ATmega32 LED Blink (PC0)

This tutorial explains how to blink an LED using the ATmega32 microcontroller.

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🔌 LED Connection

• LED is connected to PC0

✅ Logic Type: Active-HIGH

• PC0 = 1 → LED ON
• PC0 = 0 → LED OFF

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⚙️ Requirements

Hardware

• ATmega32 Development Board
• ATMEL AVR 8051 USBasp ISP Programmer
• LED + 470Ω resistor (if not on-board)

Software

• Atmel Studio / Microchip Studio / AVR-GCC
• Programmer software (e.g., AVRDude)

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🧱 Project Setup

1. Open your AVR IDE (Atmel Studio / Microchip Studio)
2. Create a New GCC C Project
3. Select device: ATmega32
4. Add a new file: main.c

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💡 LED Blink Code

Note: Delay depends on CPU frequency. Here we assume 12 MHz.

#define F_CPU 12000000UL  // CPU frequency

#include <avr/io.h>
#include <util/delay.h>

int main(void)
{
    // Set PC0 as output
    DDRC |= (1 << PC0);

    // LED OFF initially
    PORTC &= ~(1 << PC0);

    while (1)
    {
        // LED ON
        PORTC |= (1 << PC0);
        _delay_ms(500);

        // LED OFF
        PORTC &= ~(1 << PC0);
        _delay_ms(500);
    }
}