//======================================================================
//函数名称：frm_uart_Load
//函数返回：无
//参数说明：无
//功能概要：窗体加载事件，窗体加载时自动调用
//======================================================================
private void frm_uart_Load(object sender, EventArgs e)
{
//（1）变量申明
string com;
//（1）设置允许跨线程操作UI控件
System.Windows.Forms.Control.CheckForIllegalCrossThreadCalls = false;
//（2）获得主页面窗体
fmain = (frm_main)this.MdiParent;
//（3）更新状态提示信息
fmain.lbl_status.Text = "运行状态：frm_uart_Load函数开始，寻找终端节点...";
//（4）调用pcNode类中的函数，寻找下位机，并更新设备连接状态信息
if (uart != null && uart.IsOpen)
{
uart.close();
}
com = pcNode.findPCNode();
uart = pcNode.PCNode_Uart;
fmain.lbl_status.Text = "运行状态：找到" + com;
lbl_uart_state.Text = com;
//（5）绑定DataReceived事件(即串口接收中断处理函数）
if (uart != null)
{
uartPort = uart.port;
uartPort.DataReceived += new System.IO.Ports.SerialDataReceivedEventHandler(this.uartPort_recvData);
uart.setReceInt(500); //相当于关闭串口中断
this.btn_autoUpdate.Enabled = true;
}
//（6）修改其他提示信息
fmain.lbl_protocal.Text = "协议：串口";
fmain.lbl_protocalinfo.Text = "协议信息：端口" + com + ",波特率9600";
}
//======================================================================
//函数名称：rdo_uart_CheckedChanged
//函数返回：无
//参数说明：无
//功能概要：点击“串口更新”单选按钮，显示串口更新页面并使用串口方式连接终端
//======================================================================
private void rdo_uart_CheckedChanged(object sender, EventArgs e)
{
//（1）变量申明
string com;
//（2）若串口更新未选中，直接退出
if (this.rdo_uart.Checked == false)
{
return;
}
//（3）串口更新页面显现
this.pnl_uart.Visible = true;
fmain.lbl_mainstatus.Text = "运行状态：选择串口更新";
//（4）寻找并连接终端
if (uart != null && uart.IsOpen)
{
uart.close();
}
pcNode = new PCNode();//pc节点初始化
com = pcNode.findPCNode();
uart = pcNode.PCNode_Uart;
this.lbl_uartstate.Text = com;
//（5）绑定DataReceived事件(即串口接收中断处理函数）
if (uart != null)
{
//（5.1）连接串口成功
uartPort = uart.port;
uartPort.DataReceived -= new System.IO.Ports.SerialDataReceivedEventHandler(this.uartPort_recvData); //先移除委托函数，防止多次触发
uartPort.DataReceived += new System.IO.Ports.SerialDataReceivedEventHandler(this.uartPort_recvData);
uart.setReceInt(500); //相当于关闭串口中断
this.btn_autoUpdate.Enabled = true; //允许串口更新操作
//修改主页面提示信息
this.lbl_uartstate.Text = "成功连接" + com;
fmain.lbl_mainstatus.Text = "运行状态：找到" + com;
fmain.lbl_protocal.Text = "协议：串口";
fmain.lbl_protocalinfo.Text = "协议信息：端口" + com + ",波特率115200";
}
else
{
//（5.2）连接串口失败
this.btn_autoUpdate.Enabled = false; //禁止串口更新操作
//修改主页面提示信息
fmain.lbl_mainstatus.Text = "运行状态：未成功连接终端，" + com;
fmain.lbl_protocal.Text = "协议：";
fmain.lbl_protocalinfo.Text = "协议信息：";
}
}
//======================================================================
//函数名称：btn_uartCheck_Click
//函数返回：无
//参数说明：无
//功能概要：“重新连接”按钮点击事件，重新连接终端
//======================================================================
private void btn_uartCheck_Click(object sender, EventArgs e)
{
//（1）变量申明
string com;
//（2）提示重新连接串口
fmain.lbl_mainstatus.Text = "运行状态：单击“重新连接”按钮...";
//（3）重新遍历串口，寻找终端
if (uart != null && uart.IsOpen)
{
uart.close();
}
pcNode = new PCNode();//pc节点初始化
com = pcNode.findPCNode();
uart = pcNode.PCNode_Uart;
this.lbl_uartstate.Text = com;
//（4）绑定DataReceived事件(即串口接收中断处理函数）
if (uart != null)
{
//（4.1）连接串口成功
uartPort = uart.port;
uartPort.DataReceived -= new System.IO.Ports.SerialDataReceivedEventHandler(this.uartPort_recvData); //先移除委托函数，防止多次触发
uartPort.DataReceived += new System.IO.Ports.SerialDataReceivedEventHandler(this.uartPort_recvData);
uart.setReceInt(500); //相当于关闭串口中断
this.btn_autoUpdate.Enabled = true; //允许串口更新操作
//修改主页面提示信息
this.lbl_uartstate.Text = "成功连接" + com;
fmain.lbl_mainstatus.Text = "运行状态：找到" + com;
fmain.lbl_protocal.Text = "协议：串口";
fmain.lbl_protocalinfo.Text = "协议信息：端口" + com + ",波特率115200";
}
else
{
//（4.2）连接串口失败
this.btn_autoUpdate.Enabled = false; //禁止串口更新操作
//修改主页面提示信息
fmain.lbl_mainstatus.Text = "运行状态：未成功找到串口，" + com;
fmain.lbl_protocal.Text = "协议：";
fmain.lbl_protocalinfo.Text = "协议信息：";
}
}