AWS IoT with Raspberry Pi, Node.js and Python

Raspberry Pi, Node.js and Python scripts for AWS IoT, used in Temasek Polytechnic Smart IoT Applications course. See also:

• https://github.com/lupyuen/RaspberryPiImage
• https://www.facebook.com/photo.php?fbid=10203864039081512&set=a.1222080012259.25950.1836747147&type=3&theater

Preparing the SD Card for Raspberry Pi 2 and 3:

0. Download full version of Raspbian Jessie: https://www.raspberrypi.org/downloads/raspbian/

1. Download full version of Noobs: https://www.raspberrypi.org/downloads/noobs/

2. Burn the Rasbian image to SD card: https://www.raspberrypi.org/documentation/installation/installing-images/README.md

3. Boot and update the OS

sudo apt-get update sudo apt-get upgrade

When prompted to replace lightdm.conf, respond 'Y'

0. Attach the GrovePi+ Shield and sensors: http://www.seeedstudio.com/depot/GrovePi-Starter-Kit-for-Raspberry-Pi-ABB23-CE-certified-p-2572.html?cPath=122_154_151

0. Connect a USB keyboard, mouse and HDMI monitor. Boot and connect to wifi. 

0. Alternatively, boot with console cable, open a serial port connection from your Mac (or PC):

screen /dev/tty.usbserial 115200

And connect to wifi manually:

sudo vi /etc/wpa_supplicant/wpa_supplicant.conf

Add:

network={ ssid="YOUR_SSID" psk="YOUR_PASSWORD" key_mgmt=WPA-PSK }

Restart the network:

sudo ifdown --exclude=lo -a && sudo ifup --exclude=lo -a sudo dhclient -r sudo dhclient

0. Click Menu -> Preferences -> Raspberry Pi Configuration.  Click Interfaces. Enable SSH, SPI, I2C and Serial.  Set time zone to GMT+8.  Set keyboard to US.  Set locale to English US UTF-8 (en_US.UTF-8). From the advanced menu, change the memory split for the GPU to “16”.
Reboot.

0. Install latest "Latest Features" Node.js from https://nodejs.org/en/download/ (ARMv7)

wget https://nodejs.org/dist/v6.9.0/node-v6.9.0-linux-armv7l.tar.xz tar -xvf node-v6.9.0-linux-armv7l.tar.xz sudo cp -r node-v6.9.0-linux-armv7l /opt sudo mv /usr/bin/nodejs /usr/bin/nodejs.v0.10.29 sudo rm /usr/bin/node sudo ln -s /opt/node-v6.9.0-linux-armv7l/bin/node /usr/bin/node sudo ln -s /opt/node-v6.9.0-linux-armv7l/bin/node /usr/bin/nodejs sudo ln -s /opt/node-v6.9.0-linux-armv7l/lib/node_modules/npm/bin/npm-cli.js /usr/bin/npm

0. Download the GrovePi+ software:

git clone https://github.com/DexterInd/GrovePi.git

0. Run:

cd ~/GrovePi/Script chmod +x grovepi_python3_install.sh sudo ./grovepi_python3_install.sh

Reboot.  (Note: Don't use install.sh because it caused my Raspberry Pi 3 to boot with a black screen.)

0. Connect the Grove buzzer to port D8.  Test by running:

cd ~/GrovePi/Software/Python python3 grove_buzzer.py

0. Check that Python supports TLS.  Otherwise MQTT requests to AWS IoT will fail.

python3 import ssl ssl.OPENSSL_VERSION

Ensure that OpenSSL version >=1.0.1

0. Tell Node.js to use python2 instead of python3 for building NPM packages

sudo npm config -g set python /usr/bin/python2.7

0. Install common tools

sudo apt install htop sudo apt install telnet sudo apt install cmake sudo apt install zsh curl -L https://raw.github.com/robbyrussell/oh-my-zsh/master/tools/install.sh | sh

