December 2015
Beginner to intermediate
650 pages
18h 28m
English
book
Embedded Computing and Mechatronics with the PIC32 Microcontroller
by Kevin Lynch, Nicholas Marchuk, Matthew Elwin
Content preview from Embedded Computing and Mechatronics with the PIC32 Microcontroller
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Chapter 9
Output Compare
Abstract
This chapter describes the PIC32’s output compare peripheral, which is used to generate pulse-width modulation (PWM) pulse trains. A PWM pulse train, when used with an H-bridge, can control the speed and direction of a motor. A PWM signal can also be used to control the brightness of an LED or low-pass filtered to generate an analog output. The special function registers controlling the output compare peripheral are explained and sample code is given.
Keywords
Output compare
Pulse-width modulation (PWM)
Analog output
Duty cycle
RC filter
Low-pass filter
The output compare (OC) peripheral sets the state of an output pin based on the value of a timer. Output compare can be used to generate a single pulse of ...
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