node-red-contrib-roadrunner-adc/roadrunner-adc.html

Node-RED nodes to read Acmesystem's Roadrunner ADC lines via IIO.

<style>
.rr-adc-select select {
    width: 4em;
}
</style>
<script type="text/x-red" data-template-name="rr-adc in">
    <div class="form-row rr-adc-select" id="adcform">
        <label for="node-input-adc"><i class="fa fa-circle"></i> ADC Line</label>
        <select id="node-input-adc">
            <option value="0" >00</option>
            <option value="1" >01</option>
            <option value="2" >02</option>
            <option value="3" >03</option>
            <option value="4" >04</option>
            <option value="5" >05</option>
            <option value="6" >06</option>
            <option value="7" >07</option>
            <option value="8" >08</option>
            <option value="9" >09</option>
            <option value="10">10</option>
            <option value="11">11</option>
            <option value="M">set by msg.payload</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">
    </div>
</script>

<script type="text/x-red" data-help-name="rr-gpio in">
    <p>RoadRunner input node. Generates a <code>msg.payload</code> with the value of the corresponding ADC line.</p>
    <p>You can either set a channel in the edit dialogue, or you can set the <code>msg.payload</code>
    to select the channel dynamically. If so then the expected payload must be a value from 0 to 11.</p>
    <p>Also sets <code>msg.topic</code> to <i>rr-adc/{the adc line number}</i></p>
    <h3>Outputs</h3>
    <dl class="message-properties">
        <dt>payload <span class="property-type">number</span></dt>
        <dd>the payload will be the value read from the ADC line.</dd>
    </dl>
    <h3>Details</h3>
    <p>Requires <i>/sys/bus/iio/devices/iio\:device0/</i> to be user readable in order to work if you are not running node-red as root.</p>
</script>

<script type="text/javascript">
    RED.nodes.registerType('rr-adc in',{
        category: 'RoadRunner',
        color: '#a6bbcf',
        defaults: {
            name: {value:""},
            adc: { value:0, required:true }
        },
        inputs:1,
        outputs:1,
        icon: "roadrunner.png",
        label: function() {
            return this.name||"rr-adc "+(this.adc==="M"?"":this.adc);
        },
        labelStyle: function() {
            return this.name?"node_label_italic":"";
        }
    });
</script>