Micro-Chip programmazione in C Giuseppe Ferlante

/*
Autore Giuseppe Ferlante
Città:Gela,Sicilia,Cl

    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) 2015  Giuseppe Ferlante

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#define F_CPU 16000000  //16Mhz ,max:20Mhz
#include <avr/io.h>
#include <util/delay.h>
int main(void)
{
    DDRB |= 0x16;//output led 010000  , 5* led = 12
    DDRD &= 0x40;//per pulsante INPUT  1000000 = 0x40 , 7 pin
    //PORTD |= 0x01;
    PORTB &=0x00;//spegne led
    while(1)
    {
        if(bit_is_clear(PIND,7)==0)// se il pulsante è premuto
        {
            PORTB |=0x16;//accendo Led
        }
        else
        {
            PORTB &=0x00; //spengne :D
        }
    }
}
/*
PROGRAMMARE ATMEGA-328P , micro-Chip , CPU:8 bit AVR .
Facendo pressione sul pulsante collegato alla porta digitale '7' accende il led collegato alla porta digitale '12';
GIORNI per studiare impiegati:3.
*/