diff --git a/README.md b/README.md
index f037eb29032f982dda6f61926799c0f6ac94c452..54c879ec6fd041b386514d57c46c34fe51417073 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,13 @@ GX芯片下载工具，用于连接USB给GX芯片下载固件/调试固件，持
 #### 安装教程
 完善中
 
+#### 更新日志
+1. 2022.07.14 修复设备断连后ISP工具闪退问题
+2. 2022.07.14 更新hidapi库版本
+3. 2022.07.14 修复界面中文乱码问题
+4. 2022.08.01 修复字体加载失败问题，并内置NotoSansSC为默认字体
+5. 2022.08.01 无用代码清理
+
 
 #### 使用说明
 完善中
@@ -22,15 +29,5 @@ GX芯片下载工具，用于连接USB给GX芯片下载固件/调试固件，持
 4.  新建 Pull Request
 
 
-#### 特技
-
-1.  使用 Readme\_XXX.md 来支持不同的语言，例如 Readme\_en.md, Readme\_zh.md
-2.  Gitee 官方博客 [blog.gitee.com](https://blog.gitee.com)
-3.  你可以 [https://gitee.com/explore](https://gitee.com/explore) 这个地址来了解 Gitee 上的优秀开源项目
-4.  [GVP](https://gitee.com/gvp) 全称是 Gitee 最有价值开源项目，是综合评定出的优秀开源项目
-5.  Gitee 官方提供的使用手册 [https://gitee.com/help](https://gitee.com/help)
-6.  Gitee 封面人物是一档用来展示 Gitee 会员风采的栏目 [https://gitee.com/gitee-stars/](https://gitee.com/gitee-stars/)
-
-
 #### 致谢
 1. 感谢hidapi
\ No newline at end of file
diff --git a/fonts/NotoSansSC-Regular.otf b/fonts/NotoSansSC-Regular.otf
new file mode 100644
index 0000000000000000000000000000000000000000..d350ffa79e30636b1287ba64bd46f083a7af0d4a
Binary files /dev/null and b/fonts/NotoSansSC-Regular.otf differ
diff --git a/hidapi/hidapi.dll b/hidapi/hidapi.dll
index 667ebc695a6753f63ae4dbd94f5aa38b74c458ae..8c78d7843c6753452c206de53b7ee8a86cbb6eec 100644
Binary files a/hidapi/hidapi.dll and b/hidapi/hidapi.dll differ
diff --git a/hidapi/hidapi.h b/hidapi/hidapi.h
index 3a2dab46e25de204f40480b13d6c839c731fee52..959c9122ab5da305c3d0048091ef53161d0f980d 100644
--- a/hidapi/hidapi.h
+++ b/hidapi/hidapi.h
@@ -5,9 +5,9 @@
  Alan Ott
  Signal 11 Software
 
- 8/22/2009
+ libusb/hidapi Team
 
- Copyright 2009, All Rights Reserved.
+ Copyright 2022, All Rights Reserved.
 
  At the discretion of the user of this library,
  this software may be licensed under the terms of the
@@ -48,18 +48,40 @@
 
 	@ingroup API
 */
-#define HID_API_VERSION_MINOR 11
+#define HID_API_VERSION_MINOR 12
 /** @brief Static/compile-time patch version of the library.
 
 	@ingroup API
 */
-#define HID_API_VERSION_PATCH 2
+#define HID_API_VERSION_PATCH 0
 
 /* Helper macros */
 #define HID_API_AS_STR_IMPL(x) #x
 #define HID_API_AS_STR(x) HID_API_AS_STR_IMPL(x)
 #define HID_API_TO_VERSION_STR(v1, v2, v3) HID_API_AS_STR(v1.v2.v3)
 
+/** @brief Coverts a version as Major/Minor/Patch into a number:
+	<8 bit major><16 bit minor><8 bit patch>.
+
+	This macro was added in version 0.12.0.
+
+	Convenient function to be used for compile-time checks, like:
+	#if HID_API_VERSION >= HID_API_MAKE_VERSION(0, 12, 0)
+
+	@ingroup API
+*/
+#define HID_API_MAKE_VERSION(mj, mn, p) (((mj) << 24) | ((mn) << 8) | (p))
+
+/** @brief Static/compile-time version of the library.
+
+	This macro was added in version 0.12.0.
+
+	@see @ref HID_API_MAKE_VERSION.
+
+	@ingroup API
+*/
+#define HID_API_VERSION HID_API_MAKE_VERSION(HID_API_VERSION_MAJOR, HID_API_VERSION_MINOR, HID_API_VERSION_PATCH)
+
 /** @brief Static/compile-time string version of the library.
 
