Serial Port Example

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The following code example demonstrates the use of the SerialPort class to allow two users to chat from two separate computers connected by a null modem cable. In this example, the users are prompted for the port settings and a username before chatting. Arduino MEGA 2560 and Due. Both the MEGA 2560 and Due have 4 serial ports in total. One that connects through a USB port chip to the USB device port on the board and three extra serial ports that connect to pins on one of the pin headers of the board. This serial communication occurs using RX (pin 0) and TX (pin 1) terminal of Arduino. Any kind of data can send through this serial monitor. To read incoming data in Arduino 'Serial.reads ' And 'Serial. ReadString ' are two very useful functions. This to function reads the data which are come to Arduino serial port. The following are code examples for showing how to use serial.Serial.They are extracted from open source Python projects. You can vote up the examples you like or vote down the ones you don't like.

Definition

Inheritance
MarshalByRefObjectMarshalByRefObjectMarshalByRefObjectMarshalByRefObject
SerialPortSerialPortSerialPortSerialPort

Examples

The following code example demonstrates the use of the SerialPort class to allow two users to chat from two separate computers connected by a null modem cable. In this example, the users are prompted for the port settings and a username before chatting. Both computers must be executing the program to achieve full functionality of this example.

Remarks

Use this class to control a serial port file resource. This class provides synchronous and event-driven I/O, access to pin and break states, and access to serial driver properties. Additionally, the functionality of this class can be wrapped in an internal Stream object, accessible through the BaseStream property, and passed to classes that wrap or use streams.

The SerialPort class supports the following encodings: ASCIIEncoding, UTF8Encoding, UnicodeEncoding, UTF32Encoding, and any encoding defined in mscorlib.dll where the code page is less than 50000 or the code page is 54936. You can use alternate encodings, but you must use the ReadByte or Write method and perform the encoding yourself.

You use the GetPortNames method to retrieve the valid ports for the current computer.

If a SerialPort object becomes blocked during a read operation, do not abort the thread. Instead, either close the base stream or dispose of the SerialPort object.

Constructors

SerialPort()SerialPort()SerialPort()SerialPort()

Initializes a new instance of the SerialPort class.

SerialPort(IContainer)SerialPort(IContainer)SerialPort(IContainer)SerialPort(IContainer)

Initializes a new instance of the SerialPort class using the specified IContainer object.

SerialPort(String)SerialPort(String)SerialPort(String)SerialPort(String)

Initializes a new instance of the SerialPort class using the specified port name.

SerialPort(String, Int32)SerialPort(String, Int32)SerialPort(String, Int32)SerialPort(String, Int32)

Initializes a new instance of the SerialPort class using the specified port name and baud rate.

SerialPort(String, Int32, Parity)SerialPort(String, Int32, Parity)SerialPort(String, Int32, Parity)SerialPort(String, Int32, Parity)

Initializes a new instance of the SerialPort class using the specified port name, baud rate, and parity bit.

SerialPort(String, Int32, Parity, Int32)SerialPort(String, Int32, Parity, Int32)SerialPort(String, Int32, Parity, Int32)SerialPort(String, Int32, Parity, Int32)

Initializes a new instance of the SerialPort class using the specified port name, baud rate, parity bit, and data bits.

SerialPort(String, Int32, Parity, Int32, StopBits)SerialPort(String, Int32, Parity, Int32, StopBits)SerialPort(String, Int32, Parity, Int32, StopBits)SerialPort(String, Int32, Parity, Int32, StopBits)

Initializes a new instance of the SerialPort class using the specified port name, baud rate, parity bit, data bits, and stop bit.

Fields

InfiniteTimeoutInfiniteTimeoutInfiniteTimeoutInfiniteTimeout

Indicates that no time-out should occur.

Properties

BaseStreamBaseStreamBaseStreamBaseStream

Gets the underlying Stream object for a SerialPort object.

BaudRateBaudRateBaudRateBaudRate

Gets or sets the serial baud rate.

BreakStateBreakStateBreakStateBreakState

Gets or sets the break signal state.

BytesToReadBytesToReadBytesToReadBytesToRead

Gets the number of bytes of data in the receive buffer.

BytesToWriteBytesToWriteBytesToWriteBytesToWrite

Gets the number of bytes of data in the send buffer.

CanRaiseEventsCanRaiseEventsCanRaiseEventsCanRaiseEvents

Gets a value indicating whether the component can raise an event.

