windows下USB通讯

红太狼 2022-11-29 12:58 499阅读 0赞

# 前言 #

Windows下USB通讯，利用设备VID与PID查询设备，利用了windows的**setupapi.lib**与**hid.lib**库，开发时需要包含  
\#include <hidsdi.h>  
\#include <setupapi.h> 头文件

# **USB通讯类** #

## **CommUsb.h** ##

#pragma once
    
    #include <windows.h> //一定要加入该头文件
    #include <iostream>
    #include <vector>
    
    extern "C" {
    #include <hidsdi.h> 
    #include <setupapi.h>  
    }
    #pragma comment (lib, "setupapi.lib")
    #pragma comment (lib, "hid.lib")
    using namespace std;
    
    
    class CommUsb
    {
    public:
    	CommUsb();
    	~CommUsb();
    
    	//根据usb的VID与PID打开设备
    	BOOL DeviceOpen(HANDLE&handle, WORD wVID, WORD wPID);
    
    	//关闭设备，释放句柄类资源
    	void DeviceClose();
    
    	//向usb写入数据
    	BOOL DeviceWrite(LPCVOID lpBuffer, DWORD dwSize);
    
    	//从usb读取响应数据
    	void DeviceRead();
    	
    	//读取数据线程
    	static void ReadThread(CommUsb *usb);
    private:
    	HANDLE m_handle;
    	int m_size;
    	DWORD m_dwResult;
    public:
    	BYTE m_rBuffer[64];
    	
    };

## **CommUsb.cpp** ##

#include "CommUsb.h"
    #include <thread>
    
    CommUsb::CommUsb()
    {
    	m_rBuffer[64] = { 0 };
    	m_handle = NULL;
    	m_size = 0;
    	m_dwResult = 0;
    }
    
    CommUsb::~CommUsb()
    {
    	
    }
    
    void CommUsb::ReadThread(CommUsb *usb)
    {
    	ReadFile(usb->m_handle, usb->m_rBuffer, usb->m_size, &usb->m_dwResult, NULL);
    }
    
    BOOL CommUsb::DeviceOpen(HANDLE&handle, WORD wVID, WORD wPID)
    {
    	
    	BOOL bRet = FALSE;
    	GUID hidGuid;
    	HDEVINFO hardwareDeviceInfo;
    	SP_INTERFACE_DEVICE_DATA deviceInfoData;
    	PSP_INTERFACE_DEVICE_DETAIL_DATA functionClassDeviceData = NULL;
    	ULONG predictedLength = 0;
    	ULONG requiredLength = 0;
    	CloseHandle(handle);
    	handle = 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;
    		functionClassDeviceData = (PSP_INTERFACE_DEVICE_DETAIL_DATA)malloc(predictedLength);
    		if (!functionClassDeviceData) continue;
    		functionClassDeviceData->cbSize = sizeof(SP_INTERFACE_DEVICE_DETAIL_DATA);
    		if (!SetupDiGetDeviceInterfaceDetail(hardwareDeviceInfo, &deviceInfoData, functionClassDeviceData, predictedLength, &requiredLength, NULL)) break;
    		handle = CreateFile(functionClassDeviceData->DevicePath, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);//   倒数第二个参数可以指定为异步FILE_FLAG_OVERLAPPED   0为同步
    																																// cout <<"devicePath"<<functionClassDeviceData->DevicePath<<endl;
    		if (handle != INVALID_HANDLE_VALUE)
    		{
    			HIDD_ATTRIBUTES attri;
    			HidD_GetAttributes(handle, &attri);
    			if ((attri.VendorID == wVID) && (attri.ProductID == wPID))
    			{
    				
    				m_handle = handle;   //将USB设备句柄存入类成员变量
    				bRet = TRUE;
    				break;
    			}
    			CloseHandle(handle);
    			handle = INVALID_HANDLE_VALUE;
    		}
    		
    		
    	}
    	SetupDiDestroyDeviceInfoList(hardwareDeviceInfo);
    	return bRet;
    }
    
    void CommUsb::DeviceClose()
    {
    
    	CloseHandle(m_handle);
    
    	m_handle = INVALID_HANDLE_VALUE;
    }
    
    BOOL CommUsb::DeviceWrite(LPCVOID lpBuffer, DWORD dwSize)
    {
    	if (m_handle == INVALID_HANDLE_VALUE)
    	{
    		//MessageBox(NULL,"数据写入失败","失败！",MB_OK);
    		return 0;
    	}
    	
    	DWORD dwRet;
    	BOOL bRet;
    
    	PHIDP_PREPARSED_DATA PreparsedData;
    	HIDP_CAPS Capabilities;
    
