声控传感器在stm32上代码

下面是一个基于STM32的声控传感器代码示例，仅供参考：

#include "stm32f10x.h"
#include "usart.h"
#include "delay.h"
#include "stdio.h"

#define MIC_PORT	GPIOA
#define MIC_PIN		GPIO_Pin_0

uint16_t adc_value = 0;

void ADC_Config(void)
{
    ADC_InitTypeDef ADC_InitStructure;
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOA, ENABLE);
    GPIO_InitStructure.GPIO_Pin = MIC_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    GPIO_Init(MIC_PORT, &GPIO_InitStructure);

    ADC_DeInit(ADC1);
    ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
    ADC_InitStructure.ADC_ScanConvMode = DISABLE;
    ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
    ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
    ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
    ADC_InitStructure.ADC_NbrOfChannel = 1;
    ADC_Init(ADC1, &ADC_InitStructure);
    ADC_Cmd(ADC1, ENABLE);
    ADC_ResetCalibration(ADC1);
    while(ADC_GetResetCalibrationStatus(ADC1));
    ADC_StartCalibration(ADC1);
    while(ADC_GetCalibrationStatus(ADC1));
}

u16 Get_Adc(u8 ch)
{
    ADC_RegularChannelConfig(ADC1, ch, 1, ADC_SampleTime_55Cycles5);
    ADC_SoftwareStartConvCmd(ADC1, ENABLE);
    while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC));
    return ADC_GetConversionValue(ADC1);
}

int main(void)
{
    u16 adc_temp = 0;
    u16 adc_max = 0;
    u16 adc_min = 4095;
    u16 adc_threshold = 0;

    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
    delay_init(72);
    USART_Config();
    ADC_Config();

    printf("STM32 Mic Test...\r\n");

    while(1)
    {
        adc_temp = Get_Adc(ADC_Channel_0);
        if(adc_temp > adc_max) adc_max = adc_temp;
        if(adc_temp < adc_min) adc_min = adc_temp;
        adc_threshold = (adc_max + adc_min) / 2;
        adc_value = adc_temp;

        if(adc_value > adc_threshold + 50)
        {
            printf("Sound detected! ADC Value: %d\r\n", adc_value);
        }

        delay_ms(10);
    }
}

这段代码使用了STM32的ADC模块来采集麦克风的声音信号，并进行处理。当声音信号超过一定阈值时，会通过串口输出提示信息。需要注意的是，声音信号的阈值需要在实际应用中进行调整。