ESP32(ESPRESSIF)

 

1. ESP32

: ESPRESSIF의 ESP32는 저전력 마이크로컨트롤러(Microcontroller) 칩

- Wi-Fi와 Bluetooth 포함한 무선 통신 가능

- 다양한 주변장치 인터페이스를 포함. GPIO 및 I2C, SPI, UART 등의 통신 인터페이스 지원.

- ESP32는 ESP8266의 후속 모델로 더 강력한 성능과 더 많은 주변장치 인터페이스를 제공

- ESP32는 듀얼 코어(Two-core) 프로세서로 구성되어 있어 병렬 작업을 수행할 수 있으며, 주파수는 최대 240MHz까지 동작

- 저렴한 가격에 IoT를 구현할 수 있어서 인기가 많음

 

https://www.espressif.com/en

Wireless SoCs, Software, Cloud and AIoT Solutions | Espressif Systems

 

1-1. 제품군(Modules)

- ESP32 SoCs를 기반으로 플래시 메모리 등을 추가 하여 모듈을 만들어 판매함

- 대표적으로 ESP32-WROOM-32가 있음

https://www.espressif.com/en/products/modules

ESP Modules | Espressif Systems

 

(1) ESP32-S2 Modules

: 32-bit MCU & 2.4 GHz Wi-Fi

Board	Chip Embedded	Dimensions (mm)	Flash (MB)	PSRAM (MB)	Antenna	Development Board
ESP32-S2-MINI-2	ESP32-S2FH4 ESP32-S2FN4R2	15.4×20×2.4	4	N/A 2	PCB antenna	ESP32-S2-DevKitM-1
ESP32-S2-MINI-2U	ESP32-S2FH4 ESP32-S2FN4R2	15.4×15.4×2.4	4	N/A 2	IPEX antenna connector	ESP32-S2-DevKitM-1
ESP32-S2-SOLO-2	ESP32-S2 ESP32-S2R2	18x25.5x3.1	4	N/A 2	PCB antenna	ESP32-S2-DevKitC-1
ESP32-S2-SOLO-2U	ESP32-S2 ESP32-S2R2	18×19.2×3.2	4	N/A 2	IPEX antenna connector	ESP32-S2-DevKitC-1
ESP32-S2-MINI-1	ESP32-S2FH4 ESP32-S2FN4R2	15.4×20×2.4	4 MB embedded in chip	N/A 2	PCB antenna	ESP32-S2-DevKitM-1
ESP32-S2-SOLO	ESP32-S2ESP32-S2R2	18×25.5×3.1	4,8,16	N/A 2	IPEX antenna connector	ESP32-S2-DevKitM-1
ESP32-S2-SOLO-U	ESP32-S2 ESP32-S2R2	18×19.2×3.2	4,8,16	N/A 2	IPEX antenna connector	ESP32-S2-DevKitC-1
ESP32-S2-WROVER	ESP32-S2	18x31x3.3	4,8,16	2	PCB antenna	ESP32-S2-Kaluga-1 ESP32-S2-HMI-DevKit-1 ESP32-S2-Saola-1
ESP32-S2-WROVER-I	ESP32-S2	18x31x3.3	4,8,16	2	IPEX antenna connector	ESP32-S2-Saola-1 ESP32-S2-Kaluga-1
ESP32-S2-WROOM	ESP32-S2	18x31x3.3	4,8,16	N/A	PCB antenna	ESP32-S2-Saola-1
ESP32-S2-WROOM-I	ESP32-S2	18x31x3.3	4,8,16	N/A	IPEX antenna connector	ESP32-S2-Saola-1

 

(2) ESP32-S3 Modules

: 32-bit MCU & 2.4 GHz Wi-Fi & Bluetooth 5 (LE)

Board	Chip Embedded	Dimensions (mm)	Flash (MB)	PSRAM (MB)	Antenna	Development Board
ESP32-S3-WROOM-1	ESP32-S3 ESP32-S3R2 ESP32-S3R8	18×25.5×3.1	4, 8, 16	N/A 2 8	PCB antenna	ESP32-S3-DevKitC-1 ESP32-S3-BOX ESP32-S3-EYE ESP32-S3-Korvo-1 ESP32-S3-Korvo-2 ESP32-S3-LCD-Ev-Board
ESP32-S3-WROOM-1U	ESP32-S3 ESP32-S3R2 ESP32-S3R8	18×19.2×3.2	4, 8, 16	0 2 8	IPEX antenna connector	ESP32-S3-DevKitC-1
ESP32-S3-WROOM-2	ESP32-S3R8V	18×25.5×3.1	16, 32	8	PCB antenna	ESP32-S3-DevKitC-1
ESP32-S3-MINI-1	ESP32-S3FN8 ESP32-S3FH4R2	15.4×20.5×2.4	8 MB embedded in chip	N/A	PCB antenna	ESP32-S3-DevKitM-1ESP32-S3-USB-OTG
ESP32-S3-MINI-1U	ESP32-S3FN8ESP32-S3FH4R2	15.4×15.4×2.4	8 MB embedded in chip	N/A	IPEX antenna connector	ESP32-S3-DevKitM-1

