生成一段stm32多路采集adc的代码

以下是一段基于STM32的多路ADC采集代码，可根据需要进行调整：

#include "stm32f4xx.h"

#define ADC1_DR_ADDRESS ((uint32_t)0x4001204C)

ADC_HandleTypeDef adcHandle;

void ADC_Init(void) {
    ADC_ChannelConfTypeDef sConfig;

    __HAL_RCC_ADC1_CLK_ENABLE();

    adcHandle.Instance                   = ADC1;
    adcHandle.Init.ClockPrescaler        = ADC_CLOCK_SYNC_PCLK_DIV2;
    adcHandle.Init.Resolution            = ADC_RESOLUTION_12B;
    adcHandle.Init.ScanConvMode           = ENABLE;
    adcHandle.Init.ContinuousConvMode     = ENABLE;
    adcHandle.Init.DiscontinuousConvMode  = DISABLE;
    adcHandle.Init.ExternalTrigConvEdge   = ADC_EXTERNALTRIGCONVEDGE_NONE;
    adcHandle.Init.ExternalTrigConv       = ADC_SOFTWARE_START;
    adcHandle.Init.DataAlign              = ADC_DATAALIGN_RIGHT;
    adcHandle.Init.NbrOfConversion        = 3;

    HAL_ADC_Init(&adcHandle);

    sConfig.Channel      = ADC_CHANNEL_0;
    sConfig.Rank         = 1;
    sConfig.SamplingTime = ADC_SAMPLETIME_480CYCLES;

    HAL_ADC_ConfigChannel(&adcHandle, &sConfig);

    sConfig.Channel = ADC_CHANNEL_1;
    sConfig.Rank    = 2;

    HAL_ADC_ConfigChannel(&adcHandle, &sConfig);

    sConfig.Channel = ADC_CHANNEL_2;
    sConfig.Rank    = 3;

    HAL_ADC_ConfigChannel(&adcHandle, &sConfig);
}

void ADC_Start(void) {
    HAL_ADC_Start_DMA(&adcHandle, (uint32_t*)&ADC1_DR_ADDRESS, 3);
}

void DMA2_Stream0_IRQHandler(void) {
    HAL_DMA_IRQHandler(adcHandle.DMA_Handle);
}

void HAL_ADC_MspInit(ADC_HandleTypeDef* hadc) {
    GPIO_InitTypeDef GPIO_InitStruct;
    DMA_HandleTypeDef dmaHandle;

    __HAL_RCC_ADC1_CLK_ENABLE();
    __HAL_RCC_DMA2_CLK_ENABLE();
    __HAL_RCC_GPIOA_CLK_ENABLE();

    GPIO_InitStruct.Pin  = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2;
    GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
    GPIO_InitStruct.Pull = GPIO_NOPULL;

    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    dmaHandle.Instance                 = DMA2_Stream0;
    dmaHandle.Init.Channel             = DMA_CHANNEL_0;
    dmaHandle.Init.Direction           = DMA_PERIPH_TO_MEMORY;
    dmaHandle.Init.PeriphInc           = DMA_PINC_DISABLE;
    dmaHandle.Init.MemInc              = DMA_MINC_ENABLE;
    dmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
    dmaHandle.Init.MemDataAlignment    = DMA_MDATAALIGN_HALFWORD;
    dmaHandle.Init.Mode                = DMA_CIRCULAR;
    dmaHandle.Init.Priority            = DMA_PRIORITY_HIGH;
    dmaHandle.Init.FIFOMode            = DMA_FIFOMODE_DISABLE;
    dmaHandle.Init.FIFOThreshold       = DMA_FIFO_THRESHOLD_HALFFULL;
    dmaHandle.Init.MemBurst            = DMA_MBURST_SINGLE;
    dmaHandle.Init.PeriphBurst         = DMA_PBURST_SINGLE;

    HAL_DMA_Init(&dmaHandle);

    __HAL_LINKDMA(hadc, DMA_Handle, dmaHandle);

    HAL_NVIC_SetPriority(DMA2_Stream0_IRQn, 0, 0);
    HAL_NVIC_EnableIRQ(DMA2_Stream0_IRQn);
}

该代码使用了STM32的ADC1模块，可以同时采集3个通道的模拟信号。DMA2用于将ADC转换结果传输到内存中。在使用该代码时，需要确保已正确配置GPIO口的模式为模拟输入。同时，还需要在main函数中调用ADC_Init()函数进行初始化，并在需要进行采集时调用ADC_Start()函数启动转换。