How to assign I2C pins on ESP32-S3 on Platformio?

PlatformIO IDE
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1

I’ve been attempting to use an I2C display with some buttons on my ESP32-S3-DevkitC-1. I was able to get the ESP-32 working with Platformio but I haven’t been able to find the I2C pins on the ESP32 in all pinouts I could find, there were no pins that were specifically for I2C. I read that pins could be programmed to act as the I2C pins but I couldn’t find any specific commands to do so.

Here is the code I have been working with to check any devices that are connected to I2C

#include <Arduino.h>
#include <Wire.h>

void setup() {
  Serial.begin (115200);
  Serial.println ("I2C scanner. Scanning ...");
  byte count = 0;
  // 0x27 0x3F
  Wire.begin();
  for (byte i = 8; i < 120; i++)
  {
    Wire.beginTransmission (i);
    if (Wire.endTransmission () == 0)
      {
      Serial.print ("Found address: ");
      Serial.print (i, DEC);
      Serial.print (" (0x");
      Serial.print (i, HEX);
      Serial.println (")");
      count++;
      delay (1);
      }
  }
  Serial.println ("Done.");
  Serial.print ("Found ");
  Serial.print (count, DEC);
  Serial.println (" device(s).");
}  // end of setup

void loop() {}
3

Use Wire.setPins(<sda>, <scl>) before calling .begin().

https://espressif-docs.readthedocs-hosted.com/projects/arduino-esp32/en/latest/api/i2c.html#setpins

Another way is also to call Wire.begin() with sda and scl as the first arguments