PiREST

I have created an extention to my network using RaspberryPi 4 and also wanted to check the status of pi so I have made this python api. It is more like a cheat sheet for me for some later uses or when i forgot something.

Sharing Wifi Through LAN

How i made my WiFi signal recived by Pi to be shared by LAN:

• Install dnsmasq

sudo apt-get install dnsmasq

• Open /etc/dhcpcd.conf

sudo nano /etc/dhcpcd.conf 

• Add two lines at the bottom and save

interface eth0
static ip_address=192.168.4.1/24

• Make a backup of orginal dnsmasq.conf

sudo mv /etc/dnsmasq.conf /etc/dnsmasq.conf.orig

• Open /etc/dnsmasq.conf

sudo nano /etc/dnsmasq.conf

• Add two lines and save

interface=eth0
dhcp-range=192.168.4.8,192.168.4.250,255.255.255.0,12h

• Open /etc/sysctl.conf

sudo nano /etc/sysctl.conf

• Uncomment or add this line inside a file

net.ipv4.ip_forward=1

• Open /etc/rc.local

sudo nano /etc/rc.local

• Add this line above just above exit 0

iptables -t nat -A  POSTROUTING -o wlan0 -j MASQUERADE

• Reboot the Pi

Rest api setup

• Creating a virtual enviroment named rest using python

python3 -m venv rest

• Activating virtual enviroment

#Pi version
source rest/bin/activate
#Windows testing version
rest\Scripts\activate

• Installing needed dependency using pip

#Installing
pip install -r requirements.txt
#Exporting fixed version
pip freeze > requirements.txt

• Exporting flash app and running it

#On Windows use set instead of export
export FLASK_APP=main.py
flask run --host=0.0.0.0