    	HidD_GetPreparsedData(m_handle, &PreparsedData);
    	HidP_GetCaps(PreparsedData, &Capabilities);
    
    	m_rBuffer[0] = 0x00;  //第一个字节为report Id,不能省略
    
    	memcpy(m_rBuffer + 1, lpBuffer, min(20, dwSize));
    
    	//这里写的长度要大于Capabilities.OutputReportByteLength
    	
    	bRet = WriteFile(m_handle, m_rBuffer, Capabilities.OutputReportByteLength, &dwRet, NULL);
    	if (bRet)
    	{
    		//MessageBox(NULL,"写入数据成功","成功！",MB_OK);
    	}
    	return bRet;
    }
    
    void CommUsb::DeviceRead()
    {
    	if (m_handle == INVALID_HANDLE_VALUE)
    	{
    		//MessageBox(NULL, "数据读取失败", "失败！", MB_OK);
    		//return 0;
    	}
    
    	PHIDP_PREPARSED_DATA PreparsedData;
    	HIDP_CAPS Capabilities;
    	HidD_GetPreparsedData(m_handle, &PreparsedData);
    	HidP_GetCaps(PreparsedData, &Capabilities);
    	//memcpy(&wBuffer[2], lpBuffer, min(6, dwSize));
    	COMMTIMEOUTS timeout;
    	timeout.ReadIntervalTimeout = 1000;
    	timeout.ReadTotalTimeoutConstant = 1000;
    	timeout.ReadTotalTimeoutMultiplier = 1000;
    	SetCommTimeouts(m_handle, &timeout);
    
    	//读的长度也一定要是Capabilities.OutputReportByteLength
    
    	//线程函数参数初始化
    	m_size = Capabilities.OutputReportByteLength;
    	
    	thread Rthread(ReadThread, this);
    	Rthread.join();
    	
    
    	//return bRet;
    }

# 测试示例 #

## Win32测试 ##

#include "../common/CommUsb.h"
    
    int main()
    {
    	CommUsb Myusb;
    
    	HANDLE handle = NULL;
    	
    	if (Myusb.DeviceOpen(handle, 0x0483, 0x5750) == FALSE)
    	{
    		MessageBox(NULL, "打开设备失败", "错误", MB_OK);
    	}
    
    	BYTE str[20] = { 0 };
    	/*str[0] = 0x00;
    	str[1] = 0x80;
    	str[2] = 0xAA;
    	str[3] = 0xFD;
    	str[4] = 0x02;
    	str[5] = 0x60;
    	str[6] = 0x06;
    	str[7] = 0x66;*/
    
    	str[0] = 0x00;
    	str[1] = 0x80;
    	str[2] = 0xAA;
    	str[3] = 0xFD;
    	str[4] = 0x02;
    	str[5] = 0x60;
    	str[6] = 0x07;
    	str[7] = 0x67;
    	
    	Myusb.DeviceWrite(str, 20);
    	Myusb.DeviceRead();
    
    	for (int i = 0; i < sizeof(Myusb.m_rBuffer); i++)
    	{
    		printf("%02hhx ", Myusb.m_rBuffer[i]);
    	}
    	cout << endl;
    	Myusb.DeviceClose();
    	system("pause");
    	return 0;
    
    }

## MFC测试 ##

// USBMfcTestDlg.cpp : 实现文件
    //
    
    #include "stdafx.h"
    #include "USBMfcTest.h"
    #include "USBMfcTestDlg.h"
    #include "afxdialogex.h"
    
    
    #ifdef _DEBUG
    #define new DEBUG_NEW
    #endif
    
    
    // 用于应用程序“关于”菜单项的 CAboutDlg 对话框
    
    class CAboutDlg : public CDialogEx
    {
    public:
    	CAboutDlg();
    
    // 对话框数据
    #ifdef AFX_DESIGN_TIME
    	enum { IDD = IDD_ABOUTBOX };
    #endif
    
    	protected:
    	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV 支持
    
    // 实现
    protected:
    	DECLARE_MESSAGE_MAP()
    };
    
    CAboutDlg::CAboutDlg() : CDialogEx(IDD_ABOUTBOX)
    {
    }
    
    void CAboutDlg::DoDataExchange(CDataExchange* pDX)
    {
    	CDialogEx::DoDataExchange(pDX);
    }
    
    BEGIN_MESSAGE_MAP(CAboutDlg, CDialogEx)
    END_MESSAGE_MAP()
    
    
    // CUSBMfcTestDlg 对话框
    
    
    
