A quick and easy introduction to how to use the RevPi with the Python programming language.

Why Python?

• Python is simple and straightforward

• IEEE study # 1 programming language 2018 worldwide

• Documentation

  • https://docs.python.org/3/

• Start interactive Python shell

  python3

• My recommendation uses the IPython interactive shell as it supports tabbed auto completition

  sudo apt install ipython3 ipython3

LED switch with Python

• Works like writing a "1" to the location in the process image where the RevPiLED is located

• Where is the RevPiLED located in the process image?

• Run the following command

• At offset 119

Read or write strings

The devices in PiCtory usually provide byte access to the data. You can test this example by using a Virtual Device 32 Bytes in PiCtory.

Open

Python example code

Verify the contents of the process image with piTest

RevPiModIO

• Library developed from the RevPi community

• Allows easy use of symbolic names from PiCtory

• Installation not necessary, already on the device

• Documentation

  • https://revpimodio.org/

Switch the LED with RevPiModIO

 Python I/O Bit Mirror

Video Tutorials

Also, take a look at our video tutorials about Python

• Tutorial 10 – Python headless

• Tutorial 11 – Python on the graphical user environment

Besides, take a look at the following video tutorials

• Tutorial 04 – Headless

• Tutorial 09 – PiCtory

• Tutorial 12 – Digital IO Modules application example

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