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Add Hummingboard GPIO node
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Dave C-J
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177
hardware/HummingboardGPIO/LICENSE
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177
hardware/HummingboardGPIO/LICENSE
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Apache License
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43
hardware/HummingboardGPIO/README.md
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43
hardware/HummingboardGPIO/README.md
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node-red-node-hbgpio
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====================
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A <a href="http://nodered.org" target="_new">Node-RED</a> node to read and write the digital IO of a SolidRun HummingBoard.
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Install
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-------
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Run the following command in the root directory of your Node-RED install:
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npm install node-red-node-hpgpio
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**Note :** This **should** be run as root in order to move and set SUID permissions on a script to talk to the gpio pins. Alternatively you can run as a normal user and then move the file and change permissions manually.
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sudo cp node_modules/node-red-node-hpgpio/gpiohb /usr/local/bin/
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sudo chmod 4755 /usr/lcoal/bin/gpiohb
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Usage
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-----
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Hummingboard GPIO input and output nodes.
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This requires a small script (gpiohb) to run as root in order to work. It should be placed in /usr/local/bin/ and have SUID permissions 4755.
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**Note:** We are using the actual physical pin numbers as they are easier to locate.
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###Output node
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Expects a <b>msg.payload</b> with either a 0 or 1 (or true or false).
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Will set the selected physical pin high or low depending on the value passed in.
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The initial value of the pin at deploy time can also be set to 0 or 1.
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###Input node
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Generates a **msg.payload** with either a 0 or 1 depending on the state of the input pin.
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The **msg.topic** is set to **pin/{the pin number}**
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**Note:** The input node waits for a change on the level of the pin before reading the value - and then resets to wait for the next interrupt - so it is possible to miss very fast changes as we may still be reading the value when the second edge occurs.
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18
hardware/HummingboardGPIO/fixup.sh
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18
hardware/HummingboardGPIO/fixup.sh
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#!/bin/bash
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echo "*********************************************"
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echo "Moving gpiohb to /usr/local/bin/"
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if [[ $EUID -ne 0 ]]; then
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echo "Not running as user root" 2>&1
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echo "please run the following commands manually"
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echo " sudo cp $PWD/gpiohb /usr/local/bin/gpiohb"
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echo " sudo chmod 4755 /usr/local/bin/gpiohb"
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echo "or re-run npm install as root / sudo"
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echo "*********************************************"
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exit 1
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else
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cp gpiohb /usr/local/bin/
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chmod 4755 /usr/local/bin/gpiohb
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echo "OK - gpiohb moved to /usr/local/bin"
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echo "*********************************************"
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fi
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74
hardware/HummingboardGPIO/gpiohb
Executable file
74
hardware/HummingboardGPIO/gpiohb
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#!/bin/bash
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# There is NO error checking in this program - you can mess up pins big time if you want.
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# gpio mode pin inputtype
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# gpio read pin
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# gpio write pin level
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# gpio pwm pin level
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# gpio close pin
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declare -A pins
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# Map the GPIO names to actual underlying IO numbers
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pins=(["0"]="73" ["1"]="72" ["2"]="71" ["3"]="70" ["4"]="194" ["5"]="195" ["6"]="67" ["7"]="1")
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usage() {
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echo ""
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echo " gpiohb mode {pin} {in|out}"
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echo " gpiohb read {pin}"
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echo " gpiohb write {pin} {0|1}"
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echo " gpiohb wfi {pin} {rising|falling|both|none}"
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#echo " gpiohb pwm {pin} {0-1023}"
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echo " gpiohb close {pin}"
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echo ""
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}
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while [ "$1" != "" ]; do
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case $1 in
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-h | --help | -?)
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usage
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exit
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;;
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mode)
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echo $1 $2 $3
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if [ "$3" != "out" ] ; then
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$3="in"
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fi
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pin=${pins[$2]}
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echo $pin > /sys/class/gpio/export
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echo $3 > /sys/class/gpio/gpio$pin/direction
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exit
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;;
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read)
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pin=${pins[$2]}
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cat /sys/class/gpio/gpio$pin/value
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exit
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;;
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write)
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pin=${pins[$2]}
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echo $3 > /sys/class/gpio/gpio$pin/value
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exit
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;;
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wfi)
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pin=${pins[$2]}
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echo $3 > /sys/class/gpio/gpio$pin/edge
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exit
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;;
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pwm)
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# Not implemented yet....