 	@ingroup API
@@ -369,6 +391,8 @@ extern "C" {
 
 		/** @brief Get a input report from a HID device.
 
+			Since version 0.10.0, @ref HID_API_VERSION >= HID_API_MAKE_VERSION(0, 10, 0)
+
 			Set the first byte of @p data[] to the Report ID of the
 			report to be read. Make sure to allow space for this
 			extra byte in @p data[]. Upon return, the first byte will
diff --git a/hidapi/hidapi.lib b/hidapi/hidapi.lib
index 0d0546282abc2f3b196dfe0c54616fae08f1e3e3..a028cee71212c2668a27e255ce52b300f49ce4bf 100644
Binary files a/hidapi/hidapi.lib and b/hidapi/hidapi.lib differ
diff --git a/hidapi/hidapi.pdb b/hidapi/hidapi.pdb
new file mode 100644
index 0000000000000000000000000000000000000000..4d00c019de4e47995a525f156ecf5750a04daf2f
Binary files /dev/null and b/hidapi/hidapi.pdb differ
diff --git a/hidapi/hidapi_winapi.h b/hidapi/hidapi_winapi.h
new file mode 100644
index 0000000000000000000000000000000000000000..884712af867afba1a1c08f3bb41f0ed52ea77ab9
--- /dev/null
+++ b/hidapi/hidapi_winapi.h
@@ -0,0 +1,58 @@
+/*******************************************************
+ HIDAPI - Multi-Platform library for
+ communication with HID devices.
+
+ libusb/hidapi Team
+
+ Copyright 2022, All Rights Reserved.
+
+ At the discretion of the user of this library,
+ this software may be licensed under the terms of the
+ GNU General Public License v3, a BSD-Style license, or the
+ original HIDAPI license as outlined in the LICENSE.txt,
+ LICENSE-gpl3.txt, LICENSE-bsd.txt, and LICENSE-orig.txt
+ files located at the root of the source distribution.
+ These files may also be found in the public source
+ code repository located at:
+        https://github.com/libusb/hidapi .
+********************************************************/
+
+/** @file
+ * @defgroup API hidapi API
+ *
+ * Since version 0.12.0, @ref HID_API_VERSION >= HID_API_MAKE_VERSION(0, 12, 0)
+ */
+
+#ifndef HIDAPI_WINAPI_H__
+#define HIDAPI_WINAPI_H__
+
+#include <guiddef.h>
+
+#include "hidapi.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+		/** @brief Get the container ID for a HID device.
+
+			Since version 0.12.0, @ref HID_API_VERSION >= HID_API_MAKE_VERSION(0, 12, 0)
+
+			This function returns the `DEVPKEY_Device_ContainerId` property of
+			the given device. This can be used to correlate different
+			interfaces/ports on the same hardware device.
+
+			@ingroup API
+			@param dev A device handle returned from hid_open().
+			@param guid The device's container ID on return.
+
+			@returns
+				This function returns 0 on success and -1 on error.
+		*/
+		int HID_API_EXPORT_CALL hid_winapi_get_container_id(hid_device *dev, GUID *container_id);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/main.cpp b/main.cpp
index a87d5ba0573ed269175a2679d7fcbcb3d1df64ac..78fb9faa137e59269e76ce147fbda66e60a3373a 100644
--- a/main.cpp
+++ b/main.cpp
@@ -31,13 +31,30 @@ int main(int argc, char *argv[])
 {
     QApplication a(argc, argv);
     MainWindow w;
-    QString strFont0 =  loadFontFamilyFromFiles("fonts\\FangZhengHeiTiJianTi.ttf");
+    // Fixed font loads failed. (1/8 is a good day:D)
+    // When you compile this project, you can see this file will be appended to resources.
+    // Also you should do more steps when error above reproducing:
+    // 1.Download the .ttf file
+    // 2.Add qrc prefix(file: qrc.qrc).
+    //<RCC>
+    //  <qresource prefix="/img">
+    //    <file>favicon.ico</file>
+    // </qresource>
+    // <qresource prefix="/fonts">
+    //      <file>your-font-file.ttf</file>
+    //  </qresource>
+    // </RCC>
+    // 3.Add your file downloaded.
+    // 4.Good LUCK :D
+    QString strFont0 =  loadFontFamilyFromFiles(":/fonts/fonts/NotoSansSC-Regular.otf");
     qDebug() << "strFont0 is: " << strFont0;
-    a.setFont(strFont0);
-    QFont font;
-    font.setFamily(strFont0);
-    a.setFont(font);
-    qApp->setFont(font);
+    if(strFont0!=""&&!strFont0.isNull()&&!strFont0.isEmpty()){
+        a.setFont(strFont0);
+        QFont font;
+        font.setFamily(strFont0);
+        a.setFont(font);
+        qApp->setFont(font);
+    }
     w.show();
     return a.exec();
 }
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 56ae620fbe3d5a2bc18c115518feb107d0454ebf..fcfa0c5fa4edaa40c5723ea1235b45cf19996063 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -1,6 +1,7 @@
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
-#include <QRegExpValidator>
+//#include <QRegExpValidator>
+#include <QRegularExpressionValidator>
 #include <QTextBlock>
 
