ESP32 and DFPlayermini, not play sound from push button

Projects Programming
1

Hello, I am moving a project from Arduino UNO, to ESP32, but I am having difficulties with the code in ESP32, in this case, when pressing a button, it should play a specific sound, but it does not work. I am basing it on my old Arduino UNO code.

My diagram

esp32-dfplayermini
esp32-dfplayermini1719×1024 233 KB

Current code:

#include <Arduino.h>
#include "DFRobotDFPlayerMini.h"

bool doneFlag = false;

HardwareSerial mySoftwareSerial(1);
DFRobotDFPlayerMini myDFPlayer;
void printDetail(uint8_t type, int value);

# define ACTIVATED LOW

int btnpuerta = 35;
int btnwelcome = 34;



void setup()
{

  mySoftwareSerial.begin(9600, SERIAL_8N1, 16, 17);  // speed, type, RX, TX
  Serial.begin(115200);

  pinMode(btnpuerta, INPUT);
  digitalWrite(btnpuerta, HIGH);


  pinMode(btnwelcome, INPUT);
  //digitalWrite(btnwelcome, HIGH);


  
  Serial.println();
  Serial.println(F("DFRobot DFPlayer Mini Demo"));
  Serial.println(F("Initializing DFPlayer ... (May take 3~5 seconds)"));
  
  if (!myDFPlayer.begin(mySoftwareSerial)) {  //Use softwareSerial 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);
  }
  Serial.println(F("DFPlayer Mini online."));
  
  myDFPlayer.setTimeOut(500); //Set serial communictaion time out 500ms
  
  //----Set volume----
  myDFPlayer.volume(30);  //Set volume value (0~30).
  myDFPlayer.volumeUp(); //Volume Up
  myDFPlayer.volumeDown(); //Volume Down
  
  //----Set different EQ----
  myDFPlayer.EQ(DFPLAYER_EQ_NORMAL);

  
  //----Set device we use SD as default----

    myDFPlayer.outputDevice(DFPLAYER_DEVICE_SD);

  //----Read imformation----
  Serial.println(myDFPlayer.readState()); //read mp3 state
  Serial.println(myDFPlayer.readVolume()); //read current volume
  Serial.println(myDFPlayer.readEQ()); //read EQ setting
  Serial.println(myDFPlayer.readFileCounts()); //read all file counts in SD card
  Serial.println(myDFPlayer.readCurrentFileNumber()); //read current play file number
  Serial.println(myDFPlayer.readFileCountsInFolder(3)); //read file counts in folder SD:/03

}

void loop()
{

  if (digitalRead(btnpuerta) == ACTIVATED) {
    myDFPlayer.play(1);
    delay(2000);
  }

}

void printDetail(uint8_t type, int value){
  switch (type) {
    case TimeOut:
      Serial.println(F("Time Out!"));
      break;
    case WrongStack:
      Serial.println(F("Stack Wrong!"));
      break;
    case DFPlayerCardInserted:
      Serial.println(F("Card Inserted!"));
      break;
    case DFPlayerCardRemoved:
      Serial.println(F("Card Removed!"));
      break;
    case DFPlayerCardOnline:
      Serial.println(F("Card Online!"));
      break;
    case DFPlayerPlayFinished:
      Serial.print(F("Number:"));
      Serial.print(value);
      Serial.println(F(" Play Finished!"));
      break;
    case DFPlayerError:
      Serial.print(F("DFPlayerError:"));
      switch (value) {
        case Busy:
          Serial.println(F("Card not found"));
          break;
        case Sleeping:
          Serial.println(F("Sleeping"));
          break;
        case SerialWrongStack:
          Serial.println(F("Get Wrong Stack"));
          break;
        case CheckSumNotMatch:
          Serial.println(F("Check Sum Not Match"));
          break;
        case FileIndexOut:
          Serial.println(F("File Index Out of Bound"));
          break;
        case FileMismatch:
          Serial.println(F("Cannot Find File"));
          break;
        case Advertise:
          Serial.println(F("In Advertise"));
          break;
        default:
          break;
      }
      break;
    default:
      break;
  }
}

My old code, used in Arduino UNO, this code working perfectly

#include "SoftwareSerial.h"
#include "DFRobotDFPlayerMini.h"


bool doneFlag = false;

SoftwareSerial mySoftwareSerial(10, 11); // RX, TX


DFRobotDFPlayerMini myDFPlayer;
void printDetail(uint8_t type, int value);