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pin=${pins[$2]}
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exit
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;;
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close)
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pin=${pins[$2]}
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echo $pin > /sys/class/gpio/unexport
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exit
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;;
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*)
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echo "ERROR: unknown parameter \"$PARAM\""
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usage
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exit 1
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;;
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esac
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shift
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done
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162
hardware/HummingboardGPIO/hb-gpio.html
Normal file
162
hardware/HummingboardGPIO/hb-gpio.html
Normal file
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<!--
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||||||
|
Copyright 2014 IBM Corp.
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||||||
|
|
||||||
|
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.
|
||||||
|
-->
|
||||||
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|
||||||
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<script type="text/x-red" data-template-name="hb-gpio in">
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<div class="form-row">
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<label for="node-input-pin"><i class="fa fa-circle"></i> GPIO Pin</label>
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<select type="text" id="node-input-pin" style="width: 250px;">
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<option value='' disabled selected style='display:none;'>select pin</option>
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<option value="7">7 - GPIO 1</option>
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<option value="11">11 - GPIO 73</option>
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<option value="12">12 - GPIO 72</option>
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<option value="13">13 - GPIO 71</option>
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<option value="15">15 - GPIO 10</option>
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<option value="16">16 - GPIO 194</option>
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<option value="18">18 - GPIO 195</option>
|
||||||
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<option value="22">22 - GPIO 87</option>
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</select>
|
||||||
|
<span id="pitype"></span>
|
||||||
|
</div>
|
||||||
|
<!-- <div class="form-row">
|
||||||
|
<label for="node-input-intype"><i class="fa fa-level-up"></i> Resistor ?</label>
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||||||
|
<select type="text" id="node-input-intype" style="width: 150px;">
|
||||||
|
<option value="tri">none</option>
|
||||||
|
<option value="up">pullup</option>
|
||||||
|
<option value="down">pulldown</option>
|
||||||
|
</select>
|
||||||
|
</div> -->
|
||||||
|
<div class="form-row">
|
||||||
|
<label> </label>
|
||||||
|
<input type="checkbox" id="node-input-read" style="display: inline-block; width: auto; vertical-align: top;">
|
||||||
|
<label for="node-input-read" style="width: 70%;">Read initial state of pin on deploy/restart ?</label>
|
||||||
|
</div>
|
||||||
|
<br/>
|
||||||
|
<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>
|
||||||
|
<div class="form-tips">Tip: Only Digital Input is supported - input must be 0 or 1.</div>
|
||||||
|
</script>
|
||||||
|
|
||||||
|
<script type="text/x-red" data-help-name="hb-gpio in">
|
||||||
|
<p>Hummingboard GPIO input pin node. Generates a <b>msg.payload</b> with either a 0 or 1 depending on the state of the input pin.</p>
|
||||||
|
<p>You may also enable the input pullup resitor or the pulldown resistor.</p>
|
||||||
|
<p>The <b>msg.topic</b> is set to <i>pi/{the pin number}</i></p>
|
||||||
|
<p><b>Note:</b> we are using the actual physical pin numbers on connector P1 as they are easier to locate.</p>
|
||||||
|
<p><b>Note:</b> requires the gpiohb command to be executeable as root in order to work.</p>
