Snoooze LED with PWM Atmega16 (CVC)

Snoooooze LED

This is to produce a Fast PWM to turn on off LED in analog manner.
Target Device Atmega16, STK500, CLK= 3.686MHz, PortB connected to LEDs.

CODE

#include <Mega16.h>
#include <Delay.h>
//-----------------------------------------
void setcounter0(unsigned char d)
{
TIMSK=0x00; //Fast PWM Mode
TCCR0=0x7B;
OCR0=d;
TCNT0=0x00;
}
//------------------------------------------

unsigned char i=0x00;
unsigned char j=0x00;
//-----------------------
void main (void)
{
//----------------------
DDRA=0x00;
DDRB=0x08;
DDRC=0x00;
DDRD=0x00;
//-----------------------
setcounter0(i);

//TIMSK=0x00; //normal mode
//TCCR0=0x15;
//OCR0=0xFF;
//TCNT0=0x00;
//----------------------
done:
for (i=0x01; i<0xff; i++)
{
setcounter0(i);
delay_ms(5);
}

for (j=0xFE; j>0x01; j--)
{
setcounter0(j);
delay_ms(5);
}
goto done;

}