A1S Audiokit - I2C connection with ES8388 and another device, e.g. 20x4 LCD

[devwmbr]

Hello,

I started successfuly ESP32 A1S example ( https://github.com/schreibfaul1/ESP32-audioI2S/tree/master/examples/ESP32_A1S ) on my A1S Audio kit (v2.2, A436), but I have problem with 20x4 alphanumeric LCD via I2C connection on pins IO21, IO22 (pcb top right connector ). The display itself working ok on Audiokit, but with together example, Serial.print() returns DAC connection failed.
My version Audiokit properly works with 32 and 33 I2C pins like in oryginal .ino example (lines 36-37 in .ino file).
I saw that object creating order in Setup() matters.
If I create like this:

LCD.begin();
while (not dac.begin(IIC_DATA, IIC_CLK))
    {
        Serial.printf("Failed!\n");
        delay(1000);
    }

display working ok, but DAC connection failed.
If I create like this:

while (not dac.begin(IIC_DATA, IIC_CLK))
    {
        Serial.printf("Failed!\n");
        delay(1000);
    }
LCD.begin();

display is only backlighted, DAC connection is OK

Is there any conflict with 21,22 I2C and internal 32,33 I2C?

Regards
Devwmbr

[schreibfaul1]

maybe like this:

TwoWire i2cBusOne = TwoWire(0);
TwoWire i2cBusTwo = TwoWire(1);
ES8388 dac(&i2cBusOne);
if(!dac.begin(I2C_DAC_SDA, I2C_DAC_SCL, 400000)) { log_e("The DAC was not be initialized"); }
....

[devwmbr]

Hello,
Yesterday evening I tried another library: LiquidCrystal_PCF8574 where author in comment section gave example similar like yours
and now working great.
Currently my code looks like below:

#include "LiquidCrystal_PCF8574.h"
TwoWire Wire_1 = TwoWire(0x27);
LiquidCrystal_PCF8574 lcd(0x27);

void setup()
{
 // oryginal source without any changes

    /* LCD  */
    Wire_1.begin(21, 22);      // custom i2c port on ESP
    Wire_1.setClock(100000);   // standard 100kHz speed
    lcd.begin(16, 2, Wire_1);
    lcd.setBacklight(255);


 // oryginal source without any changes

}

I will try today evening your approach.
Thank you very much.

Regards

[github-actions]

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