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	- Project: Arduino Ultrasonic
	- Source Code compiled for: Arduino Uno
	- Source Code created on: 2024-01-16 01:39:22

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
	/* Follow line and avoid obstacle when the distance */
	/* of robot and obstacle is 10cm */
/****** END SYSTEM REQUIREMENTS *****/

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

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

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t Ultrasonic_HC_SR04_Echo_PIN_D3 = 3;

/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t Ultrasonic_HC_SR04_Trigger_PIN_D2 = 2;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
Ultrasonic ultrasonic(Ultrasonic_HC_SR04_Trigger_PIN_D2, Ultrasonic_HC_SR04_Echo_PIN_D3);

void setup(void)
{
  // put your setup code here, to run once:
  pinMode(Ultrasonic_HC_SR04_Echo_PIN_D3, INPUT);
  pinMode(Ultrasonic_HC_SR04_Trigger_PIN_D2, OUTPUT);
}

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

  if (distance <= 10) {
    // Follow line and avoid obstacle when the distance is less than or equal to 10cm
    // Add your code here to follow line and avoid obstacle
  }

  delay(100); // Delay between measurements
}