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libraries/audio-tools/examples/examples-communication/http-server/player-sd-webserverex_mp3/README.md

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+# A Simple SdFat Audio Player
+
+The example demonstrates how to implement an __MP3 Player__: which provides the data from a SD drive and provides the audio via a Webserver!
+
+## SD Card
+
+Here is the information how to wire the SD card to the ESP32
+
+| SD    | ESP32 
+|-------|-----------------------
+| CS    | VSPI-CS0 (GPIO 05) 
+| SCK   | VSPI-CLK (GPIO 18) 
+| MOSI  | VSPI-MOSI (GPIO 23) 
+| MISO  | VSPI-MISO (GPIO 19) 
+| VCC   | VIN (5V) 
+| GND   | GND 
+
+![SD](https://www.pschatzmann.ch/wp-content/uploads/2021/04/sd-module.jpeg)
+
+
+## Dependencies
+
+- https://github.com/pschatzmann/arduino-audio-tools
+- https://github.com/pschatzmann/TinyHttp.git
+- Arduino SD library

libraries/audio-tools/examples/examples-communication/http-server/player-sd-webserverex_mp3/player-sd-webserverex_mp3.ino

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+/**
+ * @file player-sdfat-a2dp.ino
+ * @brief see https://github.com/pschatzmann/arduino-audio-tools/blob/main/examples/examples-player/player-sdfat-a2dp/README.md
+ * 
+ * @author Phil Schatzmann
+ * @copyright GPLv3
+ */
+
+
+#include "AudioTools.h"
+#include "AudioTools/Disk/AudioSourceSD.h"
+#include "AudioTools/Communication/AudioServerEx.h"
+#include "AudioTools/AudioCodecs/CodecCopy.h"
+
+#define PIN_AUDIO_KIT_SD_CARD_CS 13
+#define PIN_AUDIO_KIT_SD_CARD_MISO 2
+#define PIN_AUDIO_KIT_SD_CARD_MOSI 15
+#define PIN_AUDIO_KIT_SD_CARD_CLK  14
+
+const char *ssid = "SSID";
+const char *password = "PWD";
+const char *startFilePath="/";
+const char* ext="mp3";
+
+AudioSourceSD source(startFilePath, ext, PIN_AUDIO_KIT_SD_CARD_CS);
+AudioServerEx out;
+AudioPlayer player(source, out, *new CopyDecoder());
+
+void setup() {
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Warning);
+  HttpLogger.setLevel(tinyhttp::Warning);
+
+  // setup SPI for SD card
+  SPI.begin(PIN_AUDIO_KIT_SD_CARD_CLK, PIN_AUDIO_KIT_SD_CARD_MISO, PIN_AUDIO_KIT_SD_CARD_MOSI, PIN_AUDIO_KIT_SD_CARD_CS);
+
+
+  // setup output - We need to login and serve the data as audio/mp3
+  auto cfg = out.defaultConfig();
+  cfg.password = password;
+  cfg.ssid = ssid;
+  cfg.mime = "audio/mp3";
+  out.begin(cfg);
+
+  // setup player
+  player.setVolume(1.0);
+  player.begin();
+
+}
+
+void loop() {
+  player.copy();
+  out.copy();
+}