HID-USB设备读写开发

最新推荐文章于 2022-11-08 18:28:13 发布

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最新推荐文章于 2022-11-08 18:28:13 发布 · 814 阅读

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CC 4.0 BY-SA版权

本文详细介绍了如何进行HID-USB设备的读写开发，包括遍历设备以获取设备路径，使用设备路径建立连接，以及读取和写入缓冲区的操作步骤。

1. 遍历设备, 获取HID device的 device path

bool ISMCol::getHIDDevs(TCHAR **arrWireless, TCHAR **arrWired, LPDWORD lpdwWirelessNums, LPDWORD lpdwWiredNums)
{
	GUID hidGuid;
	HDEVINFO hDevInfo;
	DWORD dwDevIndex;
	SP_INTERFACE_DEVICE_DATA interfaceData;

	DWORD dwWireless = 0, dwWired = 0;

	HidD_GetHidGuid(&hidGuid);
	interfaceData.cbSize = sizeof(SP_INTERFACE_DEVICE_DATA);

	hDevInfo = SetupDiGetClassDevs(&hidGuid, NULL, NULL, DIGCF_PRESENT | DIGCF_INTERFACEDEVICE);
	if (hDevInfo == INVALID_HANDLE_VALUE)
	{
		return false;
	}

	for (dwDevIndex = 0; SetupDiEnumDeviceInterfaces(hDevInfo, NULL, &hidGuid, dwDevIndex, &interfaceData); ++dwDevIndex)
	{
		DWORD dwRequiredSize;
		PSP_INTERFACE_DEVICE_DETAIL_DATA detailData;
		SP_DEVINFO_DATA devinfoData;
		TCHAR szDevPath[MAX_PATH];
		ZeroMemory(szDevPath, MAX_PATH);
		SetupDiGetDeviceInterfaceDetail(hDevInfo, &interfaceData, NULL, 0, &dwReq