Difference between revisions of "Switch and a LED with Atmega128 Breakout"
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[[File:0Switch and a LED with Atmega128 Breakout.gif|none]] | [[File:0Switch and a LED with Atmega128 Breakout.gif|none]] | ||
− | =Downloads= | + | =Video Tutorial= |
+ | For those of you, who would like to watch instead of read we have made a video with all the gyan. | ||
+ | <br> | ||
+ | {{#ev:youtubehd|-lNAmSNV2-Q|640}} | ||
+ | |||
+ | |||
+ | = Downloads= | ||
+ | Download the complete project folder from the below link: | ||
+ | https://github.com/ExploreEmbedded/ATMega-128-Break-Out-BoardDVB-12007/archive/master.zip<br> | ||
+ | |||
+ | |||
+ | |||
+ | Have a opinion, suggestion , question or feedback about the article let it out here! | ||
+ | {{DISQUS}} |
Latest revision as of 12:28, 19 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.
Contents
[hide]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
Code
#include <avr/io.h> | |
#include <util/delay.h> | |
#define LED PB0 | |
#define SWITCH PC0 | |
int main() | |
{ | |
DDRB = (1 << LED); // Configure PORTB as output to connect Leds | |
DDRC = (0 << SWITCH); // Configure PORTC as Input to connect switches | |
PORTC = (1 << SWITCH); // Enable The PullUps of PORTC. | |
while(1) | |
{ | |
while(((PINC) & (1<<SWITCH)) == 1) // Check the status of the switch | |
{ | |
PORTB |= (1<<LED); | |
} | |
PORTB &= ~(1<<LED); | |
} | |
return 0; | |
} |
Demo
Video Tutorial
For those of you, who would like to watch instead of read we have made a video with all the gyan.
Downloads
Download the complete project folder from the below link:
https://github.com/ExploreEmbedded/ATMega-128-Break-Out-BoardDVB-12007/archive/master.zip
Have a opinion, suggestion , question or feedback about the article let it out here!