel-gpio
========================
A <a href="http://nodered.org" target="_new">Node-RED</a> node to talk to an Intel
Galileo or Edison running mraa.
Install
-------
Run the following command in the root directory of your Node-RED install, usually
this is ~/.node-red .
npm install node-red-node-intel-gpio
Usage
-----
The Galileo or Edison must already be running Linux, and have Node-RED installed.
See the [Intel Downloads](https://software.intel.com/en-us/iot/home) for
hardware / downloads for you particular board.
Ensure the latest version of mraa libraries are installed: (version 1.5 as of Sept 2015)
echo "src mraa-upm http://iotdk.intel.com/repos/1.5/intelgalactic" > /etc/opkg/mraa-upm.conf
okpg update
opkg upgrade
**NOTE** : This node assumes that the mraa npm is already installed globally - as
it is on the Galileo and Edison boards.
If you do need to install Node-RED, you can do this as follows from the home directory of the root user
npm install -g --unsafe-perm node-red
mkdir .node-red
cd .node-red
npm install node-red-node-intel-gpio
###Analogue Input Node
Monitors the selected pin for changes. It outputs on a change of value.
As analogue inputs are continously changing you can set the sample rate in ms from 20 to 65535.
###Digital Input Node
Monitors the selected pin for changes. It only outputs on a change of value.
###Digital Output Node
Sets the selected digital pin output high or low depending on the value of
**msg.payload** - expects a number or string 0 or 1.
###Pulse Width Modulation (PWM) Node
The **msg.payload** should contain a floating point number value
between 0 (off) and 1 (fully on), or a string representation thereof.
You can set the overall period (mS) in the edit dialogue.
For servo control set the period to 20mS and vary the input between 0.05 and 0.10,
0.05 = 5% of 20mS = 1mS
0.75 = 7.5% of 20mS = 1.5mS - typical servo centre point
0.10 = 10% of 20mS = 2mS
###Example
Simple flow to blink Pin 13
...tbd

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<!--
Copyright 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/javascript">
RED.nodes.registerType('mraa-gpio-ain',{
category: 'Intel gpio',
color: '#a6bbcf',
paletteLabel: 'analogue',
defaults: {
name: {value:""},
pin: {value:"", required: true, validate:RED.validators.number()},
interval: {value:"100", required: true, validate:RED.validators.number()}
},
inputs:0,
outputs:1,
icon: "arrow.png",
label: function() {
return this.name||"A"+this.pin;
},
oneditprepare: function() {
var pinnow = this.pin;
$.getJSON('mraa-gpio/'+this.id,function(data) {
var t = "unknown";
if (data === 0) { t = "Galileo v1"; }
if (data === 1) { t = "Galileo v2"; }
if (data === 2) { t = "Edison Fab C"; }
if (data === 3) { t = "DE3813 Baytrail"; }
if (data === 4) { t = "Minnow Max"; }
if (data === 5) { t = "Raspberry Pi"; }
if (data === 6) { t = "Beaglebone"; }
if (data === 7) { t = "Banana"; }
$('#btype').text(t);
$('#node-input-pin').val(pinnow);
});
$.getJSON('mraa-version/'+this.id,function(data) {
$('#ver-tip').text(data);
});
}
});
</script>
<script type="text/x-red" data-template-name="mraa-gpio-ain">
<div class="form-row">
<label for="node-input-pin"><i class="fa fa-circle"></i> Pin</label>
<select type="text" id="node-input-pin" style="width:250px;">
<option value='' disabled selected style='display:none;'><span data-i18n="rpi-gpio.label.selectpin"></span></option>
<option value="0">A0</option>
<option value="1">A1</option>
<option value="2">A2</option>
<option value="3">A3</option>
<option value="4">A4</option>
<option value="5">A5</option>
</select>
</div>
<div class="form-row">
<label for="node-input-name"><i class="fa fa-clock-o"></i> Interval</label>
<input type="text" id="node-input-interval" placeholder="Interval" style="width:250px;"> mS
</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" style="width: 250px;">
</div>
<div class="form-tips">Board : <span id="btype">n/a</span><br/>mraa version : <span id="ver-tip">n/a</span></div>
</script>
<script type="text/x-red" data-help-name="mraa-gpio-ain">
<p>An analogue input pin for an Intel Galileo or Edison board that is read every <i>interval</i> milliseconds.</p>
<p>The <b>msg.payload</b> will contain the value, and <b>msg.topic</b>
contains "{the_board_name}/A{the pin number}".</p>
<p>The value is only sent if it is different from the previously read value.</p>
</script>

