@iiot2k/node-red-gpio/nodes/iiot2k-gpio-out.html

Node-RED nodes for Raspberry Pi gpio

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<script type="text/javascript">
    RED.nodes.registerType('iiot2k-gpio-out', {
        category: 'iiot2k',
        color: 'Coral',
        paletteLabel: 'gpio-out',
        defaults: {
            gpio:     { value: 20, required: true, validate: function (v) { return (RED.validators.number(v) && (v >= 0) && (v <= 27)); } },
            mode:     { value: "output", required: true },
            activate: { value: false, required: true },
            name:     { value: "" },
        },
        inputs: 1,
        outputs: 0,
        icon:"font-awesome/fa-microchip",
        labelStyle: function() { return this.name ? "node_label_italic" : ""; },
        label: function () {
            return this.name || "gpio" + this.gpio + "-out";
        },
    });
</script>

<script type="text/html" data-template-name="iiot2k-gpio-out">
    <div class="form-row">
        <label style="width:100%; border-bottom: 2px solid rgb(0, 0, 0);"><b>GPIO digital output</b></label>
    </div>
    <div class="form-row">
        <label for="node-input-gpio">GPIO</label>
        <input id="node-input-gpio" input type="number" min="0" max="27" required style="width: auto;">
    </div>
    <div class="form-row">
        <label for="node-input-mode">Mode</label>
        <select type="text" id="node-input-mode" style="width: auto;">
            <option value="output">output</option>
            <option value="sink">output sink</option>
            <option value="source">output source</option>
        </select>
    </div>
    <div class="form-row">
        <label for="node-input-activate">Activate</label>
        <input type="checkbox" id="node-input-activate" style="display: inline-block; width: auto; vertical-align: top;">
    </div>
    <div class="form-row">
        <label for="node-input-name">Name</label>
        <input id="node-input-name" type="text">
    </div>
</script>

<script type="text/markdown" data-help-name="iiot2k-gpio-out">
GPIO digital output

### Input

: *payload* (number/boolean) : sets output state
: *toggle* (any) : toggles GPIO
: *blink* (number) : blink GPIO with period in ms (0..)<br> 0 stops blink 
: *blink_stop* (any) : stops blinking 
: *pulse* (number) : pulse GPIO with period in ms (0..)<br> 0 stops pulse
: *pulse_stop* (any) : stops pulse 
: *pwm.duty* (number) : pwm duty cycle in % (0..100)<br> 0 turns output off<br> 100 turns output on 
: *pwm.freq* (number) : pwm frequency in Hz (0..1000)<br> 0 stops pwm
: *pwm_stop* (any) : stops pwm 

### Details
This node sets, toggles, blinks, pulses or pwm GPIO output.<br>
Only one node per pin is possible.<br>
<br>
```Mode:```<br>
**output:**<br>
0 Connect to ground.<br>
1 Connect to +3.3V.<br>
**output sink:**<br>
0 Set to Hi-Z.<br>
1 Connect to ground.<br>
**output source:**<br>
0 Set to Hi-Z.<br>
1 Connect to +3.3V.<br>
<br>
```Activate:```<br>
**unchecked:**<br>
Set output to 0 on start.<br>
**checked:**<br>
Set output to 1 on start.<br>
<br>
This node works on Raspberry Pi with 64bit OS.<br>
Check with raspi-config for alternate functions on GPIO.<br>
If alternate function on GPIO is overwritten then malfunction is made.<br> 
</script>