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Visual basic interface

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har

Mon Jan 21 2008, 06:45AM

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can anyone help me in building an VB interface with coding and tutorials.
basically how does the communication between the PC and the microcontroller takes plce through VB interface.

Ajay

Mon Jan 21 2008, 10:10AM

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all you need to do is add a MSCOMM component in your project. this has been explained in forum many times i think. Please search it once. you might find it.. for sure..

if not we are all here

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har

har

Tue Jan 22 2008, 08:35AM

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thanks once again, im not yet clear because im not thorough with Visual Basic.i would like to explain my doubt once again by taking the example of the PC remote project:
even in this project there is a form. does this form takes part in the interaction between the microcontroller and PC.
in VOICE INTERACTIVE COLLEGE AUTOMATION SYSTEM PUBLISHED HERE project im intended to enquire attendance of students from phone. so what is the role of VB here.
please kindly help

Ajay

Tue Jan 22 2008, 10:44AM

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As i said you need to add MSCOMM component in your project..
In Visual Basic 6.0: right click the toolbox and select "Components". Check "Microsoft Comm Control 6.0" and click "OK". Place a MSComm control (it looks like a phone) on your form (it will be invisible at runtime). You can name the control if you like, the default name is MSComm1.

For setting up MSComm1 component..

CODE:

    MSComm1.CommPort = COM1        'Define COM port available on PC

    MSComm1.Settings = "9600, N, 8, 1"      '9600 Baudrate, No Parity, 8 bits data, 1 Stopbit.

    MSComm1.InputLen = 1                    'Read 1 character/byte whenever Input property is used.

    MSComm1.InputMode = comInputModeBinary  'Input will retrieve data in array of bytes.

    MSComm1.PortOpen = True                 'Open Serial Port COM1.

To read from serial port...

CODE:

If MSComm1.InBufferCount Then

read_value = MSComm1.Input 'read_value will have whatever is sent to serial port of PC

and to write to serial port..

CODE:

MSComm1.Output = something_to_send

I hope many things are clear now

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MSCOMM VB project serial programming VB COM port programming Visual Basic

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har , pdi33

Ritesh

Thu Jan 24 2008, 01:46AM

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ok
if i want to read the com port only when there is a new data received
by using interrupt
so how can we do that

abbas1707

Thu Jan 24 2008, 03:19AM

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Ritesh
for this u can make use of onComm event.
go to properties of mscomm , set RThreshold to 1.
then use code

CODE:

Private Sub MSComm1_OnComm()

   If (MSComm1.CommEvent = comEvReceive) Then  ' if something received

        Text3.Text = MSComm1.Input 'save it to text3

   End If

End Sub

whenever new data is arrived , onComm event will be generated(like interrupt) and that data will be saved to text3.

A Thousand Miles Journey Starts With a Single Step.

Ritesh

Thu Jan 24 2008, 11:33PM

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THANKS
ANY NEW IDEA TO SAME
BUT FOR DOT NET 2005

Ajay

Fri Jan 25 2008, 12:06AM

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.net is tough.. never used it

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cenadius

Sat Jun 28 2008, 04:47AM

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can i know where to download the visual basic?what is the programming language use in visual basic?

pdi33

Sat Jun 28 2008, 06:40AM

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hi cenadius,
visual basic itself is the programming language

.
It can be installed as an integral part of Microsoft Visual studio or can be installed seperately. It does not have a freeware or shareware version so u have to buy it from microsoft.

* inspired to develop,developing to inspire *