Audiokit , how to make sd player go a2dp source ??

[TangerineDreamer]

Hi, i'm sruggling with it today,there is no examples with SD player and A2P source,
only with A2P SINK,here is my sketch try:

/--------------------------------------------------------

#define USE_SDFAT
#include "AudioTools.h"
#include "AudioLibs/AudioKit.h"
#include "AudioLibs/AudioSourceSDFAT.h"
#include "AudioCodecs/CodecMP3Helix.h"
#include "AudioLibs/AudioA2DP.h"

const char startFilePath="/";
const char ext="mp3";
BluetoothA2DPSource a2dp_source;

SdSpiConfig sdcfg(PIN_AUDIO_KIT_SD_CARD_CS, DEDICATED_SPI, SD_SCK_MHZ(10) , &AUDIOKIT_SD_SPI);
AudioSourceSDFAT source(startFilePath, ext, sdcfg);
MP3DecoderHelix decoder;

AudioKitStream i2s;
AudioPlayer player(source, i2s, decoder);

const int16_t BYTES_PER_FRAME = 4;

// 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 frameCount) {
return i2s.readBytes((uint8_t*)data, frameCount*BYTES_PER_FRAME)/BYTES_PER_FRAME;
}

void next(bool, int, void*) {
player.next();
}

void previous(bool, int, void*) {
player.previous();
}

void setup() {
Serial.begin(115200);
AudioLogger::instance().begin(Serial, AudioLogger::Info);

// start i2s input with default configuration
Serial.println("starting I2S...");
auto cfg = i2s.defaultConfig(RXTX_MODE);
cfg.sd_active = true;

cfg.bits_per_sample = 16;
cfg.channels = 2;
cfg.sample_rate = 44100;

i2s.begin(cfg);

// setup additional buttons
i2s.addAction(PIN_KEY4, next);
i2s.addAction(PIN_KEY3, previous);

// setup player
player.setVolume(0.7);
player.begin();

// start the bluetooth
Serial.println("starting A2DP...");
a2dp_source.start("ESPAT Musik", get_sound_data);
}

void loop() {
player.copy();
i2s.processActions();
}

//--------------------------------------------------------------

I guess that " player.copy();" does not make the deal
I was more easy to make line input go to a2dp source.
Mr shatzmann,how do you do ?......(the sketch of course) :)

[pschatzmann]

What's wrong with this example: https://github.com/pschatzmann/arduino-audio-tools/tree/main/examples/examples-player/player-sdfat-a2dp ?

[TangerineDreamer]

That's make my audiokit reboot after connecting,here is the log:

[W] AudioA2DP.h : 302 - ==> state: Connecting
[W] AudioA2DP.h : 302 - ==> state: Connected
[E] AudioSourceSDFAT.h : 89 - sd.begin failed
[E] SDDirect.h : 231 - Guru Meditation Error: Core 1 panic'ed (LoadProhibited). Exception was unhandled.

Core 1 register dump:
PC : 0x40091531 PS : 0x00060330 A0 : 0x8018d56c A1 : 0x3ffcafb0
A2 : 0x00000000 A3 : 0xfffffffc A4 : 0x000000ff A5 : 0x0000ff00
A6 : 0x00ff0000 A7 : 0xff000000 A8 : 0x00000000 A9 : 0x3ffcb280
A10 : 0x00000003 A11 : 0x00060323 A12 : 0x00060320 A13 : 0x0000ff00
A14 : 0x00ff0000 A15 : 0xff000000 SAR : 0x0000001b EXCCAUSE: 0x0000001c
EXCVADDR: 0x00000000 LBEG : 0x40091531 LEND : 0x40091541 LCOUNT : 0xffffffff

Backtrace:0x4009152e:0x3ffcafb00x4018d569:0x3ffcafc0 0x4018a6f5:0x3ffcb2d0 0x400d65c7:0x3ffcb390 0x400d6b96:0x3ffcb3b0 0x400d6f72:0x3ffcb480 0x400d5e08:0x3ffcb4a0 0x400d5f39:0x3ffcb4c0 0x400e0cca:0x3ffcb520

ELF file SHA256: 0000000000000000

Rebooting...

