基于HAL库的stm32控制有源蜂鸣器播放歌曲的代码

以下是基于HAL库的stm32控制有源蜂鸣器播放歌曲的代码：

#include "main.h"
#include "stm32f1xx_hal.h"

#define BUZZER_GPIO_PORT GPIOA
#define BUZZER_GPIO_PIN GPIO_PIN_8

void play_tone(uint16_t frequency, uint16_t duration)
{
    uint32_t period = 1000000 / frequency;
    uint32_t pulse = period / 2;
    uint32_t delay_us = duration * 1000 - pulse;

    HAL_GPIO_WritePin(BUZZER_GPIO_PORT, BUZZER_GPIO_PIN, GPIO_PIN_SET);
    HAL_Delay(pulse);
    HAL_GPIO_WritePin(BUZZER_GPIO_PORT, BUZZER_GPIO_PIN, GPIO_PIN_RESET);
    HAL_Delay(delay_us);
}

void play_song(void)
{
    uint16_t notes[] = {262, 294, 330, 349, 392, 440, 494, 523};
    uint16_t durations[] = {500, 500, 500, 500, 500, 500, 500, 500};

    for (int i = 0; i < sizeof(notes) / sizeof(notes[0]); i++)
    {
        play_tone(notes[i], durations[i]);
    }
}

int main(void)
{
    HAL_Init();
    __HAL_RCC_GPIOA_CLK_ENABLE();

    GPIO_InitTypeDef GPIO_InitStruct = {0};
    GPIO_InitStruct.Pin = BUZZER_GPIO_PIN;
    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    HAL_GPIO_Init(BUZZER_GPIO_PORT, &GPIO_InitStruct);

    while (1)
    {
        play_song();
        HAL_Delay(1000);
    }
}

希望这个代码对你有所帮助！