Revise paste Ultrasonic Buzzer rev_19

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- Project: Ultrasonic Buzzer
	- Source Code compiled for: Arduino Uno
	- Source Code created on: 2023-12-19 22:33:27

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
	/* if distance is less than 20cm so start to beep the */
	/* buzzer. */
/****** END SYSTEM REQUIREMENTS *****/

/****** DEFINITION OF LIBRARIES *****/
#include <Arduino.h>
#include <Ultrasonic.h>

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t frontSensor_HC_SR04_Echo_PIN_D4 = 4;

/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t alarm_ActiveBuzzer_output_PIN_D2 = 2;
const uint8_t frontSensor_HC_SR04_Trigger_PIN_D3 = 3;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
Ultrasonic ultrasonic(frontSensor_HC_SR04_Trigger_PIN_D3, frontSensor_HC_SR04_Echo_PIN_D4);

void setup(void)
{
  // put your setup code here, to run once:
  pinMode(frontSensor_HC_SR04_Echo_PIN_D4, INPUT);
  pinMode(alarm_ActiveBuzzer_output_PIN_D2, OUTPUT);
  pinMode(frontSensor_HC_SR04_Trigger_PIN_D3, OUTPUT);
}

void loop(void)
{
  // put your main code here, to run repeatedly:
  
  // Read the distance measured by the ultrasonic sensor in centimeters
  unsigned int distance = ultrasonic.read();

// Check if the distance is less than 20cm
  if (distance < 20) {
    // Activate the buzzer
    digitalWrite(alarm_ActiveBuzzer_output_PIN_D2, HIGH);
  } else {
    // Deactivate the buzzer
    digitalWrite(alarm_ActiveBuzzer_output_PIN_D2, LOW);
  }
  
  // Delay for a short time before taking the next measurement
  delay(100);
}