frodovdr/node-red-nodes
1
0
Fork 0
mirror of https://github.com/node-red/node-red-nodes.git synced 2025-03-01 10:37:43 +00:00
Code Issues Packages Projects Releases Wiki Activity

add mcp3008 node and bump some packages

Browse Source
This commit is contained in:
Dave Conway-Jones
2016-09-20 08:19:45 +01:00
parent c91e22744f
commit 8e84e19cde
8 changed files with 402 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

71
hardware/mcp3008/pimcp3008.html Normal file
View File

@@ -0,0 +1,71 @@
<!DOCTYPE html>
<!--
Copyright 2016 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="pimcp3008">
<div class="form-row">
<label for="node-input-mode"><i class="fa fa-map-pin"></i> Input pin</label>
<select type="text" id="node-input-pin" style="width:150px;">
<option value=0>A0</option>
<option value=1>A1</option>
<option value=2>A2</option>
<option value=3>A3</option>
<option value=4>A4</option>
<option value=5>A5</option>
<option value=6>A6</option>
<option value=7>A7</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="pimcp3008">
<p>Reads from an MCP3008 Analogue to Digital Converter (ADC) chip on the Pi SPI CE0 connection,
such as the rasp.io/analogzero.</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 7.</p>
<p>Outputs a numeric <code>msg.payload</code> with a range of 0 to 1023, representing 0V to 3.3V.</p>
<p><i>Hint</i>: use a <code>range</code> node to re-scale the values to ones you want.</p>
<p>Also sets <code>msg.topic</code> to <i>adc/{the pin number}</i></p>
<p><b>Warning</b>: Input voltages must not exceed 3.3V</p>
<p>The SPI bus must be enabled for this node to work. This can be achieved by using the
advanced menu (option 9 A5) of the raspi-config utility.</p>
</script>
<script type="text/javascript">
RED.nodes.registerType('pimcp3008',{
category: 'Raspberry Pi',
paletteLabel: 'A/D converter',
color: "#c6dbef",
defaults: {
name: {value:""},
pin: {value:0, required:true}
},
inputs: 1,
outputs: 1,
icon: "rpi.png",
label: function() {
return this.name || "ADC "+((this.pin==="M")?"":this.pin);
},
labelStyle: function() {
return this.name?"node_label_italic":"";
}
});
</script>