Pins for i2C on ESP32-S3-DevKitC-1?

ISTnerd
Posts: 1
Joined: Fri Mar 31, 2023 10:35 am

Pins for i2C on ESP32-S3-DevKitC-1?

Postby ISTnerd » Fri Mar 31, 2023 10:45 am

Hi guys,

I am doing a project using the ESP32-S3-DevKitC-1. In the documentation it says it supports 2x I2C pins, but there is not specified where those pins are located, and their naming. Have been looking for names like SDA, SCL etc. but does not exist.

Link to pinout: https://docs.espressif.com/projects/es ... itc-1.html

Anyone knows what pins to use for I2C?

Thanks :)

ESP_Sprite
Posts: 8921
Joined: Thu Nov 26, 2015 4:08 am

Re: Pins for i2C on ESP32-S3-DevKitC-1?

Postby ESP_Sprite » Sat Apr 01, 2023 1:21 am

The ESP32 chips have a GPIO matrix that allows you to route most peripherals (like I2C) to any available GPIO pin. In other words: pick two convenient GPIO pins, make sure they're not otherwise occupied (flash connected to them, bootstrap pins etc), and you can use them as your I2C pins.

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