按地址读取数据

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原创最新推荐文章于 2026-07-02 14:42:14 发布 2.2k 阅读 AI 写同款· GEO 优化 ›

FPGA逻辑验证不求人：用WinDriver 10.21快速调试PCI板卡（附VS2015工程）本文详细介绍了如何使用WinDriver 10.21驱动开发工具快速调试FPGA的PCI板卡，无需编写复杂底层驱动即可完成硬件逻辑验证。通过环境搭建、设备识别、驱动框架生成和VS2015工程实现等步骤，帮助开发者高效完成PCIe接口验证，大幅提升FPGA开发效率。阅读详情

对已知的地址进行数据读取，需要用到下面读取函数：

UInt32 wdc_lib_decl.WDC_ReadAddr8(WDC_DEVICE_HANDLE hDev, UInt32 dwAddrSpace, uint dwOffset, ref byte val)   //1 byte
UInt32 wdc_lib_decl.WDC_ReadAddr16(WDC_DEVICE_HANDLE hDev, UInt32 dwAddrSpace, uint dwOffset, ref ushort val)//2 bytes
UInt32 wdc_lib_decl.WDC_ReadAddr32(WDC_DEVICE_HANDLE hDev, UInt32 dwAddrSpace, uint dwOffset, ref uint val)  //3 bytes
UInt32 wdc_lib_decl.WDC_ReadAddr64(WDC_DEVICE_HANDLE hDev, UInt32 dwAddrSpace, uint dwOffset, ref ulong val) //4 bytes

Example：

<pre name="code" class="csharp">

private WDC_ADDR_MODE m_mode = WDC_ADDR_MODE.WDC_MODE_8;
private byte[] m_bData = new byte[1];//result
private WDC_ADDR_MODE m_mode = WDC_ADDR_MODE.WDC_MODE_16;
private byte[] m_wData = new byte[2];//result
private WDC_ADDR_MODE m_mode = WDC_ADDR_MODE.WDC_MODE_32;
private byte[] m_u32Data = new byte[4];//result
private WDC_ADDR_MODE m_mode = WDC_ADDR_MODE.WDC_MODE_64;
private byte[] m_u64Data = new byte[8];//result

private UInt32 m_dwOffset = 0x00;
private UInt32 m_dwBar = (UInt32)cmboBar.SelectedIndex;//PCI BAR

switch (m_mode)
{
    case WDC_ADDR_MODE.WDC_MODE_8:
        dwStatus = wdc_lib_decl.WDC_ReadAddr8(device.Handle, m_dwBar, m_dwOffset, ref m_bData[0]);
        break;
    case WDC_ADDR_MODE.WDC_MODE_16:
        dwStatus = wdc_lib_decl.WDC_ReadAddr16(device.Handle, m_dwBar, m_dwOffset, ref m_wData[0]);
        break;
    case WDC_ADDR_MODE.WDC_MODE_32:
        dwStatus = wdc_lib_decl.WDC_ReadAddr32(device.Handle, m_dwBar, m_dwOffset, ref m_u32Data[0]);
        break;
    case WDC_ADDR_MODE.WDC_MODE_64:
        dwStatus =dc_lib_decl.WDC_ReadAddr64(device.Handle, m_dwBar, m_dwOffset, ref m_u64Data[0]);
        break;
}

大量数据的读取，要用到

<span style="font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);"></span><pre name="code" class="csharp">

UInt32 DLLCALLCONV WDC_ReadAddrBlock(
    WDC_DEVICE_HANDLE hDev,
    UInt32 dwAddrSpace,
    KPTR dwOffset,
    UInt32 dwBytes,
    PVOID pData,//output data pointer; could be array of byte,UInt16,UInt32,UInt64
    WDC_ADDR_MODE mode,
    WDC_ADDR_RW_OPTIONS options);

Example：

private byte[] m_bData;
private UInt16[] m_wData;
private UInt32[] m_u32Data;
private UInt64[] m_u64Data;	
UInt32 dwFloorBytes = ((UInt32)(m_dwBytes / (UInt32)m_mode)) *(UInt32)m_mode;//number of bytes to be read
private bool m_bAutoInc = true;//Auto Increase
WDC_ADDR_RW_OPTIONS dwOptions = (m_bAutoInc ?WDC_ADDR_RW_OPTIONS.WDC_ADDR_RW_DEFAULT : WDC_ADDR_RW_OPTIONS.WDC_ADDR_RW_NO_AUTOINC);
switch (m_mode)
{
    case WDC_ADDR_MODE.WDC_MODE_8:
        dwStatus = wdc_lib_decl.WDC_ReadAddrBlock(device.Handle, m_dwBar, m_dwOffset, dwFloorBytes, m_bData, m_mode, dwOptions);
        break;
    case WDC_ADDR_MODE.WDC_MODE_16:
        dwStatus = wdc_lib_decl.WDC_ReadAddrBlock(device.Handle, m_dwBar, m_dwOffset, dwFloorBytes, m_wData, m_mode, dwOptions);
        break;

    case WDC_ADDR_MODE.WDC_MODE_32:
        dwStatus = wdc_lib_decl.WDC_ReadAddrBlock(device.Handle, m_dwBar, m_dwOffset, dwFloorBytes, m_u32Data, m_mode, dwOptions);
        break;

    case WDC_ADDR_MODE.WDC_MODE_64:
        dwStatus = wdc_lib_decl.WDC_ReadAddrBlock(device.Handle, m_dwBar, m_dwOffset, dwFloorBytes, m_u64Data, m_mode, dwOptions);
        break;
}

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