ESP32-S2-DevKitM-1(U)

[中文]

This user guide provides information on Espressif’s small-sized development board ESP32-S2-DevKitM-1(U).

ESP32-S2-DevKitM-1(U) is a general-purpose development board based on ESP32-S2FH4 chip, which falls into ESP32-S2 chip series. With a rich peripheral set and optimized pinout, this board allows rapid prototyping.

ESP32-S2-DevKitM-1 is embedded with ESP32-S2-MINI-1 module (on-board PCB antenna), while ESP32-S2-DevKitM-1U with ESP32-S2-MINI-1U module (external antenna connector).

ESP32-S2-DevKitM-1

ESP32-S2-DevKitM-1U

ESP32-S2-DevKitM-1

ESP32-S2-DevKitM-1U

The document consists of the following major sections:

  • Getting started: Provides an overview of the ESP32-S2-DevKitM-1(U) and hardware/software setup instructions to get started.

  • Hardware reference: Provides more detailed information about the ESP32-S2-DevKitM-1(U)’s hardware.

  • Hardware Revision Details: Revision history, known issues, and links to user guides for previous versions (if any) of ESP32-S2-DevKitM-1(U).

  • Related Documents: Gives links to related documentation.

Getting Started

This section describes how to get started with ESP32-S2-DevKitM-1(U). It begins with a few introductory sections about the ESP32-S2-DevKitM-1(U), then Section Start Application Development provides instructions on how to get the ESP32-S2-DevKitM-1(U) ready and flash firmware into it.

Overview

ESP32-S2-DevKitM-1(U) is entry-level development board equipped with either ESP32-S2-MINI-1 or ESP32-S2-MINI-1U module. Most of the I/O pins on the module are broken out to the pin headers on both sides for easy interfacing. Developers can either connect peripherals with jumper wires or mount ESP32-S2-DevKitM-1(U) on a breadboard.

Contents and Packaging

Retail orders

If you order a few samples, each ESP32-S2-DevKitM-1(U) comes in an individual package in either antistatic bag or any packaging depending on your retailer.

For retail orders, please go to https://www.espressif.com/en/company/contact/buy-a-sample.

Wholesale Orders

If you order in bulk, the boards come in large cardboard boxes.

For wholesale orders, please check Espressif Product Ordering Information (PDF).

Description of Components

ESP32-S2-DevKitM-1 - front

ESP32-S2-DevKitM-1 - front

ESP32-S2-DevKitM-1U - front

ESP32-S2-DevKitM-1U - front

The key components of the board are described in a clockwise direction.

Key Component

Description

ESP32-S2-MINI-1 or ESP32-S2-MINI-1U

ESP32-S2-MINI-1 and ESP32-S2-MINI-1U are two powerful, generic Wi-Fi MCU modules that integrate ESP32-S2FH4 chip. ESP32-S2-MINI-1 comes with a PCB antenna, and ESP32-S2-MINI-1U with an external antenna connector. They both feature a 4 MB external SPI flash.

Pin Headers

All available GPIO pins (except for the SPI bus for flash) are broken out to the pin headers on the board. Users can program ESP32-S2FH4 chip to enable multiple functions such as SPI, I2S, UART, I2C, touch sensors, PWM etc. For details, please see Header Block.

3.3 V Power On LED

Turns on when the USB power is connected to the board.

USB to UART Bridge

Single USB-UART bridge chip provides transfer rates up to 3 Mbps.

Reset Button

Reset button.

Micro-USB Port

USB interface. Power supply for the board as well as the communication interface between a computer and the ESP32-S2FH4 chip.

Boot Button

Download button. Holding down Boot and then pressing Reset initiates Firmware Download mode for downloading firmware through the serial port.

RGB LED

Addressable RGB LED, driven by GPIO18.

5 V to 3.3 V LDO

Power regulator that converts a 5 V supply into a 3.3 V output.

External Antenna Connector

On ESP32-S2-MINI-1U module only. For connector dimensions, please refer to Section External Antenna Connector Dimensions in ESP32-S2-MINI-1 & ESP32-S2-MINI-1U Datasheet.

Start Application Development

Before powering up your ESP32-S2-DevKitM-1(U), please make sure that it is in good condition with no obvious signs of damage.

Required Hardware

  • ESP32-S2-DevKitM-1(U)

    • For ESP32-S2-DevKitM-1U, an antenna is also required.

  • USB 2.0 cable (Standard-A to Micro-B)

  • Computer running Windows, Linux, or macOS

Note

Be sure to use an appropriate USB cable. Some cables are for charging only and do not provide the needed data lines nor work for programming the boards.

Software Setup

Please proceed to Get Started, where Section Installation Step by Step will quickly help you set up the development environment and then flash an application example into your ESP32-S2-DevKitM-1(U).

Note

ESP32-S2 series of chips only is only supported in ESP-IDF master or version v4.2 and higher.