 MainWindow::MainWindow(QWidget *parent)
@@ -18,7 +19,7 @@ MainWindow::MainWindow(QWidget *parent)
     myusbthread->vid = DEFAULT_VENDOR_ID;
     myusbthread->pid = DEFAULT_PRODUCT_ID;
     myusbthread->start();
-    qDebug() << myusbthread->vid << "|" << myusbthread->pid << endl;
+    qDebug() << myusbthread->vid << "|" << myusbthread->pid << Qt::endl;
     hid_device_list = myusbthread->get_device_list();
     device_nums = hid_device_list.size();
     ui->comboBox_device->clear();
@@ -115,14 +116,14 @@ void MainWindow::usbdisconnect()
     qDebug() << "usbdisconnect";
     hid_isopen = false;
     refresh_button();
-    ui->textEdit_information->append(QString::fromLocal8Bit("设备已断开"));
+    ui->textEdit_information->append(QString::fromUtf8("设备已断开"));
 }
 
 void MainWindow::usbsenderror()
 {
     qDebug() << "usbsenderror";
     myusbthread->pause_thread();
-    //QMessageBox::warning(this,QString::fromLocal8Bit("错误"),QString::fromLocal8Bit("USB发送数据异常"),QMessageBox::Ok);
+    //QMessageBox::warning(this,QString::fromUtf8("错误"),QString::fromUtf8("USB发送数据异常"),QMessageBox::Ok);
 }
 
 void MainWindow::sender_update()
@@ -157,7 +158,7 @@ void MainWindow::sender_update()
                     send_data(WRITE16_IN_PC_TO_MCU, gen_data);
                 }
                 refresh_button();
-                ui->textEdit_information->append(QString::fromLocal8Bit("下载成功:") + QDateTime::currentDateTime().toString("hh:mm:ss.zzz"));
+                ui->textEdit_information->append(QString::fromUtf8("下载成功:") + QDateTime::currentDateTime().toString("hh:mm:ss.zzz"));
 #endif
             }
         }
@@ -189,7 +190,7 @@ void MainWindow::sender_update()
                     Delay_MSec(30);
                     check_count = 0;
 #ifdef DOWNLOAD_AND_CHECK
-                    ui->textEdit_information->append(QString::fromLocal8Bit("下载成功,正在校验:") + QDateTime::currentDateTime().toString("hh:mm:ss.zzz"));
+                    ui->textEdit_information->append(QString::fromUtf8("下载成功,正在校验:") + QDateTime::currentDateTime().toString("hh:mm:ss.zzz"));
                     check_data();
 #else
                     download_end_count = 0;
@@ -215,10 +216,10 @@ void MainWindow::sender_update()
                     }
                     downloading = false;
                     refresh_button();
-                    ui->textEdit_information->append(QString::fromLocal8Bit("下载成功:") + QDateTime::currentDateTime().toString("hh:mm:ss.zzz"));
+                    ui->textEdit_information->append(QString::fromUtf8("下载成功:") + QDateTime::currentDateTime().toString("hh:mm:ss.zzz"));
                     if(1)
                     {
-                        ui->textEdit_information->append(QString::fromLocal8Bit("运行程序..."));
+                        ui->textEdit_information->append(QString::fromUtf8("运行程序..."));
                         QByteArray gen_data;
                         gen_data.append((char)0x01);
                         send_data(RESET_MCU_MCU_TO_PC, gen_data);
@@ -262,7 +263,7 @@ void MainWindow::usbreceivedata(const QByteArray recv_data)
         QString Flash_ID = "0x" + recv_data.mid(16,2).toHex(0);
         QString USB_ID = "0x" + recv_data.mid(18,6).toHex(0);
 //        ui->textEdit_information->append(tr("mtlink_version :%1").arg(mtlink_version));
-        ui->textEdit_information->append(QString::fromLocal8Bit("找到可操作设备：")+tr("%1").arg(MCU_ID));
+        ui->textEdit_information->append(QString::fromUtf8("找到可操作设备：")+tr("%1").arg(MCU_ID));
 //        ui->textEdit_information->append(tr("Flash_ID :%1").arg(Flash_ID));
 //        ui->textEdit_information->append(tr("USB_ID :%1").arg(USB_ID));
     }
@@ -283,14 +284,14 @@ void MainWindow::usbreceivedata(const QByteArray recv_data)
 
