Relay Monitor rev_09

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    - Project: Relay Monitor
    - Source Code compiled for: Arduino Opta WiFi
    - Source Code created on: 2025-08-04 21:56:00

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* Toggle relay 1 and its associated LED every 3 */
    /* seconds using the connected relay (pin D0) and LED */
    /* component (pin LED_D0) on the Arduino Opta WiFi */
    /* board. */
/****** END SYSTEM REQUIREMENTS *****/


/********* User code review feedback **********
#### Feedback 1 ####
- add information on serial
********* User code review feedback **********/

/* START CODE */
/****** DEFINITION OF LIBRARIES *****/

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);

const int relayPin = D0;      // Pin connected to relay 1
const int ledPin = LED_D0;    // Pin connected to LED associated with relay 1

void setup(void)
{
  // Initialize serial communication at 9600 baud rate
  Serial.begin(9600);
  Serial.println("System initialized. Starting relay toggle loop.");

  // Initialize relay and LED pins as outputs
  pinMode(relayPin, OUTPUT);
  pinMode(ledPin, OUTPUT);
}

void loop(void)
{
  static bool relayState = LOW; // Keep track of relay and LED state

  // Toggle relay and LED state
  relayState = !relayState;
  digitalWrite(relayPin, relayState);
  digitalWrite(ledPin, relayState);

  // Send status message over serial
  if (relayState)
  {
    Serial.println("Relay and LED turned ON");
  }
  else
  {
    Serial.println("Relay and LED turned OFF");
  }

  delay(3000); // Wait for 3 seconds
}