0. Set the system default to python3.4 instead of python2.x.  Python 2.x does not support TLS.

nano ~/.bash_aliases

Change to

Some more alias to avoid making mistakes:

alias rm='rm -i' alias cp='cp -i' alias mv='mv -i'

For TP IoT: Alias python to python3 because python2 doesn't support TLS needed for AWS IoT.

alias python=python3

Do the same for `nano ~/.zshenv`

0. Install paho, the MQTT library for Python

sudo pip3 install paho-mqtt

0. Remove unnecessary packages so we can clone the NOOBS image easily:

rm -rf ~/Documents/* rm -rf ~/python_games/ rm -rf ~/GrovePi/Firmware rm -rf ~/GrovePi/Hardware rm -rf ~/GrovePi/Software/CSharp rm -rf ~/GrovePi/Software/Scratch

0. Copy /home/pi/TP-IoT from 
https://github.com/lupyuen/RaspberryPiImage to /home/pi/TP-IoT on the Raspberry Pi

0. Run the sample script to send data to AWS IoT MQTT 

cd /home/pi/TP-IoT python send_sensor_data.py

You should see

pi@raspberrypi:~/TP-IoT $ python send_sensor_data.py Connecting to AWS IoT... Log: Received CONNACK (0, 0) Connected to AWS IoT Subscribing to MQTT topic $aws/things/g88_pi/shadow/update/accepted Log: Received SUBACK Sending sensor data to AWS IoT... { "state": { "reported": { "sound_level": 320, "light_level": 410, "temperature": NaN, "humidity": 0.0, "timestamp": "2016-04-17T14:55:17.812605" } } } Log: Sending PUBLISH (dFalse, q0, r0, m2, '$aws/things/g88_pi/shadow/update', ... (145 bytes) Sent to AWS IoT

0. Install pigpio, which is needed by the Python script for reading data from the DHT22 temperature+humidity sensor directly without using resistors: http://abyz.co.uk/rpi/pigpio/examples.html

Instructions from http://abyz.co.uk/rpi/pigpio/download.html:

cd /tmp rm pigpio.zip sudo rm -rf PIGPIO wget abyz.co.uk/rpi/pigpio/pigpio.zip unzip pigpio.zip cd PIGPIO make -j4 sudo make install

0. Install GrovePi for Node.js

sudo npm install -g node-grovepi

0. Assign hostname: https://github.com/adafruit/Adafruit-Pi-Finder#adafruit-raspberry-pi-finder

sudo apt-get install avahi-daemon sudo apt-get install netatalk

Assign local domain e.g. g88pi.local where g88 is the group name: http://www.howtogeek.com/167190/how-and-why-to-assign-the-.local-domain-to-your-raspberry-pi/

0. Change hostname to g88pi where g88 is the group name: http://www.howtogeek.com/167195/how-to-change-your-raspberry-pi-or-other-linux-devices-hostname/

sudo vi /etc/hosts sudo vi /etc/hostname sudo /etc/init.d/hostname.sh sudo reboot now

Change raspberrypi to g88pi where g88 is the group name.

0. Share Pi filesystem: http://raspberrywebserver.com/serveradmin/share-your-raspberry-pis-files-and-folders-across-a-network.html

sudo apt-get install samba samba-common-bin sudo vi /etc/samba/smb.conf

Change to

workgroup = WORKGROUP wins support = yes

Must use WORKGROUP not TP-IOT!
Change

[homes] comment = Home Directories browseable = no

to

[homes] ; comment = Home Directories ; browseable = no

Add:

[pihome] comment= Pi Home path=/home/pi browseable=Yes writeable=Yes valid users = pi only guest=no create mask=0777 directory mask=0777 public=no read only = no force user = root

Set the SMB password:

sudo smbpasswd -a pi raspberry sudo service smbd restart

Must use "force user = root".
Must use “valid users = pi".

0. Allow users to set WiFi password from Windows by running /boot/set_wifi_password_from_windows.  We should check at startup whether there is a pending update to the WiFi config.

crontab -e

Add these lines:

At every reboot, check whether there are pending updates to the wifi config set by set_wifi_password.

