diff --git a/include/serial.h b/include/serial.h
index 56a1d65..d421100 100644
--- a/include/serial.h
+++ b/include/serial.h
@@ -9,137 +9,197 @@
 #include <optional>
 #include <thread>
 #include <functional>
+#include <vector>
+#include <format>
 #include "../third/serialib.h"
 
 using namespace std::literals::chrono_literals;
 
-template<typename T >
-concept SupportString = requires{
-    std::is_same_v<T, const char*>;
-    std::is_same_v<T, std::string>;
-};
-
-enum class
-[[maybe_unused]]
-ErrorCode{
-    SUCCESS,
-    TIMEOUT,
-    SETTIMEOUTERROR,
-    WRITEINGERROR,
-    READINGERROR,
-};
-
-class Serial
+namespace serial
 {
-private:
-    serialib ser;
-    const char* endChar = "\r\n";
-    std::function<void(const std::string&)> logCallBack;
 
-public:
-    Serial() = default;
-
-    std::string GetTimeNow(){
-        auto now = std::chrono::system_clock::now();
-        auto now_c = std::chrono::system_clock::to_time_t(now);
-        char buffer[32];
-        ctime_s(buffer, 32, &now_c);
-        return std::string(buffer);
-    }
-
-    template<SupportString T>
-    bool OpenDevice(T PortName, unsigned int bauds)
+    static std::vector<std::string> GetUsbPorts()
     {
-        int code;
-        if constexpr (std::is_same_v<T, std::string>){
-            code = ser.openDevice(PortName.c_str(), bauds);
-        }
-        else{
-            code = ser.openDevice(PortName, bauds);
-        }
-        if(code == 1){
-            return true;
-        }else{
-            return false;
+        std::vector<std::string> portArray;
+        std::string comname;
+        std::string showname;
+        for (int i = 0; i <= 256; i++)
+        {
+            std::format_to(std::back_inserter(comname), "\\\\.\\COM{}", i);
+            std::format_to(std::back_inserter(showname), "COM{}", i);
+            // 创建或者打开一个文件或者I/O设备，如执行成功，则返回文件句柄 INVALID_HANDLE_VALUE 表示出错
+            const HANDLE m_handle =
+                ::CreateFileA(comname.c_str(),                                          
+                             static_cast<DWORD>(GENERIC_WRITE) | GENERIC_READ, 
+                             0U,                                               
+                             nullptr,
+                             OPEN_EXISTING, 
+                             0U,            
+                             nullptr        
+                );
+
+            if (m_handle != INVALID_HANDLE_VALUE)
+            {
+                portArray.push_back(showname);
+                CloseHandle(m_handle);
+            }
+            comname.clear();
+            showname.clear();
         }
+        return portArray;
     }
 
-    void Log(const std::string& log){
-        if(logCallBack){
-            auto msg = GetTimeNow() + " "+ log + "\n";
-            logCallBack(msg);
-        }
-    }
+    template <typename T>
+    concept SupportString = requires {
+        std::is_same_v<T, const char *>;
+        std::is_same_v<T, std::string>;
+    };
 
-    void SetLogCallBack(std::function<void(const std::string&)> callBack){
-        logCallBack = callBack;
-    }
+    enum class
+        [[maybe_unused]] ErrorCode
+    {
+        SUCCESS,
+        TIMEOUT,
+        SETTIMEOUTERROR,
+        WRITEINGERROR,
+        READINGERROR,
+    };
 
-    void CloseDevice(){
-        ser.closeDevice();
-    }
+    class Serial
+    {
+    private:
+        serialib ser;
+        const char *endChar = "\r\n";
+        std::function<void(const std::string &)> logCallBack;
 
-    ~Serial() = default;
+    public:
+        Serial() = default;
 
+        std::string GetTimeNow()
+        {
+            auto now = std::chrono::system_clock::now();
+            auto now_c = std::chrono::system_clock::to_time_t(now);
+            char buffer[32];
+            ctime_s(buffer, 32, &now_c);
+            return std::string(buffer);
+        }
 
-    template<SupportString T>
-    std::optional<std::string> GetAtResponse(T command, int timeout = 50){
-        ser.flushReceiver();
-        std::string reallyCommand;
-        std::string response;
-        if constexpr (std::is_same_v<T, std::string>){
-            reallyCommand = command + endChar;
+        bool IsOpen(){
+            return ser.isDeviceOpen();
         }
-        else{
-            reallyCommand = std::string(command) + endChar;
-        }
-        ser.writeString(reallyCommand.c_str());
-        Log("Send: " + reallyCommand);
-        std::this_thread::sleep_for(10ms);
-        // char buffer[ser.available()] = {0};
-        auto availableSize = ser.available();
-        char* buffer = new char[availableSize+1];
-        std::memset(buffer, 0, availableSize);
-        auto size = ser.readBytes(buffer, availableSize, timeout);
-        if(size > 0){
-            buffer[size] = '\0';
-            response = std::string(buffer);
-            Log("Receive: " + response);
-            delete[] buffer;
-            return response;
-        }
-        delete[] buffer;
-        return std::nullopt;
-    }
 
