Added PiFace Node and PiBorg LED Nodes for Raspberry Pi people
This commit is contained in:
Dave C-J
parent
790e9f6014
commit
bf178b81ee
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<!--
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Copyright 2013 IBM Corp.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<script type="text/x-red" data-template-name="rpi-piface in">
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<div class="form-row">
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<label for="node-input-pin"><i class="icon-asterisk"></i> GPIO Pin</label>
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<select type="text" id="node-input-pin" style="width: 150px;">
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<option value="-">select pin</option>
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<option value="Button S1">Button S1</option>
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<option value="Button S2">Button S2</option>
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<option value="Button S3">Button S3</option>
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<option value="Button S4">Button S4</option>
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<option value="Input 5">Input 5</option>
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<option value="Input 6">Input 6</option>
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<option value="Input 7">Input 7</option>
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<option value="Input 8">Input 8</option>
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<option value="Output0">Output 0</option>
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<option value="Output1">Output 1</option>
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<option value="Output2">Output 2</option>
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<option value="Output3">Output 3</option>
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<option value="Output4">Output 4</option>
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<option value="Output5">Output 5</option>
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<option value="Output6">Output 6</option>
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<option value="Output7">Output 7</option>
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</select>
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</div>
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<div class="form-row">
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<label for="node-input-intype"><i class=" icon-resize-full"></i> Resistor?</label>
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<select type="text" id="node-input-intype" style="width: 150px;">
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<option value="up">pullup</option>
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<option value="tri">none</option>
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</select>
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</div>
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<div class="form-row">
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<label for="node-input-name"><i class="icon-tag"></i> Name</label>
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<input type="text" id="node-input-name" placeholder="Name">
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</div>
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<div class="form-tips">Tip: Only Digital I/O is supported - input must be 0 or 1.</div>
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</script>
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<script type="text/x-red" data-help-name="rpi-piface in">
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<p>Raspberry Pi PiFace input node. Generates a <b>msg.payload</b> with either a 0 or 1 depending on the state of the input pin. Requires the gpio command to work.</p>
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<p>You may also enable the input pullup resitor if required.</p>
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<p>The <b>msg.topic</b> is set to <i>pi/{the pin number}</i></p>
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<p><b>Note:</b> This node currently polls the pin every 250mS. This is not ideal as it loads the cpu, and will be rewritten shortly to try to use interrupts.</p>
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</script>
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<script type="text/javascript">
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RED.nodes.registerType('rpi-piface in',{
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category: 'advanced-input',
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color:"#c6dbef",
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defaults: {
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name: { value:"" },
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intype: { value: "up" },
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pin: { value:"",required:true},
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},
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inputs:0,
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outputs:1,
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icon: "rpi.png",
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label: function() {
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return this.name||"PiFace: "+this.pin;
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},
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labelStyle: function() {
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return this.name?"node_label_italic":"";
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}
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});
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</script>
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<script type="text/x-red" data-template-name="rpi-piface out">
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<div class="form-row">
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<label for="node-input-pin"><i class="icon-asterisk"></i> GPIO Pin</label>
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<select type="text" id="node-input-pin" style="width: 150px;">
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<option value="-">select pin</option>
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<option value="LED 0 / Relay 0">LED 0 / Relay 0</option>
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<option value="LED 1 / Relay 1">LED 1 / Relay 1</option>
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<option value="LED 2">LED 2</option>
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<option value="LED 3">LED 3</option>
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<option value="LED 4">LED 4</option>
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<option value="LED 5">LED 5</option>
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<option value="LED 6">LED 6</option>
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<option value="LED 7">LED 7</option>
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</select>
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</div>
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<div class="form-row">
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<label for="node-input-name"><i class="icon-tag"></i> Name</label>
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<input type="text" id="node-input-name" placeholder="Name">
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</div>
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<div class="form-tips">Tip: Only Digital I/O is supported - input must be 0 or 1.</div>
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</script>
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<script type="text/x-red" data-help-name="rpi-piface out">
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<p>Raspberry Pi PiFace output node. The PiFace board must be fitted. Requires the gpio command to work.</p>
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<p>Expects a <b>msg.payload</b> with either a 0 or 1 (or true or false).</p>
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<p>Will set the selected relay, LED, or pin on or off depending on the value passed in.</p>
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</script>
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<script type="text/javascript">
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RED.nodes.registerType('rpi-piface out',{
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category: 'advanced-output',
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color:"#c6dbef",
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defaults: {
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name: { value:"" },
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pin: { value:"",required:true},
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},
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inputs:1,
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outputs:0,
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icon: "rpi.png",
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align: "right",
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label: function() {
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return this.name||"PiFace: "+this.pin;
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},
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labelStyle: function() {
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return this.name?"node_label_italic":"";
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}
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});
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</script>
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@ -0,0 +1,134 @@
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/**
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* Copyright 2013 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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var RED = require("../../red/red");
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var util = require("util");
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var exec = require('child_process').exec;
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var fs = require('fs');
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if (!fs.existsSync("/usr/local/bin/gpio")) {
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exec("cat /proc/cpuinfo | grep BCM27",function(err,stdout,stderr) {
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if (stdout.indexOf('BCM27') > -1) {
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util.log('[37-rpi-piface.js] Error: Cannot find Wiring-Pi "gpio" command');
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}
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// else not on a Pi so don't worry anyone with needless messages.
