base-adc-a2dp ---> basic-a2dp-audioi2s ... no data receive at receiver

[aqildad-create]

use above 2 fle wth below changes
1: //#include "AudioConfigLocal.h"
2: make the naming same for A2DP sender and receiver .

no data receive at receiver . seem esps are not connecting .

pre test : receiver is connecting and receive data from mobile . ( while perform above test of two esps i keep the mobile switch off so that esp not connect with mobile ) so may be some thing with sender .

attaches is the exact sketch I used .
sender.txt
receaver.txt

[aqildad-create]

after changing the sender/source to below then its working and receiving data ? so what's wrong with base sender/source ?

#include "AudioTools.h"
#include "AudioLibs/AudioA2DP.h"

const uint16_t sample_rate = 44100;
AnalogAudioStream in;

// A2DPStream a2dpStream = A2DPStream::instance(); // access A2DP as stream
A2DPStream a2dpStream;
VolumeStream volume(a2dpStream);
StreamCopy copier(volume, in); // copy i2sStream to a2dpStream
ConverterAutoCenter<int16_t> converter;

void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
AudioLogger::instance().begin(Serial, AudioLogger::Info);
volume.setVolume(22.3);

// start bluetooth
Serial.println("starting A2DP...");
auto cfgA2DP = a2dpStream.defaultConfig(TX_MODE);
cfgA2DP.name = "a2dp-i2s";
a2dpStream.begin(cfgA2DP);

auto cfgRx = in.defaultConfig(RX_MODE);
cfgRx.sample_rate = sample_rate;
in.begin(cfgRx);
}

void loop() {
// put your main code here, to run repeatedly:
copier.copy(converter);
}

[aqildad-create]

above base-a2dp still not connecting .

I have INMP441 and below code s connecting success with above base receiver / sink but sound very distorted .

I feel their is some wrong with my i2s configuration or conversion .

below is the code of sender

/**

• @file streams-i2s-a2dp.ino
• @author Phil Schatzmann
• @brief see https://github.com/pschatzmann/arduino-audio-tools/blob/main/examples/examples-stream/streams-i2s-a2dp/README.md
• @author Phil Schatzmann
• @copyright GPLv3
  */

#include "AudioTools.h"
#include "AudioLibs/AudioA2DP.h"

I2SStream i2sStream; // Access I2S as stream
A2DPStream a2dpStream; // access A2DP as stream
VolumeStream volume(a2dpStream);
//StreamCopy copier(volume, conv); // copy i2sStream to a2dpStream
ConverterFillLeftAndRight<int16_t> filler(LeftIsEmpty); // fill both channels
FormatConverterStream conv(a2dpStream);
//FormatConverterStream conv(a2dpStream);

StreamCopy copierr(conv, i2sStream);
// Arduino Setup
void setup(void) {
Serial.begin(115200);
AudioLogger::instance().begin(Serial, AudioLogger::Info);

// set intial volume
volume.setVolume(0.3);

// start bluetooth
Serial.println("starting A2DP...");
auto cfgA2DP = a2dpStream.defaultConfig(TX_MODE);
cfgA2DP.name = "MyReceiver";
cfgA2DP.auto_reconnect = true;
a2dpStream.begin(cfgA2DP);

auto config_in = i2sStream.defaultConfig(RX_MODE);
config_in.i2s_format = I2S_STD_FORMAT; // or try with I2S_LSB_FORMAT | I2S_STD_FORMAT
config_in.is_master = true;
config_in.use_apll = false; // try with yes
config_in.pin_mck = 3;
config_in.bits_per_sample = 32;
config_in.channels = 2;
config_in.sample_rate = 44100;
i2sStream.begin(config_in);
AudioInfo from(44100, 2, 32);
AudioInfo to (44100, 2, 16);

conv.begin(from, to);

}

// Arduino loop - copy data
void loop() {
// copier.copy(filler);
copierr.copy();
// copier.copy(filler);
}

[aqildad-create]

below s base -a2dp
why it is not connecting also why it is continuous resetting after some time ?
/**

• @file base-i2s-a2dp.ino
• @author Phil Schatzmann
• @brief see https://github.com/pschatzmann/arduino-audio-tools/blob/main/examples/base-i2s-a2dp/README.md
• @copyright GPLv3
  */

#include "AudioTools.h"
#include "AudioLibs/AudioA2DP.h"

/**

• @brief We use a INMP441 I2S microphone as input and send the data to A2DP
• Unfortunatly the data type from the microphone (int32_t) does not match with the required data type by A2DP (int16_t),
• so we need to convert.
  */

BluetoothA2DPSource a2dp_source;
I2SStream i2s;
ConverterFillLeftAndRight<int16_t> bothChannels(LeftIsEmpty);
const size_t max_buffer_len = 150;
const int channels = 2;
const size_t max_buffer_bytes = max_buffer_len * sizeof(int16_t) * channels;
uint8_t buffer[max_buffer_bytes]={0};

// callback used by A2DP to provide the sound data - usually len is 128 2 channel int16 frames
int32_t get_sound_data(Frame* data, int32_t len) {
size_t req_bytes = min(max_buffer_bytes, len2sizeof(int16_t));
// the microphone provides data in int32_t -> we read it into the buffer of int32_t data so 2
size_t result_bytes = i2s.readBytes((uint8_t)buffer, req_bytes2);
// we have data only in 1 channel but we want to fill both
return bothChannels.convert((uint8_t)buffer, result_bytes);
}

// Arduino Setup
void setup(void) {
Serial.begin(115200);
//AudioLogger::instance().begin(Serial, AudioLogger::Info);
AudioLogger::instance().begin(Serial, AudioLogger::Debug);
// start i2s input with default configuration
Serial.println("starting I2S...");
auto cfg = i2s.defaultConfig(RX_MODE);
cfg.i2s_format = I2S_STD_FORMAT; // or try with I2S_LSB_FORMAT
cfg.bits_per_sample = 16;
cfg.channels = 2;
cfg.sample_rate = 44100;
cfg.is_master = true;
i2s.begin(cfg);

// start the bluetooth
Serial.println("starting A2DP...");
a2dp_source.set_auto_reconnect(false);
a2dp_source.start("MyReceiver", get_sound_data);
}

// Arduino loop - repeated processing
void loop() {
delay(1000);
bool don;

}

[pschatzmann]

I am pretty sure you left the speaker in a state that would not accept any connections: See pschatzmann/ESP32-A2DP#439