Serial Port Complete - Latest Microcontroller projects

Chapter 9

For applications that transfer text, numeric data other than bytes, and logical

values, the SerialPort class includes methods that handle the encoding and

decoding of these data types. For example, an application that wants to send the

text “CMD1” followed by a LF character could store the character codes in a

byte array and write the array to a port:

 Dim dataToSend(4) As Byte

dataToSend(0) = Asc("C")

dataToSend(1) = Asc("M")

dataToSend(2) = Asc("D")

dataToSend(3) = Asc("1")

dataToSend(4) = 10

myComPort.Write(dataToSend, 0, 5)

Table 9-1: Applications can use a variety of methods to write data to a SerialPort object.

9:   

+!  7



SerialPort Write Byte array.

Char array or subarray.

String.

yes

WriteLine String + NewLine.

NewLine only.

yes

WriteByte Byte. yes

BinaryWriter Write Byte, Byte array or subarray, SByte.

Char, Char array or subarray.

String.

Boolean, Decimal, Double, Int16, Int32, Int64,

Single, UInt16, UInt32, UInt64.

yes

StreamWriter Write Char, Char array or subarray.

String, formatted String.

Text representation of Boolean, Decimal,

Double, Int32, Int64, Object, Single, UInt32,

UInt64.

yes

WriteLine Same as Write but with NewLine appended.

NewLine only.

yes