[pschatzmann]

Did you replace the I2SStream with the AudioKitStream and activate the SD correctly ?
https://github.com/pschatzmann/arduino-audio-tools/wiki/The-Audio-Player-Class
https://github.com/pschatzmann/arduino-audiokit/wiki/Problems-with-the-SD-Drive-or-some-conflicting-Buttons

And please learn how to decode the stacktrace: https://github.com/me-no-dev/EspExceptionDecoder

[TangerineDreamer]

Now the sd card is ok,i can hear it in the headphones,but not via the bluetooth,only the 2 mics
are passing on the air,but i don't want them,i've no line input while the mics are hearded.
here is my code:

//--------------------------------------------------------------

/**

• @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 "AudioLibs/AudioKit.h"
#include "AudioLibs/AudioA2DP.h"
#include "AudioLibs/AudioSourceSDFAT.h"
#include "AudioCodecs/CodecMP3Helix.h"

BluetoothA2DPSource a2dp_source;

const char startFilePath="/";
const char ext="mp3";
SdSpiConfig sdcfg(PIN_AUDIO_KIT_SD_CARD_CS, DEDICATED_SPI, SD_SCK_MHZ(10) , &AUDIOKIT_SD_SPI);
AudioSourceSDFAT source(startFilePath, ext, sdcfg);

AudioKitStream i2s;
MP3DecoderHelix decoder;

const int16_t BYTES_PER_FRAME = 4;

// 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 frameCount) {
return i2s.readBytes((uint8_t*)data, frameCount*BYTES_PER_FRAME)/BYTES_PER_FRAME;
}

AudioPlayer player(source,i2s, decoder);

void setup() {
Serial.begin(115200);
AudioLogger::instance().begin(Serial, AudioLogger::Warning);

auto cfg = i2s.defaultConfig(RXTX_MODE);
cfg.bits_per_sample = 16;
cfg.channels = 2;
cfg.sample_rate = 44100;

cfg.sd_active = true;
i2s.begin(cfg);

// setup player
player.setVolume(0.8);
player.begin();

// start the bluetooth
Serial.println("starting A2DP...");
a2dp_source.start("My Musik", get_sound_data);

}

void loop() {
player.copy();
}

//--------------------------------------------------------------------

I have no really errors in the monitor log:

//---------------------------------------------------------
[W] AudioKit.h : 51 - sd_active = true
[W] AudioKit.h : 602 - Mode Button ignored because of conflict: 13
[W] AudioKit.h : 610 - Headphone detection ignored because of conflict: 5
starting A2DP...
[W] AudioPlayer.h : 309 - -> timeout - moving to next stream
[W] AudioPlayer.h : 309 - -> timeout - moving to next stream
[W] AudioPlayer.h : 309 - -> timeout - moving to next stream
//---------------------------------------------------------------------------

my switches are 0-1-1-0-0, board-->(6)

[pschatzmann]

Forget my comment about replacing the I2SStream with the AudioKitStream. I got confused...
Your sketch above is a big mess and I don't understand what you are doing: In the initial issue you write that you want the Audio Player to play to A2DP but in you sketch you copy the microphone data to A2DP and use the Audio Player at the same time!

Just use the sketch that I proposed above. The only issue with this is that, since you don't need any AudioKitStream, the SPI does not get initialized and you need to do it yourself.

I added a section to the documentation how to do this. Or alternatively use SDMMC...

[TangerineDreamer]

But i had SD issues with the sketch you suggested,not with my last one,i only need to synthetize in mind the use of those functions and
i believe it's good to make it more clear:

// 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 frameCount) {
return i2s.readBytes((uint8_t*)data, frameCount*BYTES_PER_FRAME)/BYTES_PER_FRAME;
}

As i try to understand,A2DP take in the frames ,like a streamcopy by frame ,what going out of the audiokit (i2s),and it's not
by using the copier function in the loop,am i right?

