I2S GPIO pins?

[zalaking]

Looking for some help - trying to enable the speaker for a Basic Core in ESPHome.

I need to enter the I2S info such as: .. =

i2s_audio:
i2s_lrclk_pin: GPIOxx
i2s_bclk_pin: GPIOxx

Can anything kindly confirm which GPIO pins show I use for this? Thanks

[felmue]

Hello @zalaking

M5Stack Basic speaker uses PWM (GPIO25) and not I2S.

Thanks
Felix

[zalaking]

many thanks @felmue - got that working via PWM as suggested - THANK YOU!!

do the later models, e.g. Core 3 use i2S?

[mtylerjr]

@zalaking The schematic shows the following I2S pins on the CoreS3:

GPIO00 I2S_LRCK, (Mic MCLK)
GPIO13 I2S_DOUT/DAT0
GPIO14 I2S_DIN/DAT1
GPIO33 I2S_WCK (Mic)
GPIO34 I2S_BCK (Mic)