b.c

/*******************************************************
This program was created by the
CodeWizardAVR V3.12 Advanced
Automatic Program Generator
� Copyright 1998-2014 Pavel Haiduc, HP InfoTech s.r.l.
http://www.hpinfotech.com

Project : 
Version : 
Date    : 6/9/2021
Author  : 
Company : 
Comments: 


Chip type               : ATmega32
Program type            : Application
AVR Core Clock frequency: 11.059200 MHz
Memory model            : Small
External RAM size       : 0
Data Stack size         : 512
*******************************************************/

#include <mega32.h>
#include <delay.h>

// Alphanumeric LCD functions
#include <alcd.h>
#include <stdlib.h>

// Declare your global variables here
char isOn = 0;

// External Interrupt 0 service routine
interrupt[EXT_INT0] void ext_int0_isr(void)
{
    PORTC.0 = isOn ? 0 : 1;
    isOn = !isOn;
}

void main(void)
{
    // Declare your local variables here

    // Input/Output Ports initialization
    // Port A initialization
    // Function: Bit7=In Bit6=In Bit5=In Bit4=In Bit3=In Bit2=In Bit1=In Bit0=In
    DDRA = (0 << DDA7) | (0 << DDA6) | (0 << DDA5) | (0 << DDA4) | (0 << DDA3) | (0 << DDA2) | (0 << DDA1) | (0 << DDA0);
    // State: Bit7=T Bit6=T Bit5=T Bit4=T Bit3=T Bit2=T Bit1=T Bit0=T
    PORTA = (0 << PORTA7) | (0 << PORTA6) | (0 << PORTA5) | (0 << PORTA4) | (0 << PORTA3) | (0 << PORTA2) | (0 << PORTA1) | (0 << PORTA0);

    // Port B initialization
    // Function: Bit7=In Bit6=In Bit5=In Bit4=In Bit3=In Bit2=In Bit1=In Bit0=In
    DDRB = (0 << DDB7) | (0 << DDB6) | (0 << DDB5) | (0 << DDB4) | (0 << DDB3) | (0 << DDB2) | (0 << DDB1) | (0 << DDB0);
    // State: Bit7=T Bit6=T Bit5=T Bit4=T Bit3=T Bit2=T Bit1=T Bit0=T
    PORTB = (0 << PORTB7) | (0 << PORTB6) | (0 << PORTB5) | (0 << PORTB4) | (0 << PORTB3) | (0 << PORTB2) | (0 << PORTB1) | (0 << PORTB0);

    // Port C initialization
    // Function: Bit7=In Bit6=In Bit5=In Bit4=In Bit3=In Bit2=In Bit1=In Bit0=In
    DDRC = (0 << DDC7) | (0 << DDC6) | (0 << DDC5) | (0 << DDC4) | (0 << DDC3) | (0 << DDC2) | (0 << DDC1) | (0 << DDC0);
    // State: Bit7=T Bit6=T Bit5=T Bit4=T Bit3=T Bit2=T Bit1=T Bit0=T
    PORTC = (0 << PORTC7) | (0 << PORTC6) | (0 << PORTC5) | (0 << PORTC4) | (0 << PORTC3) | (0 << PORTC2) | (0 << PORTC1) | (0 << PORTC0);

    // Port D initialization
    // Function: Bit7=In Bit6=In Bit5=In Bit4=In Bit3=In Bit2=In Bit1=Out Bit0=Out
    DDRD = (0 << DDD7) | (0 << DDD6) | (0 << DDD5) | (0 << DDD4) | (0 << DDD3) | (0 << DDD2) | (1 << DDD1) | (1 << DDD0);
    // State: Bit7=T Bit6=T Bit5=T Bit4=T Bit3=T Bit2=T Bit1=0 Bit0=0
    PORTD = (0 << PORTD7) | (0 << PORTD6) | (0 << PORTD5) | (0 << PORTD4) | (0 << PORTD3) | (0 << PORTD2) | (0 << PORTD1) | (0 << PORTD0);

    // Timer/Counter 0 initialization
    // Clock source: System Clock
    // Clock value: Timer 0 Stopped
    // Mode: Normal top=0xFF
    // OC0 output: Disconnected
    TCCR0 = (0 << WGM00) | (0 << COM01) | (0 << COM00) | (0 << WGM01) | (0 << CS02) | (0 << CS01) | (0 << CS00);
    TCNT0 = 0x00;
    OCR0 = 0x00;

