Much tidier Raspberry Pi GPIO node - requires @drogon 's Wiring-Pi installed... more to come

This commit is contained in:
Dave C-J
2013-09-19 10:08:00 +01:00
parent 3b22b585d0
commit 9b320d93ea
6 changed files with 267 additions and 0 deletions

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<!--
Copyright 2013 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-gpio in">
<div class="form-row">
<label for="node-input-pin"><i class="icon-asterisk"></i> Pin</label>
<select type="text" id="node-input-pin" style="width: 150px;">
<option value="7">7</option>
<option value="11">11</option>
<option value="12">12</option>
<option value="13">13</option>
<option value="15">15</option>
<option value="16">16</option>
<option value="18">18</option>
<option value="22">22</option>
</select>
</div>
<div class="form-row">
<label for="node-input-name"><i class="icon-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
<div class="form-row">
<label for="node-input-resistor"><i class=" icon-resize-full"></i> Resistor?</label>
<select type="text" id="node-input-resistor" style="width: 150px;">
<option value="no">no</option>
<option value="pullup">pullup</option>
<option value="pulldown">pulldown</option>
</select>
</div>
<div class="form-tips">Tip: if pull up/down resistor is selected, the <code>gpio-admin</code> command <em>must</em> be used
to do the actual enabling. If 'no' resistor is selected, nothing further needs to be done
to use this node. See <code>man gpio-admin</code> for more details.</div>
</script>
<script type="text/javascript">
RED.nodes.registerType('rpi-gpio in',{
category: 'advanced-input',
color:"#c6dbef",
defaults: {
name: { value:""},
resistor: { value: "no"},
pin: {value:"",required:true},
},
inputs:0,
outputs:1,
icon: "rpi.png",
label: function() {
return this.name||"Pin: "+this.pin;
//+(this.resistor == "no"?"":" ("+(this.resistor=="pullup"?"":"&darr;")+")");
},
labelStyle: function() {
return this.name?"node_label_italic":"";
}
});
</script>

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/**
* Copyright 2013 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.
**/
var RED = require("../../red/red");
var gpio = require("pi-gpio");
function GPIOInNode(n) {
RED.nodes.createNode(this,n);
this.buttonState = -1;
this.pin = n.pin;
this.resistor = n.resistor;
var node = this;
if (this.pin) {
var setupPin = function(err) {
if (err) {
node.error(err);
} else {
node._interval = setInterval(function(){
gpio.read(node.pin, function(err, value) {
if(err){
node.error(err);
} else{
if(node.buttonState !== value){
var previousState = node.buttonState;
node.buttonState = value;
if (previousState !== -1) {
var msg = {payload:node.buttonState};
node.send(msg);
}
}
}
});
}, 50);
}
};
if (this.resistor == "no") {
gpio.open(this.pin,"input",setupPin());
} else {
// Assume enabled externally via gpio-admin
setupPin();
}
} else {
this.error("Invalid GPIO pin: "+this.pin);
}
}
RED.nodes.registerType("rpi-gpio in",GPIOInNode);
GPIOInNode.prototype.close = function() {
clearInterval(this._interval);
if (this.resistor == "no") {
gpio.close(this.pin);
}
}

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<!--
Copyright 2013 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-gpio out">
<div class="form-row">
<label for="node-input-pin"><i class="icon-asterisk"></i> Pin</label>
<select type="text" id="node-input-pin" style="width: 150px;">
<option value="7">7</option>
<option value="11">11</option>
<option value="12">12</option>
<option value="13">13</option>
<option value="15">15</option>
<option value="16">16</option>
<option value="18">18</option>
<option value="22">22</option>
</select>
</div>
<div class="form-row">
<label for="node-input-name"><i class="icon-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
</script>
<script type="text/javascript">
RED.nodes.registerType('rpi-gpio out',{
category: 'advanced-output',
color:"#c6dbef",
defaults: {
name: { value:""},
resistor: { value: "no"},
pin: {value:"",required:true},
},
inputs:1,
outputs:0,
icon: "rpi.png",
align: "right",
label: function() {
return this.name||"Pin: "+this.pin;
//+(this.resistor == "no"?"":" ("+(this.resistor=="pullup"?"":"&darr;")+")");
},
labelStyle: function() {
return this.name?"node_label_italic":"";
}
});
</script>

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/**
* Copyright 2013 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.
**/
var RED = require("../../red/red");
var gpio = require("pi-gpio");
function GPIOOutNode(n) {
RED.nodes.createNode(this,n);
this.pin = n.pin;
var node = this;
if (this.pin) {
gpio.open(this.pin,"output",function(err) {
if (err) {
node.error(err);
} else {
node.on("input",function(msg) {
gpio.write(node.pin,msg.payload,function(err) {
if (err) node.error(err);
});
});
}
});
} else {
this.error("Invalid GPIO pin: "+this.pin);
}
}
RED.nodes.registerType("rpi-gpio out",GPIOOutNode);
GPIOOutNode.prototype.close = function() {
gpio.close(this.pin);
}