Hello Orange Pi Zero

This is a simple Flask example on a Orange Pi Zero board. Flask is a Python-based web framework that offers full control. For controlling GPIO we use orangepi_PC_gpio_pyH3 Python library.

Install Flask

To be able to run this simple example you ned to install Flask in your Armbian:

pip install -r requirements.txt 

Application

First we need to create Flask application:

from flask import Flask 
app = Flask(__name__) 

Than we need to configure GPIO:

from pyA20.gpio import gpio 
from pyA20.gpio import port 
led = port.PA12 
gpio.init()
gpio.setcfg(led, gpio.OUTPUT) 

After that we define two handles:

@app.route('/hello') 
def hello(): 
	gpio.output(led, 1) 
	return 'Hello Orange Pi Zero!' 
@app.route('/bye') 
def bye(): 
	gpio.output(led, 0) 
	return 'Bye Bye!' 

And finally we start Flask application:

app.run(host='0.0.0.0', port=80) 

To be able to access it in you local network use host=0.0.0.0. For the application to be able to bind to 80 port and to access GPIO you need to run it as a sudoer.

sudo python run.py

Testing

To test this application we use nice Android HTTP Request Widget. It has a lot of Here is how you configure it:

As a result you have a nice and simple control panel on you Android home screen: