ESP32-S2-DevKitC-1

[中文]

This user guide will help you get started with ESP32-S2-DevKitC-1 and will also provide more in-depth information.

ESP32-S2-DevKitC-1 is an entry-level development board. This board integrates complete Wi-Fi functions. Most of the I/O pins 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-DevKitC-1 on a breadboard.

ESP32-S2-DevKitC-1 with the ESP32-S2-SOLO Module

ESP32-S2-DevKitC-1 with the ESP32-S2-SOLO Module

The document consists of the following major sections:

  • Getting Started: Overview of ESP32-S2-DevKitC-1 and hardware/software setup instructions to get started.

  • Hardware Reference: More detailed information about the ESP32-S2-DevKitC-1's hardware.

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

  • Related Documents: Links to related documentation.

Getting Started

This section provides a brief introduction of ESP32-S2-DevKitC-1, instructions on how to do the initial hardware setup and how to flash firmware onto it.

Description of Components

ESP32-S2-DevKitC-1 - front

ESP32-S2-DevKitC-1 - front

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

Key Component

Description

On-board module (ESP32-S2-SOLO or ESP32-S2-SOLO-U in the above figure)

ESP32-S2-SOLO series modules with an on-board PCB antenna or a connector for an external antenna. This series of modules have multiple options for flash and PSRAM size. For more information, please refer to Ordering Information.

3.3 V Power On LED

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

USB-to-UART Bridge

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

Pin Headers

All available GPIO pins (except for the SPI bus for flash) are broken out to the pin headers on the board. For details, please see Header Block.

ESP32-S2 USB Port

ESP32-S2 full-speed USB OTG interface, compliant with the USB 1.1 specifications. The interface is used for power supply to the board, for flashing applications to the chip, and for communication with the chip using USB 1.1 protocols.

Reset Button

Press this button to restart the system.

Boot Button

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

USB-to-UART Port

A Micro-USB port used for power supply to the board, for flashing applications to the chip, as well as the communication with the chip via the on-board USB-to-UART bridge.

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.

Start Application Development

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

Required Hardware

  • ESP32-S2-DevKitC-1

  • 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.

Hardware Setup

Connect the board with the computer using USB-to-UART Port. Connection using ESP32-S2 USB Port is not fully documented. In subsequent steps, USB-to-UART Port will be used by default.

Software Setup

Please proceed to ESP-IDF 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-DevKitC-1.

Contents and Packaging

Ordering Information

The development board has a variety of variants to choose from, as shown in the table below.

Ordering Code

On-board Module 1

Flash

PSRAM

Antenna

ESP32-S2-DevKitC-1-N8R2

ESP32-S2-SOLO-2

(Recommended)

8 MB

2 MB

PCB on-board antenna

ESP32-S2-DevKitC-1U-N8R2

ESP32-S2-SOLO-2U

(Recommended)

8 MB

2 MB

External antenna connector

ESP32-S2-DevKitC-1

ESP32-S2-SOLO

4 MB

---

PCB on-board antenna

ESP32-S2-DevKitC-1U

ESP32-S2-SOLO-U

4 MB

---

External antenna connector

ESP32-S2-DevKitC-1R

ESP32-S2-SOLO

4 MB

2 MB

PCB on-board antenna

ESP32-S2-DevKitC-1RU

ESP32-S2-SOLO-U

4 MB

2 MB

External antenna connector
1

The ESP32-S2-SOLO-2 and ESP32-S2-SOLO-2U modules use chip revision v1.0, and the rest use chip revision v0.0. For more information about chip revisions, please refer to ESP32-S2 Series SoC Errata.

Retail orders

If you order a few samples, each ESP32-S2-DevKitC-1 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/contact-us/get-samples.

Wholesale Orders

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

For wholesale orders, please go to https://www.espressif.com/en/contact-us/sales-questions.

Hardware Reference

Block Diagram

The block diagram below shows the components of ESP32-S2-DevKitC-1 and their interconnections.