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/**
* Copyright 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) {
var m = require('mraa');
function gpioAin(n) {
RED.nodes.createNode(this, n);
this.pin = n.pin;
this.interval = n.interval;
this.x = new m.Aio(parseInt(this.pin));
this.board = m.getPlatformName();
var node = this;
var msg = { topic:node.board+"/A"+node.pin };
var old = -99999;
this.timer = setInterval(function() {
msg.payload = node.x.read();
if (msg.payload !== old) {
node.send(msg);
old = msg.payload;
}
}, node.interval);
this.on('close', function() {
clearInterval(this.timer);
});
}
RED.nodes.registerType("mraa-gpio-ain", gpioAin);
}

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<!--
Copyright 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/javascript">
RED.nodes.registerType('mraa-gpio-din',{
category: 'Intel gpio',
color: '#a6bbcf',
paletteLabel: 'digital',
defaults: {
name: {value:""},
pin: {value:"", required: true},
interrupt: {value:"", required: true}
},
inputs:0,
outputs:1,
icon: "arrow.png",
label: function() {
return this.name||"D"+this.pin;
},
labelStyle: function() {
return this.name?"node_label_italic":"";
},
oneditprepare: function() {
var pinnow = this.pin;
$.getJSON('mraa-gpio/'+this.id,function(data) {
var t = "unknown";
if (data === 0) { t = "Galileo v1"; }
if (data === 1) { t = "Galileo v2"; }
if (data === 2) { t = "Edison Fab C"; }
if (data === 3) { t = "DE3813 Baytrail"; }
if (data === 4) { t = "Minnow Max"; }
if (data === 5) { t = "Raspberry Pi"; }
if (data === 6) { t = "Beaglebone"; }
if (data === 7) { t = "Banana"; }
$('#type-tip').text(t);
$('#node-input-pin').val(pinnow);
});
$.getJSON('mraa-version/'+this.id,function(data) {
$('#ver-tip').text(data);
});
}
});
</script>
<script type="text/x-red" data-template-name="mraa-gpio-din">
<div class="form-row">
<label for="node-input-pin"><i class="fa fa-circle"></i> Pin</label>
<select type="text" id="node-input-pin" style="width: 250px;">
<option value='' disabled selected style='display:none;'><span data-i18n="rpi-gpio.label.selectpin"></span></option>
<option value="0">D0</option>
<option value="1">D1</option>
<option value="2">D2</option>
<option value="3">D3</option>
<option value="4">D4</option>
<option value="5">D5</option>
<option value="6">D6</option>
<option value="7">D7</option>
<option value="8">D8</option>
<option value="9">D9</option>
<option value="10">D10</option>
<option value="11">D11</option>
<option value="12">D12</option>
<option value="13">D13</option>
</select>
</div>
<div class="form-row">
<label for="node-input-name"><i class="fa-level-up"></i> Interrupt</label>
<select type="text" id="node-input-interrupt" style="width: 250px;">
<option value='' disabled selected style='display:none;'>select interrupt</option>
<option value="r">Rising </option>
<option value="f">Falling </option>
<option value="b">Both </option>
</select>
</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" style="width: 250px;">
</div>
<div class="form-tips">Board : <span id="type-tip">n/a</span><br/>mraa version : <span id="ver-tip">n/a</span></div>
</script>
<script type="text/x-red" data-help-name="mraa-gpio-din">
<p>A digital input pin for an Intel Galileo or Edison board.</p>
<p>The <b>msg.payload</b> contains the value (0 or 1), and <b>msg.topic</b>
contains "{the_board_name}/D{the pin number}".</p>
</script>

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/**
* Copyright 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) {
var m = require('mraa');
//console.log("BOARD :",m.getPlatformName());
function gpioDin(n) {
RED.nodes.createNode(this,n);
this.pin = n.pin;
this.interrupt = n.interrupt;
this.x = new m.Gpio(parseInt(this.pin));
this.board = m.getPlatformName();
var node = this;
node.x.mode(m.PIN_GPIO);
node.x.dir(m.DIR_IN);
node.x.isr(m.EDGE_BOTH, function() {
var g = node.x.read();
var msg = { payload:g, topic:node.board+"/D"+node.pin };
switch (g) {
case 0:
node.status({fill:"green",shape:"ring",text:"low"});
if (node.interrupt=== "f" || node.interrupt === "b") {
node.send(msg);
}
break;
case 1:
node.status({fill:"green",shape:"dot",text:"high"});
if (node.interrupt=== "r" || node.interrupt === "b") {
node.send(msg);
}
break;
default:
node.status({fill:"grey",shape:"ring",text:"unknown"});
}
});
switch (node.x.read()) {
case 0:
node.status({fill:"green",shape:"ring",text:"low"});
break;
case 1:
node.status({fill:"green",shape:"dot",text:"high"});
break;
default:
node.status({});
}
this.on('close', function() {
node.x.isr(m.EDGE_BOTH, null);
});
}
RED.nodes.registerType("mraa-gpio-din", gpioDin);
}