|
||||||
|
</script>
|
||||||
|
|
||||||
|
<script type="text/javascript">
|
||||||
|
RED.nodes.registerType('hb-gpio in',{
|
||||||
|
category: 'Hummingboard',
|
||||||
|
color:"#c6dbef",
|
||||||
|
defaults: {
|
||||||
|
name: { value:"" },
|
||||||
|
pin: { value:"",required:true,validate:RED.validators.number() },
|
||||||
|
intype: { value: "in" },
|
||||||
|
read: { value:false }
|
||||||
|
},
|
||||||
|
inputs:0,
|
||||||
|
outputs:1,
|
||||||
|
icon: "arrow.png",
|
||||||
|
label: function() {
|
||||||
|
return this.name||"Pin: "+this.pin ;
|
||||||
|
},
|
||||||
|
labelStyle: function() {
|
||||||
|
return this.name?"node_label_italic":"";
|
||||||
|
}
|
||||||
|
});
|
||||||
|
</script>
|
||||||
|
|
||||||
|
|
||||||
|
<script type="text/x-red" data-template-name="hb-gpio out">
|
||||||
|
<div class="form-row">
|
||||||
|
<label for="node-input-pin"><i class="fa fa-circle"></i> GPIO Pin</label>
|
||||||
|
<select type="text" id="node-input-pin" style="width: 250px;">
|
||||||
|
<option value='' disabled selected style='display:none;'>select pin</option>
|
||||||
|
<option value="7">7 - GPIO 1</option>
|
||||||
|
<option value="11">11 - GPIO 73</option>
|
||||||
|
<option value="12">12 - GPIO 72</option>
|
||||||
|
<option value="13">13 - GPIO 71</option>
|
||||||
|
<option value="15">15 - GPIO 10</option>
|
||||||
|
<option value="16">16 - GPIO 194</option>
|
||||||
|
<option value="18">18 - GPIO 195</option>
|
||||||
|
<option value="22">22 - GPIO 87</option>
|
||||||
|
</select>
|
||||||
|
<span id="pitype"></span>
|
||||||
|
</div>
|
||||||
|
<div class="form-row" id="node-set-tick">
|
||||||
|
<label> </label>
|
||||||
|
<input type="checkbox" id="node-input-set" style="display: inline-block; width: auto; vertical-align: top;">
|
||||||
|
<label for="node-input-set" style="width: 70%;">Initialise pin state ?</label>
|
||||||
|
</div>
|
||||||
|
<div class="form-row" id="node-set-state">
|
||||||
|
<label for="node-input-level"> </label>
|
||||||
|
<select id="node-input-level" style="width: 250px;">
|
||||||
|
<option value="0">initial level of pin - low (0)</option>
|
||||||
|
<option value="1">initial level of pin - high (1)</option>
|
||||||
|
</select>
|
||||||
|
</div>
|
||||||
|
<br/>
|
||||||
|
<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>
|
||||||
|
<div class="form-tips" id="dig-tip"><b>Tip</b>: For digital output - input must be 0 or 1.</div>
|
||||||
|
<!-- <div class="form-tips" id="pwm-tip"><b>Tip</b>: For PWM output - input must be between 0 to 1023.</div> -->
|
||||||
|
</script>
|
||||||
|
|
||||||
|
<script type="text/x-red" data-help-name="hb-gpio out">
|
||||||
|
<p>Hummingboard GPIO output pin node. Expects a <b>msg.payload</b> with either a 0 or 1 (or true or false).</p>
|
||||||
|
<p>Will set the selected physical pin high or low depending on the value passed in.</p>
|
||||||
|
<p>The initial value of the pin at deploy time can also be set to 0 or 1.</p>
|
||||||
|
<p><b>Note:</b> we are using the actual physical pin numbers as they are easier to locate.</p>
|
||||||
|
<p><b>Note:</b> requires the gpiohb command to be executeable as root in order to work.</p>
|
||||||
|
</script>
|
||||||
|
|
||||||
|
<script type="text/javascript">
|
||||||
|
RED.nodes.registerType('hb-gpio out',{
|
||||||
|
category: 'Hummingboard',
|
||||||
|
color:"#c6dbef",
|
||||||
|
defaults: {
|
||||||
|
name: { value:"" },
|
||||||
|
pin: { value:"",required:true,validate:RED.validators.number() },
|
||||||
|
set: { value:"" },
|
||||||
|
level: { value:"0" }
|
||||||
|
},
|
||||||
|
inputs:1,
|
||||||
|
outputs:0,
|
||||||
|
icon: "arrow.png",
|
||||||
|
align: "right",
|
||||||
|
label: function() {
|
||||||
|
return this.name||"Pin: "+this.pin ;
|
||||||
|
},
|
||||||
|
labelStyle: function() {
|
||||||
|
return this.name?"node_label_italic":"";
|
||||||
|
},
|
||||||
|
oneditprepare: function() {
|
||||||
|
var setstate = function () {
|
||||||
|
if ($('#node-input-set').is(":checked")) {
|
||||||
|
$("#node-set-state").show();
|
||||||
|
} else {
|
||||||
|
$("#node-set-state").hide();
|
||||||
|
}
|
||||||
|
};
|
||||||
|
$("#node-input-set").change(function () { setstate(); });
|
||||||
|
setstate();
|
||||||
|
}
|
||||||
|
});
|
||||||
|
</script>
|
||||||
188
hardware/HummingboardGPIO/hb-gpio.js
Normal file
188
hardware/HummingboardGPIO/hb-gpio.js
Normal file
@ -0,0 +1,188 @@
|
|||||||
|
/**
|
||||||
|
* Copyright 2014 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.