ESP32-S2-DevKitC-1 (click to enlarge)

ESP32-S2-DevKitC-1 (click to enlarge)

Power Supply Options

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

  • USB-to-UART Port and ESP32-S2 USB Port (either one or both), default power supply (recommended)

  • 5V and G (GND) pins

  • 3V3 and G (GND) pins

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-DevKitC-1 - front. The numbering is the same as in the ESP32-S2-DevKitC-1 Schematic (PDF).

J1

No.

Name

Type 2

Function

1

3V3

P

3.3 V power supply

2

3V3

P

3.3 V power supply

3

RST

I

CHIP_PU

4

4

I/O/T

RTC_GPIO4, GPIO4, TOUCH4, ADC1_CH3

5

5

I/O/T

RTC_GPIO5, GPIO5, TOUCH5, ADC1_CH4

6

6

I/O/T

RTC_GPIO6, GPIO6, TOUCH6, ADC1_CH5

7

7

I/O/T

RTC_GPIO7, GPIO7, TOUCH7, ADC1_CH6

8

15

I/O/T

RTC_GPIO15, GPIO15, U0RTS, ADC2_CH4, XTAL_32K_P

9

16

I/O/T

RTC_GPIO16, GPIO16, U0CTS, ADC2_CH5, XTAL_32K_N

10

17

I/O/T

RTC_GPIO17, GPIO17, U1TXD, ADC2_CH6, DAC_1

11

18 3

I/O/T

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

12

8

I/O/T

RTC_GPIO8, GPIO8, TOUCH8, ADC1_CH7

13

3

I/O/T

RTC_GPIO3, GPIO3, TOUCH3, ADC1_CH2

14

46

I

GPIO46

15

9

I/O/T

RTC_GPIO9, GPIO9, TOUCH9, ADC1_CH8, FSPIHD

16

10

I/O/T

RTC_GPIO10, GPIO10, TOUCH10, ADC1_CH9, FSPICS0, FSPIIO4

17

11

I/O/T

RTC_GPIO11, GPIO11, TOUCH11, ADC2_CH0, FSPID, FSPIIO5

18

12

I/O/T

RTC_GPIO12, GPIO12, TOUCH12, ADC2_CH1, FSPICLK, FSPIIO6

19

13

I/O/T

RTC_GPIO13, GPIO13, TOUCH13, ADC2_CH2, FSPIQ, FSPIIO7

20

14

I/O/T

RTC_GPIO14, GPIO14, TOUCH14, ADC2_CH3, FSPIWP, FSPIDQS

21

5V

P

5 V power supply

22

G

G

Ground

J3

No.

Name

Type

Function

1

G

G

Ground

2

TX

I/O/T

U0TXD, GPIO43, CLK_OUT1

3

RX

I/O/T

U0RXD, GPIO44, CLK_OUT2

4

1

I/O/T

RTC_GPIO1, GPIO1, TOUCH1, ADC1_CH0

5

2

I/O/T

RTC_GPIO2, GPIO2, TOUCH2, ADC1_CH1

6

42

I/O/T

MTMS, GPIO42

7

41

I/O/T

MTDI, GPIO41, CLK_OUT1

8

40

I/O/T

MTDO, GPIO40, CLK_OUT2

9

39

I/O/T

MTCK, GPIO39, CLK_OUT3

10

38

I/O/T

GPIO38, FSPIWP

11

37

I/O/T

SPIDQS, GPIO37, FSPIQ

12

36

I/O/T

SPIIO7, GPIO36, FSPICLK

13

35

I/O/T

SPIIO6, GPIO35, FSPID

14

0

I/O/T

RTC_GPIO0, GPIO0

15

45

I/O/T

GPIO45

16

34

I/O/T

SPIIO5, GPIO34, FSPICS0

17

33

I/O/T

SPIIO4, GPIO33, FSPIHD

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

G

G

Ground

22

G

G

Ground
2

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

3

GPIO18 is not pulled up on boards with an ESP32-S2-SOLO-2 or ESP32-S2-SOLO-2U module.

Pin Layout

ESP32-S2-DevKitC-1 (click to enlarge)

ESP32-S2-DevKitC-1 Pin Layout (click to enlarge)

Hardware Revision Details

This is the first revision of this board released.

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