(Inherited from Component)
CDHoldingCDHoldingCDHoldingCDHolding

Gets the state of the Carrier Detect line for the port.

ContainerContainerContainerContainer

Gets the IContainer that contains the Component.

(Inherited from Component)
CtsHoldingCtsHoldingCtsHoldingCtsHolding

Gets the state of the Clear-to-Send line.

DataBitsDataBitsDataBitsDataBits

Gets or sets the standard length of data bits per byte.

DesignModeDesignModeDesignModeDesignMode

Gets a value that indicates whether the Component is currently in design mode.

(Inherited from Component)
DiscardNullDiscardNullDiscardNullDiscardNull

Gets or sets a value indicating whether null bytes are ignored when transmitted between the port and the receive buffer.

DsrHoldingDsrHoldingDsrHoldingDsrHolding

Gets the state of the Data Set Ready (DSR) signal.

DtrEnableDtrEnableDtrEnableDtrEnable

Gets or sets a value that enables the Data Terminal Ready (DTR) signal during serial communication.

EncodingEncodingEncodingEncoding

Gets or sets the byte encoding for pre- and post-transmission conversion of text.

EventsEventsEventsEvents

Gets the list of event handlers that are attached to this Component.

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(Inherited from Component)
HandshakeHandshakeHandshakeHandshake

Gets or sets the handshaking protocol for serial port transmission of data using a value from Handshake.

IsOpenIsOpenIsOpenIsOpen

Gets a value indicating the open or closed status of the SerialPort object.

NewLineNewLineNewLineNewLine

Gets or sets the value used to interpret the end of a call to the ReadLine() and WriteLine(String) methods.

ParityParityParityParity

Gets or sets the parity-checking protocol.

ParityReplaceParityReplaceParityReplaceParityReplace

Gets or sets the byte that replaces invalid bytes in a data stream when a parity error occurs.

PortNamePortNamePortNamePortName

Gets or sets the port for communications, including but not limited to all available COM ports.

ReadBufferSizeReadBufferSizeReadBufferSizeReadBufferSize

Gets or sets the size of the SerialPort input buffer.

ReadTimeoutReadTimeoutReadTimeoutReadTimeout

Gets or sets the number of milliseconds before a time-out occurs when a read operation does not finish.

ReceivedBytesThresholdReceivedBytesThresholdReceivedBytesThresholdReceivedBytesThreshold

Gets or sets the number of bytes in the internal input buffer before a DataReceived event occurs.

RtsEnableRtsEnableRtsEnableRtsEnable

Gets or sets a value indicating whether the Request to Send (RTS) signal is enabled during serial communication.

SiteSiteSiteSite

Gets or sets the ISite of the Component.

(Inherited from Component)
StopBitsStopBitsStopBitsStopBits

Gets or sets the standard number of stopbits per byte.

WriteBufferSizeWriteBufferSizeWriteBufferSizeWriteBufferSize

Gets or sets the size of the serial port output buffer.

WriteTimeoutWriteTimeoutWriteTimeoutWriteTimeout

Gets or sets the number of milliseconds before a time-out occurs when a write operation does not finish.

Methods

Close()Close()Close()Close()

Closes the port connection, sets the IsOpen property to false, and disposes of the internal Stream object.

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CreateObjRef(Type)CreateObjRef(Type)CreateObjRef(Type)CreateObjRef(Type)

Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object.

(Inherited from MarshalByRefObject)
DiscardInBuffer()DiscardInBuffer()DiscardInBuffer()DiscardInBuffer()

Discards data from the serial driver's receive buffer.

DiscardOutBuffer()DiscardOutBuffer()DiscardOutBuffer()DiscardOutBuffer()

Discards data from the serial driver's transmit buffer.

Dispose()Dispose()Dispose()Dispose()

Releases all resources used by the Component.

(Inherited from Component)
Dispose(Boolean)Dispose(Boolean)Dispose(Boolean)Dispose(Boolean)

Releases the unmanaged resources used by the SerialPort and optionally releases the managed resources.

Equals(Object)Equals(Object)Equals(Object)Equals(Object)

Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetHashCode()GetHashCode()GetHashCode()GetHashCode()

Serves as the default hash function.

(Inherited from Object)
GetLifetimeService()GetLifetimeService()GetLifetimeService()GetLifetimeService()

Retrieves the current lifetime service object that controls the lifetime policy for this instance.

