using esp01 without spi ram, but with i2s codec

[eamonwhiter73]

I see it says:

ESP pin - I2S signal

GPIO2/TX1 - LRCK
GPIO3/RX0 - DATA
GPIO15 - BCLK

Can I reassign GPIO15 by doing find and replace on GPIO_ID_PIN(15) and BIT(15) in the code, and reassign, or do I only need to worry about GPIO_ID_PIN(15). A am trying to adapt this tutorial to the ESP8266-01. Is it possible to do this?

[GeorgeHahn]

This may not be possible - that pin is connected to the I2S bit clock. You'll need to check the ESP8266 datasheet to see if it's possible to use another pin for the I2S bit clock.

Here's the line where that's setup:

ESP8266_MP3_DECODER/mp3/driver/i2s_freertos.c

Line 178 in 7552a62

PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTDO_U, FUNC_I2SO_BCK);

Judging by this code, it doesn't look like that signal is available on another pin.

[eamonwhiter73]

cool thanks, you saved me some time :) ... but I got some soldering practice in.