MCU core: The heart of this unit is PIC18F4520 chip (you.Which will indicate that power supply unit is working OK. For convenience I have also included a LED Even if by mistake you supply wrong polarity the thing wont blowĪway. I have used a 1N4007 diode to protect this unit from reverse The function of this unit is to provide a regulated 5v supply Power Supply unit : This part is required in all project.I am explaining in short the parts and their functions. Is the level converter which built around the MAX232
The circuit is common for many other application too. The above image show the schematic of circuit you will need to make. When you have enough knowledge you can replace the Terminal with your own PC This configuration is the simplest setup to test and understand RS232 communication. So any text send by the MCU will be visible on Terminal Screen andĪny keypress you make on the PC keyboard will be send over RS232 to your MCU. A terminal program is used to send and receive On PC we will run a terminal program like In this tutorial we will demonstrate a link betweenĪ PIC18F4520 MCU and a standard PC. RS232 can be used to communicate between a variety of devices. So a total of three wire are required for communication. One more common wire (called GND) is required between two separateĬircuit to enable current flow. Since data is transferredīIT by BIT so we need only a single wire two send data and an another one to That means that data is transferred BIT by BIT at a time.
Two device using a standard called RS232.
New to this I clarify that the motive is to send and receive data between Hello Friends! In this tutorial I will discuss how to practically do a simpleĬommunication over RS232 interface.
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