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dai henry
NA
1
9.3k
Read data from rs232 port
Jul 24 2012 6:15 AM
I have the code as below to get data from weight balance (Model: VIBRA HAW30)
public partial class Form1 : Form
{
string InputData = String.Empty;
System.IO.Ports.SerialPort port = new System.IO.Ports.SerialPort();
delegate void SetTextCallback(string text);
public Form1()
{
InitializeComponent();
port.DataReceived += new System.IO.Ports.SerialDataReceivedEventHandler(port_DataReceived_1);
}
private void Form1_Load(object sender, EventArgs e)
{
if (port.IsOpen)
port.PortName = "COM10";
// try to open the selected port:
try
{
port.PortName = "COM10";
port.BaudRate = 9600;
port.DataBits = 8;
port.Parity = Parity.None;
port.StopBits = StopBits.One;
port.DtrEnable = true;
port.Handshake = Handshake.None;
port.DtrEnable = true;
port.Open();
}
// give a message, if the port is not available:
catch
{
MessageBox.Show("Serial port " + port.PortName +
"cannot be opened!", "RS232 tester", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}
private void button2_Click(object sender, EventArgs e)
{
if (port.IsOpen) port.WriteLine(textBox2.Text);
else MessageBox.Show("Serial port is closed!",
"RS232 tester",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
textBox2.Clear();
}
private void button1_Click(object sender, EventArgs e)
{
port.DataReceived += new System.IO.Ports.SerialDataReceivedEventHandler(port_DataReceived_1);
}
private void port_DataReceived_1(object sender, SerialDataReceivedEventArgs e)
{
InputData = port.ReadExisting();
if (InputData != String.Empty)
{
this.BeginInvoke(new SetTextCallback(SetText), new object[] { InputData });
}
}
private void SetText(string text)
{
this.textBox1.Text += text;
}
}
The result as below, how can I get the weight (? kg)
Please help me,
Thanks, Dai Nguyen Quang
Attachment:
readrs232.rar
Reply
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