diff --git a/deviceservice.cpp b/deviceservice.cpp
index 3c7626b..1e106de 100644
--- a/deviceservice.cpp
+++ b/deviceservice.cpp
@@ -7,11 +7,12 @@
 
 #define WIRING_PIN_LED 4    //GPIO.4
 #define WIRING_PIN_KEY 3    //GPIO.3
+#define Click_Overtime 50
 
 DeviceService::DeviceService(QObject *parent) : QObject(parent)
 {
     key.flag = None;
-    key.lastState = None;
+    key.lastState = KEY_Up;
     m_ledStatus = 0;
     m_keyStatus = 0;
 
@@ -33,13 +34,19 @@ DeviceService::DeviceService(QObject *parent) : QObject(parent)
         ledSet(m_ledStatus);
     });
 
-    timer2.setInterval(10);
+    timer2.setInterval(50);
     timer2.start();
     connect(&timer2,&QTimer::timeout,[=](){
-        quint8 keyStatus = keyReadOnce();
-        if(keyStatus != m_keyStatus){
-            m_keyStatus = keyStatus;
-            qDebug() << "m_keyStatus " << m_keyStatus;
+//        quint8 keyStatus = keyReadOnce();
+//        if(keyStatus != m_keyStatus){
+//            m_keyStatus = keyStatus;
+//            qDebug() << "m_keyStatus " << m_keyStatus;
+//        }
+        key.flag = (KeyFlag)keyDetection();
+        if(key.flag != None){
+            if(key.flag == Click){
+                emit keyClicked();
+            }
         }
     });
 }
@@ -53,6 +60,11 @@ void DeviceService::ledSet(int status)
 #endif
 }
 
+/**
+ * @brief DeviceService::keyReadOnce
+ * 按键按下返回0,按键弹起返回1
+ * @return
+ */
 quint8 DeviceService::keyReadOnce()
 {
 #ifdef Q_OS_LINUX
@@ -63,62 +75,19 @@ quint8 DeviceService::keyReadOnce()
 #endif
 }
 
-//quint8 DeviceService::keyDetection()
-//{
-//    key.flag = None;  //清空按键标志
-//    if ((keyReadOnce() == KEY_Up) && (key.lastState == KEY_Down))
-//    {
-//        uint16_t i = Click_Overtime;
-//        uint16_t j = Press_Overtime;
-//        key.flag = Click;    //先确定按键标志为单击
-//        key.lastState = KEY_Up;
-//        //判断是否为长按
-//        while ((tls_gpio_read(gpio_pin) == KEY_Up)&&(j--))
-//        {
-//            //printf("j = %d\r\n", j);
-//            if (j == 1)
-//            {
-//                KEY3.KEY_Flag = Press; //按键标志为长按
-//                KEY3.KEY_LastState = KEY_Up;
-//                break;
-//            }
-//            delay_ms(50);
-//        }
-//        //在确定标志已经为单击的前提下，判断是否为双击
-//        if (KEY3.KEY_Flag == Click)
-//        {
-//            while (i--)
-//            {
-//                if ((tls_gpio_read(gpio_pin) == KEY_Up))
-//                {
-//                    KEY3.KEY_Flag = Dbl_Click;
-//                    KEY3.KEY_LastState = KEY_Up;
-//                    while (tls_gpio_read(gpio_pin) == KEY_Up);
-//                    break;
-//                }
-//                delay_ms(50);
-//            }
-//        }
-//        //在确定标志为已经为双击的前提下，判断是否为三击
-//        if (KEY3.KEY_Flag == Dbl_Click)
-//        {
-//            while (i--)
-//            {
-//                if (tls_gpio_read(gpio_pin) == KEY_Up)
-//                {
-//                    KEY3.KEY_Flag = Tri_Click;
-//                    KEY3.KEY_LastState = KEY_Up;
-//                    while (tls_gpio_read(gpio_pin) == KEY_Up);
-//                    break;
-//                }
-//                delay_ms(50);
-//            }
-//        }
-//    }
-//    //将按键置为松开状态，以供下一次检测
-//    if (tls_gpio_read(gpio_pin) == KEY_Down)
-//    {
-//        KEY3.KEY_LastState = KEY_Down;
-//    }
-//    return KEY3.KEY_Flag;
-//}
+quint8 DeviceService::keyDetection()
+{
+    key.flag = None;  //清空按键标志
+    quint8 status = keyReadOnce();
+    if ((status == KEY_Down) && (key.lastState == KEY_Up))
+    {
+        uint16_t i = Click_Overtime;
+        while(i--);
+        status = keyReadOnce();
+        if(status == KEY_Down){
+            key.flag = Click;    //先确定按键标志为单击
+        }
+    }
+    key.lastState = status;
+    return key.flag;
+}
diff --git a/deviceservice.h b/deviceservice.h
index 1bb5e44..f22a343 100644
--- a/deviceservice.h
+++ b/deviceservice.h
@@ -17,8 +17,8 @@ typedef enum{
     Press        = (uint8_t)4,
 }KeyFlag;
 
-#define KEY_Up   GPIO_PIN_SET
-#define KEY_Down GPIO_PIN_RESET
+#define KEY_Up   1
+#define KEY_Down 0
 
 typedef struct{
   KeyFlag flag;
@@ -35,11 +35,12 @@ private:
     int m_ledStatus,m_keyStatus;
     QTimer timer1,timer2;
 signals:
+    void keyClicked();
 
 public slots:
     void ledSet(int status);
     quint8 keyReadOnce();
-    //quint8 keyDetection();
+    quint8 keyDetection();
 };
 
 #endif // DEVICESERVICE_H
diff --git a/main.cpp b/main.cpp
index 7b9b052..12a257f 100644
--- a/main.cpp
+++ b/main.cpp
@@ -34,9 +34,12 @@ int main(int argc, char *argv[])
             &w,&MainWidget::onNewPatientMergencyInfo);
     QObject::connect(&websocketService,&WebsocketService::patientMergencyStatusChanged,
             &w,&MainWidget::onPatientMergencyStatusChanged);
+    QObject::connect(&deviceService,&DeviceService::keyClicked,
+            &w,&MainWidget::onKeyClicked);
 
     QObject::connect(&w,&MainWidget::statusChanged,&httpService,&HttpService::updateStatus);
 
+
     w.show();
 //    w.showFullScreen();
 
diff --git a/mainwidget.cpp b/mainwidget.cpp
index 08a9305..49067f5 100644
--- a/mainwidget.cpp
+++ b/mainwidget.cpp
@@ -181,6 +181,12 @@ void MainWidget::onPatientMergencyStatusChanged(QString firstAidId,QString time,
     }
 }
 
+void MainWidget::onKeyClicked()
+{
+//    emit onKeyStart();
+    qDebug() << "Key Clicked";
+}
+
 void MainWidget::addPatientToList(PatientEmergencyInfo *info)
 {
     //1.如果有就删除，以保证同一个病人按两次应该重新开始计时
diff --git a/mainwidget.h b/mainwidget.h
index 4c7e2a2..b9e472b 100644
--- a/mainwidget.h
+++ b/mainwidget.h
@@ -41,6 +41,8 @@ public slots:
     void deletePatientFromList(QString firstAidId);
     void lableScrollDisplay();
 
+    void onKeyClicked();
+
 signals:
     void statusChanged(QString firstAidId,QString status);
 };