Pulse Width Modulation (PWM) via Software

in programming •  6 years ago 

Pulse-width modulation is a technique that allows a microcontroller to control the speed of motors, brightness of LEDs, or average voltage without needing a DAC. If you don't have a microcontroller with on-board PWM hardware, or have run out of PWM channels, how can PWM be simulated using software?

The flow diagram
PWM.png

The C code

F.jpg

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