stm32蜂鸣器播放孤勇者

好的，你需要连接一个蜂鸣器到STM32的GPIO引脚上。然后，你可以使用STM32的定时器来控制蜂鸣器的频率和节奏，从而播放出孤勇者这首歌曲。

以下是一个简单的示例代码，你可以根据自己的需求进行修改和调整：

#include "stm32f10x.h"

const uint16_t notes[] = {262, 294, 330, 349, 392, 440, 494, 523, 0};
const uint16_t duration[] = {4, 4, 4, 4, 4, 4, 4, 4, 4};

void delay_ms(uint32_t ms)
{
    for (volatile uint32_t i = 0; i < ms * 8000; i++);
}

int main()
{
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);

    GPIO_InitTypeDef GPIO_InitStructure;
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
    TIM_TimeBaseStructure.TIM_Period = 65535;
    TIM_TimeBaseStructure.TIM_Prescaler = 72 - 1;
    TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);

    TIM_OCInitTypeDef TIM_OCInitStructure;
    TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
    TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
    TIM_OCInitStructure.TIM_Pulse = 0;
    TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
    TIM_OC1Init(TIM3, &TIM_OCInitStructure);

    TIM_Cmd(TIM3, ENABLE);

    while (1) {
        for (int i = 0; i < 9; i++) {
            uint16_t note = notes[i];
            uint16_t dur = duration[i];
            if (note == 0) {
                delay_ms(dur * 100);
            } else {
                TIM_SetAutoreload(TIM3, 72000000 / note);
                TIM_SetCompare1(TIM3, 72000000 / note / 2);
                delay_ms(dur * 100);
            }
            TIM_SetCompare1(TIM3, 0);
            delay_ms(50);
        }
    }
}

这段代码使用了TIM3定时器和PA6引脚来控制蜂鸣器的频率和节奏。它播放了孤勇者的主旋律。你可以根据自己的需求进行修改和调整。