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Today , 2007
May 2nd, 2008

Programming in Visual C++ 6 to connect with I/O Parallel Port

I have already mentioned the content about C, C++, connecting with PC Port. It’s not too hard. It’s hard at graphics that we write to put together with using, especially program ran on DOS. In this present, programming as Visual is populating because it can be GUI conveniently and not too hard. So, I try to use Microsoft Visual Basic 6 that is in Microsoft Visual Studio 6, for function and step of programming code for connecting port is not much because wizard program of MS VC++6, is created all for us.

In this program, we will use file conio.h that is include file for using function _outp() and _inp()

In this section, I will do as explanation with pictures (Visual Learning), controlling with messages and the arrange of number shown because if you write explanation as the last contexts, you will be hard to understand. Read the rest of this entry »

May 2nd, 2008

C++ communicate Serial Port as interrupt

It’s C/C++ in programming to communicate with Serial Port or comport (RS-232). The program I recommend here can communicate between two computers that can send message to each other as interrupt.

For here, we will use Borland C as complier, but you will see me use // that I make for programming explanation. There will be code for reference inter like the following,

Intervector –> use setvect()function for setting the value of IRQ

Intervector –> use getvect()function for the value of IRQ

Intervector –> use for setting of Programmable Interrrupt Controller

Intervector –> use for setting in order to cancel using intervector

Comm Setting –> will use the value in setting rate of Baud rate, the number of bit in transferring data, stop bit, control register FIFO, open DTR-RTS-OUT2. Read the rest of this entry »

May 1st, 2008

Creating DLL file by Borland Delphi, connecting IO Parallel Port

As we know that VB can’t program to connect through Parallel Port directly. In the book, there will be explanation that we create DLL files that can write by using whatever language that has the function connecting to port. This website I have ever presented programming by C++, using Inp function for getting value along port and out is sending value out along port.

So now, we will introduce creating DLL file (Dynamic LInk LIbrary) by Borland Delphi, using Assembly programming to help for connecting through port by using the function of Assembly.

IN AL,DX

Get value at port’s position according to value in DX that is kept at AL

OUT DX,AL

Send value in AL to port’s position according to value in DX

Read the rest of this entry »

April 30th, 2008

Programming in Visual Basic to connect modem by using MSComm6

As I mention about modem, it is modem for internet. Usually, working to connect with modem will have processed program for use, but if experiment for knowledge for one who like programming, it will be useful. It can apply for many.

 

This article will be the fundamental of step of programming and protocol command that is used for Dial-Up Phone, so we begin to know about protocol of modem first.

 

The protocol for connecting with modem

 

For connecting with modem, will have command according to standard of industry that produce modem, is protocol called AT Command in order to send command for controlling or get data from modem. Maybe, there is different command; we can see the form of command from manual of each modem that is bought. For command that is sent to control at modem that we will program, it has AT Command that must be used in the followings, Read the rest of this entry »

April 29th, 2008

Programming in Visual Basic to control through network part 4

We have got to know the contents about sending message through TCP/IP. So, we may understand how to use Winsock to connect via TCP/IP. So now, we program in order to send via data, so, we have to firstly make understanding by dividing data file into 2 types in the following.
•    Sequential File
•    Random File
In this content, we mention how to manage file as Random File that has more advantage than Sequential File. It can be quickly opened by not arranging data as Sequential File and enter to Record.  Read the rest of this entry »

February 20th, 2008
February 19th, 2008
February 16th, 2008
February 16th, 2008
February 15th, 2008
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