Arduino

This chapter contains the following sections. Please read as needed:

• Arduino Getting Started
• Setting Up Development Environment

Arduino Getting Started

New to Arduino ESP32 development and looking for a quick start? We have prepared a comprehensive Getting Started Tutorial for you.

• Section 0: Getting to Know ESP32
• Section 1: Installing and Configuring Arduino IDE
• Section 2: Arduino Basics
• Section 3: Digital Output/Input
• Section 4: Analog Input
• Section 5: Pulse Width Modulation (PWM)
• Section 6: Serial Communication (UART)
• Section 7: I2C Communication
• Section 8: SPI Communication
• Section 9: Wi-Fi Basics
• Section 10: Web Server
• Section 11: Bluetooth
• Section 12: LVGL GUI Development
• Section 13: Comprehensive Project

Note: This tutorial uses the ESP32-S3-Zero as a reference example, and all hardware code is based on its pinout. Before you start, we recommend checking the pinout of your development board to ensure the pin configuration is correct.

Setting Up Development Environment

1. Installing and Configuring Arduino IDE

Please refer to the tutorial Installing and Configuring Arduino IDE to download and install the Arduino IDE and add ESP32 support.

2. Other Tips

1. The ESP32-S3-Pico utilizes a USB HUB to expose both the ESP32-S3 native USB interface and the UART-to-USB converter. Either interface can be used for program flashing. For serial communication:

   • The printf() function can be used directly;

   • To use the Serial.println() function for USB output, the USB CDC feature must be enabled. Please follow the steps below to verify your environment is configured correctly:

     1. Update the ESP32 Libraries: It is recommended to update the ESP32 board libraries in Arduino IDE to version 3.3.5 or later. Newer versions of the core have USB CDC enabled by default for this board.

     2. Check Configuration Options: In the Arduino IDE "Tools" menu, check and confirm that the "USB CDC On Boot" option is set to "Enabled".

        note

        As shown in the image below, the "USB CDC On Boot" option should be set to Enabled when correctly configured.