> ## Documentation Index
> Fetch the complete documentation index at: https://docs.kode.diy/llms.txt
> Use this file to discover all available pages before exploring further.

# ESP32-S3

> Know the microcontroller that gives life to the Kode Dot and its state control.

# Features

The **ESP32-S3** is one of the best microcontrollers of **Espressif** that incorporates a **double core XTensa LX7,** capable of running up to **240MHz**. In addition, it integrates **2.4GHz** connectivity with support for **WiFi** and **Bluetooth LE**.

In the following image you can see the **functional diagram of the ESP32-S3** with all the peripherals it incorporates:

<Frame caption="Functional diagram of the ESP32-S3">
  <img width="600" src="https://mintcdn.com/kodediy/XTX2YJaXd-8SFLrS/images/kode-dot/esp32s3/funtionalblock.png?fit=max&auto=format&n=XTX2YJaXd-8SFLrS&q=85&s=e07ab48d920398fb569eefb526dfce1b" data-path="images/kode-dot/esp32s3/funtionalblock.png" />
</Frame>

In addition to its power and versatility, we have integrated it into the Kode Dot expanding its capabilities with **32MB of flash** and **8MB of PSRAM.** Thus, it makes honor to its status as the **best maker device on the market** and executing programs much larger and more complex.

| Feature | Description                             |
| ------- | --------------------------------------- |
| Flash   | External memory of **32MB by Octalbus** |
| PSRAM   | Internal memory of **8MB by Octalbus**  |

## Antenna

Inside the Kode Dot we have integrated a **2.4GHz antenna** in the PCB. With this antenna you will be able to use the **WiFi** and **Bluetooth LE** of the ESP32-S3, as well as **ESP-NOW** and other communication protocols that work in this frequency band.

## Programming

**Programming the Kode Dot is done like any other ESP32-S3-based board.** Connect it directly to your computer using the USB-C cable and start uploading your code.

<Note>In the [Applications](/en/kodeOS/apps) section it is explained in detail how to upload code and create applications.</Note>

Internally, the **USB-C data lines** are connected to the **GPIO19 and GPIO20** pins to use the internal USB-Serial peripheral.

With the USB-C, you also have the option to use the internal **USB Serial/JTAG** peripheral that the ESP32-S3 incorporates to **flash and debug the Kode Dot.**

For the most advanced, you can use the **GPIO39, GPIO40, GPIO41 and GPIO42** pins of the **top connector of the Kode Dot** to debug a program using an **external JTAG interface.**

## State control

The control of the **BOOT** and **RESET** states of the ESP32-S3 is performed using simple combinations with the **buttons of the Kode Dot.**

### RESET

To reset the Kode Dot, you must press the **left button of the pad** at the same time as you press the **bottom button.** This is useful in these cases:

* When a program has been **flashed** and the Kode Dot is **locked.**
* To **exit an application** and return to the main menu.

### BOOT

To enter the Kode Dot in BOOT mode, while holding the **top button,** the Kode Dot must be reset following the RESET combination.

<Info>It is likely that you will not have to use this process since if the code you upload to the Kode Dot blocks or makes the ESP32-S3 restart, the Kode Dot will return to the main menu automatically.</Info>

## Example code

With this code you can get the **MAC address** of the different interfaces of the ESP32-S3.

```cpp esp32s3_info.ino lines icon="microchip" theme={null}
/**
 * Displays ESP32-S3 microcontroller information via serial port.
 * Includes model, revision, number of cores, and Chip ID.
 * Prints the data every 3 seconds.
 */
/* ───────── KODE | docs.kode.diy ───────── */

void setup() {
  Serial.begin(115200); /* Starts serial communication at 115200 baud */
}

void loop() {
  /* Prints ESP32 chip model and revision */
  Serial.printf("ESP32 Chip model = %s Rev %d\n", ESP.getChipModel(), ESP.getChipRevision());
  
  /* Prints the number of cores in the chip */
  Serial.printf("This chip has %d cores\n", ESP.getChipCores());
  
  /* Prints the chip's unique identifier */
  Serial.print("Chip ID: "); 
  Serial.println(ESP.getEfuseMac()); 

  /* Waits 3 seconds before repeating */
  delay(3000); 
}
```

## Download ofexamples

You can test the example codes using the Arduino IDE or the ESP-IDF IDE or download the codes in our drive:

[ESP32-S3 examples](https://drive.google.com/drive/folders/11FnC9pj8qADzXAlg8xAT0knNWh9bgYV6)