PlayMP3ToSPDIF logs the message "MP3 source file not open" to the Serial monitor.

[matthewdrummond]

Playback ends immediately, as in Serial.printf("MP3 done\n"); executes right away. Here is the code that I have

#include <Arduino.h>
#if defined(ARDUINO_ARCH_RP2040)
void setup() {}
void loop() {}
#else

#ifdef ESP32
#include <WiFi.h>
#include "SPIFFS.h"
#else
#include <ESP8266WiFi.h>
#endif
#include "AudioFileSourceSPIFFS.h"
#include "AudioFileSourceID3.h"
#include "AudioGeneratorMP3.h"
#include "AudioOutputI2S.h"

// To run, set your ESP8266 build to 160MHz, and include a SPIFFS of 512KB or greater.
// Use the "Tools->ESP8266/ESP32 Sketch Data Upload" menu to write the MP3 to SPIFFS
// Then upload the sketch normally.

// pno_cs from https://ccrma.stanford.edu/~jos/pasp/Sound_Examples.html

AudioGeneratorMP3 *mp3;
AudioFileSourceSPIFFS *file;
AudioOutputI2S *out;
AudioFileSourceID3 *id3;

// Called when a metadata event occurs (i.e. an ID3 tag, an ICY block, etc.
void MDCallback(void *cbData, const char *type, bool isUnicode, const char *string)
{
(void)cbData;
Serial.printf("ID3 callback for: %s = '", type);

if (isUnicode) {
string += 2;
}

while (*string) {
char a = *(string++);
if (isUnicode) {
string++;
}
Serial.printf("%c", a);
}
Serial.printf("'\n");
Serial.flush();
}

void setup()
{
WiFi.mode(WIFI_OFF);
Serial.begin(115200);
delay(1000);
SPIFFS.begin();
Serial.printf("Sample MP3 playback begins...\n");

audioLogger = &Serial;
file = new AudioFileSourceSPIFFS("/pno-cs.mp3");
id3 = new AudioFileSourceID3(file);
id3->RegisterMetadataCB(MDCallback, (void*)"ID3TAG");
out = new AudioOutputI2S();
mp3 = new AudioGeneratorMP3();
mp3->begin(id3, out);
}

void loop()
{
if (mp3->isRunning()) {
if (!mp3->loop()) mp3->stop();
} else {
//Serial.printf("MP3 done\n");
delay(1000);
}
}
#endif

And here is the Serial Monitors output:

Sample MP3 playback begins...
MP3 source file not open

Anyone have any experience with this example? I am stuck here. Where is the Serial.println() that logs "MP3 source file not open" coming from? Thank you for any help

[ChulseungYoo]

I am having same problem.
did you resolved the issue?

I am using nodemcu board with esp-12f from ai thinker