node-red-nodes/hardware/neopixel/neopixel.html

<!--
  Copyright 2016 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="rpi-neopixels">
<div class="form-row">
    <label for="node-input-pixels"><i class="fa fa-sun-o"></i> LEDs</label>
    <input type="text" id="node-input-pixels" placeholder="number" style="width:60px;"> in the string
</div>
<div class="form-row">
    <label for="node-input-mode"><i class="fa fa-cogs"></i> Mode</label>
    <select id="node-input-mode" style="width:73%">
        <option value="pcent">Bar - Percent of length</option>
        <option value="pixels">Bar - Number of pixels</option>
        <option value="pcentneedle">Needle - Percent of length</option>
        <option value="pixelsneedle">Needle - Number of pixels</option>
        <option value="shiftu">Add pixel to start</option>
        <option value="shiftd">Add pixel to end</option>
    </select>
</div>
<div class="form-row" id="bgcol">
    <label for="node-input-bgnd"><i class="fa fa-picture-o"></i> Background</label>
    <input type="text" id="node-input-bgnd" placeholder="HTML colour name or rrr,ggg,bbb">
</div>
<div class="form-row"  id="fgcol">
    <label for="node-input-fgnd"><i class="fa fa-picture-o"></i> Foreground</label>
    <input type="text" id="node-input-fgnd" placeholder="HTML colour name or rrr,ggg,bbb">
</div>
<div class="form-row">
    <label for="node-input-wipe"><i class="fa fa-clock-o"></i> Wipe time</label>
    <input type="text" id="node-input-wipe" placeholder="number" style="width:60px;"> mS &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Pixel order
    <select id="node-input-rgb" style="width:80px">
        <option value="rgb">RGB</option>
        <option value="grb">GRB</option>
    </select>
</div>
<br/>
<div class="form-row">
    <label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
    <input type="text" id="node-input-name">
</div>
</script>

<script type="text/x-red" data-help-name="rpi-neopixels">
    <p>Raspberry Pi node to drive a string of neopixel or ws2812 LEDs.</p>
    <p>Defaults to a bar chart style mode using configured foreground and background colours.
    It can also display a needle (single pixel) type gauge.</p>
    <p>It can accept a number in <code>msg.payload</code> that can be either the
    number of pixels, or a percentage of the total length.</p>
    <p>If you want to change the foregound colour, you can send a CSV of <i>html colour,length</i>.</p>
    <p>To set the background just send an <i>html colour</i> name.
    <a href="http://html-color-codes.info/color-names/" target="_top">Here
    is a list</a> of html colour names.<p>
    <p>You can also select shift modes where a single colour pixel is added to either the start or the end of the strip.</p>
    <p>The <i>nth</i> pixel is set by <code>msg.payload</code> with a CSV string <i>n,r,g,b</i>
    <!-- <p>The whole strip is set by <code>msg.payload</code> with a CSV string <i>r,g,b</i> -->
    <p>A range of pixels from <i>x</i> to <i>y</i> can be set by <code>msg.payload</code>
    with a CSV string <i>x,y,r,g,b</i>
    <p>The pixels data line should be connected to Pi physical pin 12 - GPIO 18. <i>Note:</i>
    this may conflict with audio playback.</p>
    <p align="right"><a href="http://flows.nodered.org/node/node-red-node-pi-neopixel#usage">More info&nbsp;&nbsp;</a></p>
</script>

<script type="text/javascript">
    RED.nodes.registerType('rpi-neopixels',{
        category: 'Raspberry Pi',
        label: 'Raspberry Pi',
        color:"#c6dbef",
        defaults: {
            name: { value:"" },
            pixels: { value:"", required:true, validate:RED.validators.number() },
            bgnd: { value:"" },
            fgnd: { value:"" },
            wipe: { value:"40", required:true, validate:RED.validators.number() },
            mode: { value:"pcent" },
            rgb: { value:"rgb" }
        },
        inputs:1,
        outputs:0,
        icon: "rpi.png",
        align: "right",
        label: function() {
            return this.name||this.pixels+" neopixels";
        },
        labelStyle: function() {
            return this.name?"node_label_italic":"";
        },
        oneditprepare: function() {
            var setstate = function () {
                if ($('#node-input-mode').val().indexOf("shift") !== -1) {
                    $("#bgcol").hide();
                    $("#fgcol").hide();
                } else {
                    $("#bgcol").show();
                    $("#fgcol").show();
                }
            };
            $("#node-input-mode").change(function () { setstate(); });
            setstate();
        }
    });
</script>