OutdoorBinSoundActivation

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    - Project: OutdoorBinSoundActivation
    - Source Code NOT compiled for: Arduino Uno
    - Source Code created on: 2025-02-24 10:01:36

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* The system should use the HC-SR04 ultrasonic */
    /* sensor to detect items in the outdoor bin and play */
    /* a designated MP3 sound via the DFPlayer Mini when */
    /* an object is detected. */
/****** END SYSTEM REQUIREMENTS *****/

/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <SoftwareSerial.h>
#include <DFRobotDFPlayerMini.h>    //https://github.com/DFRobot/DFRobotDFPlayerMini
#include <Ultrasonic.h> //https://github.com/ErickSimoes/Ultrasonic

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void updateOutputs();
void detectObjectAndPlaySound(); // New function to detect objects and play sound

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t ultrasonicsensor_HC-SR04_Echo_PIN_D3      = 3;

/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t ultrasonicsensor_HC-SR04_Trigger_PIN_D2       = 2;

/***** DEFINITION OF Software Serial *****/
const uint8_t mp3player_DFPlayerMini_Serial_PIN_SERIAL_TX_A0        = A0;
const uint8_t mp3player_DFPlayerMini_Serial_PIN_SERIAL_RX_A1        = A1;
SoftwareSerial mp3player_DFPlayerMini_Serial(mp3player_DFPlayerMini_Serial_PIN_SERIAL_RX_A1, mp3player_DFPlayerMini_Serial_PIN_SERIAL_TX_A0);

/***** DEFINITION OF OUTPUT RAW VARIABLES *****/
/***** used to store raw data *****/
bool ultrasonicsensor_HC-SR04_Trigger_PIN_D2_rawData = 0;

/***** DEFINITION OF OUTPUT PHYSICAL VARIABLES *****/
/***** used to store data after characteristic curve transformation *****/
float ultrasonicsensor_HC-SR04_Trigger_PIN_D2_phyData = 0.0;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
// Instantiate the DFPlayer Mini and Ultrasonic sensor objects
DFRobotDFPlayerMini mp3Player;
Ultrasonic ultrasonic(ultrasonicsensor_HC-SR04_Trigger_PIN_D2, ultrasonicsensor_HC-SR04_Echo_PIN_D3);

void setup(void)
{
    // put your setup code here, to run once:
    pinMode(ultrasonicsensor_HC-SR04_Echo_PIN_D3, INPUT);
    pinMode(ultrasonicsensor_HC-SR04_Trigger_PIN_D2, OUTPUT);
    mp3player_DFPlayerMini_Serial.begin(9600);
    mp3Player.begin(mp3player_DFPlayerMini_Serial); // Initialize DFPlayer Mini
}

void loop(void)
{
    // put your main code here, to run repeatedly:
    detectObjectAndPlaySound(); // Check for objects and play sound
}

void detectObjectAndPlaySound()
{
    // Measure distance using the ultrasonic sensor
    long distance = ultrasonic.read(); // Get distance in cm

    if (distance < 10) // If an object is detected within 10 cm
    {
        mp3Player.play(1); // Play the first MP3 file (adjust the number as needed)
        delay(1000); // Delay to prevent multiple triggers
    }
}

void updateOutputs()
{
    digitalWrite(ultrasonicsensor_HC-SR04_Trigger_PIN_D2, ultrasonicsensor_HC-SR04_Trigger_PIN_D2_rawData);
}

/* END CODE */