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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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