ESP32-S2-DevKitM-1
This user guide provides information on Espressif’s small-sized development board ESP32-S2-DevKitM-1.
ESP32-S2-DevKitM-1 is entry-level development board. 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 on a breadboard.
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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 and hardware/software setup instructions to get started.
Hardware reference: Provides more detailed information about the ESP32-S2-DevKitM-1’s hardware.
Hardware Revision Details: Revision history, known issues, and links to user guides for previous versions (if any) of ESP32-S2-DevKitM-1.
Related Documents: Gives links to related documentation.
Getting Started
This section describes how to get started with ESP32-S2-DevKitM-1. It begins with a few introductory sections about the ESP32-S2-DevKitM-1, then Section Start Application Development provides instructions on how to get the ESP32-S2-DevKitM-1 ready and flash firmware into it.
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 |
Flash |
PSRAM |
Antenna |
|---|---|---|---|---|
ESP32-S2-DevKitM-1-N4R2 |
ESP32-S2-MINI-2 (Recommended) |
4 MB |
2 MB |
PCB on-board antenna |
ESP32-S2-DevKitM-1U-N4R2 |
ESP32-S2-MINI-2U (Recommended) |
4 MB |
2 MB |
External antenna connector |
ESP32-S2-DevKitM-1 (EOL) |
ESP32-S2-MINI-1 (EOL) |
4 MB |
— |
PCB on-board antenna |
ESP32-S2-DevKitM-1U (EOL) |
ESP32-S2-MINI-1U (EOL) |
4 MB |
— |
External antenna connector |
ESP32-S2-DevKitM-1R (EOL) |
ESP32-S2-MINI-1 (EOL) |
4 MB |
2 MB |
PCB on-board antenna |
ESP32-S2-DevKitM-1RU (EOL) |
ESP32-S2-MINI-1U (EOL) |
4 MB |
2 MB |
External antenna connector |
Retail Orders
If you order a few samples, each ESP32-S2-DevKitM-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.
Description of Components
ESP32-S2-DevKitM-1 - front
ESP32-S2-DevKitM-1U - front
The key components of the board are described in a clockwise direction.
Key Component |
Description |
|---|---|
On-board module (ESP32-S2-MINI-1 or ESP32-S2-MINI-1U in figures above) |
ESP32-S2-MINI series modules with an on-board PCB antenna or a connector for an external antenna. This series of modules, known for its small size, have a flash and/or a PSRAM integrated in the chip package. For more information, please refer to Ordering Information. |
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-2U and ESP32-S2-MINI-1U module only. For connector dimensions, please refer to Section External Antenna Connector Dimensions in module datasheet. |
Start Application Development
Before powering up your ESP32-S2-DevKitM-1, please make sure that it is in good condition with no obvious signs of damage.
Required Hardware
ESP32-S2-DevKitM-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.
Software Setup
Please proceed to Get Started, where Section Installation will quickly help you set up the development environment and then flash an application example into your ESP32-S2-DevKitM-1.
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 (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 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 Pin Layout (click to enlarge)
Hardware Revision Details
This is the first revision of this board released.