#pragma once#ifdef __cplusplusextern "C" {#endif// This file is in the Windows DDK available from Microsoft.#include "hidsdi.h"#include <setupapi.h>#include <dbt.h>#include <setupapi.h>int myUsbDeviceOpen(HANDLE *handle,HANDLE *hReader,HANDLE *hWriter,  WORD wVID, WORD wPID);void myUsbDeviceClose(HANDLE *handle,HANDLE *hreader,HANDLE *writer);int myUsbDeviceWrite(HANDLE handle, LPCVOID lpBuffer, DWORD dwSize);int myUsbDeviceRead(HANDLE handle, LPVOID lpBuffer, DWORD dwSize);#ifdef __cplusplus    }#endif

#include "stdafx.h"#include "myUSB_HID.h"#ifdef __cplusplusextern "C" {#endifHIDP_CAPS    Capabilities;PSP_INTERFACE_DEVICE_DETAIL_DATA HidFunctionClassData = NULL;int myUsbDeviceOpen(HANDLE *handle,HANDLE *hReader,HANDLE *hWriter,  WORD wVID, WORD wPID){    HANDLE hd;    HANDLE reader;    HANDLE writer;    BOOL bRet = FALSE;    GUID hidGuid;    HDEVINFO hardwareDeviceInfo;    SP_INTERFACE_DEVICE_DATA deviceInfoData;    ULONG predictedLength = 0;    ULONG requiredLength = 0;    PHIDP_PREPARSED_DATA    PreparsedData;    hd = *handle;    *handle = NULL;    CloseHandle(hd);    hd = INVALID_HANDLE_VALUE;    deviceInfoData.cbSize = sizeof(SP_INTERFACE_DEVICE_DATA);    HidD_GetHidGuid(&hidGuid);    hardwareDeviceInfo = SetupDiGetClassDevs(&hidGuid, NULL, NULL, (DIGCF_PRESENT|DIGCF_DEVICEINTERFACE));    for (int i=0; i<128; i++)    {        if (!SetupDiEnumDeviceInterfaces(hardwareDeviceInfo, 0, &hidGuid, i, &deviceInfoData))             continue;        SetupDiGetDeviceInterfaceDetail(hardwareDeviceInfo, &deviceInfoData, NULL, 0, &requiredLength, NULL);        predictedLength = requiredLength;        HidFunctionClassData = (PSP_INTERFACE_DEVICE_DETAIL_DATA)malloc(predictedLength);        if (!HidFunctionClassData)             continue;        HidFunctionClassData->cbSize = sizeof(SP_INTERFACE_DEVICE_DETAIL_DATA);        requiredLength = 0;        if (!SetupDiGetDeviceInterfaceDetail (hardwareDeviceInfo, &deviceInfoData, HidFunctionClassData, predictedLength, &requiredLength, NULL))             continue;        hd = CreateFile (HidFunctionClassData->DevicePath, 0, FILE_SHARE_READ|FILE_SHARE_WRITE, (LPSECURITY_ATTRIBUTES)NULL,OPEN_EXISTING, 0, NULL);//FILE_SHARE_READ|FILE_SHARE_WRITE        if (hd != INVALID_HANDLE_VALUE)        {            HIDD_ATTRIBUTES attri;            HidD_GetAttributes(hd, &attri);            if ((attri.VendorID == wVID) &&                (attri.ProductID == wPID))            {                writer=CreateFile (HidFunctionClassData->DevicePath, GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, (LPSECURITY_ATTRIBUTES)NULL,OPEN_EXISTING, 0, NULL);                reader=CreateFile(HidFunctionClassData->DevicePath,GENERIC_READ,FILE_SHARE_READ|FILE_SHARE_WRITE,(LPSECURITY_ATTRIBUTES)NULL,OPEN_EXISTING,0,NULL);                HidD_GetPreparsedData(hd,&PreparsedData);                    HidP_GetCaps(PreparsedData,&Capabilities);                bRet = TRUE;                break;            }            CloseHandle(hd);            hd = INVALID_HANDLE_VALUE;        }        free(HidFunctionClassData);    }    SetupDiDestroyDeviceInfoList(hardwareDeviceInfo);    *handle= hd;    *hReader= reader;    *hWriter = writer;    return bRet;}void myUsbDeviceClose(HANDLE *handle,HANDLE *hreader,HANDLE *writer){    CloseHandle(*hreader);    *hreader = INVALID_HANDLE_VALUE;    CloseHandle(*writer);    *writer = INVALID_HANDLE_VALUE;    CloseHandle(*handle);    *handle = INVALID_HANDLE_VALUE;    if(HidFunctionClassData!=NULL)    {        free(HidFunctionClassData);        HidFunctionClassData = NULL;    }}int myUsbDeviceWrite(HANDLE handle, LPCVOID lpBuffer, DWORD dwSize){    BYTE wBuffer[1024] = {0};    DWORD dwRet = 0;    BOOL bRet;    wBuffer[0] = 0x00;    wBuffer[1] = (unsigned char)dwSize;    memcpy(&wBuffer[2], lpBuffer, min(Capabilities.OutputReportByteLength, dwSize));    bRet = WriteFile(handle, wBuffer, Capabilities.OutputReportByteLength, &dwRet, NULL);    return bRet;}int myUsbDeviceRead(HANDLE handle, LPVOID lpBuffer, DWORD dwSize){    BYTE rBuffer[1024] = {0};    DWORD dwRet;    BOOL bRet;    rBuffer[0] = 0x00;    bRet = ReadFile(handle, rBuffer, Capabilities.InputReportByteLength, &dwRet, NULL);    memcpy(lpBuffer, &rBuffer[1], min(rBuffer[0], dwSize));    return bRet;}#ifdef __cplusplus    }#endif