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SwarmLab-HowTos/labs/IoT/SensorNode2Server.adoc.html

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<meta name="description" content="IoT Διαδίκτυο των Αντικειμένων">
<meta name="keywords" content="iot, imu, AHRS">
<meta name="author" content="Apostolos rootApostolos@swarmlab.io">
<title>Sensor node/mote Connect2Server</title>
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<body class="article toc2 toc-right">
<div id="header">
<h1>Sensor node/mote Connect2Server</h1>
<div class="details">
<span id="author" class="author">Apostolos rootApostolos@swarmlab.io</span><br>
</div>
<div id="toc" class="toc2">
<div id="toctitle">Πίνακας περιεχομένων</div>
<ul class="sectlevel1">
<li><a href="#_create_a_mote_with_raspberry_pi">1. Create a mote with Raspberry Pi</a>
<ul class="sectlevel2">
<li><a href="#_install_raspberry_pi">1.1. Install Raspberry Pi</a>
<ul class="sectlevel3">
<li><a href="#_step_1_download_raspbian">1.1.1. Step 1: Download Raspbian</a></li>
<li><a href="#_step_2_unzip_the_file">1.1.2. Step 2: Unzip the file</a></li>
<li><a href="#_step_3_write_the_disc_image_to_your_microsd_card">1.1.3. Step 3: Write the disc image to your microSD card</a></li>
<li><a href="#_step_4_enabling_ssh">1.1.4. Step 4: Enabling SSH</a></li>
<li><a href="#_step_5_put_the_microsd_card_in_your_pi_and_boot_up">1.1.5. Step 5: Put the microSD card in your Pi and boot up</a></li>
<li><a href="#_step_6_access_via_ssh">1.1.6. Step 6: Access via SSH</a></li>
<li><a href="#_step_7_configure_your_raspberry_pi">1.1.7. Step 7: Configure your Raspberry Pi.</a></li>
</ul>
</li>
<li><a href="#_arduino_uno_raspberry_pi_serial_communication">1.2. Arduino Uno Raspberry Pi Serial Communication</a>
<ul class="sectlevel3">
<li><a href="#_serial_config_on_raspi">1.2.1. Serial config on Raspi</a></li>
<li><a href="#_reading_in_arduino">1.2.2. Reading in arduino</a></li>
<li><a href="#_python">1.2.3. Python</a></li>
<li><a href="#_php">1.2.4. PHP</a></li>
<li><a href="#_nodejs">1.2.5. NodeJS</a></li>
</ul>
</li>
<li><a href="#_send_data2server">1.3. Send data2server</a>
<ul class="sectlevel3">
<li><a href="#_nodejs_2">1.3.1. NodeJS</a></li>
</ul>
</li>
</ul>
</li>
</ul>
</div>
</div>
<div id="content">
<div id="preamble">
<div class="sectionbody">
<div class="paragraph">
<p><br></p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_create_a_mote_with_raspberry_pi">1. Create a mote with Raspberry Pi</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The Raspberry Pi is a low-cost credit-card sized single-board computer. The Raspberry Pi was created in the UK by the Raspberry Pi Foundation. The Raspberry Pi Foundation&#8217;s goal is to "advance the education of adults and children, particularly in the field of computers, computer science and related subjects."</p>
</div>
<div class="paragraph">
<p><a href="https://simple.wikipedia.org/wiki/Raspberry_Pi">Wikipedia</a></p>
</div>
<div class="paragraph">
<div class="title">Raspberry Pi 2 Model B</div>
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<tr>
<td class="icon">
<i class="fa icon-note" title="Note"></i>
</td>
<td class="content">
<div class="title">Remember</div>
<div class="paragraph">
<p>A mote is a node but a node is not always a mote!</p>
</div>
<div class="paragraph">
<p><span class="image"><img src="data:image/jpg;base64,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
</div>
</td>
</tr>
</table>
</div>
<div class="sect2">
<h3 id="_install_raspberry_pi">1.1. Install Raspberry Pi</h3>
<div class="sect3">
<h4 id="_step_1_download_raspbian">1.1.1. Step 1: Download Raspbian</h4>
<div class="paragraph">
<p><a href="https://www.raspberrypi.org/downloads/raspbian/">Download</a> the Raspbian disc image - Choose Raspbian Lite</p>
</div>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<i class="fa icon-note" title="Note"></i>
</td>
<td class="content">
<div class="title">Why Raspbian Lite?</div>
<div class="paragraph">
<p>Because it is a lightweight version of the Raspbian and it doesn’t have a graphical user interface installed.</p>
</div>
<div class="paragraph">
<p>This means that it doesn’t have any unnecessary software installed that we don’t need for our projects, so this makes it the perfect solution for future automation projects.</p>