@reboot /home/pi/WiFi/check_wifi_updates.sh

0. Copy the following files from https://github.com/lupyuen/RaspberryPiImage/blob/master/boot/ to /boot.  These programs allow the user to set the Raspberry Pi wifi credentials by inserting the SD card into Windows, Mac and Linux computers.

set_wifi_password_from_mac set_wifi_password_from_pi.py set_wifi_password_from_windows.exe

0. set_wifi_password_from_windows.exe was created by running the following command in Windows:

pyinstaller --onefile set_wifi_password_from_pi.py

set_wifi_password_from_mac was created by running the above command in Mac OS.

## Install Ajenti Web Console

0. Install Ajenti: http://support.ajenti.org/topics/1121-installing-on-ubuntu/

sudo bash wget -O- https://raw.github.com/ajenti/ajenti/1.x/scripts/install-ubuntu.sh | sudo sh exit sudo service ajenti restart

0. Update Ajenti config to start at port 80 instead of 8080.  Edit /etc/ajenti/config.json.  Change

"port": 8000

to

"port": 80

Change

"ssl": { "enable": true,

to

"ssl": { "enable": false,

0. Browse to
http://raspberrypi/.
Login in as root, password admin
Change the user authentication to sync with local users:

Configure -> User -> Authentication -> Sync with OS Users

Ensure pi has all permissions.
Restart Ajenti, log in as pi, password raspberry.

0. Copy `index.html, auth.html` from
https://github.com/lupyuen/RaspberryPiImage/tree/master/usr/share/pyshared/ajenti/plugins/main/content/static 
to 
`/usr/share/pyshared/ajenti/plugins/main/content/static` and 
`/usr/lib/pymodules/python2.7/ajenti/plugins/main/content/static`

This enables Font Awesome to support icons in the text widget, and hides the SSL warning messages.  Also it allows launching of tty.js as our web terminal.

0. Copy `main.py` from
https://github.com/lupyuen/RaspberryPiImage/tree/master/usr/share/pyshared/ajenti/plugins/main 
to 
`/usr/share/pyshared/ajenti/plugins/main` and 
`/usr/lib/pymodules/python2.7/ajenti/plugins/main`

The allows launching of tty.js as our web terminal by passing the authentication token from Ajenti to tty.js.

0. Add text widget for tty.js web terminal:

Welcome to the Ajenti Web Console
For monitoring and controlling your Raspberry Pi
Open Raspberry Pi Web Terminal

0. Add text widget for AWS:

Amazon Web Services and Common Links

<a target='_blank' href='https://tp-iot.signin.aws.amazon.com/console'

Login to Amazon Web Services

<a target='_blank' href='https://us-west-2.console.aws.amazon.com/iot/home?region=us-west-2#/dashboard'

AWS IoT for controlling your IoT devices

<a target='_blank' href='https://us-west-2.console.aws.amazon.com/sns/v2/home?region=us-west-2#/topics'

Simple Notification Service for email alerts

<a target='_blank' href='https://us-west-2.console.aws.amazon.com/rds/home?region=us-west-2#dbinstances:'

MySQL database for storing sensor data

<a target='_blank' href='https://us-west-2.console.aws.amazon.com/lambda/home?region=us-west-2#/functions'

Lambda for executing your programs in the cloud

<a target='_blank' href='https://service.sumologic.com/ui/'

Sumo Logic for IoT monitoring and dashboards

<a target='_blank' href='https://tp-iot.slack.com/'

Slack for realtime collaboration

<a target='_blank' href='http://bit.ly/tp-iot'

Frequently Asked Questions

##  Install tty.js Web Terminal

0. Install tty.js web terminal: https://github.com/chjj/tty.js/

cd /tmp npm init (Select all defaults) npm install --save tty.js sudo mkdir /opt/tty.js sudo cp package.json /opt/tty.js sudo cp -r node_modules /opt/tty.js

0. Copy `run.sh, daemon.sh` from 

https://github.com/lupyuen/RaspberryPiImage/tree/master/opt/tty.js

to `/opt/tty.js`

0. Delete `/opt/tty.js/node_modules/tty.js/static/index.html.` This file will be rendered after successful token authentication.