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<!--
Copyright 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/javascript">
RED.nodes.registerType('mraa-gpio-dout',{
category: 'Intel gpio',
color: '#a6bbcf',
paletteLabel: 'digital',
defaults: {
name: {value:""},
pin: {value:"", required: true},
set: { value:"" },
level: { value:"0" }
},
inputs:1,
outputs:0,
icon: "arrow.png",
align: "right",
label: function() {
if (this.pin === "14") {
return "LED";
} else {
return this.name||"D"+this.pin;
}
},
labelStyle: function() {
return this.name?"node_label_italic":"";
},
oneditprepare: function() {
var pinnow = this.pin;
$.getJSON('mraa-gpio/'+this.id,function(data) {
var t = "unknown";
if (data === 0) { t = "Galileo v1"; }
if (data === 1) { t = "Galileo v2"; }
if (data === 2) { t = "Edison Fab C"; }
if (data === 3) { t = "DE3813 Baytrail"; }
if (data === 4) { t = "Minnow Max"; }
if (data === 5) { t = "Raspberry Pi"; }
if (data === 6) { t = "Beaglebone"; }
if (data === 7) { t = "Banana"; }
$('#btype').text(t);
if (data === 0) {
$('#node-input-pin').append($("<option></option>").attr("value",14).text("LED - Galileo v1"));
}
$('#node-input-pin').val(pinnow);
});
$.getJSON('mraa-version/'+this.id,function(data) {
$('#ver-tip').text(data);
});
var setstate = function () {
if ($('#node-input-set').is(":checked")) {
$("#node-set-state").show();
} else {
$("#node-set-state").hide();
}
};
$("#node-input-set").change(function () { setstate(); });
setstate();
}
});
</script>
<script type="text/x-red" data-template-name="mraa-gpio-dout">
<div class="form-row">
<label for="node-input-pin"><i class="fa fa-circle"></i> Pin</label>
<select type="text" id="node-input-pin" style="width: 250px;">
<option value='' disabled selected style='display:none;'><span data-i18n="rpi-gpio.label.selectpin"></span></option>
<option value="0">D0</option>
<option value="1">D1</option>
<option value="2">D2</option>
<option value="3">D3</option>
<option value="4">D4</option>
<option value="5">D5</option>
<option value="6">D6</option>
<option value="7">D7</option>
<option value="8">D8</option>
<option value="9">D9</option>
<option value="10">D10</option>
<option value="11">D11</option>
<option value="12">D12</option>
<option value="13">D13</option>
</select>
</div>
<div class="form-row" id="node-set-tick">
<label>&nbsp;</label>
<input type="checkbox" id="node-input-set" style="display: inline-block; width: auto; vertical-align: top;">
<label for="node-input-set" style="width: 70%;">Set initial level of pin.</label>
</div>
<div class="form-row" id="node-set-state">
<label for="node-input-level">&nbsp;</label>
<select id="node-input-level" style="width: 250px;">
<option value="0">0 - low</option>
<option value="1">1 - high</option>
</select>
</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" style="width: 250px;">
</div>
<div class="form-tips">Board : <span id="btype">n/a</span><br/>mraa version : <span id="ver-tip">n/a</span></div>
</script>
<script type="text/x-red" data-help-name="mraa-gpio-dout">
<p>A digital output pin for an Intel Galileo or Edison board.</p>
<p>The <b>msg.payload</b> should contain the value 0 or 1.</p>
</script>

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/**
* Copyright 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) {
var m = require('mraa');
function gpioDout(n) {
RED.nodes.createNode(this, n);
this.pin = Number(n.pin);
this.set = n.set;
this.level = Number(n.level);
var node = this;
if (node.pin === 14) {
node.p = new m.Gpio(3,false,true); // special for onboard LED v1
} else {
node.p = new m.Gpio(node.pin);
}
node.p.mode(m.PIN_GPIO);
node.p.dir(m.DIR_OUT);
if (node.set) {
node.p.write(node.level);
}
node.on("input", function(msg) {
if (msg.payload == "1") {
node.p.write(1);
} else {
node.p.write(0);
}
});
this.on('close', function() {
});
}
RED.nodes.registerType("mraa-gpio-dout", gpioDout);
RED.httpAdmin.get('/mraa-gpio/:id', RED.auth.needsPermission('mraa-gpio.read'), function(req,res) {
res.json(m.getPlatformType());
});
RED.httpAdmin.get('/mraa-version/:id', RED.auth.needsPermission('mraa-version.read'), function(req,res) {
res.json(m.getVersion());
});
}