# define ACTIVATED LOW

int btnpuerta = 7;
int btnwelcome = 6;


void setup()
{

  pinMode(btnpuerta, INPUT);
  digitalWrite(btnpuerta, HIGH);

  pinMode(btnwelcome, INPUT);
  digitalWrite(btnwelcome, HIGH);

  Serial.begin(9600);
  
  mySoftwareSerial.begin(9600);




  Serial.println();
  Serial.println(F("Escanmotor.com"));
  Serial.println(F("Initializing DFPlayer ... (May take 3~5 seconds)"));


  if (!myDFPlayer.begin(mySoftwareSerial)) {  //Use softwareSerial 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);
  }
  Serial.println(F("DFPlayer Mini online."));

  myDFPlayer.setTimeOut(500); //Set serial communictaion time out 500ms

  //----Set volume----
  myDFPlayer.volume(30);  //Set volume value (0~30).
  myDFPlayer.volumeUp(); //Volume Up
  myDFPlayer.volumeDown(); //Volume Down

  //----Set different EQ----
  myDFPlayer.EQ(DFPLAYER_EQ_NORMAL);


  //----Set device we use SD as default----

  myDFPlayer.outputDevice(DFPLAYER_DEVICE_SD);



  //----Read imformation----
  Serial.println(myDFPlayer.readState()); //read mp3 state
  Serial.println(myDFPlayer.readVolume()); //read current volume
  Serial.println(myDFPlayer.readEQ()); //read EQ setting
  Serial.println(myDFPlayer.readFileCounts()); //read all file counts in SD card
  Serial.println(myDFPlayer.readCurrentFileNumber()); //read current play file number
  Serial.println(myDFPlayer.readFileCountsInFolder(3)); //read file counts in folder SD:/03


}

void loop() {



  mySoftwareSerial.listen();




  if (digitalRead(btnpuerta) == ACTIVATED) {
    myDFPlayer.play(1);
    delay(2000);
  }


  if (digitalRead(btnwelcome) == ACTIVATED) {
    if (doneFlag == false) // fragmento para repetir el comando una sola vez
    {
      myDFPlayer.play (5);
      delay (2000);
      myDFPlayer.stop ();
      doneFlag = true;
    }
    /*Restablecemos para que se vuelva activar al desaparecer la señal*/
  } else {
    doneFlag = false;
  }



}


void printDetail(uint8_t type, int value) {
  switch (type) {
    case TimeOut:
      Serial.println(F("Time Out!"));
      break;
    case WrongStack:
      Serial.println(F("Stack Wrong!"));
      break;
    case DFPlayerCardInserted:
      Serial.println(F("Card Inserted!"));
      break;
    case DFPlayerCardRemoved:
      Serial.println(F("Card Removed!"));
      break;
    case DFPlayerCardOnline:
      Serial.println(F("Card Online!"));
      break;
    case DFPlayerUSBInserted:
      Serial.println("USB Inserted!");
      break;
    case DFPlayerUSBRemoved:
      Serial.println("USB Removed!");
      break;
    case DFPlayerPlayFinished:
      Serial.print(F("Number:"));
      Serial.print(value);
      Serial.println(F(" Play Finished!"));
      break;
    case DFPlayerError:
      Serial.print(F("DFPlayerError:"));
      switch (value) {
        case Busy:
          Serial.println(F("Card not found"));
          break;
        case Sleeping:
          Serial.println(F("Sleeping"));
          break;
        case SerialWrongStack:
          Serial.println(F("Get Wrong Stack"));
          break;
        case CheckSumNotMatch:
          Serial.println(F("Check Sum Not Match"));
          break;
        case FileIndexOut:
          Serial.println(F("File Index Out of Bound"));
          break;
        case FileMismatch:
          Serial.println(F("Cannot Find File"));
          break;
        case Advertise:
          Serial.println(F("In Advertise"));
          break;
        default:
          break;
      }
      break;
    default:
      break;
  }

}

Thnks for u help

2

Post the output/errors from your serial monitor.

3

Your buttons are not grounded. The esp (or Uno) cannot read them like that.

  digitalWrite(btnpuerta, HIGH);

  pinMode(btnwelcome, INPUT);

You need to use INPUT_PULLUP here. This code will not work on esp or Uno. What code and circuit did you use with Uno?

4

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