Introduction

New goal on pi4 without kotlin and django, and with only one dataserver.

Installation

Get Raspbrain into SD card

Download Raspbian Buster Lite

https://www.raspberrypi.org/downloads/raspberry-pi-os/

Copy raspbian.img into SD card

# check disk
lsblk

# copy data to sd card
sudo dd bs=4M if=yyyy-mm-dd-raspbian-buster.img of=/dev/sdX conv=fsync status=progress

# enable ssh on first boot
add ssh.txt in boot folder

Setup pi3 environment

raspi-config setting

* means neccessary
△ means under some circumstances not need to change the options

* Change Password

* Change Locale
    - sudo nano /etc/locale.gen
        * uncomment # en_US.UTF-8 UTF-8 -> en_US.UTF-8 UTF-8
    - sudo raspi-config
        * Localisation Options
        * Change Locale
        * en_US.UTF-8 UTF-8
        * en_US.UTF-8 UTF-8 (Configuring locales)

* Change TimeZone
    - Localisation Options
        * Change Timezone
        * Asia
        * Taipei

△ Change Keyboard Layout
    - Localisation Options
        * Change Keyboard Layout
        * Generic 105-key PC (intl.) (default)
        * Other (escape UK menu)
        * English (US)
        * The default for the keyboard layout
        * No compose key

* Change Wifi Country
    - Localisation Options
        * Change WLAN Country
        * TW Taiwan

△ Wifi setting
    - Network Options
        * Wireless LAN
        * SSID (wifi-name)
        * password (wifi-pass)

△ Enable SSH service
    - Interfacing Options
        * SSH
        * Yes

* Reboot
    sudo reboot

* System update
    sudo apt-get update
    sudo apt-get upgrade

Install dependencies

sudo apt-get install vim git wiringpi build-essential libi2c-dev i2c-tools python-dev libffi-dev python3-pip postgresql

Setup project

Clone project

cd ~
git clone https://gitlab.com/bioproscientific/bioprorelife.git

Install python dependencies

cd ~/bioprorelife
pip3 install -r requirements.txt

Packages version

fake-rpi                      0.6.3
gprof2dot                     2019.11.30
matplotlib                    3.2.1
objgraph                      3.4.1
paho-mqtt                     1.5.0
pycrypto                      2.6.1
PyInstaller                   3.6
pyserial                      3.4
RPi.GPIO                      0.7.0
smbus-cffi                    0.5.1
Sphinx                        2.4.4
sphinx-autodoc-typehints      1.10.3
spidev                        3.2
yappi                         1.2.3
psycopg2                      2.8.5

Build C extension

cd ~/bioprorelife/python/biopro/ext/
rm -rf *.so build
python3 setup.py build_ext --inplace

Check setup-uart file

cd ~/bioprorelife
sudo vim ./run-setup-uart.sh

Modify the code as following

# for pi3
if [ -z "$(grep dtoverlay=pi3-disable-bt /boot/config.txt)" ]; then
   echo 'dtoverlay=pi3-disable-bt' >> /boot/config.txt
fi

# for pi4
if [ -z "$(grep dtoverlay=pi4-disable-bt /boot/config.txt)" ]; then
   echo 'dtoverlay=pi4-disable-bt' >> /boot/config.txt
fi

Enable uart, spi, serial_port and disable bluetooth

sudo ./run-setup-uart.sh

sudo raspi-config
    Interfacing options
    serial
    no
    yes
reboot

Auto run program when device start

sudo vim /etc/rc.local

add the code following as:

sudo -H -u pi nohup /home/pi/bioprorelife/run-data-server.sh > /home/pi/.data_server.out &

MQTT broker install

1. Install mosquitto

sudo apt-get install mosquitto mosquitto-clients

2. Enable Remote Access

sudo vim /etc/mosquitto/conf.d/default.conf

add the code following as:

listener 1883
protocol mqtt
listener 8083
protocol websockets

restart mqtt broker

sudo systemctl restart mosquitto

3. Robust MQTT create mosquitto_restart.sh

cd ~
sudo vim mosquitto_restart.sh

add the code following as:

if [ "`ps -aux | grep /usr/sbin/mosquitto | wc -l`" == "1" ]

then
        echo "mosquitto wasnt running so attempting restart" >> /home/ubuntu/cron.log
        systemctl restart mosquitto
        exit 0
fi

echo "$SERVICE is currently running" >> /home/ubuntu/cron.log
exit 0

add mosquitto_restart.sh to root routing

sudo chmod +x mosquitto_restart.sh
sudo  -i
crontab -e

add the code following as:

*/5 * * * * /home/pi/mosquitto_restart.sh

3. Auto run MQTT broker when when pi-start

sudo vim /etc/rc.local

add the code following as:

sudo nohup systemctl restart mosquitto

Setup routed wireless access point

raspberry website document:

https://www.raspberrypi.org/documentation/configuration/wireless/access-point-routed.md