             if(read_data.left(flash_data.size()) != flash_data)
             {
-                ui->textEdit_information->append(QString::fromLocal8Bit("数据校验失败,请重新下载！") + QDateTime::currentDateTime().toString("hh:mm:ss.zzz"));
+                ui->textEdit_information->append(QString::fromUtf8("数据校验失败,请重新下载！") + QDateTime::currentDateTime().toString("hh:mm:ss.zzz"));
                 //ui->textEdit_information->append("尾部数据校验失败,请重新下载！" + QDateTime::currentDateTime().toString("hh:mm:ss.zzz"));
                 QTimer::singleShot(10, this, SLOT(redownload_data()));
                 return;
             }
             if(read_data.right(read_data.size()-flash_data.size()) != hex_parser.flash_end_data.left(read_data.size()-flash_data.size()))
             {
-                ui->textEdit_information->append(QString::fromLocal8Bit("数据校验失败,请重新下载！") + QDateTime::currentDateTime().toString("hh:mm:ss.zzz"));
+                ui->textEdit_information->append(QString::fromUtf8("数据校验失败,请重新下载！") + QDateTime::currentDateTime().toString("hh:mm:ss.zzz"));
                 //ui->textEdit_information->append("尾部数据校验失败,请重新下载！" + QDateTime::currentDateTime().toString("hh:mm:ss.zzz"));
                 //error download
                 QTimer::singleShot(10, this, SLOT(redownload_data()));
@@ -298,7 +299,7 @@ void MainWindow::usbreceivedata(const QByteArray recv_data)
             }
             checking_end = false;
             //ui->textEdit_information->append("尾部数据校验成功,下载完成:" + QDateTime::currentDateTime().toString("hh:mm:ss.zzz"));
-            ui->textEdit_information->append(QString::fromLocal8Bit("校验成功,下载完成:") + QDateTime::currentDateTime().toString("hh:mm:ss.zzz"));
+            ui->textEdit_information->append(QString::fromUtf8("校验成功,下载完成:") + QDateTime::currentDateTime().toString("hh:mm:ss.zzz"));
             //WRITE16_IN_PC_TO_MCU 00 20  00 0B
             {
                 QByteArray gen_data;
@@ -335,7 +336,7 @@ void MainWindow::usbreceivedata(const QByteArray recv_data)
             }
             else
             {
-                ui->textEdit_information->append(tr("%1").arg(data_cout) + QString::fromLocal8Bit("校验失败,请重新下载！") + QDateTime::currentDateTime().toString("hh:mm:ss.zzz"));
+                ui->textEdit_information->append(tr("%1").arg(data_cout) + QString::fromUtf8("校验失败,请重新下载！") + QDateTime::currentDateTime().toString("hh:mm:ss.zzz"));
                 qDebug() << "Read Data:" << read_data.toHex(' ');
                 qDebug() << "Flash Data:" << flash_data.toHex(' ');
                 QTimer::singleShot(10, this, SLOT(redownload_data()));
@@ -353,12 +354,12 @@ void MainWindow::on_pushButton_openclose_clicked()
         {
             QString usb_path = ui->comboBox_device->currentData().toString();
             if(usb_path.isEmpty()){
-                QMessageBox::warning(this,"error",QString::fromLocal8Bit("USB打开失败,请检查设备！"),QMessageBox::Ok);
+                QMessageBox::warning(this,"error",QString::fromUtf8("USB打开失败,请检查设备！"),QMessageBox::Ok);
                 return;
             }
             hid_isopen = myusbthread->open_usb(usb_path);
             if(!hid_isopen){
-                QMessageBox::warning(this,"error",QString::fromLocal8Bit("USB打开失败,请检查设备！"),QMessageBox::Ok);
+                QMessageBox::warning(this,"error",QString::fromUtf8("USB打开失败,请检查设备！"),QMessageBox::Ok);
             }
         }
     }
@@ -369,8 +370,8 @@ void MainWindow::on_pushButton_openclose_clicked()
 
