c#同时连接两个串口出现问题，请大神帮忙！感谢

weixin_41286215 2018-07-19 09:06:39

namespace e_2016_06_23
{
public partial class Smart_meter : Form
{
string path = "C:\\Users\\Public\\data\\data_logging.txt";
string path_m = "C:\\Users\\Public\\data\\energy_monitoring.txt";

public Smart_meter()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{
String[] input = SerialPort.GetPortNames();
comboBox1.Items.AddRange(input);
comboBox16.Items.AddRange(input);
}

void button1(object sender, EventArgs e)
{
try
{
serialPort1.PortName = comboBox1.Text;
serialPort1.BaudRate = Convert.ToInt32(comboBox2.Text);
serialPort1.DataBits = Convert.ToInt32(comboBox3.Text);
serialPort1.StopBits = (StopBits)Enum.Parse(typeof(StopBits), comboBox4.Text);
serialPort1.Parity = (Parity)Enum.Parse(typeof(Parity), comboBox5.Text);
serialPort1.Open();
progressBar1.Value = 100;
}
catch (Exception err)
{
MessageBox.Show(err.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
void button7_Click(object sender, EventArgs e)
{
try
{
serialPort2.PortName = comboBox16.Text;
serialPort2.BaudRate = Convert.ToInt32(comboBox15.Text);
serialPort2.DataBits = Convert.ToInt32(comboBox13.Text);
serialPort2.StopBits = (StopBits)Enum.Parse(typeof(StopBits), comboBox14.Text);
serialPort2.Parity = (Parity)Enum.Parse(typeof(Parity), comboBox12.Text);
serialPort2.Open();
progressBar2.Value = 100;
}
catch (Exception err)
{
MessageBox.Show(err.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}

private void button3_Click(object sender, EventArgs e)
{
if (serialPort1.IsOpen)
{
string output;
output = textBox2.Text;
serialPort1.Write(output);
textBox2.Text = "";
from_bs_2 = "";
serialPort1.DiscardOutBuffer();
}
}
private void button2_Click(object sender, EventArgs e)
{
if (serialPort1.IsOpen)
{
serialPort1.Close();
progressBar1.Value = 0;
}
}
private void button8_Click(object sender, EventArgs e)
{
if (serialPort2.IsOpen)
{
serialPort2.Close();
progressBar2.Value = 0;
}
}

private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
Thread.Sleep(1000); // important
from_bs_2 += serialPort1.ReadExisting();
Thread.Sleep(1000);
this.Invoke(new EventHandler(showdata));
Thread.Sleep(1000);
}

private void serialPort2_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
Thread.Sleep(1000); // important
from_EM += serialPort2.ReadExisting();
Thread.Sleep(1000);
this.Invoke(new EventHandler(showdata_2));
Thread.Sleep(1000);
textBox1.Text += "laishujule";
}

上面是小弟程序中的一部分，其实特别简单，就是两个serialport通信，小弟之前写的只有一个serialport，那个时候一切正常，没有问题，但是今天用一样的方法加了serialport2之后，发现只有serialport1能用，2不能用，点击后显示连接，但是就是不能读取数据，请大家帮忙，真的是跪谢了！

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