View source for Switch and a LED with Atmega128 Breakout ← Switch and a LED with Atmega128 Breakout

[[category:Atmega128 Breakout]]
Now we will control the LED depending on external input. In this tutorial we will interface a switch to one of the port pin and display its status on LED connected to other port.
=Basics=
For this tutorial we will a connect a switch to PORT C0  and LED to PORT B0 of Atmega128. W will configure PORT A0 as input to read the switch status and PORT C0 as outputto display the switch status on LED. Initially LED will be ON , when we press switch the LED will be OFF. 
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Refer the [[AVR I/O Register Configuration]] tutorial for basics of GPIO register configuration.

=Hook Up=
[[File:ATmega128breakout Switch and a LED.png|none]]

=Code=
<html>
<script src="https://gist.github.com/raghavendrahassy/54c2d30d52ae16c6a1e8b4d428ffe5c1.js"></script>
</html>

=Demo=
[[File:0Switch and a LED with Atmega128 Breakout.gif|none]]

=Downloads=