 void MainWindow::on_pushButton_OpenFile_clicked()
 {
-    ui->textEdit_information->append(QString::fromLocal8Bit("打开文件..."));
-    QString fileName = QFileDialog::getOpenFileName(this,QString::fromLocal8Bit("打开固件文件"), QDir::currentPath(), QString::fromLocal8Bit("HEX文件(*.hex)"));
+    ui->textEdit_information->append(QString::fromUtf8("打开文件..."));
+    QString fileName = QFileDialog::getOpenFileName(this,QString::fromUtf8("打开固件文件"), QDir::currentPath(), QString::fromUtf8("HEX文件(*.hex)"));
     qDebug()<<"文件名:  "+fileName;
 
     if(fileName.isEmpty())
@@ -381,11 +382,11 @@ void MainWindow::on_pushButton_OpenFile_clicked()
     if(!load_bin)
     {
         QMessageBox::warning(this,"error",hex_parser.error_info,QMessageBox::Ok);
-        ui->textEdit_information->append(fileName+QString::fromLocal8Bit(" 解析失败"));
+        ui->textEdit_information->append(fileName+QString::fromUtf8(" 解析失败"));
         return;
     }
     //ui->textEdit_information->append(fileName+" 解析成功, bin长度:" + tr("%1").arg(hex_parser.bin_data.size()-16));
-    ui->textEdit_information->append(fileName+QString::fromLocal8Bit("成功"));
+    ui->textEdit_information->append(fileName+QString::fromUtf8("成功"));
     refresh_button();
     //ui->pushButton_StartDownload->setEnabled(hid_isopen & load_bin & !downloading);
 }
@@ -402,7 +403,7 @@ void MainWindow::on_pushButton_StartDownload_clicked()
     if(!load_bin)
     {
         QMessageBox::warning(this,"error",hex_parser.error_info,QMessageBox::Ok);
-        ui->textEdit_information->append(ui->lineEdit_FileName->text()+QString::fromLocal8Bit(" 解析失败"));
+        ui->textEdit_information->append(ui->lineEdit_FileName->text()+QString::fromUtf8(" 解析失败"));
         return;
     }
 #if DEBUG_WRITE_BIN_FILE
@@ -654,15 +655,15 @@ void MainWindow::download_data()
         myusbthread->send_data(gen_data.leftJustified(64, 0x00, true));
     }
     sender_timer->start(1);
-    ui->textEdit_information->append(QString::fromLocal8Bit("开始下载：") + QDateTime::currentDateTime().toString("hh:mm:ss.zzz"));
+    ui->textEdit_information->append(QString::fromUtf8("开始下载：") + QDateTime::currentDateTime().toString("hh:mm:ss.zzz"));
 }
 
 void MainWindow::refresh_button()
 {
     if(hid_isopen)
-        ui->pushButton_openclose->setText(QString::fromLocal8Bit("断开连接"));
+        ui->pushButton_openclose->setText(QString::fromUtf8("断开连接"));
     else
-        ui->pushButton_openclose->setText(QString::fromLocal8Bit("连接设备"));
+        ui->pushButton_openclose->setText(QString::fromUtf8("连接设备"));
     ui->pushButton_StartDownload->setEnabled(hid_isopen & load_bin & !downloading);
     ui->pushButton_StartDownloadFlash->setEnabled(hid_isopen & load_bin & !downloading);
     ui->comboBox_device->setEnabled(!hid_isopen & !downloading);
@@ -847,6 +848,6 @@ void MainWindow::on_pushButton_emptyFlash_clicked()
         send_data(WRITEN_FLASH_PC_TO_MCU, gen_data);
     }
     Delay_MSec(30);
-    ui->textEdit_information->append(QString::fromLocal8Bit("擦除数据:") + QDateTime::currentDateTime().toString("hh:mm:ss.zzz"));
+    ui->textEdit_information->append(QString::fromUtf8("擦除数据:") + QDateTime::currentDateTime().toString("hh:mm:ss.zzz"));
 }
 
