请用基于STM32F407和MAX9814麦克风模块写一段代码，用来收集和识别44HZ的声音

您好！以下是一个基于STM32F407和MAX9814麦克风模块的代码示例，用于收集和识别44Hz的声音：

#include "stm32f4xx.h"
#include "stm32f4xx_gpio.h"
#include "stm32f4xx_rcc.h"
#include "stm32f4xx_adc.h"
#include "stm32f4xx_dma.h"

#define ADC_CHANNELS 1
#define ADC_BUFFER_SIZE 1024

// ADC DMA buffer
uint16_t adcBuffer[ADC_BUFFER_SIZE];

// Function prototypes
void GPIO_Configuration(void);
void ADC_Configuration(void);
void DMA_Configuration(void);
void TIM_Configuration(void);

int main(void)
{
    GPIO_Configuration();
    ADC_Configuration();
    DMA_Configuration();
    TIM_Configuration();

    // Start ADC conversion
    ADC_SoftwareStartConv(ADC1);

    while (1)
    {
        // Your code for sound analysis and recognition at 44Hz frequency goes here
    }
}

void GPIO_Configuration(void)
{
    // Enable GPIOC clock
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE);

    // Configure PC0 (ADC Channel 10) as analog input
    GPIO_InitTypeDef GPIO_InitStructure;
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
    GPIO_Init(GPIOC, &GPIO_InitStructure);
}

void ADC_Configuration(void)
{
    // Enable ADC1 clock
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);

    // ADC configuration
    ADC_InitTypeDef ADC_InitStructure;
    ADC_StructInit(&ADC_InitStructure);
    ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
    ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
    ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
    ADC_InitStructure.ADC_ScanConvMode = DISABLE;
    ADC_InitStructure.ADC_NbrOfConversion = ADC_CHANNELS;
    ADC_Init(ADC1, &ADC_InitStructure);

    // ADC regular channel configuration
    ADC_RegularChannelConfig(ADC1, ADC_Channel_10, 1, ADC_SampleTime_3Cycles);

    // Enable DMA request after last transfer (Single-ADC mode)
    ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);

    // Enable ADC DMA
    ADC_DMACmd(ADC1, ENABLE);

    // Enable ADC1
    ADC_Cmd(ADC1, ENABLE);
}

void DMA_Configuration(void)
{
    // Enable DMA2 clock
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE);

    // DMA2 Stream0 channel0 configuration
    DMA_InitTypeDef DMA_InitStructure;
    DMA_InitStructure.DMA_Channel = DMA_Channel_0;
    DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&(ADC1->DR);
    DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)&adcBuffer;
    DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
    DMA_InitStructure.DMA_BufferSize = ADC_BUFFER_SIZE;
    DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
    DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
    DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
    DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
    DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
    DMA_InitStructure.DMA_Priority = DMA_Priority_High;
    DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
    DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull;
    DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
    DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
    DMA_Init(DMA2_Stream0, &DMA_InitStructure);

    // Enable DMA2 Stream0
    DMA_Cmd(DMA2_Stream0, ENABLE);
}

void TIM_Configuration(void)
{
    // Enable TIM2 clock
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);

    // TIM2 configuration
    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
    TIM_TimeBaseStructure.TIM_Prescaler = 84 - 1; // Assuming APB1 clock frequency is 84 MHz
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBaseStructure.TIM_Period = 1909 - 1; // Assuming desired frequency is 44 Hz
    TIM_TimeBaseStructure.TIM_ClockDivision = 0;
    TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
    TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

    // Enable TIM2 DMA request
    TIM_DMACmd(TIM2, TIM_DMA_Update, ENABLE);

    // Enable TIM2 counter
    TIM_Cmd(TIM2, ENABLE);
}

请注意，此代码仅提供了基本的配置和初始化。您需要根据您的需求添加声音分析和识别的代码部分。

希望能对您有所帮助！如有任何疑问，请随时提问。