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<!--
Copyright 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/javascript">
RED.nodes.registerType('mraa-gpio-pwm',{
category: 'Intel gpio',
color: '#a6bbcf',
paletteLabel: 'pwm',
defaults: {
name: {value:""},
pin: {value:"", required: true},
period: { value:"100", required: true }
},
inputs:1,
outputs:0,
icon: "arrow.png",
align: "right",
label: function() {
if (this.pin === "14") {
return "LED";
} else {
return this.name||"PWM D"+this.pin;
}
},
labelStyle: function() {
return this.name?"node_label_italic":"";
},
oneditprepare: function() {
var pinnow = this.pin;
$.getJSON('mraa-gpio/'+this.id,function(data) {
var t = "unknown";
if (data === 0) { t = "Galileo v1"; }
if (data === 1) { t = "Galileo v2"; }
if (data === 2) { t = "Edison Fab C"; }
if (data === 3) { t = "DE3813 Baytrail"; }
if (data === 4) { t = "Minnow Max"; }
if (data === 5) { t = "Raspberry Pi"; }
if (data === 6) { t = "Beaglebone"; }
if (data === 7) { t = "Banana"; }
$('#type-tip').text(t);
$('#node-input-pin').val(pinnow);
});
$.getJSON('mraa-version/'+this.id,function(data) {
$('#ver-tip').text(data);
});
var setstate = function () {
if ($('#node-input-set').is(":checked")) {
$("#node-set-state").show();
} else {
$("#node-set-state").hide();
}
};
$("#node-input-set").change(function () { setstate(); });
setstate();
}
});
</script>
<script type="text/x-red" data-template-name="mraa-gpio-pwm">
<div class="form-row">
<label for="node-input-pin"><i class="fa fa-circle"></i> Pin</label>
<select type="text" id="node-input-pin" style="width: 250px;">
<option value='' disabled selected style='display:none;'><span data-i18n="rpi-gpio.label.selectpin"></span></option>
<option value="3">D3</option>
<option value="5">D5</option>
<option value="6">D6</option>
<option value="9">D9</option>
<option value="10">D10</option>
<option value="11">D11</option>
</select>
</div>
<div class="form-row">
<label for="node-input-period"><i class="fa fa-clock-o"></i> Period</label>
<input type="text" id="node-input-period" placeholder="number" style="width: 250px;"> mS
</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" style="width: 250px;">
</div>
<div class="form-tips">Board : <span id="type-tip">n/a</span><br/>mraa version : <span id="ver-tip">n/a</span></div>
</script>
<script type="text/x-red" data-help-name="mraa-gpio-pwm">
<p>A pulse width modulation (PWM) output pin for an Intel Galileo or Edison board.</p>
<p>The <b>msg.payload</b> should contain a floating point number value
between 0 and 1, (or a string representation thereof.)</p>
<p>For servo control set the period to 20mS and vary the input between 0.05 and 0.10</p>
<p><b>Note</b> : Only pins 3, 5, 6, 9, 10 & 11 support PWM output.</p>
</script>

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/**
* Copyright 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) {
var m = require('mraa');
function gpioPWM(n) {
RED.nodes.createNode(this, n);
this.pin = Number(n.pin);
this.period = Number(n.period) || 100;
var node = this;
node.p = new m.Pwm(node.pin);
//node.p.dir(m.DIR_OUT);
//node.p.mode(m.PIN_PWM);
node.p.enable(true);
node.p.period_ms(node.period);
node.on("input", function(msg) {
if (msg.payload) {
node.p.write(Number(msg.payload));
}
});
this.on('close', function() {
node.p.enable(false);
});
}
RED.nodes.registerType("mraa-gpio-pwm", gpioPWM);
RED.httpAdmin.get('/mraa-gpio/:id', RED.auth.needsPermission('mraa-gpio.read'), function(req,res) {
res.json(m.getPlatformType());
});
RED.httpAdmin.get('/mraa-version/:id', RED.auth.needsPermission('mraa-version.read'), function(req,res) {
res.json(m.getVersion());
});
}

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hardware/intel/package.json Normal file
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{
"name" : "node-red-node-intel-gpio",
"version" : "0.0.3",
"description" : "A Node-RED node to talk to an Intel Galileo or Edison using mraa",
"dependencies" : {
},
"repository" : {
"type":"git",
"url":"https://github.com/node-red/node-red-nodes/tree/master/hardware/intel"
},
"license": "Apache-2.0",
"keywords": [ "node-red", "intel", "galileo", "edison" ],
"node-red" : {
"nodes" : {
"mraa-gpio-ain": "mraa-gpio-ain.js",
"mraa-gpio-din": "mraa-gpio-din.js",
"mraa-gpio-dout": "mraa-gpio-dout.js",
"mraa-gpio-pwm": "mraa-gpio-pwm.js"
}
},
"author": {
"name": "Dave Conway-Jones",
"email": "ceejay@vnet.ibm.com",
"url": "http://nodered.org"
}
}