testiic.cpp

来自「IIC WINCE5.0 流接口驱动程序及测试」· C++ 代码 · 共 66 行

// TestIIC.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"

typedef struct _I2C_IO_DESC 
{
	DWORD SlaveAddr; // Target Slave Address
	DWORD WordAddr; // Starting Slave Word Address
	LPBYTE pData; // pBuffer
	DWORD Count; // nBytes to read/write
} I2C_IO_DESC, *PI2C_IO_DESC;


#define IOCTL_I2C_READ 1
#define IOCTL_SUBSAMPLE 2
#define IOCTL_I2C_GET_FASTCALL 3
#define IOCTL_I2C_WRITE 4

int _tmain(int argc, TCHAR *argv[], TCHAR *envp[])
{
	HANDLE handle;
	DWORD Ret;
	DWORD RetBytes;
	BYTE pBuffin[100];
	BYTE pBuffOut[100];
	I2C_IO_DESC xx;

	handle=CreateFile(TEXT("I2C1:"),GENERIC_READ|GENERIC_WRITE,NULL,NULL,OPEN_EXISTING,NULL,NULL);
	if(handle==INVALID_HANDLE_VALUE) return 0;

	memset(pBuffin,0,100);
	xx.SlaveAddr=0xa0;
	xx.WordAddr=512;
	xx.Count=100;
	xx.pData=pBuffin;
    Ret=DeviceIoControl(handle,IOCTL_I2C_READ,&xx,sizeof(xx),NULL,0,&RetBytes,NULL);  //

	for(int i=0;i<100;i++)
		pBuffOut[i]=i;
	xx.SlaveAddr=0xa0;
	xx.WordAddr=512;
	xx.Count=100;
	xx.pData=pBuffOut;
    Ret=DeviceIoControl(handle,IOCTL_I2C_WRITE,&xx,sizeof(xx),NULL,0,&RetBytes,NULL);  //

	memset(pBuffin,0,100);
	xx.SlaveAddr=0xa0;
	xx.WordAddr=512;
	xx.Count=100;
	xx.pData=pBuffin;
    Ret=DeviceIoControl(handle,IOCTL_I2C_READ,&xx,sizeof(xx),NULL,0,&RetBytes,NULL);  //

	for(int i=0;i<100;i++)
		pBuffOut[i]=0x33;
	xx.SlaveAddr=0xa0;
	xx.WordAddr=512;
	xx.Count=100;
	xx.pData=pBuffOut;
    Ret=DeviceIoControl(handle,IOCTL_I2C_WRITE,&xx,sizeof(xx),NULL,0,&RetBytes,NULL);  //
	if(handle)
		CloseHandle(handle);
    return 0;
}