AudioPlayer player(source,i2s, decoder);
Now i think the audio processing take out (the source : SD) ,via the (decoder), to headphones (i2s), what is going in the audiokit,i think the SD player is natively connected to the input of the audiokit,and i can change by setting the INPUT:INPUT_LINE2 (or something like that),
but the AudioPlayer wait for SD data but have nothing,so it switches to the next input stream : the MICS,and that's why i hear them in
the bluetooth speaker am i right?

Then i tried to write : AudioPlayer player(source, A2DP_source, decoder); and it said AudioPlayer class don't allow that.
All i want ,is to connect the SD player of the audiokit to A2DP,but there is no INPUT_SD define in the settings.

I'm sure i'm not alone to be confused with all of that :)

[pschatzmann]

int32_t get_sound_data(Frame* data, int32_t frameCount) {
return i2s.readBytes((uint8_t*)data, frameCount*BYTES_PER_FRAME)/BYTES_PER_FRAME;
}
Is reading the data from the Audiokit Microphone using the A2DP Callback directly.
The AudioPlayer is asking for an Audio Sink and you provide I2S (which is the amplifier of the audiokit), but you need to have a Stream that sends the data to A2DP...

All you need to do is take this example and make sure that the SD is working, by initializing SPI or by using SDMMC

As an excercise it might be even helpful if you try create a learning test sketch which opens and reads a file!

[TangerineDreamer]

That's not the SD that makes problem,i've incorporate the SD MMC in the sketch and the result is ok.
Now it says : connecting then disconnected all the time without to be connected for sure.
What's the difference between AudioKitHAL.h and AudioKit.h?

[pschatzmann]

Maybe https://github.com/pschatzmann/ESP32-A2DP/wiki/Auto-Reconnect helps.
Connecting might take quite some time. Make sure that no other device is connected: sometimes this happens automatically!

AudioKit.h is the stream API from the Audio Tools which is using AudioKitHAL.h which is part of the AudioKit HAL Project

[TangerineDreamer]

a2dp_source.set_auto_reconnect(true) does not work,same for : out.set_auto_reconnect(true)
it's not recognized.
before i tried: cfg2.auto_reconnect = true;,no problem for compiling but the problem is told above.

[pschatzmann]

The issue is that is might be set to true: Change it to false!
Did you deactivate the bluetooth of all other devices that might connect ?
What device are you trying to connect to ?

[TangerineDreamer]

i have a esp32 wrover near at 10 cm from the sender, my pc is windows 7 ,no bluetooth i believe,
it's weird because all my other sketches worked fine with bluetooth.
The example you suggested is with a single esp32 and an external SD player,surely i can do it with
success,but did you try and succeed what i'm doing with the internal audiokit SD player ?

[pschatzmann]

The problem is not with your audiokit but with your bluetooth speaker that does not accept any connect request. If it is not working with an audiokit it will not work with an ESP32 as well.

I always recommend to start simple: so to test A2DP you should have used the https://github.com/pschatzmann/arduino-audio-tools/tree/main/examples/examples-stream/streams-generator-a2dp sketch first...

Did you try to restart the Bluetooth Speaker. Maybe it is just hanging...
You can also activate the ESP32 logging in Arduino to see what's going one in detail.

[TangerineDreamer]

Oh,it's not a real bluetooth speaker,only a esp32 receiver ,with a basic sketch from your's:

//-------------------------------------------------------

#include "BluetoothA2DPSink.h"

BluetoothA2DPSink a2dp_sink;

void setup() {

//---------PIN CONFIG------------
i2s_pin_config_t my_pin_config = {
.bck_io_num = 26,
.ws_io_num = 25,
.data_out_num = 22,
.data_in_num = I2S_PIN_NO_CHANGE
};
a2dp_sink.set_pin_config(my_pin_config);
//-------------------------------------

//------------I2S CONFIG---------------
static i2s_config_t i2s_config = {
.mode = (i2s_mode_t) (I2S_MODE_MASTER | I2S_MODE_TX),
.sample_rate = 44100, // updated automatically by A2DP
.bits_per_sample = (i2s_bits_per_sample_t)16,
.channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT,
.communication_format = (i2s_comm_format_t) (I2S_COMM_FORMAT_STAND_I2S),
.intr_alloc_flags = 0, // default interrupt priority
.dma_buf_count = 8,
.dma_buf_len = 64,
.use_apll = true,
.tx_desc_auto_clear = true // avoiding noise in case of data unavailability
};
a2dp_sink.set_i2s_config(i2s_config);
//-----------------------------------------

a2dp_sink.start("My Musik");

}

void loop() {
}

//---------------------------------------------------------------------

[pschatzmann]

Hmm, that should work as well: Make sure on that sketch that the auto reconnect is as well disabled!

