I've written a small application to test reading serial data from a microcontroller, and for some reason it doesn't seem to be reading anything. I've confirmed using PuTTY and Power Shell that the data is coming in properly from the port being used, at the same baud rate etc. I've confirmed that the port settings in Device Manager are correct. But my app doesn't seem to be reading anything - never reaches the SerialDataReceivedEventHandler. I've tried using both delegate-based and blocking techniques, nothing seems to yield anything. Code below - if someone could point out what I'm doing wrong, I'd appreciate it!
private void btnDoIt_Click(object sender, EventArgs e)
{
serialPort = new SerialPort("COM7", 9600, Parity.None, 8, StopBits.One)
{
Handshake = Handshake.None
};
serialPort.DataReceived += new
SerialDataReceivedEventHandler(port_DataReceived);
// Begin communications
serialPort.Open();
Debug.WriteLine("Port opened");
}
private void port_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
// Show all the incoming data in the port's buffer in the output window
SerialPort sp = (SerialPort)sender;
Debug.WriteLine("data : " + sp.ReadExisting());
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (serialPort.IsOpen)
{
serialPort.Close();
}
}