 

(3) ESP32-C2 Modules

: 32-bit RISC-V MCU & 2.4 GHz Wi-Fi & Bluetooth 5 (LE)

Board	Chip Embedded	Dimensions (mm)	Flash (MB)	PSRAM (MB)	Antenna	Development Board
ESP8684-MINI-1	ESP8684H2 ESP8684H4	13.2×16.6×2.4	1, 2, 4	N/A	PCB antenna	ESP8684-DevKitM-1
ESP8684-MINI-1U	ESP8684H2 ESP8684H4	13.2×12.5×2.4	1, 2, 4	N/A	IPEX antenna connector	ESP8684-DevKitM-1
ESP8684-WROOM-01C	ESP8684H2 ESP8684H4	24×16×3.1	2, 4	N/A	PCB antenna	N/A
ESP8684-WROOM-02C	ESP8684H2 ESP8684H4	18x20x3.2	2, 4	N/A	PCB antenna	N/A
ESP8684-WROOM-02UC	ESP8684H2 ESP8684H4	18x20x3.2	2, 4	N/A	IPEX antenna connector	ESP8684-DevKitC-02
ESP8684-WROOM-03	ESP8684H2 ESP8684H4	15×17.3×2.8	2, 4	N/A	PCB antenna	N/A
ESP8684-WROOM-04C	ESP8684H2 ESP8684H4	24×16×3.1	2, 4	N/A	PCB antenna	N/A
ESP8684-WROOM-05	ESP8684H2 ESP8684H4	15×17.3×2.8	2, 4	N/A	PCB antenna	N/A
ESP8684-WROOM-06C	ESP8684H2 ESP8684H4	15.8×20.3×2.7	2, 4	N/A	PCB antenna	N/A
ESP8684-WROOM-07	ESP8684H2 ESP8684H4	8.5x12.7x1.9	2, 4	N/A	PCB antenna	N/A

 

(4) ESP32-C3 Modules

: 32-bit RISC-V MCU & 2.4 GHz Wi-Fi & Bluetooth 5 (LE)

 

(5) ESP32-C6 Modules

: 32-bit RISC-V MCU & 2.4 GHz Wi-Fi 6 & Bluetooth 5 (LE) & IEEE 802.15.4

Board	Chip Embedded	Dimensions (mm)	Flash (MB)	PSRAM (MB)	Antenna	Development Board
ESP32-C6-MINI-1	ESP32-C6FH4	13.2×16.6×2.4	4	N/A	PCB antenna	ESP32-C6-DevKitM-1
ESP32-C6-MINI-1U	ESP32-C6FH4	13.2×12.5×2.4	4	N/A	IPEX antenna connector	ESP32-C6-DevKitM-1
ESP32-C6-WROOM-1	ESP32-C6	18×25.5×3.2	4, 8, 16	N/A	PCB antenna	ESP32-C6-DevKitC-1
ESP32-C6-WROOM-1U	ESP32-C6	18x19.2x3.2	4, 8, 16	N/A	ESP32-C6-DevKitC-1	N/A

 

(6) ESP32-H2 Series

: 32-bit RISC-V MCU & Bluetooth 5 (LE) & IEEE 802.15.4

Board	Chip Embedded	Dimensions (mm)	Flash (MB)	PSRAM (MB)	Antenna	Development Board
ESP32-H2-MINI-1	ESP32-H2FH2 ESP32-H2FH4	13.2×16.6×2.4	1, 2, 4	N/A	PCB antenna	ESP32-H2-DevKitM-1
ESP32-H2-MINI-1U	ESP32-H2FH2 ESP32-H2FH4	13.2×12.5×2.4	2, 4	N/A	IPEX antenna connector	ESP32-H2-DevKitM-1

 

(7) ESP32 Modules

: 32-bit MCU & 2.4 GHz Wi-Fi & Bluetooth/Bluetooth LE

 

(8) ESP8266 Modules

: 32-bit MCU & 2.4 GHz Wi-Fi

 

 

1-2. 개발 보드(DevKits)

https://www.espressif.com/en/products/devkits

ESP DevKits | Espressif Systems

 

 