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});
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return;
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}
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// Map names of pins to Gordon's gpio PiFace pin numbers
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var pintable = {
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// Physical : WiringPi
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"Button S1":"200",
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"Button S2":"201",
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"Button S3":"202",
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"Button S4":"203",
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"Input 5":"204",
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"Input 6":"205",
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"Input 7":"206",
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"Input 8":"207",
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"Output0":"208",
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"Output1":"209",
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"Output2":"210",
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"Output3":"211",
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"Output4":"212",
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"Output5":"213",
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"Output6":"214",
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"Output7":"215",
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"LED 0 / Relay 0":"200",
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"LED 1 / Relay 1":"201",
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"LED 2":"202",
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"LED 3":"203",
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"LED 4":"204",
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"LED 5":"205",
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"LED 6":"206",
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"LED 7":"207"
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}
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function PiFACEInNode(n) {
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RED.nodes.createNode(this,n);
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this.buttonState = -1;
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this.pin = pintable[n.pin];
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this.intype = n.intype;
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var node = this;
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if (node.pin) {
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exec("gpio -p mode "+node.pin+" "+node.intype, function(err,stdout,stderr) {
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if (err) node.error(err);
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else {
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node._interval = setInterval( function() {
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exec("gpio -p read "+node.pin, function(err,stdout,stderr) {
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if (err) node.error(err);
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else {
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if (node.buttonState !== Number(stdout)) {
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var previousState = node.buttonState;
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node.buttonState = Number(stdout);
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if (previousState !== -1) {
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var msg = {topic:"pi/"+node.pin, payload:node.buttonState};
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node.send(msg);
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}
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}
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}
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});
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}, 250);
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}
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});
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}
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else {
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node.error("Invalid PiFACE pin: "+node.pin);
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}
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}
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function PiFACEOutNode(n) {
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RED.nodes.createNode(this,n);
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this.pin = pintable[n.pin];
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var node = this;
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if (node.pin) {
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node.on("input", function(msg) {
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if (msg.payload === "true") msg.payload = true;
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if (msg.payload === "false") msg.payload = false;
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var out = Number(msg.payload);
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if ((out == 0)|(out == 1)) {
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exec("gpio -p write "+node.pin+" "+out, function(err,stdout,stderr) {
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if (err) node.error(err);
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});
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}
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else node.warn("Invalid input - not 0 or 1");
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});
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}
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else {
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node.error("Invalid PiFACE pin: "+node.pin);
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}
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}
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exec("gpio load spi",function(err,stdout,stderr) {
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if (err) {
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util.log('[37-rpi-piface.js] Error: "gpio load spi" command failed for some reason.');
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}
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exec("gpio -p reset",function(err,stdout,stderr) {
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if (err) {
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util.log('[37-rpi-piface.js] Error: "gpio -p reset" command failed for some reason.');
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}
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RED.nodes.registerType("rpi-piface in",PiFACEInNode);
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RED.nodes.registerType("rpi-piface out",PiFACEOutNode);
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PiFACEInNode.prototype.close = function() {
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clearInterval(this._interval);
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}
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PiFACEOutNode.prototype.close = function() {
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}
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});
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});
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<!--
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Copyright 2013 IBM Corp.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<script type="text/x-red" data-template-name="ledborg">
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<div class="form-row">
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<label for="node-input-name"><i class="icon-tag"></i> Name</label>
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<input type="text" id="node-input-name" placeholder="Name">
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</div>
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<div class="form-tips">Expects a msg.payload with PiBorg three digit rgb colour string. 000 -> 222</div>
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</script>
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<script type="text/x-red" data-help-name="ledborg">
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<p>PiBorg LedBorg LED output node. Expects a <b>msg.payload</b> with a three digit rgb triple, from <b>000</b> to <b>222</b>.</p>
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<p>See <i><a href="http://www.piborg.com/ledborg/install" target="_new">the PiBorg site</a></i> for more information.</p>
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<p>You can also now use a <b>msg.payload</b> in the standard hex format "#rrggbb". The clip levels are :</p>
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<p><pre>0x00 - 0x57 = off<br/>0x58 - 0xA7 = 50%<br/>0xA8 - 0xFF = fully on</pre></p>
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</script>
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<script type="text/javascript">
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RED.nodes.registerType('ledborg',{
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category: 'output',
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color:"GoldenRod",
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defaults: {
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name: {value:""}
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},
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inputs:1,
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outputs:0,
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icon: "light.png",
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align: "right",
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label: function() {
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return this.name||"ledborg";
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},
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labelStyle: function() {
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return this.name?"node_label_italic":"";
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}
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});
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</script>
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@ -0,0 +1,53 @@
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/**
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* Copyright 2013 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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var RED = require("../../red/red");
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var util = require('util');
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var fs = require('fs');
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// check if /dev/ledborg exists - if not then don't even show the node.
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if (!fs.existsSync("/dev/ledborg")) {
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util.log("[78-ledborg.js] Error: PiBorg hardware : LedBorg not found");
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return;
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}
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function LedBorgNode(n) {
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RED.nodes.createNode(this,n);
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var p1 = /[0-2][0-2][0-2]/
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var p2 = /^\#[A-Fa-f0-9]{6}$/
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var node = this;
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this.on("input", function(msg) {
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if (p1.test(msg.payload)) {
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fs.writeFile('/dev/ledborg', msg.payload, function (err) {
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if (err) node.warn(msg.payload+" : No LedBorg found");
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});
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}
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if (p2.test(msg.payload)) {
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var r = Math.floor(parseInt(msg.payload.slice(1,3),16)/88).toString();
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var g = Math.floor(parseInt(msg.payload.slice(3,5),16)/88).toString();
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var b = Math.floor(parseInt(msg.payload.slice(5),16)/88).toString();
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fs.writeFile('/dev/ledborg', r+g+b, function (err) {
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if (err) node.warn(r+g+b+" : No LedBorg found");
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});
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}
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else {
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node.warn("Invalid LedBorg colour code");
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}
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});
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}
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RED.nodes.registerType("ledborg",LedBorgNode);
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