wince2416 基于iic的温度测量仪

来源：互联网发布：用java输出三角形编辑：程序博客网时间：2024/04/28 09:42

主要参考2416下的电容屏和摄像头驱动代码

首先配置然后写入然后读。

代码如下

CString lpGroupName=TEXT("I2C0:");
hI2C = CreateFile(lpGroupName,
       GENERIC_READ|GENERIC_WRITE,
       FILE_SHARE_READ|FILE_SHARE_WRITE,
       NULL, OPEN_EXISTING, 0, 0);

if(hI2C == INVALID_HANDLE_VALUE)
{
  MessageBox(TEXT("open error"));
}

I2C_INIT_DESC I2CInitDesc;
    I2CInitDesc.IN_wSlaveAddr      =0xb6;
I2CInitDesc.IN_dwClockSpeed     = 200;
I2CInitDesc.OUT_dwActualSpeed   = 0;
if(!DeviceIoControl(hI2C,
      IOCTL_I2C_INIT,
      &I2CInitDesc, sizeof(I2CInitDesc),
      NULL, 0,
      NULL, NULL) )
{

}

    Sleep(10);
I2C_WRITE_DESC I2CWriteDesc;
    I2C_READ_DESC I2CReadDesc;
unsigned char i1=0x27;
CString ad;
unsigned char i[31]="";
CString pp;

I2CWriteDesc.IO_pbtData = &i1;
I2CWriteDesc.IN_dwData    = 1;
I2CWriteDesc.IN_bStop = false;

for(int yy1=0;yy1<3;yy1++)
  {
  if ( !DeviceIoControl(hI2C,
        IOCTL_I2C_GENERAL_WRITE,
        &I2CWriteDesc, sizeof(I2C_WRITE_DESC),
        NULL, 0,
        NULL, NULL) )

    {

    }
  else
   {
I2C_READ_DESC I2CReadDesc;
//i=0;
I2CReadDesc.IO_pbtData   = i;
I2CReadDesc.IN_dwData   = 31;
I2CReadDesc.IN_bStop  = true;
if (!DeviceIoControl(hI2C,
         IOCTL_I2C_GENERAL_READ,
         &I2CReadDesc, sizeof(I2C_READ_DESC),
         NULL, 0,
         NULL, NULL))
    {

    }

int x = i[0];
int y =i[1];
float cal=((y<<8)|x)*0.02-273.15;

ad.Format(TEXT("%0.2f ℃"),cal);
m_string.SetWindowTextW(ad);
   }

  }

CloseHandle(hI2C);

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