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The fellow programmer that program to connect with computer’s port on Window by using Borland C++ Builder that use the method that I suggested in programming connect to port that is run on DOS. Also, present how to program by MS VC++ 6 for running on Window that is using function of dos.h file, but cannot be used, despite declare #include at the top of program.

First of all, I want to disclaim that I don’t use Borland C++ Builder in programming because I practice just MS VC++ 6 , but trying to search information in the internet , then I find the answer that we have to use in writing function to connect to I/O Port by helping of assembly. I reminded that I used the method of writing in Delphi that you will use it to write within your program or will write as function in binary file. It will be more convenient in using that has how to write like the following, Read the rest of this entry »

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C language is the one of good complier for interface program via Serial Port,Parallel Port,Card I/O 8255 with output devices.

Programming Microsoft Visual C++ 6 communicating Parallel Port

You can notice that the structure of function is like programming by VB because Dll File that is used in VB that is written from C. I will not mention the fundamental of communicating port. Read the rest of this entry »

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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 »

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I present you about programming by C, version that runs on DOS because there is easier explanation than program as visual that runs on Window that you can notice the article about MS VC++ 6 communicating with Parallel Port and also you can write and try to do by yourself. You can use TurboC because just 1 Mb compiler.

From the part 1, I mentioned about communication as interrupt. In this part, I will present you about communication as polling. The working like this, the flow of data will not be smooth. CPU cannot anticipate that when the new data arrive. It will verify the time with getting and sending data by speed rate that is higher than speed rate that send through keyboard. Read the rest of this entry »

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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 »

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After studying about communication with data or controlling output devices through Serial Port. In this part, We will learn about programming by Visual Basic through Serial Port for using programming to communicate with Bus system I2C (Inter Integrated Circuit ). You can find more information here http://www.esacademy.com/faq/i2c/.

Why do you have to use this system? Because there will be communication between IC and Module that can order or communicate in many and a long distance that have receiver and sender, the main module or Master to control all working in the system. For another module that is Slave will be controlled. The working of couple modules in this system, will be controlled by 2 signal lines, they have data line and signal line clock in order to use in setting rhythm of working. For taking devices or modules to connect in this system, it can be done by taking module to parallel, will use pressure level of electrical resource in each module will not be equal. Read the rest of this entry »

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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.

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We can’t program by using Visual Basic, then connecting through Parallel port directly. We have to create DLL (Dynamic LInk LIbrary) file in order to borrow function connecting I/O port of the other languages to use. We can program by using functions that can connect port. In this article, I will present programming by C++ first. For someone who likes to program by Borland Delphi, click here. Let’s begin program DII file by MS VC++6 by using function connect with Input and Output of port like this,

1. _Inp that is function that will read value from input port’s position that has the function like this,

_Inp = read value as byte, we will set function name in order to be use in VB- - - > inpVB

_Inpw = read value as word, we will set function name in order to be used in VB - - - > inpwVB

_Inpd = read value as double words, we will set function name in order to used in VB - - - > inpdwVB Read the rest of this entry »

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As I introduce using MSComm 6 for Phone Dial-Up of modem through com port, this part, let’s use API Function that can use API Viewer to find code.

Start by creating new module file, I recommend to use as module file. From my experience in programming, if there is development or solve program, it will be convenient and easy for development. Read the rest of this entry »

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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 »

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