(Inherited from MarshalByRefObject)
GetPortNames()GetPortNames()GetPortNames()GetPortNames()

Gets an array of serial port names for the current computer.

GetService(Type)GetService(Type)GetService(Type)GetService(Type)

Returns an object that represents a service provided by the Component or by its Container.

(Inherited from Component)
GetType()GetType()GetType()GetType()

Gets the Type of the current instance.

(Inherited from Object)
InitializeLifetimeService()InitializeLifetimeService()InitializeLifetimeService()InitializeLifetimeService()

Obtains a lifetime service object to control the lifetime policy for this instance.

(Inherited from MarshalByRefObject)
MemberwiseClone()MemberwiseClone()MemberwiseClone()MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
MemberwiseClone(Boolean)MemberwiseClone(Boolean)MemberwiseClone(Boolean)MemberwiseClone(Boolean)

Creates a shallow copy of the current MarshalByRefObject object.

(Inherited from MarshalByRefObject)
Open()Open()Open()Open()

Opens a new serial port connection.

Read(Byte[], Int32, Int32)Read(Byte[], Int32, Int32)Read(Byte[], Int32, Int32)Read(Byte[], Int32, Int32)

Reads a number of bytes from the SerialPort input buffer and writes those bytes into a byte array at the specified offset.

Read(Char[], Int32, Int32)Read(Char[], Int32, Int32)Read(Char[], Int32, Int32)Read(Char[], Int32, Int32)

Reads a number of characters from the SerialPort input buffer and writes them into an array of characters at a given offset.

ReadByte()ReadByte()ReadByte()ReadByte()

Synchronously reads one byte from the SerialPort input buffer.

ReadChar()ReadChar()ReadChar()ReadChar()

Synchronously reads one character from the SerialPort input buffer.

ReadExisting()ReadExisting()ReadExisting()ReadExisting()

Reads all immediately available bytes, based on the encoding, in both the stream and the input buffer of the SerialPort object.

ReadLine()ReadLine()ReadLine()ReadLine()

Reads up to the NewLine value in the input buffer.

ReadTo(String)ReadTo(String)ReadTo(String)ReadTo(String)

Reads a string up to the specified value in the input buffer.

ToString()ToString()ToString()ToString()

Returns a String containing the name of the Component, if any. This method should not be overridden.

(Inherited from Component)
Write(Byte[], Int32, Int32)Write(Byte[], Int32, Int32)Write(Byte[], Int32, Int32)Write(Byte[], Int32, Int32)

Writes a specified number of bytes to the serial port using data from a buffer.

Write(Char[], Int32, Int32)Write(Char[], Int32, Int32)Write(Char[], Int32, Int32)Write(Char[], Int32, Int32)

Writes a specified number of characters to the serial port using data from a buffer.

Write(String)Write(String)Write(String)Write(String)

Writes the specified string to the serial port.

WriteLine(String)WriteLine(String)WriteLine(String)WriteLine(String)

Writes the specified string and the NewLine value to the output buffer.

Events

DataReceivedDataReceivedDataReceivedDataReceived

Indicates that data has been received through a port represented by the SerialPort object.

DisposedDisposedDisposedDisposed

Occurs when the component is disposed by a call to the Dispose() method.

(Inherited from Component)
ErrorReceivedErrorReceivedErrorReceivedErrorReceived

Indicates that an error has occurred with a port represented by a SerialPort object.

PinChangedPinChangedPinChangedPinChanged

Indicates that a non-data signal event has occurred on the port represented by the SerialPort object.

Security

SecurityPermission
for the ability to call unmanaged code. Associated enumeration: UnmanagedCode

Applies to


Hello friends, hope you all are enjoying the start of winter season. By the way, I really hate winter season and I just want to hibernate in this season . 🙂 Well coming to our today’s lecture, my today tutorial, serial port in VB 2010, is actually based on a request made by one of the member on my Facebook Page and as it is a really good topic so i thought to share it.Today we will make a software on Microsoft Visual Basic 2010 in which we will send data through the serial port in VB 2010. In this software we will send the data and also receive it. Simply follow all the given steps carefully and you can easily interface the Serial Port in VB 2010, its a fully working project with code so don’t do any mistake.Moreover check these two complete tutorials on Microsoft Visual Studio 2010 as well, these are quite fascinating.
  • How To Send Email in Microsoft Visual Studio 2010

    • Python 3 Serial Port Example

  • Creating a Database in Microsoft Visual Studio 2010
    • First of all download the Microsoft Visual Basic 2010. The installer can be freely downloaded from Microsoft. After installing the software follow these simple steps. So ,let’s get started with How to use Serial Port in VB 2010:

    How to use Serial Port in VB 2010 ???

