Passive Buzzer 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 20

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=10; x<30; x=x+1)
    {
      __HAL_TIM_SET_AUTORELOAD(&htim2, x*2);
      __HAL_TIM_SET_COMPARE(&htim2,TIM_CHANNEL_2, x);
      HAL_Delay(100);
    }
    /* USER CODE END WHILE */