///-----------------------------------------------------------------
/// <summary>
/// 对 象:BtnSCISwitch
/// 事 件:Click
/// 功 能:(1)当开关显示为打开串口(Open SCI),则单击时执行打开串口
/// 操作,并在标签LblSCI中显示选择的串口号与波特率,并在
/// 状态条文本TSSLState中显示当前操作
/// (2)当开关显示为关闭串口(Close SCI),则单击时执行关闭串口
/// 操作,并在标签LblSCI中显示关闭的串口号与波特率,并在
/// 状态条文本TSSLState中显示当前操作
/// 函数调用:(1)SCIInit:串口初始化
/// (2)SCIClose:关闭串口
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
///-----------------------------------------------------------------
private void BtnSCISwitch_Click(object sender, EventArgs e)
{
bool flag;//标记打开是否成功
//根据按钮BtnSCISwitch显示内容执行打开或关闭串口操作
if (this.BtnSCISwitch.Text.CompareTo("打开串口(Open SCI)") == 0)
{
//提示当前正在执行打开串口操作
this.TSSLState.Text = "过程提示:正在打开串口...";
//初始化SCI类对象sci
sci = new SCI(PublicVar.g_SCIComNum, PublicVar.g_SCIBaudRate);
if (sci.SCIOpen())//串口打开成功
{
//设置接收中断处理事件
sci.DataReceived += new System.IO.Ports.SerialDataReceivedEventHandler(this.SCIPort_DataReceived);
//设置每接收到1个字节中断1次
sci.SCIReceInt(1);
//显示打开串口相关信息
this.LblSCI.Text = str + PublicVar.g_SCIComNum + "、" + PublicVar.g_SCIBaudRate + "\n" + msg;
this.BtnSCISwitch.Text = "关闭串口(Close SCI)"; //修改按钮上文字
this.CbSCIComNum.Enabled = false; //禁用[串口选择框]
this.CbSCIBaud.Enabled = false; //禁用[波特率选择框]
//状态上显示结果信息
this.TSSLState.Text = this.TSSLState.Text +
"打开" + PublicVar.g_SCIComNum + "成功!" + "波特率选择：" + PublicVar.g_SCIBaudRate;
this.pictureBox1.Image = SerialPort.Properties.Resources.Run;
this.BtnSCISend.Enabled = true;
}
else//串口打开失败
{
this.TSSLState.Text = this.TSSLState.Text +
"打开" + PublicVar.g_SCIComNum + "失败!";
this.pictureBox1.Image = SerialPort.Properties.Resources.Run_static;
this.BtnSCISend.Enabled = false;
}
}
else if (this.BtnSCISwitch.Text == "关闭串口(Close SCI)")
{
//设置接收中断处理事件
sci.DataReceived -= new System.IO.Ports.SerialDataReceivedEventHandler(this.SCIPort_DataReceived);
//提示当前操作
this.TSSLState.Text = "过程提示:正在关闭串口...";
//执行关闭串口操作,并用Flag返回结果
flag = sci.SCIClose();
if (flag == true)
{
this.LblSCI.Text = str + PublicVar.g_SCIComNum
+ "、" + PublicVar.g_SCIBaudRate + "\n" + msg;
this.BtnSCISwitch.Text = "打开串口(Open SCI)";
//[串口选择框]处于可用状态
this.CbSCIComNum.Enabled = true;
//[波特率选择框]处于可用状态
this.CbSCIBaud.Enabled = true;
this.TSSLState.Text += "关闭" + PublicVar.g_SCIComNum + "成功!";
this.pictureBox1.Image = SerialPort.Properties.Resources.Run_static;
this.BtnSCISend.Enabled = false;
}
else//串口关闭失败
{
this.TSSLState.Text += "关闭" + PublicVar.g_SCIComNum + "失败!";
}
}
}
