External ADC (I2S) -> External DAC (I2S)

[gurinkirill]

Hello, @pschatzmann! Thank you for you lib. I have a question.
I try to get signal from external ADC with I2S and send it to external DAC - I2S too.

#include "Arduino.h"
#include "AudioTools.h"

AudioInfo info(8000, 2, 16);
I2SStream out;
I2SStream in;
StreamCopy copier(out, in);

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

    auto configAdc = in.defaultConfig(RX_MODE);
    configAdc.pin_bck = 33;
    configAdc.pin_ws = 25;
    configAdc.pin_data = 32;
    configAdc.set(info);
    configAdc.i2s_format = I2S_STD_FORMAT; // or try with I2S_LSB_FORMAT
    configAdc.is_master = true;
    // this module nees a master clock if the ESP32 is master
    configAdc.use_apll = false;  // try with yes
    configAdc.pin_mck = 3;
    in.begin(configAdc);

    auto configDac = out.defaultConfig(TX_MODE);
    configDac.pin_bck = 14;
    configDac.pin_ws = 26;
    configDac.pin_data = 27;
    configDac.set(info);
    out.begin(configDac);
}

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

It doesn't work. I think that it tries to use one I2S to set dac and adc, but should use one for adc and another one for dac.

Logs:

E (266) esp_core_dump_flash: Core dumвђЂвђ†"пїЅС…пїЅcheck failed:
Calculated checksum='2d24d331'
Image checksum='ffffffff'
[I] AudioTypes.h : 126 - sample_rate: 8000
[I] AudioTypes.h : 127 - channels: 2
[I] AudioTypes.h : 128 - bits_per_sample: 16
[I] AudioTypes.h : 126 - sample_rate: 8000
[I] AudioTypes.h : 127 - channels: 2
[I] AudioTypes.h : 128 - bits_per_sample: 16
[I] I2SConfigESP32.h : 80 - rx/tx mode: RX_MODE
[I] I2SConfigESP32.h : 81 - port_no: 0
[I] I2SConfigESP32.h : 82 - is_master: Master
[I] I2SConfigESP32.h : 83 - sample rate: 8000
[I] I2SConfigESP32.h : 84 - bits per sample: 16
[I] I2SConfigESP32.h : 85 - number of channels: 2
[I] I2SConfigESP32.h : 86 - signal_type: Digital
[I] I2SConfigESP32.h : 88 - i2s_format: I2S_STD_FORMAT
[I] I2SConfigESP32.h : 90 - auto_clear: false
[I] I2SConfigESP32.h : 97 - buffer_count:6
[I] I2SConfigESP32.h : 98 - buffer_size:512
[I] I2SConfigESP32.h : 101 - pin_mck: 3
[I] I2SConfigESP32.h : 103 - pin_bck: 33
[I] I2SConfigESP32.h : 105 - pin_ws: 25
[I] I2SConfigESP32.h : 107 - pin_data: 32
[I] AudioTypes.h : 126 - sample_rate: 8000
[I] AudioTypes.h : 127 - channels: 2
[I] AudioTypes.h : 128 - bits_per_sample: 16
[I] AudioTypes.h : 126 - sample_rate: 8000
[I] AudioTypes.h : 127 - channels: 2
[I] AudioTypes.h : 128 - bits_per_sample: 16
[I] I2SConfigESP32.h : 80 - rx/tx mode: TX_MODE
[I] I2SConfigESP32.h : 81 - port_no: 0
[I] I2SConfigESP32.h : 82 - is_master: Master
[I] I2SConfigESP32.h : 83 - sample rate: 8000
[I] I2SConfigESP32.h : 84 - bits per sample: 16
[I] I2SConfigESP32.h : 85 - number of channels: 2
[I] I2SConfigESP32.h : 86 - signal_type: Digital
[I] I2SConfigESP32.h : 88 - i2s_format: I2S_STD_FORMAT
[I] I2SConfigESP32.h : 90 - auto_clear: true
[I] I2SConfigESP32.h : 92 - use_apll: true
[I] I2SConfigESP32.h : 97 - buffer_count:6
[I] I2SConfigESP32.h : 98 - buffer_size:512
[I] I2SConfigESP32.h : 103 - pin_bck: 14
[I] I2SConfigESP32.h : 105 - pin_ws: 26
[I] I2SConfigESP32.h : 107 - pin_data: 27
E (179) I2S: register I2S object to platform failed
[E] I2SESP32.h : 214 - begin - i2s_driver_install
E (181) I2S: i2s_write(2128): TX mode is not enabled
[E] I2SESP32.h : 102 - size_t audio_tools::I2SDriverESP32::writeBytes(const void*, size_t)
E (195) I2S: i2s_write(2128): TX mode is not enabled
[E] I2SESP32.h : 102 - size_t audio_tools::I2SDriverESP32::writeBytes(const void*, size_t)
[I] StreamCopy.h : 369 - try write  - 2 (open 1024 bytes) 
E (218) I2S: i2s_write(2128): TX mode is not enabled

[pschatzmann]

You forgot to specify the port number: so both use the default port number which is 0. The internal DAC can only be on 0 so the external DAC must be using 1!