Docs are here . Section 7.1 of the TRM: The ESP32-C6 chip features 31 GPIO pins. Each pin can be [...] connected to an internal peripheral signal. [...] peripheral input signals can be from any IO pins, and peripheral output signals can be routed to any IO pins. You don't want to use any of the pin...

When I looking for the i2c peripheral pins in some esp32 modules, I couldn't find anything in espressif website. Turns out all the gpio pins can be used as i2c. Is that true? I'm going to design my custom board, and I don't want to change the pins later.

MicroController wrote: ↑

Fri Jun 09, 2023 3:58 pm

Just configure each interface to use the pins you want, see e.g. here.

Does that mean I can use any pins for any peripherals?

I'm using esp32-c6 for my project and I need to use all the peripheral such as UART, I2C and SPI. But I can't use I2C and SPI together because they share the same pins. How can I solve this problem?

ESP_Sprite wrote: ↑

Wed Apr 26, 2023 12:58 am

Yes, you can. Either program the STM as a passthrough device (so anything on the PC can talk to the ESP directly) or you can use esp-serial-flasher.

Thanks you. That explained what I need to know

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