A guide for the ESP32 microcontroller series
company members and the CSA allows device implementation on Android and iOS controllers. The ESP microcontrollers play an integral role in the open-source Matter SDK development ■ Arduino-ESP SDK – this SDK, also known as the Arduino core, is a software development kit for the ESP32 that allows developers to program this microcontroller ecosystem. The core is included with the Arduino integrated development environment (IDE). Lastly, the Arduino IDE is a collection of software libraries, and example code for the ESP32 development kits and boards Conclusion The ESP32 microcontrollers offer versatility and powerful solutions for industrial and commercial IoT applications. The ESP32 ecosystem is integrating powerful processing capabilities, reliable connectivity, and advanced security features. Whether deployed in energy-efficient sensors or rugged industrial monitoring systems, the ESP32 microcontrollers provide the flexibility and performance needed to drive innovation and address the diverse challenges of the IoT landscape. This guide provides an overview of the ESP32 microcontroller, including its programmable platform, capabilities, and features to assist you in selecting the appropriate device for your innovative projects.
ESP32-C series (RISC-V cores) ■ Core architecture: single-core 32-bit RISC-V (potentially lower cost) ■ Variants:
ESP32-S Series (Successors)
Figure 8: ESP32-H2 DevKitM-1
■ Core Architecture: Xtensa LX7 (dual-core) - Improved performance and security. ■ Variants: 1. ESP32-S2: Wi-Fi only (no Bluetooth)
1. ESP32-C3: Wi-Fi and BLE
2. ESP32-C6 (Upcoming): Details not fully confirmed yet
2. ESP32-S3: Wi-Fi and BLE
ESP32-H2 (integrates the IEEE 802.15.4 connectivity with Bluetooth 5 Low Energy (LE). ■ Core architecture: single-core, 32-bit RISC-V microcontroller ■ Variants: No variants as of today ■ Technical specifications (general) 1. Clock Speed -96 MHz 2. Memory: 320 KB of SRAM with 16KB of Cache, 128KB of ROM, and Flash Memory of 4MB 3. Has 19 programmable GPIOs with support for ADC 4. SPI, UART, I2C, I2S, GDMA, and LED PWM ■ Wireless connectivity: IEEE 802.15.4 (Mesh Network) and Bluetooth 5 (LE) Project example (ESP32-H): smart agriculture system (can monitor environmental conditions like soil, temperature, and light levels application).
a. Technical specifications (General - may vary between C3 & C6)
a. Technical Specifications (General - May vary slightly between S2 & S3) i. Improved clock speeds compared to the original ESP32.
this guide by downloading from open-source GitHub repositories. Documentation is available with sample code to ensure the main features of each ESP32 microcontroller can be easily explored. The following is a short list of available SDKs for the ESP32
ESP32-P4 (powered by a dual-core RISCV CPU) ■ Has AI instruction extensions ■ Advanced memory subsystem and integrated high-speed peripherals ■ Positioned for the forthcoming era of embedded applications ■ Specific application areas: 1. Human Machine Interfaces (HMI) 2. Edge computing 3. Increased IO-connectivity demands ■ ESP32-P4 development kits coming soon ESP32 Software Development Kits (SDKs) With various ESP32 development kits, Espressif has provided a resource of programming tools. The SDKs are available for the ESP32 microcontrollers presented in
3. Clock speed: likely similar range to other ESP32s (80 MHz - 240 MHz - Confirmation needed for C6) 4. Memory: likely similar to or increased capacity compared to ESP32-C3 (e.g., ESP32-C3: Up to 4MB Flash, 400 KiB RAM) 5. Has 14 programmable GPIOs, SPI, I2C, UART, LED PWM, ADC ■ Wireless connectivity (C3): Wi-Fi and BLE (Confirmation needed for C6) Project example (ESP32-C3): wireless soil moisture sensor (cost- sensitive application).
b. USB Support.
c. Memory: 320KB SRAM, 128K ROM d. Has 43 programmable GPIOs, SPI, I2C, I2S, UART, ADC, LED PWM
microcontroller ecosystem. ■ ESP-IDF – the official IoT
Development Framework for the ESP32, ESP32-S, ESP32-C, and ESP32-H family of SoCs. The SDK allows typical or generic applications to be built on these
Project examples: ■ ESP32-S2: Wi-Fi smart plug (single LX7 core sufficient) ■ ESP32-S3: wearable fitness tracker (dual LX7 cores for real- time processing)
microcontroller platforms. Traditional programming
languages like C and C++ are used to develop microcontroller applications using the SDK ■ ESP-Matter – this software implementation of the Matter protocol is a collaborative effort of the Computer Software Assurance (CSA) and company members. This consortium of
Figure 6: ESP32-S3 DevKitM-1
Figure 7: ESP32-C6 DevKitM-1
The ESP32 microcontrollers offer versatility and powerful solutions for industrial and commercial IoT applications.
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