May 2016
Intermediate to advanced
388 pages
9h 9m
English
Content preview from Internet of Things with PythonBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Controlling PWM with the wiring-x86 library
So far, we have been using the mraa library to work with PWM and change the brightness level for the different LEDs and colors within an RGB LED. However, in the first chapter, we also installed the wiring-x86 library. We can change just a few lines of our object-oriented code to replace the mraa library with the wiring-x86 one to change the brightness levels for the red, green and blue components.
There is an important difference between the mraa library and the wiring-x86 library when working with PWM. The former works with floating point values from 0.0f to 1.0f to set the output duty cycle percentage, but the latter works with values from 0 to 255 inclusive to set this value. Thus, when working with ...
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