0. Copy `index.html` and `tty.js` from 

https://github.com/lupyuen/RaspberryPiImage/tree/master/opt/tty.js/node_modules/tty.js/lib 

to `/opt/tty.js/node_modules/tty.js/lib`

These files implement the token authentication between Ajenti and tty.js.

0. To open a terminal window automatically upon launch, copy

https://github.com/lupyuen/RaspberryPiImage/blob/master/opt/tty.js/node_modules/tty.js/static/tty.js

to `/opt/tty.js/node_modules/tty.js/static/tty.js`
   
0. Configure tty.js as a service that starts automatically.  Copy `tty.js` from

https://github.com/lupyuen/RaspberryPiImage/tree/master/etc/init.d

to `/etc/init.d.`  Ensure it has execute permission.

0. Install the service:

sudo insserv tty.js (Reboot the pi) sudo service tty.js start sudo service tty.js status

tty.js web-based terminal is now running on port 3000.

## Send Raspberry Pi logs to Sumo Logic 

0. In Sumo Logic, click Manage --> Setup Wizard --> Set Up Streaming Data --> All Other Sources --> Syslog --> New Collector

0. Install collector a EC2 Ubuntu machine (LogServer)

0. On Raspberry Pi, install syslog-ng

sudo apt-get install syslog-ng sudo vi /etc/syslog-ng/syslog-ng.conf

Add Sumo Logic as a log destination:

Send logs to Sumo Logic log collector.

destination remote_log_server { udp("54.169.166.79" port(514)); }; log { source(s_src); destination(remote_log_server); };

Restart syslog-ng:

sudo service syslog-ng restart

## Update AWS DNS when local IP address changes

0. Copy `update_dns.sh` and `fixpermissions.sh` from

https://github.com/lupyuen/RaspberryPiImage/blob/master/home/pi/DNS

to `/home/pi/DNS` and grant execute permission to the scripts.  This `update_dns.sh` script calls AWS API Gateway to run a Lambda function UpdateDNS that updates the AWS DNS IP address: 

https://github.com/lupyuen/AWSIOT/blob/master/nodejs/UpdateDNS.js

The `fixpermissions.sh` script fixes the filesystem permissions so that the `pi` user has access to all files in the home directory. Copying files over the file share into the Pi will create the files as `root`.

0. Add task to crontab to update the DNS every minute:

crontab -e

Add:

At every minute, fix the filesystem permissions so that pi user has access to all files in the home directory.

Network file access may have caused permission problems. Also update the AWS DNS with our local IP address, e.g.

g88pi.tp-iot.com = 1.2.3.4

• • • • • /home/pi/DNS/fixpermissions.sh & /home/pi/DNS/update_dns.sh

Enable Bluetooth Support

This works for Raspberry Pi 3 with built-in Bluetooth, and Raspberry Pi 2 with Bluetooth USB adapter. We will install pybluez as the Python library for scanning Bluetooth beacons.

Based on http://www.techradar.com/sg/how-to/computing/how-to-get-wi-fi-and-bluetooth-working-on-raspberry-pi-3-1316938

cd /home/pi
sudo apt install bluetooth bluez blueman
sudo apt install python3-dev
sudo apt install libbluetooth-dev
sudo pip3 install pybluez
sudo apt install libboost-dev
sudo apt install libboost-python-dev
sudo apt install libboost-thread-dev
sudo apt install glib-2.0
sudo apt install libglib2.0-dev
sudo pip3 install gattlib
wget https://github.com/karulis/pybluez/zipball/master
mv master master.zip
unzip master.zip
rm master.zip
cd karulis-pybluez-*/examples/ble
sudo python3 beacon_scan.py

beacon_scan.py returns a list of beacons detected:

Beacon: address:C1:8B:BF:C6:4E:56 uuid:b9407f30-f5f8-466e-aff9-25556b57fe6d major:22094 minor:50879 txpower:182 rssi:-75
Beacon: address:D4:AC:86:66:3A:0D uuid:b9407f30-f5f8-466e-aff9-25556b57fe6d major:3386 minor:26246 txpower:182 rssi:-79
Beacon: address:D8:22:CB:53:63:B0 uuid:b9407f30-f5f8-466e-aff9-25556b57fe6d major:45155 minor:21451 txpower:182 rssi:-83
Beacon: address:F7:43:86:4E:B9:CD uuid:b9407f30-f5f8-466e-aff9-25556b57fe6d major:52665 minor:20102 txpower:182 rssi:-68
Beacon: address:D8:B1:B7:D4:38:AE uuid:b9407f30-f5f8-466e-aff9-25556b57fe6d major:44600 minor:54455 txpower:182 rssi:-79

Installation Log: https://github.com/lupyuen/AWSIOT/blob/master/install_pybluez.log

Create NOOBS image from SD card

0. Copy setgroup.sh from https://github.com/lupyuen/RaspberryPiImage/blob/master/boot/setgroup.sh to /boot. This script is used after cloning to set the hostname.

1. Confirm WiFi config

   sudo vi /etc/wpa_supplicant/wpa_supplicant.conf
   

2. Create a large FAT32 LBA partition to store the NOOBS image. Derived from https://mike632t.wordpress.com/2014/02/10/resizing-partitions/

sudo fdisk -lu Device Boot Start End Sectors Size Id Type /dev/mmcblk0p1 8192 131071 122880 60M c W95 FAT32 (LBA) /dev/mmcblk0p2 131072 7878655 7747584 3.7G 83 Linux

So the first sector of new partition should be 7878655 + 1 = 7878656

sudo fdisk /dev/mmcblk0

n for new partition p for Primary partition type First sector: 7878656 Last sector: default

p to print partitions

Device Boot Start End Sectors Size Id Type /dev/mmcblk0p1 8192 131071 122880 60M c W95 FAT32 (LBA) /dev/mmcblk0p2 131072 7878655 7747584 3.7G 83 Linux /dev/mmcblk0p3 7878656 31116287 23237632 11.1G 83 Linux

t to change partition type Partition 3

Device Boot Start End Sectors Size Id Type /dev/mmcblk0p1 8192 131071 122880 60M c W95 FAT32 (LBA) /dev/mmcblk0p2 131072 7878655 7747584 3.7G 83 Linux /dev/mmcblk0p3 7878656 31116287 23237632 11.1G c W95 FAT32 (LBA)

w to write sudo reboot

0. Format as FAT32

sudo mkfs.vfat /dev/mmcblk0p3 mkdir /tmp/noobs sudo mount /dev/mmcblk0p3 /tmp/noobs ls /tmp/noobs

0. Copy out all files according to https://github.com/raspberrypi/noobs/blob/master/README.md

sudo su mkdir /tmp/noobs sudo mount /dev/mmcblk0p3 /tmp/noobs cd /Cre tar -cpf /tmp/noobs/root.tar /* --exclude=proc/* --exclude=sys/* --exclude=dev/pts/* --exclude=tmp/noobs/* cd /boot tar -cpf /tmp/noobs/boot.tar . shutdown now

0. Compress on a PC or Mac for better performance. Insert the SD card into a powerful PC and run

xz -9 -e root.tar xz -9 -e boot.tar

0. On the PC, download and unzip full version of NOOBS to c:\TP-IoT-NOOBS

0. Edit the recovery.cmdline file in the root NOOBS directory and append silentinstall to the arguments list.

0. Delete the folder C:\TP-IoT-NOOBS\os\Rasbian.  Create folder C:\TP-IoT-NOOBS\os\TP-IoT.

0. Copy the following files from https://github.com/lupyuen/TP-IoT-NOOBS/tree/master/os/TP-IoT to C:\TP-IoT-NOOBS\os\TP-IoT\

os.json partition_setup.sh partitions.json

0. Copy root.tar.xz, boot.tar.xz to C:\TP-IoT-NOOBS\os\TP-IoT\

0. To install a new SD Card, copy the entire contents of C:\TP-IoT-NOOBS to the SD Card and boot the Pi with the SD Card.  See https://goo.gl/Vrce5E

