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

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+/**
+ * @file player-vector_sdfat.ino
+ * @brief example that shows how to use the versatile AudioSourceVector class
+ * as data source. We use the SdFat library to read audio files from an SD card.
+ * 
+ * @author Phil Schatzmann
+ * @copyright GPLv3
+ */
+
+ #include "AudioTools.h"
+#include "AudioTools/AudioCodecs/CodecMP3Helix.h"
+#include "AudioTools/AudioLibs/AudioBoardStream.h"
+#include "SPI.h"
+#include "SdFat.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
+
+// Callback to convert file path to stream for AudioSourceVector
+File32* fileToStream(const char* path, File32& oldFile);
+
+// Global data
+AudioSourceVector<File32> source(fileToStream);
+AudioBoardStream i2s(AudioKitEs8388V1); // or replace with e.g. I2SStream
+MP3DecoderHelix decoder;  // or change to MP3DecoderMAD
+AudioPlayer player(source, i2s, decoder);
+SdFat sd;
+File32 audioFile;
+
+
+// Callback to convert file path to stream for AudioSourceVector
+File32* fileToStream(const char* path, File32& oldFile) {
+  oldFile.close();
+  audioFile.open(path);
+
+  if (!audioFile) {
+    LOGE("Failed to open: %s", path);
+    return nullptr;
+  }
+  return &audioFile;
+}
+
+bool setupDrive() {
+  // Initialize 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);
+
+  if (!sd.begin(PIN_AUDIO_KIT_SD_CARD_CS, SPI_HALF_SPEED)) {
+    Serial.println("SD card initialization failed!");
+    return false;
+  }
+
+  // Use SDFAT's ls method to list files and automatically add file names 
+  const char* path = "/Bob Dylan/Bringing It All Back Home";
+  NamePrinter namePrinter(source, path);
+  auto dir = sd.open(path, FILE_READ);
+  dir.ls(&namePrinter, 0);
+  dir.close();
+
+  return true;
+}
+
+void setup() {
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);
+
+  // setup vector data source
+  if (!setupDrive()) {
+    Serial.println("Failed to setup drive");
+    stop();
+  }
+
+  // setup output
+  auto cfg = i2s.defaultConfig(TX_MODE);
+  // we setup up the SPI (pins) outselfs...
+  cfg.sd_active = false;
+  if (!i2s.begin(cfg)) {
+    Serial.println("Failed to start I2S");
+    stop();
+  }
+
+  // setup player
+  player.setVolume(0.7);
+  if (!player.begin()) {
+    Serial.println("Failed to start player");
+    stop();
+  }
+}
+
+void loop() {
+  player.copy();
+}