</div>
</td>
</tr>
</table>
</div>
</div>
<div class="sect3">
<h4 id="_step_2_unzip_the_file">1.1.2. Step 2: Unzip the file</h4>
<div class="ulist">
<ul>
<li>
<p>Windows users, you’ll want 7-Zip.</p>
</li>
<li>
<p>Linux users will use the appropriately named Unzip.</p>
</li>
</ul>
</div>
</div>
<div class="sect3">
<h4 id="_step_3_write_the_disc_image_to_your_microsd_card">1.1.3. Step 3: Write the disc image to your microSD card</h4>
<div class="paragraph">
<p>Next, pop your microSD card into your computer and write the disc image to it. You’ll need a specific program to do this:</p>
</div>
<div class="ulist">
<ul>
<li>
<p>Windows users, your answer is <a href="https://sourceforge.net/projects/win32diskimager/">Win32 Disk Imager</a>.</p>
</li>
<li>
<p>Linux people, <a href="https://www.balena.io/etcher/">Etcher – which also works on Windows – is what the Raspberry Pi Foundation recommends.</a></p>
</li>
</ul>
</div>
<div class="paragraph">
<p>The process of actually writing the image will be slightly different across these programs, but it’s pretty self-explanatory no matter what you’re using.</p>
</div>
<div class="ulist">
<ul>
<li>
<p>Each of these programs will have you select the destination (make sure you’ve picked your microSD card!) and the disc image (the unzipped Raspbian file).</p>
</li>
<li>
<p>Choose, double-check, and then hit the button to write.</p>
</li>
</ul>
</div>
</div>
<div class="sect3">
<h4 id="_step_4_enabling_ssh">1.1.4. Step 4: Enabling SSH</h4>
<div class="ulist">
<ul>
<li>
<p>Windows users</p>
</li>
</ul>
</div>
<div class="paragraph">
<div class="title">Create ssh file (no extension)</div>
<p><span class="image"><img src="data:image/jpg;base64,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
</div>
<div class="ulist">
<ul>
<li>
<p>Linux Users</p>
</li>
</ul>
</div>
<div class="listingblock">
<div class="title">Create ssh file</div>
<div class="content">
<pre class="highlight"><code class="language-bash" data-lang="bash">sudo fdisk -l
# find dev and Boot partition
sudo mkdir /mnt/sdcardP1
sudo mount /dev/device_partion_boot /mnt/sdcardP1 -rw
cd /mnt/sdcardP1
sudo touch ssh</code></pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_step_5_put_the_microsd_card_in_your_pi_and_boot_up">1.1.5. Step 5: Put the microSD card in your Pi and boot up</h4>
<div class="paragraph">
<p>Your default credentials are username <strong>pi</strong> and password <strong>raspberry</strong></p>
</div>
</div>
<div class="sect3">
<h4 id="_step_6_access_via_ssh">1.1.6. Step 6: Access via SSH</h4>
<div class="ulist">
<ul>
<li>
<p>The boot protocol for the ethernet interface is set to DHCP by default</p>
</li>
</ul>
</div>
<div class="paragraph">
<p>You can find the open SSH ports on your network using the nmap utility:</p>
</div>
<div class="listingblock">
<div class="title">find ports on Network</div>
<div class="content">
<pre class="highlight"><code class="language-bash" data-lang="bash">nmap -p 22 --open -sV 192.168.1.0/24</code></pre>
</div>
</div>
<div class="paragraph">
<p>You should find your pi listed in the output along with the IP assigned to the pi.</p>
</div>
<div class="ulist">
<ul>
<li>
<p>You can change the boot protocol to static and define a static IP address for the pi by editing the ifcfg-eth0 file:</p>
</li>
</ul>
</div>
<div class="listingblock">
<div class="title">static IP address</div>
<div class="content">
<pre class="highlight"><code class="language-bash" data-lang="bash">sudo fdisk -l
# find dev and Boot partition
sudo mkdir /mnt/sdcardP1
sudo mount /dev/device_partion_ext /mnt/sdcardP1 -rw
cd /mnt/sdcardP1
vi /etc/sysconfig/network-scripts/ifcfg-eth0</code></pre>
</div>
</div>
<div class="paragraph">
<p>Then edit the file to suit your needs</p>
</div>
<div class="listingblock">
<div class="title">static IP address</div>
<div class="content">
<pre class="highlight"><code class="language-bash" data-lang="bash">DEVICE=eth0
BOOTPROTO=static
ONBOOT=yes
NETWORK=192.168.1.0
NETMASK=255.255.255.0
IPADDR=192.168.1.200
GATEWAY=192.168.1.1</code></pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_step_7_configure_your_raspberry_pi">1.1.7. Step 7: Configure your Raspberry Pi.</h4>
<div class="paragraph">
<p><strong>raspi-config</strong> is the Raspberry Pi configuration tool</p>