# Creating NOOBS image with Ubuntu VM

cd /media/user/402bfe3d-37db-48a7-a515-31edccf953df sudo mkdir /media/sf_Downloads/161027 sudo tar -cpf /media/sf_Downloads/161027/root.tar . --exclude=proc/* --exclude=sys/* --exclude=dev/pts/* --exclude=tmp/noobs/*

##cd /boot ##tar -cpf /tmp/noobs/boot.tar .

# Using a Console Cable

The Console Cable is recommended for connecting your Pi directly to your laptop's USB port so that you can troubleshoot boot issues without a HDMI display.

0. Get the Raspberry Pi console cable: https://learn.adafruit.com/adafruits-raspberry-pi-lesson-5-using-a-console-cable?view=all

0. Connect as follows: 
   
   | Edge with SDCard | Empty | Empty | Black | White | Green |
   | --- | --- | --- | --- | --- | --- |
   | |  |  |  (Gnd) |  (Tx) |  (Rx) |


   Do not connect Red cable because we are using external power

0. Install the console cable driver from http://www.prolific.com.tw/US/ShowProduct.aspx?p_id=229&pcid=41

0. On Pi 3: We must disable Bluetooth else the console cable won't work: https://www.abelectronics.co.uk/kb/article/1035/raspberry-pi-3-serial-port-usage

sudo nano /boot/config.txt

Add at the end of the file

dtoverlay=pi3-miniuart-bt

Exit the editor saving your changes and then:

sudo reboot

Enabling the Serial Console Rasbian Jessie after 18th March 2016 release:
To enable the serial console, you need to edit the /boot/cmdline.txt file

sudo nano /boot/cmdline.txt

Change the file to the following:

dwc_otg.lpm_enable=0 console=tty1 console=serial0,115200 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait

## Install Custom Domain for API Gateway

Assume that you want to set `api.mydomain.com` as your API Gateway.  We refer to `api.mydomain.com` as `<<API_DOMAIN_NAME>>`.  Setting up a Custom Domain requires an SSL cert.  Let's get the cert from LetsEncrypt.

0. Create an EC2 server running Ubuntu with public incoming HTTP port access. Denote the server IP address by `<<SERVER_IP>>`

0. Update the DNS so that `<<API_DOMAIN_NAME>>` points to the new server: Go to Route 53 --> Hosted Zones --> Domain Name --> Create Record Set.  Set Name to `<<API_DOMAIN_NAME>>`, Type to "A", Alias to "No", Value to `<<SERVER_IP>>`

0. Connect to server, install `certbot` from https://letsencrypt.org/getting-started/ and run `certbot`. 

ssh -i <<SERVER_KEY>> ubuntu@<<SERVER_IP>> <<...Install certbot first...>> sudo certbot certonly

0. Select "Automatically use a temporary web server". Make sure that ports 80 and 443 are open for incoming access.  Check the EC2 firewall / security group.

0. Enter domain name as `<<API_DOMAIN_NAME>>`

0. The new cert is created at `/etc/letsencrypt/live/<<API_DOMAIN_NAME>>`

0. Go to API Gateway console --> Custom Domain Names --> Create, enter `<<API_DOMAIN_NAME>>`, get the CloudFront domain name. Change the Route 53 record for `<<API_DOMAIN_NAME>>` to be an alias for the CloudFront domain name.