    CUSBMfcTestDlg::CUSBMfcTestDlg(CWnd* pParent /*=NULL*/)
    	: CDialogEx(IDD_USBMFCTEST_DIALOG, pParent)
    {
    	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
    	m_handle = NULL;
    }
    
    void CUSBMfcTestDlg::DoDataExchange(CDataExchange* pDX)
    {
    	CDialogEx::DoDataExchange(pDX);
    	DDX_Control(pDX, IDC_EDIT_VID, m_Edit_VID);
    	DDX_Control(pDX, IDC_EDIT_PID, m_Edit_PID);
    	DDX_Control(pDX, IDC_EDIT_SEND, m_Edit_Send);
    	DDX_Control(pDX, IDC_EDIT_RECIEVE, m_Edit_Recieve);
    }
    
    BEGIN_MESSAGE_MAP(CUSBMfcTestDlg, CDialogEx)
    	ON_WM_SYSCOMMAND()
    	ON_WM_PAINT()
    	ON_WM_QUERYDRAGICON()
    	ON_BN_CLICKED(IDC_oPEN, &CUSBMfcTestDlg::OnBnClickedopen)
    	ON_BN_CLICKED(IDC_BUTTON1, &CUSBMfcTestDlg::OnBnClickedButton1)
    	ON_BN_CLICKED(IDC_BUTTON2, &CUSBMfcTestDlg::OnBnClickedButton2)
    	ON_BN_CLICKED(IDC_CLOSE, &CUSBMfcTestDlg::OnBnClickedClose)
    	ON_BN_CLICKED(IDC_SEND, &CUSBMfcTestDlg::OnBnClickedSend)
    	ON_WM_TIMER()
    END_MESSAGE_MAP()
    
    
    // CUSBMfcTestDlg 消息处理程序
    
    BOOL CUSBMfcTestDlg::OnInitDialog()
    {
    	CDialogEx::OnInitDialog();
    
    	// 将“关于...”菜单项添加到系统菜单中。
    
    	// IDM_ABOUTBOX 必须在系统命令范围内。
    	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
    	ASSERT(IDM_ABOUTBOX < 0xF000);
    
    	CMenu* pSysMenu = GetSystemMenu(FALSE);
    	if (pSysMenu != NULL)
    	{
    		BOOL bNameValid;
    		CString strAboutMenu;
    		bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);
    		ASSERT(bNameValid);
    		if (!strAboutMenu.IsEmpty())
    		{
    			pSysMenu->AppendMenu(MF_SEPARATOR);
    			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
    		}
    	}
    
    	// 设置此对话框的图标。  当应用程序主窗口不是对话框时，框架将自动
    	//  执行此操作
    	SetIcon(m_hIcon, TRUE);			// 设置大图标
    	SetIcon(m_hIcon, FALSE);		// 设置小图标
    
    	// TODO: 在此添加额外的初始化代码
    
    	//初始化各个输入框的初始值
    	m_Edit_VID.SetWindowText("0483");
    	m_Edit_PID.SetWindowText("5750");
    	m_Edit_Send.SetWindowText("0080AAFD02600666");
    
    	return TRUE;  // 除非将焦点设置到控件，否则返回 TRUE
    }
    
    void CUSBMfcTestDlg::OnSysCommand(UINT nID, LPARAM lParam)
    {
    	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
    	{
    		CAboutDlg dlgAbout;
    		dlgAbout.DoModal();
    	}
    	else
    	{
    		CDialogEx::OnSysCommand(nID, lParam);
    	}
    }
    
    // 如果向对话框添加最小化按钮，则需要下面的代码
    //  来绘制该图标。  对于使用文档/视图模型的 MFC 应用程序，
    //  这将由框架自动完成。
    
    void CUSBMfcTestDlg::OnPaint()
    {
    	if (IsIconic())
    	{
    		CPaintDC dc(this); // 用于绘制的设备上下文
    
    		SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);
    
    		// 使图标在工作区矩形中居中
    		int cxIcon = GetSystemMetrics(SM_CXICON);
    		int cyIcon = GetSystemMetrics(SM_CYICON);
    		CRect rect;
    		GetClientRect(&rect);
    		int x = (rect.Width() - cxIcon + 1) / 2;
    		int y = (rect.Height() - cyIcon + 1) / 2;
    
    		// 绘制图标
    		dc.DrawIcon(x, y, m_hIcon);
    	}
    	else
    	{
    		CDialogEx::OnPaint();
    	}
    }
    
    //当用户拖动最小化窗口时系统调用此函数取得光标
    //显示。
    HCURSOR CUSBMfcTestDlg::OnQueryDragIcon()
    {
    	return static_cast<HCURSOR>(m_hIcon);
    }
    
    
    
    void CUSBMfcTestDlg::OnBnClickedopen()
    {
    	// TODO: 在此添加控件通知处理程序代码
    	UpdateData();
    	