</div>
<div class="listingblock">
<div class="title">config Pi</div>
<div class="content">
<pre class="highlight"><code class="language-bash" data-lang="bash">sudo raspi-config</code></pre>
</div>
</div>
<div class="paragraph">
<p>It has the following options available:</p>
</div>
<div class="listingblock">
<div class="title">config options</div>
<div class="content">
<pre class="highlight"><code class="language-bash" data-lang="bash">┌───────────────────┤ Raspberry Pi Software Configuration Tool (raspi-config) ├────────────────────┐
│ │
│ 1 Change User Password Change password for the current user │
│ 2 Network Options Configure network settings │
│ 3 Boot Options Configure options for start-up │
│ 4 Localisation Options Set up language and regional settings to match your location │
│ 5 Interfacing Options Configure connections to peripherals │
│ 6 Overclock Configure overclocking for your Pi │
│ 7 Advanced Options Configure advanced settings │
│ 8 Update Update this tool to the latest version │
│ 9 About raspi-config Information about this configuration tool │
│ │
│ │
│ │
│ &lt;Select&gt; &lt;Finish&gt; │
│ │
└──────────────────────────────────────────────────────────────────────────────────────────────────┘</code></pre>
</div>
</div>
</div>
</div>
<div class="sect2">
<h3 id="_arduino_uno_raspberry_pi_serial_communication">1.2. Arduino Uno Raspberry Pi Serial Communication</h3>
<div class="sect3">
<h4 id="_serial_config_on_raspi">1.2.1. Serial config on Raspi</h4>
<div class="listingblock">
<div class="title">config 1 (recommended)</div>
<div class="content">
<pre class="highlight"><code class="language-bash" data-lang="bash">whoami
sudo usermod -a -G dialout pi
reboot</code></pre>
</div>
</div>
<div class="paragraph">
<p>This gives read/write permission for all users to the Raspberry Pi (potentially unsafe):</p>
</div>
<div class="listingblock">
<div class="title">config 2</div>
<div class="content">
<pre class="highlight"><code class="language-bash" data-lang="bash">sudo chmod 777 /dev/ttyACM0</code></pre>
</div>
</div>
<div class="paragraph">
<p>This provides some configuration for the Arduino serial connection:</p>
</div>
<div class="listingblock">
<div class="title">configuration for the Arduino serial connection</div>
<div class="content">
<pre class="highlight"><code class="language-bash" data-lang="bash">sudo stty -F /dev/ttyACM0 cs8 9600 ignbrk -brkint -icrnl -imaxbel -opost -onlcr -isig -icanon -iexten -echo -echoe -echok -echoctl -echoke noflsh -ixon -crtscts</code></pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_reading_in_arduino">1.2.2. Reading in arduino</h4>
<div class="listingblock">
<div class="title">C code in the arduino</div>
<div class="content">
<pre class="highlight"><code class="language-bash" data-lang="bash">void loop() {
meas = analogRead(a);
if (Serial.available())
{
if (Serial.read() == '1')
{
Serial.println(meas);
}
}
}</code></pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_python">1.2.3. Python</h4>
<div class="listingblock">
<div class="title">Python code in Raspberry Pi</div>
<div class="content">
<pre class="highlight"><code class="language-python" data-lang="python">import serial
from datetime import datetime
from time import sleep
now = datetime.now()
ser = serial.Serial('/dev/ttyACM0', 9600)
ser.write("1".encode())
sleep(0.05);
s = ser.readline()
file = open("dataset", "a")
file.write(now.strftime("%Y-%m-%d %H:%M") + " Sensor Value:" + str(s)+ "\n")
file.close()</code></pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_php">1.2.4. PHP</h4>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<i class="fa icon-note" title="Note"></i>
</td>
<td class="content">
<div class="title">PHP Class</div>
<div class="paragraph">
<p><a href="https://gist.github.com/gravataLonga/6c89821b845d15e939a0/archive/0d0063684d388a8ff53df8e73e55f4cb1187d7cd.zip">Download Class</a></p>
</div>
</td>
</tr>
</table>
</div>
<div class="listingblock">
<div class="title">PHP code in Raspberry Pi - read</div>
<div class="content">
<pre class="highlight"><code class="language-php" data-lang="php">&lt;?php
include "php_serial.class.php";
$serial = new phpSerial();
$serial-&gt;deviceSet("/dev/ttyACM0");
$serial-&gt;confBaudRate(9600);
$serial-&gt;confParity("none");
$serial-&gt;confCharacterLength(8);
