Adafruit ESP32-S3 User Manual

#include <Adafruit_TestBed.h>
extern Adafruit_TestBed TB;
#define DEFAULT_I2C_PORT &Wire
// Some boards have TWO I2C ports, how nifty. We should scan both
#if defined(ARDUINO_ARCH_RP2040) \
|| defined(ARDUINO_ADAFRUIT_QTPY_ESP32S2) \
|| defined(ARDUINO_ADAFRUIT_QTPY_ESP32S3_NOPSRAM) \
|| defined(ARDUINO_ADAFRUIT_QTPY_ESP32S3) \
|| defined(ARDUINO_ADAFRUIT_QTPY_ESP32_PICO) \
|| defined(ARDUINO_SAM_DUE)
#define SECONDARY_I2C_PORT &Wire1
#endif
void setup() {
Serial.begin(115200);
// Wait for Serial port to open
while (!Serial) {
delay(10);
}
delay(500);
Serial.println("Adafruit I2C Scanner");
#if defined(ARDUINO_ADAFRUIT_QTPY_ESP32S2) || \
defined(ARDUINO_ADAFRUIT_QTPY_ESP32S3_NOPSRAM) || \
defined(ARDUINO_ADAFRUIT_QTPY_ESP32S3) || \
defined(ARDUINO_ADAFRUIT_QTPY_ESP32_PICO)
// ESP32 is kinda odd in that secondary ports must be manually
// assigned their pins with setPins()!
Wire1.setPins(SDA1, SCL1);
#endif
#if defined(ARDUINO_ADAFRUIT_FEATHER_ESP32S2)
// turn on the I2C power by setting pin to opposite of 'rest state'
pinMode(PIN_I2C_POWER, INPUT);
delay(1);
bool polarity = digitalRead(PIN_I2C_POWER);
pinMode(PIN_I2C_POWER, OUTPUT);
digitalWrite(PIN_I2C_POWER, !polarity);
#endif
#if defined(ARDUINO_ADAFRUIT_FEATHER_ESP32S2_TFT)
pinMode(TFT_I2C_POWER, OUTPUT);
digitalWrite(TFT_I2C_POWER, HIGH);
#endif
#if defined(ARDUINO_ADAFRUIT_FEATHER_ESP32S2_REVTFT)
pinMode(TFT_I2C_POWER, OUTPUT);
digitalWrite(TFT_I2C_POWER, HIGH);
#endif
#if defined(ADAFRUIT_FEATHER_ESP32_V2)
// Turn on the I2C power by pulling pin HIGH.
pinMode(NEOPIXEL_I2C_POWER, OUTPUT);
digitalWrite(NEOPIXEL_I2C_POWER, HIGH);
#endif
}
void loop() {
Serial.println("");
Serial.println("");
Serial.print("Default port (Wire) ");
TB.theWire = DEFAULT_I2C_PORT;
TB.printI2CBusScan();
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Adafruit ESP32-S3 Specifications

General

Brand	Adafruit
Model	ESP32-S3
Category	Microcontrollers
Language	English