LED Fade PWM Timer with Blue Pill using STM32CubeIDE

Prerequisites

This project assumes you have already installed STM32CubeIDE. You need to have previously done a basic blink sketch with blue-pill using STM32CubeIDE. I have made a complete video from installing STM32CubeIDE to LED blink program. You can watch it by clicking this link. https://www.youtube.com/watch?v=kXg467nVd_A

Wiring Diagram

STM32CubeIDE Settings

Click Timer → Click TIM2 →

Clock Source set to Internal Clock

Channel2 set to PWM Generation CH2

Configuration → Parameter Settings →

Prescaler set to 127

Counter Period 625

Additional code on top of STM32CubeIDE generated code

  /* USER CODE BEGIN 2 */
  HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_2);
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
	int x;
	for(x=0; x<625; x=x+1)
	{
	  __HAL_TIM_SET_COMPARE(&htim2,TIM_CHANNEL_2, x);
	  HAL_Delay(3);
	}
	for(x=625; x>0; x=x-1)
	{
	  __HAL_TIM_SET_COMPARE(&htim2,TIM_CHANNEL_2, x);
	  HAL_Delay(3);
	}
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */