Pulse Width Modulation (PWM) is a technique for generating a continuous HIGH/LOW alternating digital signal and programmatically controlling its pulse width and frequency. Certain loads like (LEDs, Motors, etc) will respond to the average voltage of the signal which gets higher as the PWM signal’s pulse width is increased. This technique is widely used in embedded systems to control LED brightness, motor speed, and other applications.

The Main 3 Parameters of a PWM Signal are:

1. PWM Frequency
2. PWM Duty Cycle
3. PWM Resolution

In this tutorial, we’ll dig deeper into the PWM frequency and resolution to learn more about controlling each parameter and what is the relationship between the two quantities.

STM32 PWM Frequency