Serial Port Programming using Visual Basic. Net for Beginners. Hello folks,Visual Basic. Microsoft for the windows platform. One of the cool features of Visual Basic. In this tutorial we are going to use Visual Basic. PCs Serial Port and communicate with an embedded microcontroller like MSP4. MASTERING MICROCONTROLLERS HELPED BY ARDUINO. Clemens valens. Clemens Valens, born in the Netherlands, lives in France since 1997. Technical Manager and Webmaster at. Interfacing Character LCD with PIC Microcontroller using MPLAB X IDE and MPLAB XC8 C Compiler. Our LCD Library functions makes PIC LCD Interfacing simple. The NOKIA 3310 LCD provides a really lowcost solution to add a small graphic display into your project and also good for learning purpose. The LCD is SPI bus. Adapter to connect the DB9 serial port of computers or microcontroller systems to the USB port of printers. This 1. 8m adapter cable has a female 9pin SubD connector. In the first section of our tutorial we will build a simple command line program that would show us how to read and write from the Serial port using Visual Basic. Here we are going to use the Serial. Port Class provided by the dot net framework to access the port using vb. The code may look similar to Serial Programming using C tutorial since we are using the same dotnet framework Sourcecodes All the VB. Gangsta Pat Homicidal Lifestyle here. Git. Hub Page. If you are new to Github Check this article to download code . Creating a Vb. net Project For compiling and running the code we are using Visual Studio IDE from Microsoft. You can also use the opensource Sharpdevelop IDE for running the command line programs. AgfOEWM/0.jpg' alt='8051 Serial String' title='8051 Serial String' />One problem with the latest version of Sharpdevelop IDE 5. Visual GUI builder for Visual Basic. Now double click on the Visual Studio Icon and Create a new Console Project  for Visual Basic as shown below If you select the  Empty Project  option instead of the Console Application ,the Command line window will not be visible while debugging your Project,So stick with the  Console Application  option. After you have pressed the OK button, the IDE will create a file named Module. Project folder as shown below. Serial String' title='8051 Serial String' />You can rename the Module. Serial. Comm. Write  by right clicking on the file in the Solution Explorer and selecting Rename. Download Archimedes 4 Pump Manual Software. A dialog will popup asking you to confirm the action. Press OK Now your file name under your Solution Explorer as well as the Module name on the Source file will be changed to the one specified by you here Serial. Comm. WriteNow you can add your code for controlling the serialport under Sub Main and start Programming. Adding Files to Your Project  and Compiling. Instead of typing your own code under the Sub Main you want to add the downloaded source files from github directly under your Project Tree. You can first delete the IDE created Module. Delete option. Please note that choosing the Delete option would permanently delete your source file from the harddisk,if you just want to exclude the file from compilation just choose Exclude From Project option. Then right click on your Project name and select Add   Existing Item. After adding the files to your Project you can compile them by pressing F5 or by clicking on the Start Button. Compile Time Errors. After compiling the program, if you are getting an Error Message similar to this on the Error Window. Error    1    Sub Main was not found in SerialCommCMDline. JyigXVMuJ4/hqdefault.jpg' alt='8051 Serial String' title='8051 Serial String' />Module. Serial Comm CMDline. Right Click on your Project Name here Serial Comm CMDline on Solution Explorer and Choose Properties Now in the Properties Window,Under  Application    Startup object ,Select the name corresponding to your Module name. In this case, Select Serial. Comm. Writeinstead of Module. Accessing Serial. Port Class using VB. Here we are going to access the Serial. Arduino-Training-in-Chandigarh5-1068x601.jpg' alt='8051 Serial String' title='8051 Serial String' />Port Class from the dot net framework using Visual Basic. Hardware Serial Port. In case your PC Laptop do not have any hardware serial ports as newer models tend to do,you can use a USB to Serial Converter like USB2. SERIAL for communicating with the external  device. Before you can use the Serial. Port class you have to import the dot net namespace corresponding to it. This can be done by using the Imports Keyword as shown below. Imports System          To Access Console. Write. LineImports. System. IO. PortsTo Access the Serial. Port Object. You can find out  Serial ports COM ports both real and virtual ,attached to your PC by going to the Device Manager. You can also find out the serial ports attached to your PC programmatically using the Serial. Port. Get. Port. Names method. The Get. Port. Names method returns an array containing all the COM ports attached to your computer. The COM port names returned by Get. Port. Names method is stored in the Available. Ports array.  A  For Each loop is then used to print the available ports on the command line. You can display the ports connected to your computer by using the following snippet of code. Dim Available. Ports As String Serial. Backgammon Flash Game more. Port. Get. Port. NamesConsole. Write. LineAvailable Ports Dim Port As String. For Each Port In Available. Ports. Console. Write. LinePortNext Port. Configuring the Serial. Port We define My. COMport as an object of type Serial. Port class and then instantiate it using the new keyword. After the object is created we then provide the name of the Serial. Port,Baudrate at which to communicate ,Number of StopStart bits etc. Dim My. COMPort As Serial. Port   My. COMPort New Serial. PortMy. COMPort. Port. Name COM8. Assign the port name to the My. COMPort object. My. COMPort. Baud. Rate 9. Assign the Baudrate to the My. COMPort object. My. COMPort. Parity   Parity. None   Parity bits none  My. COMPort. Data. Bits 8             No of Data bits 8. My. COMPort. Stop. Bits Stop. Bits. One  No of Stop bits 1. Reading and Writing into Serial. Port. Before reading and writing into the serial port we should open a connection using My. COMPort. Open method. After you have successfully opened the connection you can write into the port using My. COMPort. WriteMethod or Read from the port using My. COMPort. Read. Line . After you have completed your transaction you should close the port using  My. COMPort. Close method. Writing into Serial Port. Here is a short snippet of code for writing into serial port. Here we are sending an ASCII A to the Serial Port. The full Source file Serial. Comm. Write. vb  can be downloaded from our Github Page. My. COMPort. Open               Open the port. My. COMPort. WriteA           Write an ascii AMy. COMPort. Close               Close port. Here is a screenshot of   Serial. Comm. Write. vb   running on Windows. Reading from Serial Port. Here is a short snippet of code for Reading from Serial. Port. Here we define a string variable called Data. Received for storing the data send from the microcontroller to the PC. My. COMPort. Read. Line waits till data is received and returns when a new line character n is encountered. The received data is then stored in Data. Received . Please remember to add a new line character to the text string transmitted by  embedded system side. The full Source file  Serial. Comm. Read. vb  can be downloaded from our Github Page. Dim Data. Received As String          To Store the Received Data. My. COMPort. Open                     Open the port. Data. Received My. COMPort. Read. Line Waiting for Data to be send My. COMPort. Close                   Close port. Here is a screenshot of   Serial. Comm. Read. vb   running on Windows. Data received by the PC Hardware Connections If your PC does not have any hardware serial ports you can use any USB to Serial ConvertersI am using USB2. SERIAL. I have interfaced a microcontroller boardMSP4. G2. 55. 3 on Launch Pad to the serial port using a null modem cable like this. You can use any microcontroller of your choice like 8. AVR or ARMLPC2. 14. The Controller waits for a character to be received and lights up the corresponding LED. The code for MSP4. If you want to know how to configure the MSP4. UART you can check this tutorial.