Project 1 - Controlling a DC motor using PWM and monitoring its Running status

LIVE BATCH(PREETI MALLIKARJUN)

1)program

#include <avr/io.h>
#include <util/delay.h>
#include "avr/interrupt.h"
#define F_CPU 16000000
#define direction (PIND &(1 << 1))
#define speed (PIND &(1 << 2))
#define power (PINC &(1 << 3))
#define lcd_port PORTB
#define RS_high PORTD |= (1<<5)
#define RS_low PORTD &=~ (1<<5)
#define EN_high PORTD |= (1<<6)
#define EN_low PORTD &=~ (1<<6)
unsigned char i;
void lcd_cmd(char cmd)
{
lcd_port = (cmd & 0xf0);
RS_low;
EN_low;
_delay_ms(1);
EN_high;
lcd_port = ((cmd << 4)&(0xf0));
RS_low;
EN_low;
_delay_ms(1);
EN_high;
}
void lcd_data(char data)
{
lcd_port = (data & 0xf0);
RS_high;
EN_low;
_delay_ms(1);
EN_high;
lcd_port = ((data << 4)&(0xf0));
RS_high;
EN_low;
_delay_ms(1);
EN_high;
}
void lcd_init()
{
lcd_cmd(0x02);_delay_ms(5);
lcd_cmd(0x01);_delay_ms(5);
lcd_cmd(0x0c);_delay_ms(5);
lcd_cmd(0x06);_delay_ms(5);
lcd_cmd(0x80);_delay_ms(5);
lcd_cmd(0x28);_delay_ms(5);
}

void cursorpos(char x, char y)
{
if((x<1||x>2||y>16||y<1))
{
x = 1;
y = 1;
}
if(x==1)
{
lcd_cmd(0x7f+y);
}
else
{
lcd_cmd(0xBF+y);
}
}
void lcd_out(char x, char y, char *str)
{
cursorpos(x,y);
while(*str)
{
lcd_data(*str);
str++;
}
}
int main()
{

DDRB = 0xFF;
DDRA |= ((1<<0)|(1<<1));
DDRD &=~(1<<1);
DDRD &=~(1<<2);
DDRD |=(1<<5);
DDRD |=(1<<6);
DDRC &=~(1<<3);
PORTD|=(1<<2);
PORTC|=(1<<3);
i=64;
TCCR0=0x61;
GICR = (1<<INT0);
MCUCR=0x02;
sei();
lcd_init();
while(1)
{
while(power==0)
{
if(direction==0)
{
PORTA=0b00000001;
lcd_out(1,1,"Motor is Running");
lcd_out(2,2," Clockwise ");
}
else
{
PORTA=0b00000010;
lcd_out(1,1,"Motor is Running");
lcd_out(2,3,"Anti Clockwise");
}
OCR0=i;
}
PORTA=0x00;
lcd_out(1,1," Motor is OFF ");
lcd_out(2,2," ");
}

}
ISR(INT0_vect)
{
i=i+20;
}