[AVR] Two serial ports with atmega 8 / 16 /32 is it possible to use

[ark5230]

Is it possible to implement two serial ports on Atmega 8/ 16/ 32 etc.
How to do that.
Is the concept of software modem of any use in such situation.
Any hint or link please.

 

[xpress_embedo]

You can use software uart for this purpose, multiplexer can also work in such situation.

 

[ark5230]

xpress_embedo
Would you kindly advise as to how to implement the same.
Which one is easier.

 

[xpress_embedo]

Well i don't know which one is better, and i can't comment about the easiest method.


Here are few links
http://www.atmel.com/images/doc0941.pdf
http://github.com/blalor/avr-softuart
http://www.avrfreaks.net/forum/software-serial-uart?page=all

If you use mikroC for AVR compiler then it has in built libraries for this purpose.
**broken link removed**

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Few years back i used Software UART for PIC18f4550 micro-controller and that works for me in that project.
But i had used Software UART Transmission first and then Switch to Software Reception Mode.

- - - Updated - - -

Few years back i used Software UART for PIC18f4550 micro-controller and that works for me in that project.
But i had used Software UART Transmission first and then Switch to Software Reception Mode.

 

[ark5230]

Yes,
Thanks, it has info on what I am trying to do.
I will be back in case of difficulty.

 

[ark5230]

I tried to redefine the problem, now it looks like https:// https://www.edaboard.com/threads/335568/

Attempting use of multiplexer 74ls257