ESP32-S2 Lolin Mini
Overview
ESP32-S2 is a highly integrated, low-power, single-core Wi-Fi Microcontroller SoC, designed to be secure and cost-effective, with a high performance and a rich set of IO capabilities. [1]
The features include the following:
RSA-3072-based secure boot
AES-XTS-256-based flash encryption
Protected private key and device secrets from software access
Cryptographic accelerators for enhanced performance
Protection against physical fault injection attacks
Various peripherals:
43x programmable GPIOs
14x configurable capacitive touch GPIOs
USB OTG
LCD interface
camera interface
SPI
I2S
UART
ADC
DAC
LED PWM with up to 8 channels
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 esp32s2_lolin_mini samples/hello_world
The usual flash target will work with the esp32s2_lolin_mini board
configuration after putting the board into bootloader mode by holding the ‘0’
button then pressing ‘RST’ and releasing the ‘RST’ button.
Here is an example for the Hello World application.
# From the root of the zephyr repository
west build -b esp32s2_lolin_mini samples/hello_world
west flash
Open a serial port using e.g. screen
screen /dev/ttyUSB0 115200
After the board has been manually reset and booted, you should see the following message in the monitor:
***** Booting Zephyr OS vx.x.x-xxx-gxxxxxxxxxxxx *****
Hello World! esp32s2_lolin_mini