.. zephyr:board:: slstk3701a

Overview

The EFM32 Giant Gecko Starter Kit SLSTK3701A contains an MCU from the EFM32GG Series 1 family built on an ARM® Cortex®-M4F processor with excellent low power capabilities.

Hardware

Advanced Energy Monitoring provides real-time information about the energy consumption of an application or prototype design.
Ultra low power 128x128 pixel color Memory-LCD
2 user buttons, 2 LEDs and a touch slider
Relative humidity, magnetic Hall Effect and inductive-capacitive metal sensor
USB interface for Host/Device/OTG
32 Mb Quad-SPI Flash memory
SD card slot
RJ-45 Ethernet jack
2 digital microphones
On-board Segger J-Link USB debugger

For more information about the EFM32GG11 SoC and SLSTK3701A board:

EFM32GG Series 1 Website_
EFM32GG11 Datasheet_
EFM32GG11 Reference Manual_
SLSTK3701A Website_
SLSTK3701A User Guide_
SLSTK3701A Schematics_

Supported Features

.. zephyr:board-supported-hw::

Connections and IOs

The EFM32GG11 SoC has nine GPIO controllers (PORTA to PORTI), all of which are currently enabled for the SLSTK3701A board.

In the following table, the column Name contains pin names. For example, PE1 means pin number 1 on PORTE, as used in the board's datasheets and manuals.

+-------+-------------+-------------------------------------+ | Name | Function | Usage | +=======+=============+=====================================+ | PH10 | GPIO | LED0 red | +-------+-------------+-------------------------------------+ | PH11 | GPIO | LED0 green | +-------+-------------+-------------------------------------+ | PH12 | GPIO | LED0 blue | +-------+-------------+-------------------------------------+ | PH13 | GPIO | LED1 red | +-------+-------------+-------------------------------------+ | PH14 | GPIO | LED1 green | +-------+-------------+-------------------------------------+ | PH15 | GPIO | LED1 blue | +-------+-------------+-------------------------------------+ | PC8 | GPIO | Push Button PB0 | +-------+-------------+-------------------------------------+ | PC9 | GPIO | Push Button PB1 | +-------+-------------+-------------------------------------+ | PE1 | GPIO | Board Controller Enable | | | | EFM_BC_EN | +-------+-------------+-------------------------------------+ | PH4 | UART_TX | UART TX Console VCOM_TX US0_TX #4 | +-------+-------------+-------------------------------------+ | PH5 | UART_RX | UART RX Console VCOM_RX US0_RX #4 | +-------+-------------+-------------------------------------+ | PI4 | I2C_SDA | SENSOR_I2C_SDA I2C2_SDA #7 | +-------+-------------+-------------------------------------+ | PI5 | I2C_SCL | SENSOR_I2C_SCL I2C2_SCL #7 | +-------+-------------+-------------------------------------+

System Clock

The EFM32GG11 SoC is configured to use the 50 MHz external oscillator on the board.

Serial Port

The EFM32GG11 SoC has six USARTs, two UARTs and two Low Energy UARTs (LEUART). USART4 is connected to the board controller and is used for the console.

Programming and Debugging

.. zephyr:board-supported-runners::

.. note:: Before using the kit the first time, you should update the J-Link firmware in Simplicity Studio.

Flashing

The SLSTK3701A includes an J-Link_ serial and debug adaptor built into the board. The adaptor provides:

A USB connection to the host computer, which exposes a mass storage device and a USB serial port.
A serial flash device, which implements the USB flash disk file storage.
A physical UART connection which is relayed over interface USB serial port.

Flashing an application to SLSTK3701A

The sample application :zephyr:code-sample:hello_world is used for this example. Build the Zephyr kernel and application:

.. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: slstk3701a :goals: build

Connect the SLSTK3701A to your host computer using the USB port and you should see a USB connection which exposes a mass storage device(STK3701A) and a USB Serial Port. Copy the generated zephyr.bin to the STK3701A drive.

Open a serial terminal (minicom, putty, etc.) with the following settings:

Speed: 115200
Data: 8 bits
Parity: None
Stop bits: 1

Reset the board and you'll see the following message on the corresponding serial port terminal session:

.. code-block:: console

Hello World! slstk3701a

.. _SLSTK3701A Website: https://www.silabs.com/products/development-tools/mcu/32-bit/efm32-giant-gecko-gg11-starter-kit

.. _SLSTK3701A User Guide: https://www.silabs.com/documents/public/user-guides/ug287-stk3701.pdf

.. _SLSTK3701A Schematics: https://www.silabs.com/documents/public/schematic-files/BRD2204A-B00-schematic.pdf

.. _EFM32GG Series 1 Website: https://www.silabs.com/products/mcu/32-bit/efm32-giant-gecko-s1

.. _EFM32GG11 Datasheet: https://www.silabs.com/documents/public/data-sheets/efm32gg11-datasheet.pdf

.. _EFM32GG11 Reference Manual: https://www.silabs.com/documents/public/reference-manuals/efm32gg11-rm.pdf

.. _J-Link: https://www.segger.com/jlink-debug-probes.html