    Step 1 : Creating a New Project
  • Open your installed Microsoft Visual Studio 2010 software. The first interface will be something like that :
  • Now click on the New Project and select Windows Form Applications.
  • In the project name box, add name of your project as I have added Serial Port Interface.
  • Click OK and a new window will be opened as shown in below image which contains a blank Form1.
  • In this Form1 we are gonna add our controls buttons etc.
    • Step 2 : Changing Name of Form
  • Now click on the form1 and the properties panel will be open on the right side. Now, in the properties tab shown on the right side change its name to frmMain (for easier identification specially when adding more forms).
  • Also change the text of the form to something you like as Serial Terminal. This will be shown on the title bar of your application.
    • Step 3 : Adding Controls To The Project
  • Lets start to add some controls in our software like buttons,combo box and labels etc.
  • So from the Common Controls tab add two buttons, two combo boxes and two labels into your Form1 and align them as shown below :
  • For Button 1, change the text to Connect and change the name to btnConnect.
  • For Button 2, change the text to Disconnect and change the name to btnDisconnect.
  • For Combo Box 1, change the name to cmbPort.
  • For Combo Box 2, change the name to cmbBaud.
  • For Label 1, change the text to Comm Port.
  • For Label 2, change the text to Baud Rate.

  • Keep the names and texts of same character as i wrote them.
  • They are case sensitive so be careful. I will recommend to just copy paste them.
  • If you make even a one letter mistake the code will not run.
  • btn and cmb are just to remind that they are button and combo box respectively. Its better to do neat programming.

    • Serial Port Example Arduino

    Step 4 : Adding Serial Port & Boxes
  • Now from Container tab, add two Group Boxes in the forum.
  • Change the name of Group Box 1 to Transmit Data.
  • Change the name of Group Box 2 to Received Data.
  • Now add a Text Box and a Button in the Transmit Data Group Box.
  • Change the name of the Button to Send and text to btnSend.
  • Change the name of the Text Box to txtTransmit.
  • Now add a Rich Text Box in the Received Data Box and change its text to rtbReceived.
  • Arrange all these components as shown in the below image :
  • Lastly and i think its the most important part of this tutorial, add a Serial Port Block into your forum. It will appear at the bottom. Don’t change any of its parameters just leave it as it is.
    • Step 5 : Coding Section
  • Now we come to the coding part of our project. If you double click on your forum, it will open a new window something like that :
  • This is the place where we add our code and in other words add functionality to our project, this window is called Code Editor.
  • If you double click on any button or box, its respective code will created in this region automatically.
  • Now what you need to do is copy the below code and paste it in your code editor window.
  • Just remove all the previous code in your Code Editor Window.
  • Here’s the code for Serial Port in VB 2010:
  • After adding the code your Code Editor Window will look something like this one :


    • Step 6 : Compile Your Project
  • After adding all the code, now you are ready to compile your code and run your application.
  • To compile go to Debug -> Build SerialPortInterface and if everything’s going right then your project will pop up.

    • Qt Serial Port Example

  • To test your application, just add some LCD to your serial port or simply short your Rx Tx pins and whatever you send you will receive it.
  • Here’s the image of my final application. I have converted it to .exe file, in my coming tutorials i will tell you how to convert a project to .exe file.

  • The project exe file and the complete code has already been emailed to all our subscribed members.

    • Serial Port Example Android

  • If someone didn’t get it or want to get these files then first Subscribe to Our Newsletter and then post your email here and I will email it to them.

    • So that was all on How to use Serial Port in VB 2010. I hope you guys have enjoyed it and are gonna design it on your own. Take care !!! 🙂

    Serial Port Example C++ Linux


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    Category: Microsoft Visual Studio 2010By Syed Zain Nasir90 Comments

    Author: Syed Zain Nasir

    https://www.theengineeringprojects.com/I am Syed Zain Nasir, the founder of <a href=https://www.TheEngineeringProjects.com/>The Engineering Projects</a> (TEP). I am a programmer since 2009 before that I just search things, make small projects and now I am sharing my knowledge through this platform.I also work as a freelancer and did many projects related to programming and electrical circuitry. <a href=https://plus.google.com/+SyedZainNasir/>My Google Profile+</a>