-    template<SupportString T>
-    bool GetAtUntil(T command, T expect = "OK",int timeout = 50){
-        auto endTime = std::chrono::system_clock::now() + std::chrono::milliseconds(timeout);
-        ser.flushReceiver();
-        std::string reallyCommand;
-        if constexpr (std::is_same_v<T, std::string>){
-            reallyCommand = command + endChar;
-        }
-        else{
-            reallyCommand = std::string(command) + endChar;
-        }
-        ser.writeString(reallyCommand.c_str());
-        Log("Send : " + reallyCommand);
-        while(std::chrono::system_clock::now() < endTime){
-            std::this_thread::sleep_for(10ms);
-            auto availableSize = ser.available();
-            auto buffer = new char[availableSize+1];
-            auto size = ser.readBytes(buffer, availableSize, timeout);
-            auto str = std::string(buffer);
-            delete[] buffer;
-            if(size > 0)
-                Log("Receive: "+str);
-            if(str.find(expect) != std::string::npos){
+        template <SupportString T>
+        bool OpenDevice(T portName, unsigned int bauds = 115200)
+        {
+            std::string reallyPortName;
+            std::format_to(std::back_inserter(reallyPortName), "\\\\.\\{}", portName);
+            if(ser.isDeviceOpen()) return true;
+            int code;
+            code = ser.openDevice(reallyPortName.c_str(), bauds);
+            if (code == 1)
+            {
                 return true;
             }
+            else
+            {
+                return false;
+            }
         }
-        return false;
-    }
-};
 
+        void Log(const std::string &log)
+        {
+            if (logCallBack)
+            {
+                auto msg = GetTimeNow() + " " + log + "\n";
+                logCallBack(msg);
+            }
+        }
+
+        void SetLogCallBack(std::function<void(const std::string &)> callBack)
+        {
+            logCallBack = callBack;
+        }
+        void CloseDevice()
+        {
+            if(!ser.isDeviceOpen()) return;
+            ser.closeDevice();
+        }
+
+        ~Serial() = default;
+
+        template<SupportString T>
+        std::optional<std::string> DelayGetResponse(int delayTime, T command, int timeout = 50){
+            std::this_thread::sleep_for(std::chrono::milliseconds(delayTime));
+            return GetAtResponse(command, timeout);
+        }
+
+        template <SupportString T>
+        std::optional<std::string> GetAtResponse(T command, int timeout = 50)
+        {
+            ser.flushReceiver();
+            std::string reallyCommand;
+            std::string response;
+            if constexpr (std::is_same_v<T, std::string>)
+            {
+                reallyCommand = command + endChar;
+            }
+            else
+            {
+                reallyCommand = std::string(command) + endChar;
+            }
+            ser.writeString(reallyCommand.c_str());
+            Log("Send: " + reallyCommand);
+            std::this_thread::sleep_for(10ms);
+            auto availableSize = ser.available();
+            char *buffer = new char[availableSize + 1];
+            std::memset(buffer, 0, availableSize);
+            auto size = ser.readBytes(buffer, availableSize, timeout);
+            if (size > 0)
+            {
+                buffer[size] = '\0';
+                response = std::string(buffer);
+                Log("Receive: " + response);
+                delete[] buffer;
+                return response;
+            }
+            delete[] buffer;
+            return std::nullopt;
+        }
+
+        template <SupportString T>
+        bool GetAtUntil(T command, T expect = "OK", int timeout = 50)
+        {
+            auto endTime = std::chrono::system_clock::now() + std::chrono::milliseconds(timeout);
+            ser.flushReceiver();
+            std::string reallyCommand;
+            if constexpr (std::is_same_v<T, std::string>)
+            {
+                reallyCommand = command + endChar;
+            }
+            else
+            {
+                reallyCommand = std::string(command) + endChar;
+            }
+            ser.writeString(reallyCommand.c_str());
+            Log("Send : " + reallyCommand);
+            while (std::chrono::system_clock::now() < endTime)
+            {
+                std::this_thread::sleep_for(10ms);
+                auto availableSize = ser.available();
+                auto buffer = new char[availableSize + 1];
+                auto size = ser.readBytes(buffer, availableSize, timeout);
+                buffer[size] = '\0';
+                auto str = std::string(buffer);
+                delete[] buffer;
+                if (size > 0)
+                    Log("Receive: " + str);
+                if (str.find(expect) != std::string::npos)
+                {
+                    return true;
+                }
+            }
+            return false;
+        }
+    };
+}
 #endif // SERIAL_H