(1) ESP32-S2 Series

: 32-bit MCU & 2.4 GHz Wi-Fi

Board	Flash/PSRAM	Interfaces	UI
ESP32-S2-DevKitM-1	4 MB Flash	I/O USB	Buttons LEDs
ESP32-S2-DevKitC-1	4MB Flash, 8MB Flash + 2 MB PSRAM	I/O USB	Buttons LED
ESP32-S2-Kaluga-1	4 MB Flash + 2 MB PSRAM	SPI I2C I2S UART ADC DAC PWM	Buttons LED
ESP32-S2-Saola-1	4 MB Flash / 4 MB Flash + 2 MB PSRAM	I/O USB	Buttons LED

 

(2) ESP32-S3 Series

: 32-bit MCU & 2.4 GHz Wi-Fi & Bluetooth 5 (LE)

Board	Flash/PSRAM	Interfaces	UI
ESP32-S3-DevKitC-1	8 MB Flash 8 MB Flash + 3.3V 2 MB Quad PSRAM 8 MB Flash + 3.3V 8 MB Octal PSRAM 32 MB Flash + 1.8V 8 MB Octal PSRAM	I/O USB	Buttons LEDs
ESP32-S3-DevKitM-1	8 MB Flash	I/O USB	Buttons LEDs
ESP32-S3-BOX	16 MB Flash + 8 MB PSRAM	USB-C I/O Pmod™ headers	LCD Screen Microphones Speaker LED Buttons
ESP32-S3-EYE	8 MB Flash + 8 MB PSRAM	USB	Camera LCD Microphone Buttons TF card
ESP32-S3-USB-OTG	8 MB Flash embedded in chip	USB Device USB Host SD Card	LCD Screen LED Button
ESP32-S3-Korvo-1	16 MB Flash + 8 MB PSRAM	I/O USB	Buttons TF card LEDs Microphones
ESP32-S3-Korvo-2	16 MB Flash + 8 MB PSRAM	I/O USB	Button TF Card Camera LCD
ESP32-S3-LCD-EV-Board	16 MB Flash + 8 MB PSRAM	I/O USB-C UART	LCD Screen Microphones Speaker LED Buttons

 

(3) ESP32-C2 Series

: 32-bit RISC-V MCU & 2.4 GHz Wi-Fi & Bluetooth LE 5 (LE)

Board	Flash/PSRAM	Interfaces	UI
ESP8684-DevKitM-1	4 MB Flash	I/O USB	Buttons LEDs

 

(4) ESP32-C3 Series

: 32-bit RISC-V MCU & 2.4 GHz Wi-Fi & Bluetooth LE 5 (LE)

Board	Flash/PSRAM	Interfaces	UI
ESP32-C3-DevKitM-1	4 MB Flash	I/O USB	Buttons LEDs
ESP32-C3-DevKitC-02	4 MB Flash	I/O USB	Buttons LEDs
ESP32-C3-DevKit-RUST-1	4 MB Flash	I/O USB type-C	Button LED IMU Temperature and humidity sensor
ESP32-C3-AWS-ExpressLink-DevKit	4 MB Flash	Pin Headers Micro USB	Buttons LEDs
ESP32-C3-LCDkit	4 MB Flash	I/O USB type-C	LCD Screen Speaker LED Buttons EC11 rotary encoder Infrared sensor
ESP32-C3-Lyra	4 MB Flash	I/O UART	Key RGB Microphone Speaker

 

(5) ESP32-C6 Series

: 32-bit RISC-V MCU & 2.4 GHz Wi-Fi 6 & Bluetooth 5 (LE) & IEEE 802.15.4

Board	Flash/PSRAM	Interfaces	UI
ESP32-C6-DevKitC-1	8 MB Flash	I/O USB	Buttons LEDs
ESP32-C6-DevKitM-1	4 MB Flash	I/O USB	Buttons LEDs

 

(6) ESP32-H Series

: 32-bit RISC-V MCU & Bluetooth 5 (LE) & IEEE 802.15.4

Board	Flash/PSRAM	Interfaces	UI
ESP32-H2-DevKitM-1	4 MB Flash	I/O USB	Buttons LEDs
ESP Thread Border Router/Zigbee Gateway	4 MB Flash and 2 MB PSRAM in ESP32-S3-WROOM-1 + 2 MB Flash in ESP32-H2-MINI-1	I/O USB type-C	ESP32-S3-WROOM-1ESP32-H2-MINI-1

 

(7) ESP32 Series

: 32-bit MCU & 2.4 GHz Wi-Fi & BT/Bluetooth LE

 

(8) ESP8266 Series

: 32-bit MCU & 2.4 GHz Wi-Fi

 

 

1-3. 개발 환경

(1) Arduino IDE

: 아두이노 호환 보드처럼 사용 가능

 

(2) PlatformIO

: 여러 MCU 플랫폼을 지원하는 통합 개발 환경

 

(3) ESP IDF

: Espressif에서 제공하는 공식 개발 프레임워크