Arduino Blink rev_04

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    - Project: Arduino Blink
    - Source Code NOT compiled for: Arduino Uno
    - Source Code created on: 2025-10-06 22:45:14

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* give me example led */
/****** END SYSTEM REQUIREMENTS *****/


/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <Arduino.h> // LINE 2: Include Arduino core library

/****** FUNCTION PROTOTYPES *****/
void setup(void); // LINE 5: Prototype for setup
void loop(void); // LINE 6: Prototype for loop

/***** LED example configuration *****/
const uint8_t LED_PIN = 13; // Built-in LED on UNO
unsigned long previousMillis = 0; // Tracks last blink time
const unsigned long interval = 500; // Blink interval in milliseconds
bool ledState = false; // Current LED state

void setup(void) // Start of setup
{
    // put your setup code here, to run once:
    pinMode(LED_PIN, OUTPUT); // Configure LED_PIN as output
    digitalWrite(LED_PIN, LOW); // Turn LED off initially
    // LED example initialisation complete
}


void loop(void) // Start of loop
{
    // put your main code here, to run repeatedly:
    unsigned long currentMillis = millis(); // Read current time in ms
    if (currentMillis - previousMillis >= interval) // Check for interval elapsed
    {
        previousMillis = currentMillis; // Update last blink time
        ledState = !ledState; // Toggle LED state
        digitalWrite(LED_PIN, ledState ? HIGH : LOW); // Write LED state
    }
}

/* END CODE */