[TangerineDreamer]

bad thing,it can't compile because it makes a very very long text in the verbose monitor and makes the memory full,i'm back to downgrade to 2.01,'cause the 2.02 disapeared

[pschatzmann]

I did some tests with the audiokit with sdfat -> a2dp, but there are quite a few issues there as well, that I need to look into..

[TangerineDreamer]

I can believe you, i have : sd.begin failed after connected in "player-sdfat-a2dp"

[W] AudioA2DP.h : 302 - ==> state: Connecting
[W] AudioA2DP.h : 302 - ==> state: Connected
[E] AudioSourceSDFAT.h : 89 - sd.begin failed
[E] SDDirect.h : 231 - Guru Meditation Error: Core 1 panic'ed (LoadProhibited). Exception was unhandled.

[pschatzmann]

The SDFAT is working perfectly: this issues are on the A2DP side...
https://github.com/pschatzmann/arduino-audio-tools/blob/main/examples/sandbox/player-audiokit_sdfat-a2dp/player-audiokit_sdfat-a2dp.ino

[TangerineDreamer]

when i incorporate audiokit.h in the player-sdfat-a2dp sketch,i have:

[W] AudioKit.h : 51 - sd_active = true
[W] AudioKit.h : 602 - Mode Button ignored because of conflict: 13
[W] AudioA2DP.h : 302 - ==> state: Connecting
[W] AudioA2DP.h : 302 - ==> state: Connected
[W] AudioA2DP.h : 209 - is_a2dp_active -> true with 59904 bytes //-->??? what is this?

[pschatzmann]

The audio data that is currently in the buffer for a2dp when it starts the processing

[TangerineDreamer]

It's a new sanbox sketch you put in,do i upload the new reposite to make it work?

[pschatzmann]

No need to update!
It is in the sandbox because it is not working properly yet...

[TangerineDreamer]

Ok,i have enough for today,i hope you'll find what is going wrong :)

[pschatzmann]

I will fix the file issues first. This is for another day...
#373

[TangerineDreamer]

Hi,
Just trying with the new library, have esp32 package 2.05
-audio kit sdfat player, works smoothly as usual in the speakers
-audiokit a2dp sink ,works well with smartphone,but not with audiotkit basic a2dp source (esp32 dev kit1)
-basic a2dp sink,(esp32 dev kit1) don't pair with bluetooth smartphone,don't work with any audiokit a2dp source
-basic audiokit a2dp source don't give anymore sound
-audiokit sdfat player a2dp gives this error compiling,this happened also before when i tried esp32 2.05,but not with 2.01:

Sketch uses 1347313 bytes (102%) of program storage space. Maximum is 1310720 bytes.
Global variables use 44372 bytes (13%) of dynamic memory, leaving 283308 bytes for local variables. Maximum is 327680 bytes.
Sketch too big; see https://support.arduino.cc/hc/en-us/articles/360013825179 for tips on reducing it.
text section exceeds available space in board
Compilation error: text section exceeds available space in board

Should i get the last esp32 libraries?

[pschatzmann]

Sketch uses 1347313 bytes (102%) of program storage space. Maximum is 1310720 bytes.
Just change the partition scheme to hugh app!

[TangerineDreamer]

How can i do that?

[TangerineDreamer]

ok have seen it,i'll give a try

[TangerineDreamer]

Ok,go back to esp32 package 2.02,everything now works as before but still problem with "audiokit sdfat a2dp source"

[TangerineDreamer]

Ok,problem solved,see topic #502,the working sketch is "base-player-a2dp" from the examples-basic-api.