STM32 PWM (2) Example

The STM32 PWM_2 example program shows how to configure and use the timer TIM4 of STMicroelectronics STM32F103xx microcontroller to generate pulse-width modulation.

TIM4 is configured to generate an update interrupt every 100 ms. On every update interrupt the duty cycles of channel 3 and channel 4 are changed. The result is that the LEDs PB8 and PB9 are pulsating.

The configuration of the clocks and the timer TIM4 is done using the Configuration Wizard in file STM32_Init.c.

Two µVision targets are available:

• Simulator where the program runs in the software simulator.

• MCBSTM32 where the program runs from internal Flash located on the microcontroller.

The example is tested with the Keil Evaluation Board MCBSTM32.