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libraries/audio-tools/examples/examples-player/player-sdfat-audiokit/README.md

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+## Using the AI Thinker ESP32 Audio Kit as SD Player
+
+I found some cheap [AI Thinker ESP32 Audio Kit V2.2](https://docs.ai-thinker.com/en/esp32-audio-kit) on AliExpress and because I was tired of all the wires I had to connect to implement my different scenarios that are possible with my [Arduino Audio Tools Library](https://github.com/pschatzmann/arduino-audio-tools), I thought it to be a good idea to buy this board.
+
+<img src="https://pschatzmann.github.io/Resources/img/audio-toolkit.png" alt="Audio Kit" />
+
+You dont need to bother about any wires because everything is on one nice board. Just just need to install the dependencies
+To access the files we use the greiman/SdFat library.
+
+### Note
+
+The log level has been set to Info to help you to identify any problems. Please change it to AudioLogger::Warning to get the best sound quality!
+
+
+## Dependencies
+
+You need to install the following libraries:
+
+- https://github.com/pschatzmann/arduino-audio-tools
+- https://github.com/pschatzmann/arduino-libhelix
+- https://github.com/pschatzmann/arduino-audio-driver
+- https://github.com/greiman/SdFat

libraries/audio-tools/examples/examples-player/player-sdfat-audiokit/player-sdfat-audiokit.ino

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+/**
+ * @file player-sd-audiokit.ino
+ * @brief see https://github.com/pschatzmann/arduino-audio-tools/blob/main/examples/examples-audiokit/player-sdfat-audiokit/README.md
+ * Make sure that the pins are set to off, on, on, off, off
+ * @author Phil Schatzmann
+ * @copyright GPLv3
+ */
+
+
+#include "AudioTools.h"
+#include "AudioTools/AudioLibs/AudioBoardStream.h"
+#include "AudioTools/Disk/AudioSourceSDFAT.h" // or AudioSourceIdxSDFAT.h
+#include "AudioTools/AudioCodecs/CodecMP3Helix.h"
+
+const char *startFilePath="/";
+const char* ext="mp3";
+SdSpiConfig sdcfg(PIN_AUDIO_KIT_SD_CARD_CS, DEDICATED_SPI, SD_SCK_MHZ(10) , &SPI);
+AudioSourceSDFAT source(startFilePath, ext, sdcfg);
+AudioBoardStream kit(AudioKitEs8388V1);
+MP3DecoderHelix decoder;  // or change to MP3DecoderMAD
+AudioPlayer player(source, kit, decoder);
+
+void next(bool, int, void*) {
+   player.next();
+}
+
+void previous(bool, int, void*) {
+   player.previous();
+}
+
+void startStop(bool, int, void*) {
+   player.setActive(!player.isActive());
+}
+
+void setup() {
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);
+
+  // setup output
+  auto cfg = kit.defaultConfig(TX_MODE);
+  kit.begin(cfg);
+
+ // setup additional buttons 
+  kit.addDefaultActions();
+  kit.addAction(kit.getKey(1), startStop);
+  kit.addAction(kit.getKey(4), next);
+  kit.addAction(kit.getKey(3), previous);
+
+
+  // setup player
+  player.setVolume(0.7);
+  player.begin();
+
+  // select file with setPath() or setIndex()
+  //player.setPath("/ZZ Top/Unknown Album/Lowrider.mp3");
+  //player.setIndex(1); // 2nd file
+
+}
+
+void loop() {
+  player.copy();
+  kit.processActions();
+}