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 list at the bottom of the left panel and select the desired version.

Seeed Studio XIAO Expansion Board

Overview

Seeed Studio XIAO Expansion Board is a powerful functional expansion board for Seeed Studio XIAO series of only half Raspberry Pi 4 size. It enables building prototypes and projects in an easy and quick way. With its rich peripherals, you could explore the infinite possibilities of Seeed Studio XIAO series.

Pin Assignments

Shield Connector Pin	Function
0	Grove*1 (A0, D0)
1	User button
2	MicroSD SPI CSn
3	Buzzer(A3)
4	Grove*2 I2C SDA
5	Grove*2 I2C SCL
6	Grove*1 UART TX
7	Grove*1 UART RX
8	MicroSD SPI SCK (Serial Clock Input)
9	MicroSD SPI MISO (Serial Data Input)
10	MicroSD SPI MOSI (Serial Data Output)

Programming

LED Button Sample

Set --shield seeed_xiao_expansion_board when you invoke west build. For example:

# From the root of the zephyr repository
west build -b xiao_ble/nrf52840 --shield seeed_xiao_expansion_board samples/basic/button

LVGL Basic Sample

Set --shield seeed_xiao_expansion_board when you invoke west build. For example:

# From the root of the zephyr repository
west build -b xiao_ble/nrf52840 --shield seeed_xiao_expansion_board samples/subsys/display/lvgl