    	CString StrVid,StrPid,StrRecv;
    	WORD Hvid = 0,Hpid = 0;
    
    	m_Edit_VID.GetWindowTextA(StrVid);
    	m_Edit_PID.GetWindowTextA(StrPid);
    	Hvid = _tcstoul(StrVid, 0, 16);
    	Hpid = _tcstoul(StrPid, 0, 16);
    	
    	if (StrVid.IsEmpty() || StrPid.IsEmpty())
    	{
    		Hvid = 0x0483;
    		Hpid = 0x5750;
    	}
    
    	if (MyUsb.DeviceOpen(m_handle, Hvid, Hpid) == FALSE)
    	{
    		m_Edit_Recieve.GetWindowTextA(StrRecv);
    		m_Edit_Recieve.SetWindowTextA(StrRecv + "USB设备打开失败\r\n");
    	}
    	else
    	{
    		m_Edit_Recieve.GetWindowTextA(StrRecv);
    		m_Edit_Recieve.SetWindowTextA(StrRecv + "USB设备打开成功\r\n");
    	}
    }
    
    
    void CUSBMfcTestDlg::OnBnClickedButton1()
    {
    	// TODO: 在此添加控件通知处理程序代码
    	m_Edit_Send.SetWindowTextA("");
    }
    
    
    void CUSBMfcTestDlg::OnBnClickedButton2()
    {
    	// TODO: 在此添加控件通知处理程序代码
    	m_Edit_Recieve.SetWindowTextA("");;
    }
    
    
    void CUSBMfcTestDlg::OnBnClickedClose()
    {
    	// TODO: 在此添加控件通知处理程序代码
    	MyUsb.DeviceClose();
    }
    
    //send
    void CUSBMfcTestDlg::OnBnClickedSend()
    {
    	// TODO: 在此添加控件通知处理程序代码
    	CString StrSend = "";
    	char SendHex[20] = { 0 };
    	m_Edit_Send.GetWindowTextA(StrSend);
    	Str2Hex(StrSend, SendHex);
    
    	MyUsb.DeviceWrite(SendHex, 8);
    	SetTimer(1, 1000, NULL);
    }
    
    
    void CUSBMfcTestDlg::OnTimer(UINT_PTR nIDEvent)
    {
    	CString StrRec=" ",StrTemp=" ",StrPost=" ";
    	
    	if (nIDEvent==1)
    	{
    		
    		MyUsb.DeviceRead();
    		
    		for (int i=0;i<sizeof(MyUsb.m_rBuffer);i++)
    		{
    			StrTemp.Format("%02x ", MyUsb.m_rBuffer[i]);
    			if ((i+1)%25==0)
    			{
    				StrRec += "\r\n";
    			}
    			StrRec += StrTemp;
    		}
    		m_Edit_Recieve.GetWindowTextA(StrPost);
    		m_Edit_Recieve.SetWindowTextA(StrRec + "\r\n" + StrPost);
    
    		KillTimer(1);
    	}
    }
    
    int CUSBMfcTestDlg::Str2Hex(CString str, char* data)
     {
    	int t, t1;
    	    int rlen = 0, len = str.GetLength();
    	    //data.SetSize(len/2);
    		     for (int i = 0; i < len;)
    		     {
    		         char l, h = str[i];
    		         if (h == ' ')
    			         {
    			             i++;
    			             continue;
    			         }
    		         i++;
    		         if (i >= len)
    			             break;
    		         l = str[i];
    		         t = HexChar(h);
    		         t1 = HexChar(l);
    		         if ((t == 16) || (t1 == 16))
    			             break;
    		         else
    			             t = t * 16 + t1;
    		         i++;
    		         data[rlen] = (char)t;
    		         rlen++;
    		     }
    	     return rlen;
    	 }
    
     char CUSBMfcTestDlg::HexChar(char c)
     {
    	     if ((c >= '0') && (c <= '9'))
    		         return c - 0x30;
    	     else if ((c >= 'A') && (c <= 'F'))
    		         return c - 'A' + 10;
    	     else if ((c >= 'a') && (c <= 'f'))
    		         return c - 'a' + 10;
    	     else
    		        return 0x10;
    	 }

**运行效果：**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIyNjQyMjM5_size_16_color_FFFFFF_t_70][]

# 源代码下载 #

[https://download.csdn.net/download/qq\_22642239/12736524][https_download.csdn.net_download_qq_22642239_12736524]

文章参考：网络资源

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIyNjQyMjM5_size_16_color_FFFFFF_t_70]: /images/20221124/8d894964fa724a4e8e7276e1151be17b.png
[https_download.csdn.net_download_qq_22642239_12736524]: https://download.csdn.net/download/qq_22642239/12736524