AudioKit Support and Prepare RP2040

Author: pschatzmann

examples/examples-basic-api/basic-a2dp-audiokit/README.md

@@ -0,0 +1,14 @@
+## Using the AI Thinker ESP32 Audio Kit as A2DP Receiver
+
+I found some cheap [AI Thinker ESP32 Audio Kit V2.2](https://docs.ai-thinker.com/en/esp32-audio-kit) on AliExpress.
+
+<img src="https://pschatzmann.github.io/arduino-audio-tools/resources/audio-toolkit.png" alt="Audio Kit" />
+
+I am using the data callback of the A2DP library to feed the AudioKitStream
+
+You dont need to bother about any wires because everything is on one nice board. Just just need to install the dependencies:
+
+## Dependencies
+
+- https://github.com/pschatzmann/arduino-audio-tools
+- https://github.com/pschatzmann/ESP32-A2DP

examples/examples-basic-api/basic-a2dp-audiokit/basic-a2dp-audiokit.ino

@@ -0,0 +1,26 @@
+#define USE_A2DP
+#include "AudioTools.h"
+#include "AudioDevices/ESP32AudioKit/AudioKit.h"
+
+BluetoothA2DPSink a2dp_sink;
+AudioKitStream kit;
+
+// Write data to AudioKit in callback
+void read_data_stream(const uint8_t *data, uint32_t length) {
+    kit.write(data, length);
+}
+
+void setup() {
+  AudioLogger::instance().begin(Serial, AudioLogger::Info);
+
+  // setup output
+  auto cfg = kit.defaultConfig(TX_MODE);
+  cfg.default_volume = 50;
+  kit.begin(cfg);
+
+  // register callback
+  a2dp_sink.set_stream_reader(read_data_stream, false);
+  a2dp_sink.start("AudioKit");
+}
+
+void loop() {}

examples/examples-player/player-sd-audiokit/README.md

@@ -0,0 +1,13 @@
+## 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/arduino-audio-tools/resources/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:
+
+## Dependencies
+
+- https://github.com/pschatzmann/arduino-audio-tools
+- https://github.com/pschatzmann/arduino-libhelix
+- https://github.com/greiman/SdFat

examples/examples-player/player-sd-audiokit/player-sd-audiokit.ino

@@ -0,0 +1,40 @@
+/**
+ * @file player-sd-audiokit.ino
+ * @brief see https://github.com/pschatzmann/arduino-audio-tools/blob/main/examples/examples-player/player-sd-audiokit/README.md
+ * 
+ * @author Phil Schatzmann
+ * @copyright GPLv3
+ */
+
+// set this in AudioConfig.h or here after installing https://github.com/pschatzmann/arduino-libhelix.git
+#define USE_SDFAT
+#define USE_HELIX
+#include "AudioTools.h"
+#include "AudioDevices/ESP32AudioKit/AudioKit.h"
+
+using namespace audio_tools;  
+
+const char *startFilePath="/";
+const char* ext="mp3";
+int speedMz = 10;
+AudioSourceSdFat source(startFilePath, ext, PIN_AUDIO_KIT_SD_CARD_CS, speedMz);
+AudioKitStream i2s;
+MP3DecoderHelix decoder;
+AudioPlayer player(source, i2s, decoder);
+
+
+void setup() {
+  Serial.begin(115200);
+  AudioLogger::instance().begin(Serial, AudioLogger::Info);
+
+  // setup output
+  auto cfg = i2s.defaultConfig(TX_MODE);
+  i2s.begin(cfg);
+  
+  // setup player
+  player.begin();
+}
+
+void loop() {
+  player.copy();
+}

examples/examples-stream/streams-adc-serial/streams-adc-serial.ino

@@ -20,6 +20,7 @@ ConverterAutoCenter<int16_t> center;          // make sure the avg of the signal
 void setup(void) {  
   // Open Serial 
   Serial.begin(115200);
+  AudioLogger::instance().begin(Serial, AudioLogger::Warning);
 
   AnalogConfig cfg = microphone.defaultConfig(RX_MODE);
   microphone.begin(cfg);

examples/examples-stream/streams-ads1015-serial/streams-ads1015-serial.ino

@@ -22,8 +22,9 @@ StreamCopy copier(out, sound);                             // copies sound into
 void setup(void) {  
   // Open Serial 
   Serial.begin(115200);
+  AudioLogger::instance().begin(Serial, AudioLogger::Info);
 
-  // start the bluetooth
+  // start I2S
   Serial.println("starting I2S...");
   auto config = out.defaultConfig(TX_MODE);
   config.sample_rate = sample_rate; 
@@ -33,6 +34,7 @@ void setup(void) {
 
   // Setup sine wave
   sineWave.begin(channels, sample_rate, N_B4);
+  Serial.println("started...");
 }
 
 // Arduino loop - copy sound to out 

examples/examples-stream/streams-generator-i2s/streams-generator-i2s.ino

@@ -22,6 +22,7 @@ StreamCopy copier(printer, sound);                         // copies sound into
 void setup(void) {  
   // Open Serial 
   Serial.begin(115200);
+  AudioLogger::instance().begin(Serial, AudioLogger::Info);
 
   // Setup sine wave
   sineWave.begin(channels, sample_rate, N_B4);

examples/examples-stream/streams-generator-serial/streams-generator-serial.ino

@@ -23,6 +23,7 @@ StreamCopyT<int16_t> copier(i2s, music); // copies sound into i2s
 
 void setup(){
     Serial.begin(115200);
+    AudioLogger::instance().begin(Serial, AudioLogger::Info);
 
     auto config = i2s.defaultConfig(TX_MODE);
     config.sample_rate = sample_rate;

examples/examples-stream/streams-memory_raw-i2s/streams-memory_raw-i2s.ino

@@ -25,7 +25,6 @@ StreamCopy copier(out, wav);    // copy in to out
 
 void setup(){
   Serial.begin(115200);
-  while(!Serial);
   AudioLogger::instance().begin(Serial, AudioLogger::Info);  
 
   auto config = pwm.defaultConfig();