python-escpos/doc/user/raspi.rst

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Raspberry Pi
============
:Last Reviewed: 2017-01-05
This instructions were tested on Raspbian Jessie.
.. warning:: You should **never** directly connect an printer with RS232-interface (serial port) directly to
a Raspberry PI or similar interface (e.g. those simple USB-sticks without encasing). Those interfaces are
based on 5V- or 3,3V-logic (the latter in the case of Raspberry PI). Classical RS232 uses 12V-logic and would
**thus destroy your interface**. Connect both systems with an appropriate *level shifter*.
Dependencies
------------
First, install the packages available on Raspbian.
::
sudo apt-get install python3 python3-setuptools python3-pip libjpeg8-dev
Installation
------------
You can install by using pip3.
::
sudo pip3 install --upgrade pip
sudo pip3 install python-escpos
Run
---
You need sudo and python3 to run your program.
::
sudo python3 your-program.py
Now you can attach your printer and and test it with the example code in the project's set of examples.
You can find that in the `project-repository <https://github.com/python-escpos/python-escpos>`__.
For more details on this check the :doc:`installation-manual <installation>`.