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Raspberry Pi 3 Cookbook for Python Programmers - Third Edition
book

Raspberry Pi 3 Cookbook for Python Programmers - Third Edition

by Steven Lawrence Fernandes, Tim Cox
April 2018
Beginner content levelBeginner
552 pages
13h 58m
English
Packt Publishing
Content preview from Raspberry Pi 3 Cookbook for Python Programmers - Third Edition

How it works...

The first script, serialControl.py, provides us with a serPort class. We define the class with the following functions:

  • __init__(self,serName="/dev/ttyAMA0"): This function will create a new serial device using serName – the default of /dev/ttyAMA0 is the ID for the GPIO serial pins (see the There's more... section). After it is initialized, information about the device is displayed.
  • __enter__(self): This is a dummy function that allows us to use the with...as method.
  • send(self,message): This is used to check that the serial port is open and not in use; if this is the case, it will then send a message (after converting it to raw bytes using the s2b() function).
  • receive(self, chars=1, echo=True, terminate="r"): After checking ...
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Publisher Resources

ISBN: 9781788629874Supplemental Content