Change the world

Control Software

Download: Examples - PWM.zip

The following example programs are available to demonstrate the basic principles of using a PWM module:

ex1_PWM_ramp_up.c

Example program that demonstrates the use of a PWM output.  The output will be cycled from 0%, 25%, 50%, 75% and 100% every 5 seconds. If and LED or DC motor driver are connected to the pin, you will see the LED go from dim to bright and the DC motor turn slow to fast.

* An LED or DC motor driver connected to PB6
* Connect PB6 to an oscilloscope to see the effect of an PWM output graphically.

 

ex2_PWM_multiple.c

Example program that demonstrates the use of multiple PWM outputs.  Each PWM output will individually be ramped up from 0 to 100%.  The signals will be 25% out of phase for demonstration purposes.

* LEDs connected to:
PB6    (TIM4_CH1)
PD13   (TIM4_CH2)
PD14   (TIM4_CH3)
                    
* Connect the PWM outputs to an oscilloscope to see the effects graphically.