|
||||||
|
**/
|
||||||
|
|
||||||
|
module.exports = function(RED) {
|
||||||
|
"use strict";
|
||||||
|
var exec = require('child_process').exec;
|
||||||
|
var fs = require('fs');
|
||||||
|
|
||||||
|
var gpioCommand = '/usr/local/bin/gpiohb';
|
||||||
|
|
||||||
|
//if (!fs.existsSync("/dev/ttyAMA0")) { // unlikely if not on a Pi
|
||||||
|
//throw "Info : Ignoring Raspberry Pi specific node.";
|
||||||
|
//}
|
||||||
|
|
||||||
|
if (!fs.existsSync(gpioCommand)) { // gpio command not installed
|
||||||
|
throw "Info : Can't find "+gpioCommand+" command.";
|
||||||
|
}
|
||||||
|
|
||||||
|
// Map physical P1 pins to Gordon's Wiring-Pi Pins (as they should be V1/V2 tolerant)
|
||||||
|
var pintable = {
|
||||||
|
// Physical : WiringPi
|
||||||
|
"11":"0",
|
||||||
|
"12":"1",
|
||||||
|
"13":"2",
|
||||||
|
"15":"3",
|
||||||
|
"16":"4",
|
||||||
|
"18":"5",
|
||||||
|
"22":"6",
|
||||||
|
"7":"7",
|
||||||
|
"3":"8",
|
||||||
|
"5":"9",
|
||||||
|
"24":"10",
|
||||||
|
"26":"11",
|
||||||
|
"19":"12",
|
||||||
|
"21":"13",
|
||||||
|
"23":"14",
|
||||||
|
"8":"15",
|
||||||
|
"10":"16",
|
||||||
|
"27":"30",
|
||||||
|
"28":"31",
|
||||||
|
"29":"21",
|
||||||
|
"31":"22",
|
||||||
|
"32":"26",
|
||||||
|
"33":"23",
|
||||||
|
"35":"24",
|
||||||
|
"36":"27",
|
||||||
|
"37":"25",
|
||||||
|
"38":"28",
|
||||||
|
"40":"29"
|
||||||
|
}
|
||||||
|
var tablepin = {
|
||||||
|
// WiringPi : Physical
|
||||||
|
"0":"11",
|
||||||
|
"1":"12",
|
||||||
|
"2":"13",
|
||||||
|
"3":"15",
|
||||||
|
"4":"16",
|
||||||
|
"5":"18",
|
||||||
|
"6":"22",
|
||||||
|
"7":"7",
|
||||||
|
"8":"3",
|
||||||
|
"9":"5",
|
||||||
|
"10":"24",
|
||||||
|
"11":"26",
|
||||||
|
"12":"19",
|
||||||
|
"13":"21",
|
||||||
|
"14":"23",
|
||||||
|
"15":"8",
|
||||||
|
"16":"10",
|
||||||
|
"30":"27",
|
||||||
|
"31":"28",
|
||||||
|
"21":"29",
|
||||||
|
"22":"31",
|
||||||
|
"26":"32",
|
||||||
|
"23":"33",
|
||||||
|
"24":"35",
|
||||||
|
"27":"36",
|
||||||
|
"25":"37",
|
||||||
|
"28":"38",
|
||||||
|
"29":"40"
|
||||||
|
}
|
||||||
|
|
||||||
|
function GPIOHBInNode(n) {
|
||||||
|
RED.nodes.createNode(this,n);
|
||||||
|
this.buttonState = -1;
|
||||||
|
this.pin = pintable[n.pin];
|
||||||
|
this.intype = n.intype;
|
||||||
|
this.read = n.read || false;
|
||||||
|
if (this.read) { this.buttonState = -2; }
|
||||||
|
var node = this;
|
||||||
|
|
||||||
|
var readit = function() {
|
||||||
|
exec(gpioCommand+" read "+node.pin, function(err,stdout,stderr) {
|
||||||
|
if (err) { node.error(err); }
|
||||||
|
else {
|
||||||
|
exec(gpioCommand+" wfi "+node.pin + " both", function(err,stdo,stde) {
|
||||||
|
if (err) { node.error(err); }
|
||||||
|
else { readit(); }
|
||||||
|
});
|
||||||
|
if (node.buttonState !== Number(stdout)) {
|
||||||
|
var previousState = node.buttonState;
|
||||||
|
node.buttonState = Number(stdout);
|
||||||
|
if (previousState !== -1) {
|
||||||
|
var msg = {topic:"pi/"+tablepin[node.pin], payload:(node.buttonState === 0 ? 0 : 1)};
|
||||||
|
node.send(msg);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
if (node.pin !== undefined) {
|
||||||
|
exec(gpioCommand+" mode "+node.pin+" "+node.intype, function(err,stdout,stderr) {
