等效采样代码stm32

在STM32上进行等效采样的代码示例如下：

#include "stm32f4xx.h"

#define ADC_BUFFER_SIZE 1024

uint16_t_buffer[ADC_BUFFER_SIZE];

void ADC_Configuration(void)
{
    ADC_InitTypeDef ADC_InitStructure;
    GPIO_InitTypeDef GPIO_InitStructure;
    DMA_InitTypeDef DMA_InitStructure;

    // 使能ADC时钟
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
    // 使能GPIOB时钟
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);
    // 使能DMA2时钟
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE);

    // 配置PB0引脚为模拟输入
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
    GPIO_Init(GPIOB, &GPIO_InitStructure);

    // 配置DMA 接收ADC数据
    DMA_InitStructure.DMA_Channel = DMA_Channel_0;
    DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&ADC1->DR;
    DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)&adc_buffer;
    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);

    // 启动DMA传输
    DMA_Cmd(DMA2_Stream0, ENABLE);

    // 配置ADC参数
    ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
    ADC_InitStructure.ADC_ScanConvMode = DISABLE;
    ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
    ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
    ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;
    ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
    ADC_InitStructure.ADC_NbrOfConversion = 1;
    ADC_Init(ADC1, &ADC_InitStructure);

    // 配置ADC通道
    ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 1, ADC_SampleTime_15Cycles);

    // 使能DMA请求
    ADC_DMACmd(ADC1, ENABLE);

    // 使能ADC
    ADC_Cmd(ADC1, ENABLE);

    // 启动ADC转换
    ADC_SoftwareStartConv(ADC1);
}

int main(void)
{
    // 初始化ADC
    ADC_Configuration();

    while (1)
    {
        // 在这里处理采样数据
        // adc_buffer 数组中存储了采样数据
    }
}

这是一个简单的代码示例，用于在STM32上进行等效采样。代码中配置了ADC、DMA和GPIO，并且启动了ADC转换和DMA传输。在主循环中，您可以处理采样数据，采样数据存储在`adc_buffer`数组中。请根据您的具体需求进行修改和扩展。