Interfacing Seven Segment Display with Starter AVR Revision as of 17:30, 5 April 2016 by Vaibhav Katkar (Talk | contribs) (diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Now we will go further and will interface more complex peripherals. In this tutorial we will interface common anode 7 segment display to the starter AVR board. To get idea about basics of 7 segment display check out our Interfacing Seven Segment Displays with AVR tutorial.

Hookup

Code

	#include <avr/io.h>
	#include <util/delay.h>
	#define Segment 0x01
	int main() {
	char seg_code[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e};
	int cnt;
	/* Configure the ports as output */
	DDRB = 0xff; // Data lines
	DDRD = 0x01; // Control signal PORTD0
	while (1)
	{
	for (cnt = 0x00; cnt < 0x10; cnt++) // loop to display 0-F
	{
	PORTD = Segment;
	PORTB = seg_code[cnt];
	_delay_ms(300);
	}
	}
	}

view raw 7Segment.c hosted with ❤ by GitHub

Demo