Buzzer-STM32-HAL

Simple library to generate pulses with predefined time and period, that can be used for control piezoelectronic buzzer with oscillator circuit – active, or without – passive. It useful for debug purposes or notifications in your device.

Cloning with submodules

As you can see this repository use buzzer libary as submodule, so to get all files (including submodule), use following command:

git clone --recurse-submodules https://github.com/Egoruch/Buzzer-STM32-HAL.git

Connection circuit

How to use?

1. Add buzzer.c to Src and buzzer.h to Inc.
2. Configure required pin as GPIO_Output (left click) and set label (right click): BUZZER.
3. Include buzzer.h in main.c:

 /* USER CODE BEGIN Includes */
#include "buzzer.h"
/* USER CODE END Includes */

4. Open stm32f4xx_it.c and modify SysTick_Handler():

/**
  * @brief This function handles System tick timer.
  */
void SysTick_Handler(void)
{
  /* USER CODE BEGIN SysTick_IRQn 0 */
  HAL_SYSTICK_Callback();
  /* USER CODE END SysTick_IRQn 0 */
  HAL_IncTick();
  /* USER CODE BEGIN SysTick_IRQn 1 */
  /* USER CODE END SysTick_IRQn 1 */
}

6. Write callback function to execute BUZZER_Handler() every 1 ms:

/* USER CODE BEGIN 4 */
/*** SYSTICK (T = 1ms) ***/
/**
  * @brief  SYSTICK callback.
  * @retval None
  */
void HAL_SYSTICK_Callback(void)
{
	BUZZER_Handler();
}
/* USER CODE END 4 */

7. That's all, now you can test buzzing by Buzzer_Go!

  /* USER CODE BEGIN 2 */
  Buzzer_Go(TBUZ_100, TICK_2);
  HAL_Delay(2000);
  /* USER CODE END 2 */
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
	  Buzzer_Go(TBUZ_50, TICK_4);
	  HAL_Delay(2000);
    /* USER CODE END WHILE */

Working demonstrating

# TODO - [x] Polarity choose - [ ] Initialize function with pin choose (based on Cube's label)