stm32spi采集adc

好的，我可以为您提供一些参考信息。下面是一个简单的示例代码，演示如何使用STM32的SPI接口来采集ADC数据：

#include "stm32f10x.h"

void SPI_Configuration(void)
{
    SPI_InitTypeDef SPI_InitStruct;

    /* Enable the SPI clock */
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);

    /* Configure the SPI pins */
    GPIO_InitTypeDef GPIO_InitStruct;
    GPIO_InitStruct.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;
    GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStruct);

    /* Configure the SPI */
    SPI_InitStruct.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
    SPI_InitStruct.SPI_Mode = SPI_Mode_Master;
    SPI_InitStruct.SPI_DataSize = SPI_DataSize_8b;
    SPI_InitStruct.SPI_CPOL = SPI_CPOL_Low;
    SPI_InitStruct.SPI_CPHA = SPI_CPHA_1Edge;
    SPI_InitStruct.SPI_NSS = SPI_NSS_Soft;
    SPI_InitStruct.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;
    SPI_InitStruct.SPI_FirstBit = SPI_FirstBit_MSB;
    SPI_InitStruct.SPI_CRCPolynomial = 7;
    SPI_Init(SPI1, &SPI_InitStruct);

    /* Enable the SPI */
    SPI_Cmd(SPI1, ENABLE);
}

void ADC_Configuration(void)
{
    ADC_InitTypeDef ADC_InitStruct;

    /* Enable the ADC1 clock */
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);

    /* Configure the ADC */
    ADC_StructInit(&ADC_InitStruct);
    ADC_InitStruct.ADC_ContinuousConvMode = ENABLE;
    ADC_InitStruct.ADC_DataAlign = ADC_DataAlign_Right;
    ADC_InitStruct.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
    ADC_InitStruct.ADC_Mode = ADC_Mode_Independent;
    ADC_InitStruct.ADC_NbrOfChannel = 1;
    ADC_InitStruct.ADC_ScanConvMode = DISABLE;
    ADC_Init(ADC1, &ADC_InitStruct);

    /* Enable the ADC */
    ADC_Cmd(ADC1, ENABLE);

    /* Calibrate the ADC */
    ADC_ResetCalibration(ADC1);
    while (ADC_GetResetCalibrationStatus(ADC1));
    ADC_StartCalibration(ADC1);
    while (ADC_GetCalibrationStatus(ADC1));
}

uint16_t Read_ADC(void)
{
    uint16_t adc_value = 0;

    /* Start the ADC conversion */
    ADC_SoftwareStartConvCmd(ADC1, ENABLE);

    /* Wait for the conversion to complete */
    while (!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC));

    /* Read the converted value */
    adc_value = ADC_GetConversionValue(ADC1);

    return adc_value;
}

void SPI_Send(uint8_t data)
{
    /* Wait for the transmit buffer to be empty */
    while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);

    /* Send the data */
    SPI_I2S_SendData(SPI1, data);

    /* Wait for the receive buffer to be full */
    while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);

    /* Read the received data */
    SPI_I2S_ReceiveData(SPI1);
}

int main(void)
{
    /* Initialize the SPI and ADC */
    SPI_Configuration();
    ADC_Configuration();

    while (1)
    {
        /* Read the ADC value */
        uint16_t adc_value = Read_ADC();

        /* Send the ADC value over SPI */
        SPI_Send((adc_value >> 8) & 0xFF);
        SPI_Send(adc_value & 0xFF);
    }
}

在这个示例代码中，我们使用了STM32的SPI1接口和ADC1模块。首先，我们需要配置SPI口和ADC口的初始化参数。然后，我们可以使用`Read_ADC()`函数来读取ADC的值，并将其发送到SPI接口上。最后，我们可以使用`SPI_Send()`函数来将数据发送到SPI接口上。

希望这个示例代码能够帮助到您！