Serial Port Complete - Latest Microcontroller projects

Using .NET’s SerialPort Class

 Char[] textToWrite = new Char[2];

textToWrite[0] = 'h' ;

textToWrite[1] = 'i';

myComPort.Write(textToWrite, 0, 2);

5 

The SerialPort class provides five methods for reading text.

The ReadExisting method returns a String containing all of the characters in

the receive buffer. If the buffer is empty, the method returns an empty String.

ReadExisting is the only read method that doesn’t block until receiving data or a

timeout.

 Dim receivedText as String

receivedText = myComPort.ReadExisting

 String receivedText;

receivedText = myComPort.ReadExisting();

The ReadLine method returns all received data up to a NewLine character:

 Dim receivedText as String

receivedText = myComPort.ReadLine

 String receivedText;

receivedText = myComPort.ReadLine();

The returned String contains everything up to the NewLine. The NewLine

character(s) are removed from the receive buffer and discarded. If the buffer

doesn’t contain a NewLine, the method waits up to the ReadTimeout value and

then raises a timeout exception.

The ReadTo method is like ReadLine but enables defining any value as the

delimiter.

The Read method can copy a specified number of received Chars into a Char

array starting at a specified offset.