$serial-&gt;confStopBits(1);
$serial-&gt;confFlowControl("none");
$serial-&gt;deviceOpen();
$read = $serial-&gt;readPort();
$serial-&gt;deviceClose();
echo $read</code></pre>
</div>
</div>
<div class="paragraph">
<p>Sends a string to the Arduino.</p>
</div>
<div class="listingblock">
<div class="title">PHP code in Raspberry Pi - send</div>
<div class="content">
<pre class="highlight"><code class="language-php" data-lang="php">&lt;?php
error_reporting(E_ALL);
ini_set('display_errors', '1');
include "php_serial.class.php";
$serial = new phpSerial;
$serial-&gt;deviceSet("/dev/ttyAMA0");
$serial-&gt;confBaudRate(115200);
$serial-&gt;confParity("none");
$serial-&gt;confCharacterLength(8);
$serial-&gt;confStopBits(1);
$serial-&gt;deviceOpen();
$serial-&gt;sendMessage("Hello from my PHP script, say hi back!");
$serial-&gt;deviceClose();
echo "I've sended a message! \n\r";</code></pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_nodejs">1.2.5. NodeJS</h4>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<i class="fa icon-note" title="Note"></i>
</td>
<td class="content">
<div class="paragraph">
<p>Read the writing carefully on your Raspberry Pi circuit board to confirm it indicates something like “Raspberry Pi 4 Model B” or “Raspberry Pi 2 Model B”. If in doubt, run the following command in the terminal:</p>
</div>
<div class="literalblock">
<div class="content">
<pre>$ uname -m</pre>
</div>
</div>
<div class="paragraph">
<p>If the result returned starts with <strong>“armv6”</strong>, you are running a Raspberry Pi based on the older ARMv6 chipset and the next Node.js installation step <strong>will not work</strong>; otherwise, you are ready for the next step.</p>
</div>
</td>
</tr>
</table>
</div>
<div class="listingblock">
<div class="title">Install NodeJS</div>
<div class="content">
<pre class="highlight"><code class="language-bash" data-lang="bash">curl -sL https://deb.nodesource.com/setup_13.x | sudo -E bash -
sudo apt install -y nodejs
npm install raspi-serial</code></pre>
</div>
</div>
<div class="listingblock">
<div class="title">Install NodeJS - armv6</div>
<div class="content">
<pre class="highlight"><code class="language-bash" data-lang="bash">cd ~
wget http://nodejs.org/dist/v6.2.1/node-v6.2.1-linux-armv6l.tar.gz
tar -xzf node-v6.2.1-linux-armv6l.tar.gz
cd node-v6.2.1-linux-armv6l/
sudo cp -R * /usr/local/
export PATH=$PATH:/usr/local/bin
npm install raspi-serial</code></pre>
</div>
</div>
<div class="listingblock">
<div class="title">NodeJS code in Raspberry Pi - read</div>
<div class="content">
<pre class="highlight"><code class="language-c" data-lang="c">mport { init } from 'raspi';
import { Serial } from 'raspi-serial';
init(() =&gt; {
var serial = new Serial();
serial.open(() =&gt; {
serial.on('data', (data) =&gt; {
process.stdout.write(data);
});
serial.write('Hello from raspi-serial');
});
});</code></pre>
</div>
</div>
</div>
</div>
<div class="sect2">
<h3 id="_send_data2server">1.3. Send data2server</h3>
<div class="sect3">
<h4 id="_nodejs_2">1.3.1. NodeJS</h4>
<div class="listingblock">
<div class="title">NodeJS code in Raspberry Pi - send</div>
<div class="content">
<pre class="highlight"><code class="language-c" data-lang="c">...
var serverIOT=IP_SERVER
const socket = require('socket.io-client')('https://'+serverIOT+':9080');
socket.on('connect', function () {
socket.emit('subscribe', log);
var obj = new Object();
obj.room = log;
obj.message = data;
var text = JSON.stringify(obj);
var text1 = Buffer.from(text);
var text5 = text1.toString('base64');
socket.emit('log', text5, log )
//console.log(util.inspect(text5, false, null, true /* enable colors */))
res.json({
'message':"ok"
});
});
...</code></pre>
</div>
</div>
<div class="admonitionblock tip">
<table>
<tr>
<td class="icon">
<i class="fa icon-tip" title="Tip"></i>
</td>
<td class="content">
You can find more information <a href="https://git.swarmlab.io:3000/zeus/iot-swarm-example/src/branch/master" target="_blank" rel="noopener">here</a> and <a href="http://docs.swarmlab.io/SwarmLab-HowTos/index-lab.adoc.html#_iot_swarm_implementation" target="_blank" rel="noopener">here</a>
</td>
</tr>
</table>
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Last updated 2020-10-28 20:13:10 UTC
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