esp32

Goal: Develop embedded applications on ESP32 MCUs, utilizing its dual-core CPU, Wi-Fi/BLE radios, and advanced peripheral matrix.

1. Hardware Overview

• Voltage: 3.3V Logic.
• ADC: Dual 12-bit ADCs, but ADC2 cannot be used while Wi-Fi is active.
• Strapping Pins: Pins 0, 2, 5, 12, 15 must be at specific logic levels during boot. Avoid using them for inputs if possible.
• Muxing: Almost any GPIO can be assigned to hardware I2C, SPI, or UART using the ESP32 matrix.

2. Radio & Network (Arduino Core)

#include <WiFi.h>