WINCE下TQ2440通过I2C读写EEPROM的应用程序

只看该作者 · 2013-9-5 15:54

本帖最后由 pensivor 于 2013-9-5 16:01 编辑

附我的代码
我在TQ2440下面运行，始终出现读写都超时：dwErrorCode都是0x0005b4

// iicDlg.cpp : 实现文件
//

#include "stdafx.h"
#include "iic.h"
#include "iicDlg.h"
#include <WinIoCtl.h>

#ifdef _DEBUG
#define new DEBUG_NEW
#endif

typedef struct _I2C_IO_DESC {
      DWORD SlaveAddr;    // Target Slave Address
      DWORD WordAddr;
      PUCHAR  Data;          // pBuffer
      DWORD Count;       // nBytes to read/write
} I2C_IO_DESC, *PI2C_IO_DESC;

HANDLE hDve;

/*宏定义*/
#define FILE_DEVICE_I2C    FILE_DEVICE_CONTROLLER
// IN:  PI2C_IO_DESC
#define IOCTL_I2C_READ \
      CTL_CODE(FILE_DEVICE_I2C, 0, METHOD_BUFFERED, FILE_ANY_ACCESS)

// IN:  PI2C_IO_DESC
#define IOCTL_I2C_WRITE \
      CTL_CODE(FILE_DEVICE_I2C, 1, METHOD_BUFFERED, FILE_ANY_ACCESS)

#define IOCTL_I2C_GET_FASTCALL  \
      CTL_CODE(FILE_DEVICE_I2C, 2, METHOD_BUFFERED, FILE_ANY_ACCESS)

#define IOCTL_RST CTL_CODE(FILE_DEVICE_UNKNOWN, 0x802, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_DIS CTL_CODE(FILE_DEVICE_UNKNOWN, 0x803, METHOD_BUFFERED, FILE_ANY_ACCESS)

//实例化两个结构体
I2C_IO_DESC i2c_AddressData;
I2C_IO_DESC i2c_Data;

// CiicDlg 对话框

CiicDlg::CiicDlg(CWnd* pParent /*=NULL*/)
      : CDialog(CiicDlg::IDD, pParent)
{
      m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CiicDlg::DoDataExchange(CDataExchange* pDX)
{
      CDialog::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CiicDlg, CDialog)
#if defined(_DEVICE_RESOLUTION_AWARE) && !defined(WIN32_PLATFORM_WFSP)
      ON_WM_SIZE()
#endif
      //}}AFX_MSG_MAP
END_MESSAGE_MAP()

// CiicDlg 消息处理程序

BOOL CiicDlg::OnInitDialog()
{
      CDialog::OnInitDialog();

      // 设置此对话框的图标。当应用程序主窗口不是对话框时，框架将自动
      //  执行此操作
      SetIcon(m_hIcon, TRUE);                      // 设置大图标
      SetIcon(m_hIcon, FALSE);             // 设置小图标

      // TODO: 在此添加额外的初始化代码

      while(1)
      {
      hDve=CreateFile(L"I2C0:",GENERIC_READ|GENERIC_WRITE,0,NULL,OPEN_EXISTING,0,0);
      if(hDve==INVALID_HANDLE_VALUE)
      {
            TRACE(L"Open Device Faild!\n");
            return 0;
      }
      DWORD dwErrorCode;
      DWORD RetBytes;

      BYTE pBuffout[100];
      memset(pBuffout,0,100);

      //读出数据数组
      pBuffout[0]=0xb4;
      pBuffout[1]=0x11;
      pBuffout[2]=0x22;
      pBuffout[3]=0x0a;

      i2c_AddressData.WordAddr = 0x08;
      i2c_AddressData.SlaveAddr = 0xa0;
      i2c_AddressData.Data = pBuffout; //读出数据
      i2c_AddressData.Count = 1;

      BYTE pBuffin[100];  //写入数据数组
      unsigned char ReadDictate = 0x1F;
      i2c_Data.WordAddr =0x08;
      i2c_Data.SlaveAddr = 0xa1;
      i2c_Data.Data = pBuffin;
      i2c_Data.Count = 1;

      if (!DeviceIoControl(hDve,IOCTL_I2C_WRITE,&i2c_AddressData,sizeof(i2c_AddressData),NULL,NULL,&RetBytes,NULL))
      {
            dwErrorCode = GetLastError();
            TRACE(L"GetLastErrorRead:%d\r\n",dwErrorCode);
      }
      TRACE(L"%02X %02X %02X",i2c_AddressData.WordAddr,i2c_AddressData.SlaveAddr,i2c_AddressData.Data);

      if(!DeviceIoControl(hDve,IOCTL_I2C_READ,&i2c_Data,sizeof(i2c_Data),NULL,NULL,&RetBytes,NULL))
      {
            dwErrorCode = GetLastError();
            TRACE(L"GetLastErrorRead:%d\r\n",dwErrorCode);
      }
      Sleep(1);
      TRACE(L"%02X %02X %02X",i2c_Data.WordAddr,i2c_Data.SlaveAddr,i2c_Data.Data);

      }

      return TRUE;  // 除非将焦点设置到控件，否则返回 TRUE
}

#if defined(_DEVICE_RESOLUTION_AWARE) && !defined(WIN32_PLATFORM_WFSP)
void CiicDlg::OnSize(UINT /*nType*/, int /*cx*/, int /*cy*/)
{
      if (AfxIsDRAEnabled())
      {
            DRA::RelayoutDialog(
                     AfxGetResourceHandle(),
                     this->m_hWnd,
                     DRA::GetDisplayMode() != DRA::Portrait ?
                     MAKEINTRESOURCE(IDD_IIC_DIALOG_WIDE) :
                     MAKEINTRESOURCE(IDD_IIC_DIALOG));
      }
}
#endif

只看该作者 · 2013-9-5 15:55

这个代码在mini2440开发板上可以顺利读写，但是在TQ2440上就是读写超时，自己先顶一个

WINCE下TQ2440通过I2C读写EEPROM的应用程序

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