    // Timer/Counter 1 initialization
    // Clock source: System Clock
    // Clock value: Timer1 Stopped
    // Mode: Normal top=0xFFFF
    // OC1A output: Disconnected
    // OC1B output: Disconnected
    // Noise Canceler: Off
    // Input Capture on Falling Edge
    // Timer1 Overflow Interrupt: Off
    // Input Capture Interrupt: Off
    // Compare A Match Interrupt: Off
    // Compare B Match Interrupt: Off
    TCCR1A = (0 << COM1A1) | (0 << COM1A0) | (0 << COM1B1) | (0 << COM1B0) | (0 << WGM11) | (0 << WGM10);
    TCCR1B = (0 << ICNC1) | (0 << ICES1) | (0 << WGM13) | (0 << WGM12) | (0 << CS12) | (0 << CS11) | (0 << CS10);
    TCNT1H = 0x00;
    TCNT1L = 0x00;
    ICR1H = 0x00;
    ICR1L = 0x00;
    OCR1AH = 0x00;
    OCR1AL = 0x00;
    OCR1BH = 0x00;
    OCR1BL = 0x00;

    // Timer/Counter 2 initialization
    // Clock source: System Clock
    // Clock value: Timer2 Stopped
    // Mode: Normal top=0xFF
    // OC2 output: Disconnected
    ASSR = 0 << AS2;
    TCCR2 = (0 << PWM2) | (0 << COM21) | (0 << COM20) | (0 << CTC2) | (0 << CS22) | (0 << CS21) | (0 << CS20);
    TCNT2 = 0x00;
    OCR2 = 0x00;

    // Timer(s)/Counter(s) Interrupt(s) initialization
    TIMSK = (0 << OCIE2) | (0 << TOIE2) | (0 << TICIE1) | (0 << OCIE1A) | (0 << OCIE1B) | (0 << TOIE1) | (0 << OCIE0) | (0 << TOIE0);

    // External Interrupt(s) initialization
    // INT0: On
    // INT0 Mode: Falling Edge
    // INT1: Off
    // INT2: Off
    GICR |= (0 << INT1) | (1 << INT0) | (0 << INT2);
    MCUCR = (0 << ISC11) | (0 << ISC10) | (1 << ISC01) | (0 << ISC00);
    MCUCSR = (0 << ISC2);
    GIFR = (0 << INTF1) | (1 << INTF0) | (0 << INTF2);

    // USART initialization
    // USART disabled
    UCSRB = (0 << RXCIE) | (0 << TXCIE) | (0 << UDRIE) | (0 << RXEN) | (0 << TXEN) | (0 << UCSZ2) | (0 << RXB8) | (0 << TXB8);

    // Analog Comparator initialization
    // Analog Comparator: Off
    // The Analog Comparator's positive input is
    // connected to the AIN0 pin
    // The Analog Comparator's negative input is
    // connected to the AIN1 pin
    ACSR = (1 << ACD) | (0 << ACBG) | (0 << ACO) | (0 << ACI) | (0 << ACIE) | (0 << ACIC) | (0 << ACIS1) | (0 << ACIS0);
    SFIOR = (0 << ACME);

    // ADC initialization
    // ADC disabled
    ADCSRA = (0 << ADEN) | (0 << ADSC) | (0 << ADATE) | (0 << ADIF) | (0 << ADIE) | (0 << ADPS2) | (0 << ADPS1) | (0 << ADPS0);

    // SPI initialization
    // SPI disabled
    SPCR = (0 << SPIE) | (0 << SPE) | (0 << DORD) | (0 << MSTR) | (0 << CPOL) | (0 << CPHA) | (0 << SPR1) | (0 << SPR0);

    // TWI initialization
    // TWI disabled
    TWCR = (0 << TWEA) | (0 << TWSTA) | (0 << TWSTO) | (0 << TWEN) | (0 << TWIE);

    // Alphanumeric LCD initialization
    // Connections are specified in the
    // Project|Configure|C Compiler|Libraries|Alphanumeric LCD menu:
    // RS - PORTC Bit 1
    // RD - PORTC Bit 2
    // EN - PORTC Bit 3
    // D4 - PORTC Bit 4
    // D5 - PORTC Bit 5
    // D6 - PORTC Bit 6
    // D7 - PORTC Bit 7
    // Characters/line: 16
    lcd_init(16);
    DDRC.0 = 1;

// Global enable interrupts
#asm("sei")

    while (1)
    {
        // Place your code here
    }
}