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Thanks in advance for your cooperation.
thanks for your response.
If I select "esp32 dev module" , after I upload a code (even an empty code) , it goes into boot loop.
When I select "nodemcu-32s" , it does not go into boot loop and functions fine.
if the correct board is what you wrote, then what's wrong with my setup ?
when I use serial2 as you wrote, it compiles well. but I don't get any sound.
DFRobotDFPlayerMini myDFPlayer;
Serial2.begin(9600, SERIAL_8N1, /*rx =*/16, /*tx =*/17);
if (!myDFPlayer.begin(Serial2, true, true)) {
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);
}
}
Serial.println(F("DFPlayer Mini online."));
myDFPlayer.volume(20); //Set volume value. From 0 to 30
myDFPlayer.play(1); //Play the first mp3
I used the attached diagram.
TX (gpio 17) is connected with a 1K resistor to the player.
RX (gpio 16) is directly connected to the player.
Powered directly with 5V (VCC+GND)
And the speaker is connected as in the image.
I have a Fat32 formatted SD card on it. And it has 7 short mp3 files.
Does the format or name of the mp3 file matter ?
When I remove player's power , TX or RX, I get an error. So I assume the connections are OK.
Is there a way to test the speaker ? (dfplayer command ?) When I plug power, I hear a tock sound from the speaker.
it seems like "play(1)" command does not work and the code is stuck there.
if (!myDFPlayer.begin(Serial2, true, true)) {
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(20);
Serial.println(F("DFPlayer Mini log 1."));
myDFPlayer.play(1); //Play the first mp3
Serial.println(F("DFPlayer Mini log 2."));
delay(1000);
Serial.println(F("DFPlayer Mini log 3."));
because with this code all I get is:
13:01:17.462 -> DFPlayer Mini online.
13:01:17.961 -> DFPlayer Mini log 1.
when I remove the esp32 module and give a direct command to the player (connect ground to IO1) , its led goes ON and sound comes from speaker.
So the speaker is working. Module is working.
But when the library is used, "play(1)" command does not work
Long shot: I eventually diagnosed some problems with the DFR player to a bug in the latest library version. Going back from 106 to 105 fixed it. Suggest you try same to eliminate that possibilty.
