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Digispark RGB Node-RED node Use git clone to check this out into the node-red/nodes/hardware directory After you will need to run npm install node-hid in the node-red directory to add the required dependencies
<!--
Copyright 2013 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.
-->
<!-- First, the content of the edit dialog is defined. -->
<script type="text/x-red" data-template-name="digiRGB">
<!-- data-template-name identifies the node type this is for -->
<!-- Each of the following divs creates a field in the edit dialog. -->
<!-- Generally, there should be an input for each property of the node. -->
<!-- The for and id attributes identify the corresponding property -->
<!-- (with the 'node-input-' prefix). -->
<!-- The available icon classes are defined in Twitter Bootstrap -->
<!-- By convention, most nodes have a 'name' property. The following div -->
<!-- provides the necessary field. -->
<div class="form-row">
<label for="node-input-name"><i class="icon-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
<div class="form-tips">Expects a msg.payload with three part csv string of r,g,b.</div>
</script>
<!-- Next, some simple help text is provided for the node. -->
<script type="text/x-red" data-help-name="digiRGB">
<!-- data-help-name identifies the node type this help is for -->
<!-- This content appears in the Info sidebar when a node is selected -->
<!-- The first <p> is used as the pop-up tool tip when hovering over a -->
<!-- node in the palette. -->
<p>Simple outputput node to drive digispark RGB</p>
<p>Requires msg.payload to be of the form 'r,g,b'</p>
</script>
<!-- Finally, the node type is registered along with all of its properties -->
<!-- The example below shows a small subset of the properties that can be set-->
<script type="text/javascript">
RED.nodes.registerType('digiRGB',{
category: 'output', // the palette category
color:"GoldenRod",
defaults: { // defines the editable properties of the node
name: {value:"digiSparkRGB"} // along with default values.
},
inputs:1, // set the number of inputs - only 0 or 1
outputs:0, // set the number of outputs - 0 to n
icon: "light.png", // set the icon (held in public/icons)
align: "right",
label: function() { // sets the default label contents
return this.name||this.topic||"sample";
},
labelStyle: function() { // sets the class to apply to the label
return this.name?"node_label_italic":"";
}
});
</script>
/**
* Copyright 2013 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.
**/
// Sample Node-RED node file
// Require main module
var RED = require("../../red/red");
var HID = require('node-hid');
var device;
var node;
// The main node definition - most things happen in here
function DigiRGBNode(n) {
// Create a RED node
RED.nodes.createNode(this,n);
node=this;
var devices = HID.devices(0x16c0,0x05df);
for (var i=0; i< devices.length; i++) {
if (devices[i].product == 'DigiUSB') {
path = devices[i].path;
node.log("found: " + path);
try {
device = new HID.HID(devices[i].path);
break;
} catch (e) {
node.log(e)
}
}
}
var p1 = /^\#[A-Fa-f0-9]{6}$/
var p2 = /[0-9]+,[0-9]+,[0-9]+/
if (device) {
this.on("input", function(msg) {
if (msg != null) {
if (p1.test(msg.payload)) {
var r = parseInt(msg.payload.slice(1,3),16);
var g = parseInt(msg.payload.slice(3,5),16);
var b = parseInt(msg.payload.slice(5),16);
device.sendFeatureReport([115,r,g,b]);
} else if (p2.test(msg.payload)) {
var args = msg.payload.split(',');
if (args.length == 3) {
device.sendFeatureReport([115,parseInt(args[0]),parseInt(args[1]),parseInt(args[2])]);
}
} else {
node.warn("incompatable input - " + msg.payload);
}
}
});
} else {
node.warn("no digispark RGB found");
}
}
// Register the node by name. This must be called before overriding any of the
// Node functions.
RED.nodes.registerType("digiRGB",DigiRGBNode);
DigiRGBNode.prototype.close = function() {
// Called when the node is shutdown - eg on redeploy.
// Allows ports to be closed, connections dropped etc.
// eg: this.client.disconnect();
if (device) {
device.close();
}
}
{
"name": "digiRGB",
"version": "0.0.1",
"description": "digispark RGB Shield output node for node",
"author", "Benjamin Hardill",
"license", "Apache",
"dependencies": {
"node-hid": "*"
},
"engine": { "node": ">=0.8"}
}
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