Audio LED rev_04

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    - Project: Audio LED
    - Source Code NOT compiled for: Arduino Uno
    - Source Code created on: 2024-09-22 21:10:42

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* play track for 3 minutes.  Shut down for 2 minutes */
    /* then loop */
/****** SYSTEM REQUIREMENT 2 *****/
    /* Play a random audio track (from 2 to 5) using the */
    /* DFRobot DFPlayer Mini module for 3 minutes, */
    /* followed by a 2-minute shutdown, then repeat the */
    /* cycle. Control LED indicators during playback and */
    /* shutdown phases. */
/****** END SYSTEM REQUIREMENTS *****/

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

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

/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t LED_LED_PIN_D2        = 2; // LED for playback indication
const uint8_t LED_2_LED_PIN_D3      = 3; // LED for shutdown indication
const uint8_t LED_3_LED_PIN_D4      = 4; // Unused LED

/***** DEFINITION OF Software Serial *****/
const uint8_t DFPlayer_DFPlayerMini_Serial_PIN_SERIAL_TX_A0     = A0;
const uint8_t DFPlayer_DFPlayerMini_Serial_PIN_SERIAL_RX_A1     = A1;
SoftwareSerial DFPlayer_DFPlayerMini_Serial(DFPlayer_DFPlayerMini_Serial_PIN_SERIAL_RX_A1, DFPlayer_DFPlayerMini_Serial_PIN_SERIAL_TX_A0);

/***** DEFINITION OF OUTPUT RAW VARIABLES *****/
bool    LED_LED_PIN_D2_rawData      = 0; // Playback LED state
bool    LED_2_LED_PIN_D3_rawData        = 0; // Shutdown LED state
bool    LED_3_LED_PIN_D4_rawData        = 0; // Unused LED state

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
// Initialize DFPlayer object
DFRobotDFPlayerMini myDFPlayer; // Create an instance of the DFPlayer class

void setup(void)
{
    // put your setup code here, to run once:

    pinMode(LED_LED_PIN_D2,  OUTPUT); // Set playback LED pin as output
    pinMode(LED_2_LED_PIN_D3,    OUTPUT); // Set shutdown LED pin as output
    pinMode(LED_3_LED_PIN_D4,    OUTPUT); // Set unused LED pin as output

    // Start the software serial for DFPlayer
    DFPlayer_DFPlayerMini_Serial.begin(9600);

    // Initialize DFPlayer
    if (!myDFPlayer.begin(DFPlayer_DFPlayerMini_Serial, true, true)) { // Use serial to communicate with mp3.
        Serial.println(F("Unable to begin:"));
        Serial.println(F("1. Please recheck the connection!"));
        Serial.println(F("2. Please insert the SD card!"));
        while (true); // Loop forever if initialization fails
    }
    Serial.println(F("DFPlayer Mini online."));
}

void loop(void)
{
    // put your main code here, to run repeatedly:

    // Play a random audio track from 2 to 5 for 3 minutes
    unsigned long playbackStartTime = millis(); // Record the start time of playback
    while (millis() - playbackStartTime < 180000) { // Loop for 3 minutes (180000 ms)
        int randomTrack = random(2, 6); // Generate a random track number between 2 and 5
        myDFPlayer.play(randomTrack); // Play the selected track
        LED_LED_PIN_D2_rawData = HIGH; // Turn on playback LED
        updateOutputs(); // Update LED states
        delay(60000); // Wait for 1 minute before playing the next track
    }

    // Shutdown phase for 2 minutes
    LED_LED_PIN_D2_rawData = LOW; // Turn off playback LED
    LED_2_LED_PIN_D3_rawData = HIGH; // Turn on shutdown LED
    updateOutputs(); // Update LED states
    delay(120000); // Wait for 2 minutes

    // Turn off shutdown LED after the shutdown phase
    LED_2_LED_PIN_D3_rawData = LOW; // Turn off shutdown LED
    updateOutputs(); // Update LED states
}

void updateOutputs(void) {
    // Update the state of the LEDs based on the raw data
    digitalWrite(LED_LED_PIN_D2, LED_LED_PIN_D2_rawData); // Update playback LED
    digitalWrite(LED_2_LED_PIN_D3, LED_2_LED_PIN_D3_rawData); // Update shutdown LED
    digitalWrite(LED_3_LED_PIN_D4, LED_3_LED_PIN_D4_rawData); // Update unused LED
}

/* END CODE */