This article will show how to communicate between Arduino and Visual Studio through COM (UART) port.
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Arduino - Serial Communication Visual Studio. This article will show how to communicate between Arduino and Visual Studio through COM (UART) port. Full instructions provided 24,218. Things used in this project. Hardware components.
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This article shows how to communicate between Arduino and Visual Studio through COM (UART) port.
(1) Arduino will send data to the Visual Studio program:
(2) Visual Studio program will send data to Arduino. Arduino receives it, then feed it back to Visual Studio program.
Overview of steps:
1. Hardware connection2. Arduino program3. Visual Studio program
1. Hardware connection
2. Arduino program
Make a program for Arduino. At start up, Arduino will send a string (a sentence) every 0.5 sec. This will stop when User sends data (string) to Arduino, then Arduino will send it back to User. In this case, User is Visual Studio program (in part 3).
The code can be downloadhere - Google share
3. Visual Studio program
Make a windows application ? save it.
Add a button, textbox and label to the Form (taken from Toolbox in the left):
Click on button, textbox and label to see Properties in the Toolbox in the right. Remember the name of each item to program in a latter section.
Add components 'serial Port' and 'timer':
Also, see properties to know the name each item. Remember to rename 'serialPort1' ? 'Portname' to COM-Port of Arduino (this case is COM4)
Programming works:The whole code of Visual Studio program can be downloaded here - Google share
(1) Double click to Form1 ? input the following code.Meaning: open (Arduino) COM-Port and start timer1
(2) Double click to Button1 ? input the following code.Meaning: send string from textBox1 to (Arduino) COM-Port
(3) Double click to timer1 ? input the following code.Meaning: every time timer1 ticks (it will tick every 0.1s ? setting in 'Interval' of Properties of timer1), label1 will update information
(4) Click to serialPort1 ? see at Properties toolbox ? click at 'Event' icon ? double click at 'DataReceived'.
Then input the following code.
Meaning: read COM-Port data at every time receiving ? save it to '
mStr
'Auxiliary code:
(1) Meaning: when Form1 is closed ? close COM-Port and stop timer1
(2) Meaning: make global variable '
mStr
'After all, click icon 'Local Window Debugger' to build and run the program.
If everything runs smoothly, a window form will appear (note: Arduino should be connected to computer through COM4 with the program as in Step2).
At result (1): Form1 will show results from Arduino.
At result (2): Form1 will send data to Arduino, then receive it after Arduino sends it.
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engineer2you
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March 11, 2017Write a comment
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I am having a serial communication problem between Arduino and Visual Basic 2010.
Arduino sends strings to the program in Visual Basic 2010. A TextBox shows the data received from the Arduino.
The problem is that from the second time that the Arduino sends data to the Visual Basic 2010, the same data comes splited. For example, the Arduino is sending '1234'. The first time, the TextBox displays '1234'. But from the second time, the TextBox does not display '1234', but '34' only and so on. I wanted the Visual Basic 2010 program to constantly receive '1234' and not split the data.
Here is the Arduino Code.
Here is the VB 2010 code:
Can someone please help me solve this problem? Thank you for your attention!
Best Regards.