USB通信编程

fulvyou 2008-08-22 03:16:41

网上有这么一段USB的驱动程序（其中内部底层的驱动已经做好，只要我们用），是用vc的动态链接库来实现的，但是它提供了一个.h的头文件和库文件。我把它引入到我的系统后，调用它提供的方法，但是不知道怎么用这些方法，它们到底有什么用处？有经验的大侠可以指点一下不？
其头文件具体代码如下：

FTD2XX_API
FT_STATUS WINAPI FT_Open(
int deviceNumber,
FT_HANDLE *pHandle
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_OpenEx(
PVOID pArg1,
DWORD Flags,
FT_HANDLE *pHandle
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_ListDevices(
PVOID pArg1,
PVOID pArg2,
DWORD Flags
);

/*关闭USB句柄*/
FTD2XX_API
FT_STATUS WINAPI FT_Close(
FT_HANDLE ftHandle
);

/*PVOID:指向void的指针
DWORD: 两个字节，即一个字
pHandle:句柄*/
FTD2XX_API
FT_STATUS WINAPI FT_Read(
FT_HANDLE ftHandle,
LPVOID lpBuffer,
DWORD nBufferSize,
LPDWORD lpBytesReturned
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_Write(
FT_HANDLE ftHandle,
LPVOID lpBuffer,
DWORD nBufferSize,
LPDWORD lpBytesWritten
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_IoCtl(
FT_HANDLE ftHandle,
DWORD dwIoControlCode,
LPVOID lpInBuf,
DWORD nInBufSize,
LPVOID lpOutBuf,
DWORD nOutBufSize,
LPDWORD lpBytesReturned,
LPOVERLAPPED lpOverlapped
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_SetBaudRate(
FT_HANDLE ftHandle,
ULONG BaudRate
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_SetDivisor(
FT_HANDLE ftHandle,
USHORT Divisor
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_SetDataCharacteristics(
FT_HANDLE ftHandle,
UCHAR WordLength,
UCHAR StopBits,
UCHAR Parity
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_SetFlowControl(
FT_HANDLE ftHandle,
USHORT FlowControl,
UCHAR XonChar,
UCHAR XoffChar
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_ResetDevice(
FT_HANDLE ftHandle
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_SetDtr(
FT_HANDLE ftHandle
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_ClrDtr(
FT_HANDLE ftHandle
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_SetRts(
FT_HANDLE ftHandle
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_ClrRts(
FT_HANDLE ftHandle
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_GetModemStatus(
FT_HANDLE ftHandle,
ULONG *pModemStatus
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_SetChars(
FT_HANDLE ftHandle,
UCHAR EventChar,
UCHAR EventCharEnabled,
UCHAR ErrorChar,
UCHAR ErrorCharEnabled
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_Purge(
FT_HANDLE ftHandle,
ULONG Mask
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_SetTimeouts(
FT_HANDLE ftHandle,
ULONG ReadTimeout,
ULONG WriteTimeout
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_GetQueueStatus(
FT_HANDLE ftHandle,
DWORD *dwRxBytes
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_SetEventNotification(
FT_HANDLE ftHandle,
DWORD Mask,
PVOID Param
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_GetStatus(
FT_HANDLE ftHandle,
DWORD *dwRxBytes,
DWORD *dwTxBytes,
DWORD *dwEventDWord
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_SetBreakOn(
FT_HANDLE ftHandle
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_SetBreakOff(
FT_HANDLE ftHandle
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_SetWaitMask(
FT_HANDLE ftHandle,
DWORD Mask
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_WaitOnMask(
FT_HANDLE ftHandle,
DWORD *Mask
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_GetEventStatus(
FT_HANDLE ftHandle,
DWORD *dwEventDWord
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_ReadEE(
FT_HANDLE ftHandle,
DWORD dwWordOffset,
LPWORD lpwValue
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_WriteEE(
FT_HANDLE ftHandle,
DWORD dwWordOffset,
WORD wValue
);

/**/
FTD2XX_API
FT_STATUS WINAPI FT_EraseEE(
FT_HANDLE ftHandle
);

这里面的方法的都是什么意思啊？名字和参数都看不懂！
提供答案的，感激不尽！！！

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