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https://github.com/node-red/node-red-nodes.git
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Add new Pibrella dedicated node for Raspberry Pi.
This commit is contained in:
Dave C-J
112
hardware/Pi/38-rpi-pibrella.html
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112
hardware/Pi/38-rpi-pibrella.html
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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-pibrella in">
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<div class="form-row">
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<label for="node-input-pin"><i class="icon-asterisk"></i> Input</label>
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<select type="text" id="node-input-pin" style="width: 150px;">
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<option value="-">select input </option>
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<option value="Red Button">Red Button</option>
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<option value="In A">In A</option>
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<option value="In B">In B</option>
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<option value="In C">In C</option>
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<option value="In D">In D</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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</script>
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<script type="text/x-red" data-help-name="rpi-pibrella in">
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<p>Raspberry Pi Pibrella input node. Generates a <b>msg.payload</b> with either a 0 or 1 depending on the state of the input pin.</p>
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<p>The <b>msg.topic</b> is set to <i>pibrella/{the pin id}</i>, A, B, C, D or R</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.</p>
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<p>Requires the WiringPi gpio command in order to work.</p>
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</script>
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<script type="text/javascript">
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RED.nodes.registerType('rpi-pibrella 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: "in" },
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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||this.pin||"Pibrella";
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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-pibrella out">
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<div class="form-row">
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<label for="node-input-pin"><i class="icon-asterisk"></i> Output</label>
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<select type="text" id="node-input-pin" style="width: 150px;">
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<option value="-">select output </option>
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<option value="Red LED">Red LED</option>
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<option value="Amber LED">Amber LED</option>
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<option value="Green LED">Green LED</option>
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<option value="Out E">Out E</option>
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<option value="Out F">Out F</option>
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<option value="Out G">Out G</option>
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<option value="Out H">Out H</option>
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<option value="Buzzer">Buzzer</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">Buzzer takes <b>msg.payload</b> between 2 (high) and 512 (low), or 0 for off.</div>
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</script>
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<script type="text/x-red" data-help-name="rpi-pibrella out">
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<p>Raspberry Pi Pibrella output node. The Pibrella board must be fitted.</p>
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<p>Will set the selected output high (on) or low (off) depending on the value passed in. Expects a <b>msg.payload</b> with either a 0 or 1 (or true or false).</p>
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<p>The Buzzer is a divider so low numbers are high notes. 0 is off, and the sensible lowest note is around 250-300.</p>
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<p>Requires the WiringPi gpio command in order to work.</p>
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</script>
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<script type="text/javascript">
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RED.nodes.registerType('rpi-pibrella 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||this.pin||"Pibrella";
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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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173
hardware/Pi/38-rpi-pibrella.js
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173
hardware/Pi/38-rpi-pibrella.js
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@@ -0,0 +1,173 @@
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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(process.env.NODE_RED_HOME+"/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('[36-rpi-gpio.js] Error: Cannot find Wiring-Pi "gpio" command. http://wiringpi.com/download-and-install/');
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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 physical P1 pins to Gordon's Wiring-Pi Pins (as they should be V1/V2 tolerant)
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var pintable = {
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// Physical : WiringPi
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"Amber LED":"0",
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"Buzzer":"1",
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"Red LED":"2",
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"Out E":"3",
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"Out F":"4",
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"Out G":"5",
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"Out H":"6",
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"Green LED":"7",
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"In C":"10",
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"In B":"11",
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"In D":"12",
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"In A":"13",
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"Red Button":"14",
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}
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var tablepin = {
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// WiringPi : Physical
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"0":"Amber",
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"Buzzer":"1",
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"2":"Red",
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"3":"E",
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"4":"F",
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"5":"G",
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"6":"H",
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"7":"Green",
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"10":"C",
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"11":"B",
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"12":"D",
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"13":"A",
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"14":"R",
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}
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function PibrellaIn(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 (this.pin) {
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exec("gpio 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 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:"pibrella/"+tablepin[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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this.error("Invalid GPIO pin: "+this.pin);
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}
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}
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function PibrellaOut(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 (this.pin == "1") {
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exec("gpio mode 1 pwm");
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process.nextTick(function() {
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exec("gpio pwm-ms");
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node.on("input", function(msg) {
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var out = Number(msg.payload);
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if (out == 1) { out = 2; } // doesn't work with 1...
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if (out == 0) { exec("gpio pwm 1 0"); }
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else {
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exec("gpio pwm 1 511");
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exec("gpio pwmc "+out);
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}
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});
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});
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}
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else if (this.pin) {
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process.nextTick(function() {
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exec("gpio mode "+node.pin+" out", function(err,stdout,stderr) {
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if (err) node.error(err);
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else {
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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 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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});
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});
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}
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else {
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this.error("Invalid GPIO pin: "+this.pin);
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}
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}
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exec("gpio mode 0 out",function(err,stdout,stderr) {
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if (err) {
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util.log('[36-rpi-gpio.js] Error: "gpio" command failed for some reason.');
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}
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exec("gpio mode 1 out");
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exec("gpio mode 2 out");
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exec("gpio mode 3 out");
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exec("gpio mode 4 out");
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exec("gpio mode 5 out");
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exec("gpio mode 6 out");
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exec("gpio mode 7 out");
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exec("gpio mode 10 in");
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exec("gpio mode 11 in");
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exec("gpio mode 12 in");
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exec("gpio mode 13 in");
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exec("gpio mode 14 in",function(err,stdout,stderr) {
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RED.nodes.registerType("rpi-pibrella in",PibrellaIn);
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RED.nodes.registerType("rpi-pibrella out",PibrellaOut);
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PibrellaIn.prototype.close = function() {
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clearInterval(this._interval);
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}
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PibrellaOut.prototype.close = function() {
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exec("gpio mode "+this.pin+" in");
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}
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});
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});
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