使用Intel Serial IO SPI接口的API函数实现SPI通信代码示例

以下是使用Intel Serial IO SPI接口的API函数实现SPI通信的代码示例，仅供参考：

#include <windows.h>
#include <stdio.h>
#include <initguid.h>
#include <devguid.h>
#include <setupapi.h>
#include <serialio.h>

#define SPI_TRANSFER_SIZE 16

int main()
{
    HANDLE hSpiDevice = INVALID_HANDLE_VALUE;
    SERIAL_IO_SPI_TRANSFER SpiTransfer;
    SERIAL_IO_SPI_STATUS SpiStatus;
    DWORD dwBytesReturned;
    BYTE TxBuffer[SPI_TRANSFER_SIZE] = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10};
    BYTE RxBuffer[SPI_TRANSFER_SIZE];

    // 查找Serial IO SPI设备
    HDEVINFO hDevInfo = SetupDiGetClassDevs(&GUID_DEVCLASS_SERIALIO_SPI, NULL, NULL, DIGCF_PRESENT);
    if (hDevInfo == INVALID_HANDLE_VALUE)
    {
        printf("Failed to get Serial IO SPI device information.\n");
        return 1;
    }

    // 打开Serial IO SPI设备
    SP_DEVICE_INTERFACE_DATA DevInterfaceData;
    DevInterfaceData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
    if (!SetupDiEnumDeviceInterfaces(hDevInfo, NULL, &GUID_DEVCLASS_SERIALIO_SPI, 0, &DevInterfaceData))
    {
        printf("Failed to enumerate Serial IO SPI device interface.\n");
        SetupDiDestroyDeviceInfoList(hDevInfo);
        return 1;
    }

    // 获取Serial IO SPI设备路径
    DWORD dwRequiredSize;
    SetupDiGetDeviceInterfaceDetail(hDevInfo, &DevInterfaceData, NULL, 0, &dwRequiredSize, NULL);
    PSP_DEVICE_INTERFACE_DETAIL_DATA pDevInterfaceDetailData = (PSP_DEVICE_INTERFACE_DETAIL_DATA)malloc(dwRequiredSize);
    if (pDevInterfaceDetailData == NULL)
    {
        printf("Failed to allocate memory for Serial IO SPI device interface detail data.\n");
        SetupDiDestroyDeviceInfoList(hDevInfo);
        return 1;
    }

    pDevInterfaceDetailData->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);
    if (!SetupDiGetDeviceInterfaceDetail(hDevInfo, &DevInterfaceData, pDevInterfaceDetailData, dwRequiredSize, NULL, NULL))
    {
        printf("Failed to get Serial IO SPI device interface detail.\n");
        free(pDevInterfaceDetailData);
        SetupDiDestroyDeviceInfoList(hDevInfo);
        return 1;
    }

    hSpiDevice = CreateFile(pDevInterfaceDetailData->DevicePath, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
    if (hSpiDevice == INVALID_HANDLE_VALUE)
    {
        printf("Failed to open Serial IO SPI device.\n");
        free(pDevInterfaceDetailData);
        SetupDiDestroyDeviceInfoList(hDevInfo);
        return 1;
    }

    // 初始化Serial IO SPI设备
    SERIAL_IO_SPI_INIT SpiInit;
    SpiInit.TransferWidth = SERIAL_IO_SPI_TRANSFER_WIDTH_8BIT;
    SpiInit.ClockFrequency = 1000000;
    SpiInit.TransferMode = SERIAL_IO_SPI_TRANSFER_MODE_0;
    SpiInit.DataOrder = SERIAL_IO_SPI_DATA_ORDER_MSB_FIRST;
    SpiInit.ClockPolarity = SERIAL_IO_SPI_CLOCK_POLARITY_LOW;
    SpiInit.ClockPhase = SERIAL_IO_SPI_CLOCK_PHASE_LEADING_EDGE;
    SpiInit.ChipSelectPolarity = SERIAL_IO_SPI_CHIP_SELECT_POLARITY_ACTIVE_LOW;
    SpiInit.ChipSelect = 0;
    if (!DeviceIoControl(hSpiDevice, IOCTL_SERIAL_IO_SPI_INITIALIZE, &SpiInit, sizeof(SERIAL_IO_SPI_INIT), NULL, 0, &dwBytesReturned, NULL))
    {
        printf("Failed to initialize Serial IO SPI device.\n");
        CloseHandle(hSpiDevice);
        free(pDevInterfaceDetailData);
        SetupDiDestroyDeviceInfoList(hDevInfo);
        return 1;
    }

    // 发送SPI数据
    SpiTransfer.DataBufferLength = SPI_TRANSFER_SIZE;
    SpiTransfer.pDataBuffer = TxBuffer;
    if (!DeviceIoControl(hSpiDevice, IOCTL_SERIAL_IO_SPI_TRANSFER, &SpiTransfer, sizeof(SERIAL_IO_SPI_TRANSFER), &SpiStatus, sizeof(SERIAL_IO_SPI_STATUS), &dwBytesReturned, NULL))
    {
        printf("Failed to transfer SPI data.\n");
        CloseHandle(hSpiDevice);
        free(pDevInterfaceDetailData);
        SetupDiDestroyDeviceInfoList(hDevInfo);
        return 1;
    }

    // 接收SPI数据
    SpiTransfer.DataBufferLength = SPI_TRANSFER_SIZE;
    SpiTransfer.pDataBuffer = RxBuffer;
    if (!DeviceIoControl(hSpiDevice, IOCTL_SERIAL_IO_SPI_TRANSFER, &SpiTransfer, sizeof(SERIAL_IO_SPI_TRANSFER), &SpiStatus, sizeof(SERIAL_IO_SPI_STATUS), &dwBytesReturned, NULL))
    {
        printf("Failed to transfer SPI data.\n");
        CloseHandle(hSpiDevice);
        free(pDevInterfaceDetailData);
        SetupDiDestroyDeviceInfoList(hDevInfo);
        return 1;
    }

    // 输出接收到的SPI数据
    for (int i = 0; i < SPI_TRANSFER_SIZE; i++)
    {
        printf("%02X ", RxBuffer[i]);
    }
    printf("\n");

    // 关闭Serial IO SPI设备
    DeviceIoControl(hSpiDevice, IOCTL_SERIAL_IO_SPI_UNINITIALIZE, NULL, 0, NULL, 0, &dwBytesReturned, NULL);
    CloseHandle(hSpiDevice);
    free(pDevInterfaceDetailData);
    SetupDiDestroyDeviceInfoList(hDevInfo);

    return 0;
}

需要注意的是，以上代码示例仅供参考，具体的使用方法和步骤可能会因为硬件设备和软件环境的不同而有所变化。在使用Intel Serial IO SPI接口的API函数之前，需要仔细阅读英特尔公司提供的说明和文档，了解具体的API函数名称、参数和用法，以确保代码的正确性和可靠性。