diff --git a/mainwidget.cpp b/mainwidget.cpp
index c42c9b4..71e12ea 100644
--- a/mainwidget.cpp
+++ b/mainwidget.cpp
@@ -36,7 +36,7 @@ MainWidget::MainWidget(QWidget *parent)
     RecvArea->setPalette(pal);
     SendArea = new QTextEdit();
     RecvArea->setFont(QFont(tr("Microsoft YaHei UI"), 10));
-    SendArea->setFont(QFont(tr("Microsoft YaHei UI Light"), 13));
+    SendArea->setFont(QFont(tr("Microsoft YaHei UI Light"), 12));
     SendArea->installEventFilter(this);
 
     //按钮
@@ -50,28 +50,56 @@ MainWidget::MainWidget(QWidget *parent)
     connect(SendButton, QPushButton::clicked, this, SendContent);
     connect(ClearButton, QPushButton::clicked, this, ClearRecv);
 
+    //复选框
+    NewLineBox = new QCheckBox(tr("发送新行"));
+    TimerBox = new QCheckBox(tr("定时发送"));
+
+    connect(NewLineBox, QCheckBox::stateChanged, this, detNewLine);
+    connect(TimerBox, QCheckBox::stateChanged, this, ControlSendTimer);
+
+    //spinbox
+    TimerSpin = new QSpinBox();
+    TimerSpin->setSuffix(tr(" ms"));
+    TimerSpin->setMaximum(1000000);
+    TimerSpin->setValue(1000);
+
     //初始化布局
+    vlayout = new QVBoxLayout();
+    vlayout->addWidget(RecvArea, 7);
+    vlayout->addWidget(SendArea, 2);
+    hlayout = new QHBoxLayout();
+    hlayout->addWidget(NewLineBox, Qt::AlignRight);
+    hlayout->addWidget(TimerBox, Qt::AlignRight);
+    hlayout->addWidget(TimerSpin);
+    hlayout->addWidget(SendButton);
     layout = new QGridLayout(this);
+    layout->addWidget(COMBox, 0, 0, 1, 2);
     layout->addWidget(BaudrateLabel, 1, 0);
     layout->addWidget(StopbitsLabel, 2, 0);
     layout->addWidget(DatabitsLabel, 3, 0);
     layout->addWidget(ParityLabel, 4, 0);
-    layout->addWidget(COMBox, 0, 0, 1, 2);
-    layout->addWidget(BaudrateBox, 1,1);
+    layout->addWidget(BaudrateBox, 1, 1);
     layout->addWidget(StopbitsBox, 2, 1);
     layout->addWidget(DatabitsBox, 3, 1);
     layout->addWidget(ParityBox, 4, 1);
     layout->addWidget(OpenButton, 5, 1);
-    layout->addWidget(SendButton, 5, 2, Qt::AlignRight);
-    layout->addWidget(RecvArea, 0, 2, 3, 1);
-    layout->addWidget(SendArea, 3, 2, 2, 1);
-    layout->addWidget(ClearButton, 0, 3);
+    layout->addLayout(hlayout, 5, 2);
+    //    layout->addWidget(SendButton, 5, 2, Qt::AlignRight);
+    layout->addLayout(vlayout, 0, 2, 5, 1);
+    layout->addWidget(ClearButton, 0, 3, Qt::AlignLeft);
+    layout->setColumnStretch(0, 1);
+    layout->setColumnStretch(1, 1);
+    layout->setColumnStretch(2, 4);
+    layout->setColumnStretch(3, 1);
+
     setLayout(layout);
 
     //计时器 初始化
     CheckTimer = new QTimer(this);
-    connect(CheckTimer, QTimer::timeout, this, CheckSerials);
     CheckTimer->start(1000);
+    SendTimer = new QTimer(this);
+    connect(CheckTimer, QTimer::timeout, this, CheckSerials);
+    connect(SendTimer, QTimer::timeout, SendButton, QPushButton::click);
 
     //初始化串口列表
     CheckSerials();
@@ -146,7 +174,6 @@ void MainWidget::serialOpened()
 
 void MainWidget::serialNotOpened()
 {
-    qDebug()<<"打开失败";
     emit sendStatus(tr("串口打开失败"));
 }
 
@@ -165,7 +192,6 @@ void MainWidget::getRecv(QByteArray recv)
     RecvArea->moveCursor(QTextCursor::End);
     RecvArea->textCursor().insertText(recv);
     RecvArea->selectionChanged();
-//    RecvArea->moveCursor(QTextCursor::End);
 }
 
 void MainWidget::OpenSerial()
@@ -189,9 +215,27 @@ void MainWidget::ClearRecv()
     RecvArea->clear();
 }
 
+void MainWidget::detNewLine(int state)
+{
+    if(state==2)
+        isSendNewLine = true;
+    else if(state == 0)
+        isSendNewLine = false;
+}
+
+void MainWidget::ControlSendTimer(int state)
+{
+    if(state == 0)
+        SendTimer->stop();
+    else if(state == 2)
+        SendTimer->start(TimerSpin->value());
+}
+
 void MainWidget::SendContent()
 {
     QString content = SendArea->toPlainText();
+    if(isSendNewLine)
+        content += "\r\n";
     emit sendData(content);
 }
 
diff --git a/mainwidget.h b/mainwidget.h
index 7506a32..142985f 100644
--- a/mainwidget.h
+++ b/mainwidget.h
@@ -4,12 +4,16 @@
 #include <QWidget>
 #include <QComboBox>
 #include <QGridLayout>
+#include <QVBoxLayout>
+#include <QHBoxLayout>
 #include <QTextEdit>
 #include <QPlainTextEdit>
 #include <QPushButton>
 #include <QTimer>
 #include <QSerialPortInfo>
 #include <QLabel>
+#include <QCheckBox>
+#include <QSpinBox>
 #include <QThread>
 #include "serialcontroller.h"
 
@@ -45,18 +49,26 @@ public slots:
     void OpenSerial();
     void CloseSerial();
     void ClearRecv();
+    void detNewLine(int state);
+    void ControlSendTimer(int state);
 
 private:
     QComboBox *COMBox, *BaudrateBox, *StopbitsBox, *DatabitsBox, *ParityBox;
     QStringList COMList, BaudrateList, StopbitsList, DatabitsList, ParityList;
     QLabel *BaudrateLabel, *StopbitsLabel, *DatabitsLabel, *ParityLabel;
     QGridLayout *layout;
+    QVBoxLayout *vlayout;
+    QHBoxLayout *hlayout;
     QTextEdit *RecvArea, *SendArea;
     QPushButton *OpenButton, *SendButton, *ClearButton;
-    QTimer *CheckTimer;
+    QCheckBox *NewLineBox, *TimerBox;
+    QSpinBox *TimerSpin;
+    QTimer *CheckTimer, *SendTimer;
     SerialController *serialController;
     QThread SerialThr;
 
+    bool isSendNewLine = false;
+
 };
 
 #endif // MAINWIDGET_H
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 79b847b..caa91d9 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -8,7 +8,7 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent),
     setCentralWidget(widget);
     statusbar->showMessage(tr("准备就绪"));
     connect(widget, MainWidget::sendStatus, this, setNewMsg);
-    resize(640, 500);
+    resize(900, 600);
 }
 
 void MainWindow::setNewMsg(QString msg)