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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.
 
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=
 
=Basics=
For this tutorial we will a connect a switch to PORT C0  and LED to PORT B0 of Atmega32. 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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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.
 
Refer the [[AVR I/O Register Configuration]] tutorial for basics of GPIO register configuration.

Revision as of 16:34, 5 April 2016

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.
Refer the AVR I/O Register Configuration tutorial for basics of GPIO register configuration.

Hook Up

ATmega128breakout Switch and a LED.png

Code

Demo

0Switch and a LED with Atmega128 Breakout.gif

Downloads