WEMOS LOLIN S3 Mini

Hardware

Platform Espressif 32: ESP32 is a series of low-cost, low-power system on a chip microcontrollers with integrated Wi-Fi and Bluetooth. ESP32 integrates an antenna switch, RF balun, power amplifier, low-noise receive amplifier, filters, and power management modules.

Microcontroller	ESP32S3
Frequency	240MHz
Flash	4MB
RAM	320KB
Vendor	WEMOS

Configuration

Please use lolin_s3_mini ID for board option in “platformio.ini” (Project Configuration File):

[env:lolin_s3_mini]
platform = espressif32
board = lolin_s3_mini

You can override default WEMOS LOLIN S3 Mini settings per build environment using board_*** option, where *** is a JSON object path from board manifest lolin_s3_mini.json. For example, board_build.mcu, board_build.f_cpu, etc.

[env:lolin_s3_mini]
platform = espressif32
board = lolin_s3_mini

; change microcontroller
board_build.mcu = esp32s3

; change MCU frequency
board_build.f_cpu = 240000000L

Uploading

WEMOS LOLIN S3 Mini supports the following uploading protocols:

• cmsis-dap

• esp-bridge

• esp-builtin

• esp-prog

• espota

• esptool

• iot-bus-jtag

• jlink

• minimodule

• olimex-arm-usb-ocd

• olimex-arm-usb-ocd-h

• olimex-arm-usb-tiny-h

• olimex-jtag-tiny

• tumpa

Default protocol is esptool

You can change upload protocol using upload_protocol option:

[env:lolin_s3_mini]
platform = espressif32
board = lolin_s3_mini

upload_protocol = esptool

Debugging

Debugging - “1-click” solution for debugging with a zero configuration.

Warning

You will need to install debug tool drivers depending on your system. Please click on compatible debug tool below for the further instructions and configuration information.

You can switch between debugging Tools & Debug Probes using debug_tool option in “platformio.ini” (Project Configuration File).

WEMOS LOLIN S3 Mini does not have on-board debug probe and IS NOT READY for debugging. You will need to use/buy one of external probe listed below.

Compatible Tools	On-board	Default
CMSIS-DAP		Yes
esp-bridge
esp-builtin
ESP-Prog
oddWires IOT-Bus JTAG
J-LINK
Mini-Module FT2232H
Olimex ARM-USB-OCD
Olimex ARM-USB-OCD-H
Olimex ARM-USB-TINY-H
Olimex ARM-USB-TINY
TIAO USB Multi-Protocol Adapter (TUMPA)

Frameworks

Name	Description
Arduino	Arduino Wiring-based Framework allows writing cross-platform software to control devices attached to a wide range of Arduino boards to create all kinds of creative coding, interactive objects, spaces or physical experiences.
Espressif IoT Development Framework	Espressif IoT Development Framework. Official development framework for ESP32 chip