hey guys , i ve been trying to communicate with a dfplayer mini with an esp32, to play an alarm sound .. i ve not been very succesfull in communicating with it .
i always encounter this error .
DFRobot DFPlayer Mini Demo
Initializing DFPlayer ... (May take 3~5 seconds)
Unable to begin:
1.Please recheck the connection!
2.Please insert the SD card!
here is my code which is the gettingstarted code of dfplayer library
/***************************************************
DFPlayer - A Mini MP3 Player For Arduino
<https://www.dfrobot.com/product-1121.html>
***************************************************
This example shows the basic function of library for DFPlayer.
Created 2016-12-07
By [Angelo qiao](Angelo.qiao@dfrobot.com)
GNU Lesser General Public License.
See <http://www.gnu.org/licenses/> for details.
All above must be included in any redistribution
****************************************************/
/***********Notice and Trouble shooting***************
1.Connection and Diagram can be found here
<https://www.dfrobot.com/wiki/index.php/DFPlayer_Mini_SKU:DFR0299#Connection_Diagram>
2.This code is tested on Arduino Uno, Leonardo, Mega boards.
****************************************************/
#include "Arduino.h"
#include "DFRobotDFPlayerMini.h"
#if (defined(ARDUINO_AVR_UNO) || defined(ESP8266)) // Using a soft serial port
#include <SoftwareSerial.h>
SoftwareSerial softSerial(/*rx =*/4, /*tx =*/5);
#define FPSerial softSerial
#else
#define FPSerial Serial1
#endif
DFRobotDFPlayerMini myDFPlayer;
void printDetail(uint8_t type, int value);
void setup()
{
#if (defined ESP32)
FPSerial.begin(9600, SERIAL_8N1, /*rx =*/3, /*tx =*/1);
#else
FPSerial.begin(9600);
#endif
Serial.begin(115200);
Serial.println();
Serial.println(F("DFRobot DFPlayer Mini Demo"));
Serial.println(F("Initializing DFPlayer ... (May take 3~5 seconds)"));
if (!myDFPlayer.begin(FPSerial, /*isACK = */true, /*doReset = */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){
delay(0); // Code to compatible with ESP8266 watch dog.
}
}
Serial.println(F("DFPlayer Mini online."));
myDFPlayer.volume(10); //Set volume value. From 0 to 30
myDFPlayer.play(1); //Play the first mp3
}
void loop()
{
static unsigned long timer = millis();
if (millis() - timer > 3000) {
timer = millis();
myDFPlayer.next(); //Play next mp3 every 3 second.
}
if (myDFPlayer.available()) {
printDetail(myDFPlayer.readType(), myDFPlayer.read()); //Print the detail message from DFPlayer to handle different errors and states.
}
}
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;
}
}
and here are my connections !
Any insights will be appreciated . thanks
i do not have the same board in the picture , i have a 38 pin one , so the pins are adjusted accordingly .
