ESP32-S2 support

[Sani300]

Hi,

Thanks a lot for your work !
I try the new chip ESP32-S2 and it seem that there are some internal changes with DAC/DMA.
Did you plan a new version of your library to be compatible to ESP32-S2?

Sani300

[schreibfaul1]

The S2 is not as powerful as the ESP32, it will not work smoothly

[Sani300]

Oh really? In terme of what ? If we just want to stream something, or play a little song from internal memory?

[schreibfaul1]

The ESP32 -S2 used is the Arduino version 2.0.0-alpha1. There are some new I2S constants that can be inserted into the source text (are commented out in the source text (i2s_comm_format_t) (I2S_COMM_FORMAT_STAND_I2S);) then the library can be compiled. And the file directory differentiates now between 'path' and 'name'?

[Sani300]

Can you give me more information to succeed in complier? I am not able complie even un Arduino 2.0.0-alpha1.

[Sani300]

I have done this in i2s_types.h

typedef enum {
    // In order to keep compatibility, remain the old definitions and introduce new definitions,
    //I2S_COMM_FORMAT_STAND_I2S   = 0X01, /*!< I2S communication I2S Philips standard, data launch at second BCK*/
    //I2S_COMM_FORMAT_STAND_MSB   = 0X03, /*!< I2S communication MSB alignment standard, data launch at first BCK*/
    //I2S_COMM_FORMAT_STAND_PCM_SHORT  = 0x04, /*!< PCM Short standard, also known as DSP mode. The period of synchronization signal (WS) is 1 bck cycle.*/
    //I2S_COMM_FORMAT_STAND_PCM_LONG   = 0x0C, /*!< PCM Long standard. The period of synchronization signal (WS) is channel_bit*bck cycles.*/
    //I2S_COMM_FORMAT_STAND_MAX, /*!< standard max*/

    //old definition will be removed in the future.
    I2S_COMM_FORMAT_I2S       = 0x01, /*!< I2S communication format I2S, correspond to `I2S_COMM_FORMAT_STAND_I2S`*/
    I2S_COMM_FORMAT_I2S_MSB   = 0x01, /*!< I2S format MSB, (I2S_COMM_FORMAT_I2S |I2S_COMM_FORMAT_I2S_MSB) correspond to `I2S_COMM_FORMAT_STAND_I2S`*/
    I2S_COMM_FORMAT_I2S_LSB   = 0x02, /*!< I2S format LSB, (I2S_COMM_FORMAT_I2S |I2S_COMM_FORMAT_I2S_LSB) correspond to `I2S_COMM_FORMAT_STAND_MSB`*/
    I2S_COMM_FORMAT_PCM       = 0x04, /*!< I2S communication format PCM, correspond to `I2S_COMM_FORMAT_STAND_PCM_SHORT`*/
    I2S_COMM_FORMAT_PCM_SHORT = 0x04, /*!< PCM Short, (I2S_COMM_FORMAT_PCM | I2S_COMM_FORMAT_PCM_SHORT) correspond to `I2S_COMM_FORMAT_STAND_PCM_SHORT`*/
    I2S_COMM_FORMAT_PCM_LONG  = 0x08, /*!< PCM Long, (I2S_COMM_FORMAT_PCM | I2S_COMM_FORMAT_PCM_LONG) correspond to `I2S_COMM_FORMAT_STAND_PCM_LONG`*/
} i2s_comm_format_t;

and comment :

//#if SOC_I2S_SUPPORTS_ADC_DAC
/**
 * @brief I2S DAC mode for i2s_set_dac_mode.
 *
 * @note PDM and built-in DAC functions are only supported on I2S0 for current ESP32 chip.
 */
typedef enum {
    I2S_DAC_CHANNEL_DISABLE  = 0,    /*!< Disable I2S built-in DAC signals*/
    I2S_DAC_CHANNEL_RIGHT_EN = 1,    /*!< Enable I2S built-in DAC right channel, maps to DAC channel 1 on GPIO25*/
    I2S_DAC_CHANNEL_LEFT_EN  = 2,    /*!< Enable I2S built-in DAC left  channel, maps to DAC channel 2 on GPIO26*/
    I2S_DAC_CHANNEL_BOTH_EN  = 0x3,  /*!< Enable both of the I2S built-in DAC channels.*/
    I2S_DAC_CHANNEL_MAX      = 0x4,  /*!< I2S built-in DAC mode max index*/
} i2s_dac_mode_t;
//#endif //SOC_I2S_SUPPORTS_ADC_DAC

[MarkusLange]

Looks like espressif thinks the ESP32-S2 can handle it:

https://docs.espressif.com/projects/esp-idf/en/latest/esp32s2/api-reference/peripherals/i2s.html

[MarkusLange]

There is a simple Sample for the ESP32-S2

https://github.com/HX2003/ESP32-I2S-Simple-Async-Audio