How to save mp3 file in sd card from api using esp32

[rjrajbir]

Hi everyone, I am working on a project where I have to save the mp3 file from custom API to sd card and after that play it using esp32 where I am using VS1053B Codec.

I have seen plenty of examples of internet radio which are playing audio through differrent web stations.

If anyone has solution for my problem, please let me know
Regards
Rajbir

[Railroader]

What/where is the problem?

[rjrajbir]

here is the code

#include <WiFi.h>
#include <HTTPClient.h>
#include <Arduino_JSON.h>

const char* ssid = "MYACCESSPOINT";
const char* password = "MYPASSWORD";

//Your Domain name with URL path or IP address with path
String serverName = "MYAPI";

// the following variables are unsigned longs because the time, measured in
// milliseconds, will quickly become a bigger number than can be stored in an int.
unsigned long lastTime = 0;
// Timer set to 10 minutes (600000)
//unsigned long timerDelay = 600000;
// Set timer to 5 seconds (5000)
unsigned long timerDelay = 5000;

String AUDIO_STRING ;
String AUDIO_STRING Arr[100];

void setup() {
  Serial.begin(115200);

  WiFi.begin(ssid, password);
  Serial.println("Connecting");
  while(WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("Connected to WiFi network with IP Address: ");
  Serial.println(WiFi.localIP());
 
  Serial.println("Timer set to 5 seconds (timerDelay variable), it will take 5 seconds before publishing the first reading.");
}

void loop() {
  //Send an HTTP POST request every 10 minutes
  if ((millis() - lastTime) > timerDelay) {
    //Check WiFi connection status
    if(WiFi.status()== WL_CONNECTED){
              
      AUDIO_STRING = httpGETRequest(serverName);
      Serial.println(AUDIO_STRING );
    }
    else {
      Serial.println("WiFi Disconnected");
    }
    lastTime = millis();
  }
}

String httpGETRequest(String serverName) {
  WiFiClient client;
  HTTPClient http;
    
  String serverPath = serverName + "?MYAPIPATH";
      
  // Your Domain name with URL path or IP address with path
  http.begin(serverPath.c_str());
  
  // Send HTTP POST request
  int httpResponseCode = http.GET();
  
  String payload = "{}"; 
  
  if (httpResponseCode>0) {
    Serial.print("HTTP Response code: ");
    Serial.println(httpResponseCode);
    payload = http.getString();
  }
  else {
    Serial.print("Error code: ");
    Serial.println(httpResponseCode);
  }
  // Free resources
  http.end();

  return payload;
}

here is the reply

Basically I want to get the audio from My custom API and want to play on speaker using esp32.
but i am getting this string data but don't know how to convert it in playable audio.

1.zip (17.0 KB)
This is the audio file I want to convert.

Please help me solve.

[rjrajbir]

I also got this lib to play the audio

[rjrajbir]

Please help if anyone is having the solution.