CODEWITHSUNDEEP
c#serial-port
Datta
Datta

Reputation: 559

How to check the data received event in serial port C#

I am trying to read/write some data using serial port, 

byte[] txTestData = new byte[] { 0x03, 0x0, 0x01, 0x0};
Serial.Write(txTestData, 0, txTestData.Length);

But I want to read the data only when i receive data from serial port. ,i.e

if(Data received from serial port)
{
   byte[] rxTestResponse = new byte[2];
   Serial.Read(rxTestResponse, 0, 2);
}

Is there any API that tells me the data received event ??

Thanks, Dattatarya

Upvotes: 1

Views: 7319

Answers (1)

Kamil Budziewski
Kamil Budziewski

Reputation: 23117

Yes, there is an API which can tell you when data is received, it's called events. Read more about events here.

Attach event:

mySerialPort.DataReceived += new SerialDataReceivedEventHandler(DataReceivedHandler);

Create handler

private static void DataReceivedHandler(object sender,SerialDataReceivedEventArgs e)
{
     byte[] rxTestResponse = new byte[2];
     Serial.Read(rxTestResponse, 0, 2);
}

Every time SerialPort receives data it will call DataReceived event and your event handler will execute

Upvotes: 4

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