Hardware Reference

Block Diagram

A block diagram below shows the components of ESP32-S2-DevKitM-1 and their interconnections.

ESP32-S2-DevKitM-1(U) (click to enlarge)

ESP32-S2-DevKitM-1(U) (click to enlarge)

Power Supply Options

There are three mutually exclusive ways to provide power to the board:

  • Micro-USB Port, default power supply

  • 5V and GND pin headers

  • 3V3 and GND pin headers

It is recommended to use the first option: Micro-USB Port.

Header Block

The two tables below provide the Name and Function of the pin headers on both sides of the board (J1 and J3). The pin header names are shown in ESP32-S2-DevKitM-1 - front. The numbering is the same as in the ESP32-S2-DevKitM-1(U) Schematics (PDF).

J1

No.

Name

Type 1

Function

1

3V3

P

3.3 V power supply

2

0

I/O/T

RTC_GPIO0, GPIO0

3

1

I/O/T

RTC_GPIO1, GPIO1, TOUCH1, ADC1_CH0

4

2

I/O/T

RTC_GPIO2, GPIO2, TOUCH2, ADC1_CH1

5

3

I/O/T

RTC_GPIO3, GPIO3, TOUCH3, ADC1_CH2

6

4

I/O/T

RTC_GPIO4, GPIO4, TOUCH4, ADC1_CH3

7

5

I/O/T

RTC_GPIO5, GPIO5, TOUCH5, ADC1_CH4

8

6

I/O/T

RTC_GPIO6, GPIO6, TOUCH6, ADC1_CH5

9

7

I/O/T

RTC_GPIO7, GPIO7, TOUCH7, ADC1_CH6

10

8

I/O/T

RTC_GPIO8, GPIO8, TOUCH8, ADC1_CH7

11

9

I/O/T

RTC_GPIO9, GPIO9, TOUCH9, ADC1_CH8, FSPIHD

12

10

I/O/T

RTC_GPIO10, GPIO10, TOUCH10, ADC1_CH9, FSPICS0, FSPIIO4

13

11

I/O/T

RTC_GPIO11, GPIO11, TOUCH11, ADC2_CH0, FSPID, FSPIIO5

14

12

I/O/T

RTC_GPIO12, GPIO12, TOUCH12, ADC2_CH1, FSPICLK, FSPIIO6

15

13

I/O/T

RTC_GPIO13, GPIO13, TOUCH13, ADC2_CH2, FSPIQ, FSPIIO7

16

14

I/O/T

RTC_GPIO14, GPIO14, TOUCH14, ADC2_CH3, FSPIWP, FSPIDQS

17

15

I/O/T

RTC_GPIO15, GPIO15, U0RTS, ADC2_CH4, XTAL_32K_P

18

16

I/O/T

RTC_GPIO16, GPIO16, U0CTS, ADC2_CH5, XTAL_32K_N

19

17

I/O/T

RTC_GPIO17, GPIO17, U1TXD, ADC2_CH6, DAC_1

20

5V

P

5 V power supply

21

G

G

Ground

J3

No.

Name

Type

Function

1

G

G

Ground

2

RST

I

CHIP_PU

3

46

I

GPIO46

4

45

I/O/T

GPIO45

5

RX

I/O/T

U0RXD, GPIO44, CLK_OUT2

6

TX

I/O/T

U0TXD, GPIO43, CLK_OUT1

7

42

I/O/T

MTMS, GPIO42

8

41

I/O/T

MTDI, GPIO41, CLK_OUT1

9

40

I/O/T

MTDO, GPIO40, CLK_OUT2

10

39

I/O/T

MTCK, GPIO39, CLK_OUT3

11

38

I/O/T

GPIO38, FSPIWP

12

37

I/O/T

SPIDQS, GPIO37, FSPIQ

13

36

I/O/T

SPIIO7, GPIO36, FSPICLK

14

35

I/O/T

SPIIO6, GPIO35, FSPID

15

34

I/O/T

SPIIO5, GPIO34, FSPICS0

16

33

I/O/T

SPIIO4, GPIO33, FSPIHD

17

26

I/O/T

SPICS1, GPIO26

18

21

I/O/T

RTC_GPIO21, GPIO21

19

20

I/O/T

RTC_GPIO20, GPIO20, U1CTS, ADC2_CH9, CLK_OUT1, USB_D+

20

19

I/O/T

RTC_GPIO19, GPIO19, U1RTS, ADC2_CH8, CLK_OUT2, USB_D-

21

18

I/O/T

RTC_GPIO18, GPIO18, U1RXD, ADC2_CH7, DAC_2, CLK_OUT3, RGB LED

1

P: Power supply; I: Input; O: Output; T: High impedance.

Pin Layout

ESP32-S2-DevKitM-1(U) (click to enlarge)

ESP32-S2-DevKitM-1(U) Pin Layout (click to enlarge)

Hardware Revision Details

This is the first revision of this board released.