Infrared Transceiver 8051 Interfacing

[yttuncel]

Hello everybody,

I am currently busy with a small project that involves Infrared communication. The project is basically a two way chat terminal, in which the peers communicate each other through IR. I will be using AT89C51 as my microcontroller and Assembly as the coding language. My biggest concern is interfracing IR transceiver to the 8051. Also I do not know any IR components that I may benefit. If you guys can provide me some material about these, I will really be glad. I have another question in my mind as well. I interfaced a keyboard to FPGA in VHDL before but I do not know how that stuff works here. What input device shall I use, is interfacing a keyboard a tough job ? I will greatly appreciate any help, I really am in need of help :smile:

Thank you

 

[tpetar]

Maybe this projects can help you or give you some ideas for developing your project :


Wireless Infrared Link
**broken link removed**

LCD Module Control over IR Link
http://avtanski.net/projects/lcd_serial/

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Read this material :

http://www.societyofrobots.com/electronics_irda_tutorial.shtml

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For connecting Keyboard see this :

USB Host Library
http://www.libstock.com/projects/view/597/usb-host-library

Watch movies!

 

[yttuncel]

Thanks for the quick reply,

HSDL-1100 seems like a good choice for a transceiver. I am not missing anything right? I mean it wont cause any problems like compatability or as such.

---UPDATE---
There are a variety of IrDA ICs out there, but as I understand UART is compatible with the 115.2 kbps ones. Is there any manufacturer who has better prices or any website that provides sales of these components to europe?
---------------

So what I will do is:
First I will interface the input devices (keyboard or keypad) to both microcontrollers. When peer 1 is writing the message, the characters he pressed will show up on his LCD until he presses "ENTER"*. Then the moment he presses enter, the text he entered will be serially transmitted to peer 2**. The text peer 1 entered is now visible in both LCDs.

I marked the parts that I am not sure of with asterisks, here they are:
*: How will I check if ENTER is pressed ? I assume after this step, I will make the transmit ready flag 1, right?
**: The data will be sent 10bits by 10bits, 8 bits of ASCII code surrounded with stop and start bits, I guess. As far as I remember 8051 has a special register for this purpose, so I wont need to think of anything else right?

Any further help is appreciated.
Thanks