8x8 LED Matrix Control with AVR Microcontroller

#define F_CPU 1000000UL
#include <avr/io.h>
#include <util/delay.h>

#define columnDDR DDRB		// Setting up Data Direction Register for column
#define columnPort PORTB	// Setting up PORT for column

#define rowDDR DDRD			// Setting up Data Direction Register for row
#define rowPort PORTD		// Setting up PORT for row

// #define column_Address  2	// Define COLUMN address of LED matrix
// #define row_Address  1	// Define ROW address of LED matrix
#define LED_State 1


void LEDMatrix_Init (void);		// function for initialization of LED matrix
void LEDMatrix_SetPixel (int row, int column, int state);	// function for turning ON the LED matrix

int main (void)
{
	LEDMatrix_Init ();
	
	while (1)
	{
		
		for (int i = 0; i < 8; i++)
		{
			for (int j = 0; j < 8; j++)
			{
				LEDMatrix_SetPixel (i , j, 1);
				/*_delay_ms(1);*/
			}
		}
	}
}

void LEDMatrix_Init (void)
{
	columnDDR = 0XFF;		// Set the column PINS as output
	columnPort = 0x00;		// Initially clear all the PINs because it will connected to VCC or HIGH
	
	rowDDR = 0xFF;		// Set the row pins as output
	rowPort = 0xFF;		// Initially set all the PINs because it will be connected to GND or LOW
}

void LEDMatrix_SetPixel (int column, int row, int state)

{
	LEDMatrix_Init ();
	if(state == 0)
	{
		columnPort &= ~(1 << column);		// Set the column port or set as HIGH
		rowPort &= ~ (1 << row);			// Reset the row port or set as LOW
	}
	else
	{
		columnPort |= (1 << column);		// Set the column port or set as HIGH
		rowPort &= ~ (1 << row);			// Reset the row port or set as LOW
	}
}