0. Copy the `cert.pem` file contents into Certificate Body

0. Copy the `privkey.pem` file contents into Certificate Private Key

0. Copy the `chain.pem` file contents into Certificate Chain

0. LetsEncrypt certs expire every 3 months, so you need to repeat the above process every 3 months. You can load the new cert as a Backup Cert into API Gateway, then rotate the cert

## For Future Consideration: Install Guacamole VNC web client

From https://sourceforge.net/p/guacamole/discussion/1110834/thread/75fd04f0/

apt-get install guacamole-tomcat apt-get install libguac-client-ssh0

## Set up AWS IoT

0. Go to AWS IoT Console, create a Thing, Name=g88pi.

0. Add an attribute "temperature" and set the value to 28 (number, not string).

0. Under the newly-created Thing, click "Connect a Device".  Download the *.private.pem.key and *.certificate.pem.crt files, copy to the root folder of the project.

0. Create a rule named "g88_too_hot".  Use this query: SELECT * FROM '$aws/things/+/shadow/update/accepted' WHERE state.reported.temperature > 25

0. Select "SNS" as the action. Create a new topic and subscribe to it.

0. Run this script. It should trigger an SNS email alert.

## For Future Consideration: Set up LoRa libraries

Based on https://www.cooking-hacks.com/documentation/tutorials/extreme-range-lora-sx1272-module-shield-arduino-raspberry-pi-intel-galileo/

cd /home/pi wget http://www.cooking-hacks.com/media/cooking/images/documentation/raspberry_arduino_shield/raspberrypi2.zip && unzip raspberrypi2.zip && cd cooking/arduPi && chmod +x install_arduPi && ./install_arduPi && rm install_arduPi && cd ../..

cd /home/pi wget http://www.cooking-hacks.com/media/cooking/images/documentation/tutorial_SX1272/arduPi-api_LoRa_v1_4.zip && unzip -u arduPi-api_LoRa_v1_4.zip && cd cooking/examples/LoRa && chmod +x cook.sh && cd ../../..

Build arduPiLoRa:

cd /home/pi/cooking/examples/LoRa/ rm -f /home/pi/cooking/libraries/arduPiLoRa/arduPiLoRa.o ./cook.sh

Previously: ./cook.sh lora_interface.cpp

cd /home/pi/LoRa

g++ -lrt -lpthread -lstdc++ lora_interface.cpp /usr/local/lib/libmsgpackc.a /home/pi/cooking/libraries/arduPiLoRa/arduPiLoRa.o /home/pi/cooking/arduPi-api/arduPiUART.o /home/pi/cooking/arduPi-api/arduPiUtils.o /home/pi/cooking/arduPi-api/arduPiMultiprotocol.o /home/pi/cooking/arduPi/arduPi.o -I/home/pi/cooking/arduPi -I/home/pi/cooking/arduPi-api -I/home/pi/cooking/libraries/arduPiLoRa -o lora_interface.cpp_exe

sudo ./lora_interface.cpp_exe

Build Python3 interface for lora_interface using swig.  Based on http://www.swig.org/tutorial.html:

sudo apt install swig

cd /home/pi/LoRa swig -python lora_interface.i

g++ -c lora_interface.cpp lora_interface_wrap.c -I/home/pi/cooking/arduPi -I/home/pi/cooking/arduPi-api -I/home/pi/cooking/libraries/arduPiLoRa -I /usr/include/python3.4

ld -shared -lrt -lpthread -lstdc++ -L /usr/lib/gcc/arm-linux-gnueabihf/4.9 lora_interface.o lora_interface_wrap.o /home/pi/cooking/libraries/arduPiLoRa/arduPiLoRa.o /home/pi/cooking/arduPi-api/arduPiUART.o /home/pi/cooking/arduPi-api/arduPiUtils.o /home/pi/cooking/arduPi-api/arduPiMultiprotocol.o /home/pi/cooking/arduPi/arduPi.o /usr/local/lib/libmsgpackc.a -o _lora_interface.so

sudo python3 test_lora_interface.py

## Auto start the LoRa gateway and nodes

For gateway:

crontab -e

Start LoRa node at startup.

@reboot /home/pi/LoRa/run_lora_gateway.sh

For node:

crontab -e

Start LoRa node at startup.

@reboot /home/pi/LoRa/run_lora_node.sh

## Setup Dragino LoRa GPS HAT

sudo apt install wiringpi