This is the documentation for the latest (main) development branch of Zephyr. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

M5Stack AtomS3 Lite

Overview

M5Stack AtomS3 Lite is an ESP32-based development board from M5Stack.

It features the following integrated components:

  • ESP32-S3FN8 chip (240MHz dual core, Wi-Fi/BLE 5.0)

  • 512KB of SRAM

  • 384KB of ROM

  • 8MB of Flash

  • RGB Status-LED

M5Stack AtomS3 Lite

M5Stack AtomS3 Lite

Supported Features

The Zephyr m5stack_atoms3_lite board configuration supports the following hardware features:

Interface

Controller

Driver/Component

NVIC

on-chip

nested vector interrupt controller

UART

on-chip

serial port-polling; serial port-interrupt

PINMUX

on-chip

pinmux

GPIO

on-chip

gpio

I2C

on-chip

i2c

SPI

on-chip

spi

CLOCK

on-chip

reset and clock control

COUNTER

on-chip

rtc

WATCHDOG

on-chip

independent watchdog

PWM

on-chip

pwm

ADC

on-chip

adc

DAC

on-chip

dac

die-temp

on-chip

die temperature sensor

Start Application Development

Before powering up your M5Stack AtomS3 Lite, please make sure that the board is in good condition with no obvious signs of damage.

System requirements

Prerequisites

Espressif HAL requires WiFi and Bluetooth binary blobs in order work. Run the command below to retrieve those files.

west blobs fetch hal_espressif

Note

It is recommended running the command above after west update.

Building & Flashing

Build and flash applications as usual (see Building an Application and Run an Application for more details).

# From the root of the zephyr repository
west build -b m5stack_atoms3_lite samples/hello_world

The usual flash target will work with the m5stack_atoms3_lite board configuration. Here is an example for the Hello World application.

# From the root of the zephyr repository
west build -b m5stack_atoms3_lite samples/hello_world
west flash

The baud rate of 921600bps is set by default. If experiencing issues when flashing, try using different values by using --esp-baud-rate <BAUD> option during west flash (e.g. west flash --esp-baud-rate 115200).

You can also open the serial monitor using the following command:

west espressif monitor

After the board has automatically reset and booted, you should see the following message in the monitor:

***** Booting Zephyr OS vx.x.x-xxx-gxxxxxxxxxxxx *****
Hello World! m5stack_atoms3_lite

Debugging

M5Stack AtomS3 Lite debugging is not supported due to pinout limitations.