diff --git a/mainwindow.ui b/mainwindow.ui
index 0412e874419505d8d386dd5375a87f1aa3e8f332..6d2f8f625b64baeacb5d66a76f81e421eb6062f6 100644
--- a/mainwindow.ui
+++ b/mainwindow.ui
@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>440</width>
-    <height>559</height>
+    <width>477</width>
+    <height>601</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -30,7 +30,6 @@
     <property name="font">
      <font>
       <pointsize>14</pointsize>
-      <weight>75</weight>
       <bold>true</bold>
      </font>
     </property>
@@ -53,7 +52,6 @@
     <property name="font">
      <font>
       <pointsize>12</pointsize>
-      <weight>75</weight>
       <bold>true</bold>
      </font>
     </property>
@@ -76,14 +74,13 @@
      <rect>
       <x>300</x>
       <y>141</y>
-      <width>111</width>
+      <width>131</width>
       <height>31</height>
      </rect>
     </property>
     <property name="font">
      <font>
       <pointsize>12</pointsize>
-      <weight>75</weight>
       <bold>true</bold>
      </font>
     </property>
@@ -139,7 +136,6 @@
     <property name="font">
      <font>
       <pointsize>12</pointsize>
-      <weight>9</weight>
       <italic>false</italic>
       <bold>false</bold>
      </font>
@@ -175,14 +171,13 @@
      <rect>
       <x>300</x>
       <y>90</y>
-      <width>111</width>
+      <width>131</width>
       <height>31</height>
      </rect>
     </property>
     <property name="font">
      <font>
       <pointsize>12</pointsize>
-      <weight>75</weight>
       <bold>true</bold>
      </font>
     </property>
@@ -233,7 +228,6 @@
        <property name="font">
         <font>
          <pointsize>12</pointsize>
-         <weight>9</weight>
          <italic>false</italic>
          <bold>false</bold>
         </font>
@@ -260,7 +254,6 @@
        <property name="font">
         <font>
          <pointsize>12</pointsize>
-         <weight>9</weight>
          <italic>false</italic>
          <bold>false</bold>
         </font>
@@ -287,7 +280,6 @@
        <property name="font">
         <font>
          <pointsize>12</pointsize>
-         <weight>9</weight>
          <italic>false</italic>
          <bold>false</bold>
         </font>
diff --git a/qrc.qrc b/qrc.qrc
index 2d5acc11b7b5d889d17e2f2f12f578e6b09eb74a..912d456407423083380381ab4ab9a5aa98302d1b 100644
--- a/qrc.qrc
+++ b/qrc.qrc
@@ -2,4 +2,7 @@
     <qresource prefix="/img">
         <file>favicon.ico</file>
     </qresource>
+    <qresource prefix="/fonts">
+        <file>fonts/NotoSansSC-Regular.otf</file>
+    </qresource>
 </RCC>
diff --git a/usbthread.cpp b/usbthread.cpp
index adbf741ed3cd766bf50e47a52520a3e69330f49b..4f32348e6d0b2caf1a604fdf59aab9b9649a2bdc 100644
--- a/usbthread.cpp
+++ b/usbthread.cpp
@@ -1,5 +1,4 @@
 #include "usbthread.h"
-#include <windows.h>
 #include "mainwindow.h"
 
 #include <iostream>
@@ -73,7 +72,7 @@ void USBThread::pause_thread()
 
     //thread_pause = true;
 
-    //关闭USB
+    //关闭USB，需要判断是否还在线
     if(status == USB_CONNECT){
         qDebug()<<"hid_close";
         hid_close(usbthread_handle);
@@ -179,7 +178,7 @@ void USBThread::run()
                         int res;
                         res = hid_get_serial_number_string(usbthread_handle,str,16);
                         qDebug() << "hid_get_serial_number_string:" << res;
-                        if(res!=0)
+                        if(res==0)
                         {
                            status = USB_DISCONNECT;
                            emit usb_disconnect();
@@ -190,6 +189,7 @@ void USBThread::run()
                 case USB_DISCONNECT:
                 {
                     msleep(100);
+                    //qDebug() << "失去链接";
 //                    /* USB未连接的时候,对实时性要求并不高,避免浪费CPU */
 //                    if(QDateTime::currentMSecsSinceEpoch() - tick < 500 )
 //                        break;