|
||||||
|
if (err) { node.error(err); }
|
||||||
|
else {
|
||||||
|
readit();
|
||||||
|
}
|
||||||
|
});
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
node.error("Invalid GPIO pin: "+node.pin);
|
||||||
|
}
|
||||||
|
|
||||||
|
node.on("close", function() {
|
||||||
|
clearInterval(node._interval);
|
||||||
|
exec(gpioCommand+" close "+node.pin);
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
function GPIOHBOutNode(n) {
|
||||||
|
RED.nodes.createNode(this,n);
|
||||||
|
this.pin = pintable[n.pin];
|
||||||
|
this.set = n.set || false;
|
||||||
|
this.level = n.level || 0;
|
||||||
|
this.out = n.out || "out";
|
||||||
|
var node = this;
|
||||||
|
(node.out === "pwm") ? (node.op = "pwm") : (node.op = "write");
|
||||||
|
|
||||||
|
if (node.pin !== undefined) {
|
||||||
|
exec(gpioCommand+" mode "+node.pin+" "+node.out, function(err,stdout,stderr) {
|
||||||
|
if (err) { node.error(err); }
|
||||||
|
else {
|
||||||
|
if (node.set && (node.out === "out")) {
|
||||||
|
exec(gpioCommand+" write "+node.pin+" "+node.level, function(err,stdout,stderr) {
|
||||||
|
if (err) { node.error(err); }
|
||||||
|
});
|
||||||
|
}
|
||||||
|
node.on("input", function(msg) {
|
||||||
|
if (msg.payload === "true") { msg.payload = true; }
|
||||||
|
if (msg.payload === "false") { msg.payload = false; }
|
||||||
|
var out = Number(msg.payload);
|
||||||
|
var limit = 1;
|
||||||
|
if (node.out === "pwm") { limit = 1023; }
|
||||||
|
if ((out >= 0) && (out <= limit)) {
|
||||||
|
exec(gpioCommand+" "+node.op+" "+node.pin+" "+out, function(err,stdout,stderr) {
|
||||||
|
if (err) { node.error(err); }
|
||||||
|
});
|
||||||
|
}
|
||||||
|
else { node.warn("Invalid input: "+out); }
|
||||||
|
});
|
||||||
|
}
|
||||||
|
});
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
node.error("Invalid GPIO pin: "+node.pin);
|
||||||
|
}
|
||||||
|
|
||||||
|
node.on("close", function() {
|
||||||
|
exec(gpioCommand+" close "+node.pin);
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
RED.nodes.registerType("hb-gpio in",GPIOHBInNode);
|
||||||
|
RED.nodes.registerType("hb-gpio out",GPIOHBOutNode);
|
||||||
|
}
|
||||||
26
hardware/HummingboardGPIO/package.json
Normal file
26
hardware/HummingboardGPIO/package.json
Normal file
@ -0,0 +1,26 @@
|
|||||||
|
{
|
||||||
|
"name" : "node-red-node-hbgpio",
|
||||||
|
"version" : "0.0.1",
|
||||||
|
"description" : "A Node-RED node for the GPIO of the Hummingboard",
|
||||||
|
"dependencies": {
|
||||||
|
},
|
||||||
|
"repository" : {
|
||||||
|
"type":"tgz",
|
||||||
|
"url":"http://dcj.dtdns.net/npms/hbgpio.tgz"
|
||||||
|
},
|
||||||
|
"license": "Apache-2.0",
|
||||||
|
"keywords": [ "node-red", "hummingboard", "gpio" ],
|
||||||
|
"node-red" : {
|
||||||
|
"nodes": {
|
||||||
|
"hb-gpio": "hb-gpio.js"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"scripts": {
|
||||||
|
"postinstall": "./fixup.sh"
|
||||||
|
},
|
||||||
|
"author": {
|
||||||
|
"name": "Dave Conway-Jones",
|
||||||
|
"email": "ceejay@vnet.ibm.com",
|
||||||
|
"url": "http://nodered.org"
|
||||||
|
}
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue
Block a user