ESP32-S2-DevKitM-1(U)¶
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 family. 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 (U.FL connector to support external IPEX antenna).
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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(U) and hardware/software setup instructions to get started.
Hardware reference: Provides more detailed information about the ESP32-S2-DevKitM-1(U)’s hardware.
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-1U - front¶
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 a U.FL connector for external IPEX antenna. They both feature a 4 MB external SPI flash. |
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. |
I/O Connector |
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. |
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 (WS2812), driven by GPIO18. |
5 V to 3.3 V LDO |
Power regulator that converts a 5 V supply into a 3.3 V output. |
U.FL Connector |
On ESP32-S2-MINI-1U module only. Connects to an external IPEX antenna. |
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 IPEX antenna is also required.
USB 2.0 cable (Standard-A to Micro-B)
Computer running Windows, Linux, or macOS
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 family chip 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)¶
Power Supply Options¶
There are three mutually exclusive ways to provide power to the board:
Micro USB port, default power supply
5V and GND header pins
3V3 and GND header pins
It is recommended to use the first option: micro USB port.
Header Block¶
The two tables below provide the Name and Function of I/O header pins on both sides of the board, as shown in ESP32-S2-DevKitM-1 - front. The numbering and names are the same as in the ESP32-S2-DevKitM-1(U) Schematics (PDF).
J1¶
No. |
Name |
Type |
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 |