ATOM Lite
Overview
M5Stack ATOM Lite is an ESP32-based development board from M5Stack.
It features the following integrated components:
ESP32-PICO-D4 chip (240MHz dual core, Wi-Fi/BLE 5.0)
520KB SRAM
SK6812 RGB LED
Infrared LED
1x Grove extension port
Supported Features
The m5stack_atom_lite board supports the hardware features listed below.
- on-chip / on-board
- Feature integrated in the SoC / present on the board.
- 2 / 2
-
Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files. -
vnd,foo -
Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.
m5stack_atom_lite/esp32/appcpu target
Type |
Location |
Description |
Compatible |
|---|---|---|---|
CPU |
on-chip |
Espressif Xtensa LX6 CPU2 |
|
ADC |
on-chip |
ESP32 ADC2 |
|
Bluetooth |
on-chip |
Bluetooth HCI for Espressif ESP321 |
|
CAN |
on-chip |
ESP32 Two-Wire Automotive Interface (TWAI)1 |
|
Clock control |
on-chip |
ESP32 RTC (Power & Clock Controller Module) Module1 |
|
Counter |
on-chip |
ESP32 Counter Driver based on RTC Main Timer1 |
|
on-chip |
ESP32 general-purpose timers4 |
||
DAC |
on-chip |
ESP32 Digital to Analog converter (DAC)1 |
|
Ethernet |
on-chip |
ESP32 Ethernet1 |
|
Flash controller |
on-chip |
ESP32 flash controller1 |
|
GPIO & Headers |
on-chip |
ESP32 GPIO controller2 |
|
I2C |
on-chip |
ESP32 I2C2 |
|
Input |
on-chip |
ESP32 touch sensor input1 |
|
Interrupt controller |
on-chip |
ESP32 Interrupt controller1 |
|
IPM |
on-chip |
ESP32 soft inter processor message1 |
|
Mailbox |
on-chip |
ESP32 soft mailbox1 |
|
MDIO |
on-chip |
ESP32 MDIO controller1 |
|
Memory controller |
on-chip |
ESP32 pseudo-static RAM controller1 |
|
MTD |
on-chip |
Flash node1 |
|
on-chip |
Fixed partitions of a flash (or other non-volatile storage) memory1 |
||
Pin control |
on-chip |
ESP32 pin controller1 |
|
PWM |
on-chip |
ESP32 LED Control (LEDC)1 |
|
on-chip |
ESP32 Motor Control Pulse Width Modulator (MCPWM)2 |
||
RNG |
on-chip |
ESP32 TRNG (True Random Number Generator)1 |
|
SDHC |
on-chip |
ESP32 SDHC controller1 |
|
on-chip |
ESP32 SDHC controller slot2 |
||
Sensors |
on-chip |
ESP32 Pulse Counter (PCNT)1 |
|
Serial controller |
on-chip |
ESP32 UART3 |
|
SPI |
on-chip |
ESP32 SPI2 |
|
SRAM |
on-chip |
Generic on-chip SRAM description2 |
|
Watchdog |
on-chip |
||
Wi-Fi |
on-chip |
ESP32 SoC Wi-Fi1 |
m5stack_atom_lite/esp32/procpu target
Type |
Location |
Description |
Compatible |
|---|---|---|---|
CPU |
on-chip |
Espressif Xtensa LX6 CPU2 |
|
ADC |
on-chip |
ESP32 ADC2 |
|
Bluetooth |
on-chip |
Bluetooth HCI for Espressif ESP321 |
|
CAN |
on-chip |
ESP32 Two-Wire Automotive Interface (TWAI)1 |
|
Clock control |
on-chip |
ESP32 RTC (Power & Clock Controller Module) Module1 |
|
Counter |
on-chip |
ESP32 Counter Driver based on RTC Main Timer1 |
|
on-chip |
ESP32 general-purpose timers4 |
||
DAC |
on-chip |
ESP32 Digital to Analog converter (DAC)1 |
|
Ethernet |
on-chip |
ESP32 Ethernet1 |
|
Flash controller |
on-chip |
ESP32 flash controller1 |
|
GPIO & Headers |
on-chip |
ESP32 GPIO controller2 |
|
on-board |
GPIO pins exposed on Grove 4 pins headers1 |
||
I2C |
on-chip |
ESP32 I2C2 |
|
Input |
on-chip |
ESP32 touch sensor input1 |
|
on-board |
Group of GPIO-bound input keys1 |
||
Interrupt controller |
on-chip |
ESP32 Interrupt controller1 |
|
IPM |
on-chip |
ESP32 soft inter processor message1 |
|
LED |
on-board |
Group of GPIO-controlled LEDs1 |
|
LED strip |
on-board |
Worldsemi WS2812 LED strip, SPI binding1 |
|
Mailbox |
on-chip |
ESP32 soft mailbox1 |
|
MDIO |
on-chip |
ESP32 MDIO controller1 |
|
Memory controller |
on-chip |
ESP32 pseudo-static RAM controller1 |
|
MTD |
on-chip |
Flash node1 |
|
on-chip |
Fixed partitions of a flash (or other non-volatile storage) memory1 |
||
Pin control |
on-chip |
ESP32 pin controller1 |
|
PWM |
on-chip |
ESP32 LED Control (LEDC)1 |
|
on-chip |
ESP32 Motor Control Pulse Width Modulator (MCPWM)2 |
||
RNG |
on-chip |
ESP32 TRNG (True Random Number Generator)1 |
|
SDHC |
on-chip |
ESP32 SDHC controller1 |
|
on-chip |
ESP32 SDHC controller slot2 |
||
Sensors |
on-chip |
ESP32 Pulse Counter (PCNT)1 |
|
Serial controller |
on-chip |
||
SPI |
on-chip |
||
SRAM |
on-chip |
Generic on-chip SRAM description2 |
|
Watchdog |
on-chip |
||
Wi-Fi |
on-chip |
ESP32 SoC Wi-Fi1 |
Start Application Development
Before powering up your M5Stack ATOM 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_atom_lite/esp32/procpu samples/hello_world
The usual flash target will work with the m5stack_atom_lite board
configuration. Here is an example for the Hello World
application.
# From the root of the zephyr repository
west build -b m5stack_atom_lite/esp32/procpu 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_atom_lite
Debugging
M5Stack ATOM Lite debugging is not supported due to pinout limitations.
