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boards: Add support for PG23 Pro Kit and PG28 Pro Kit
Adding pg23_pk2504a and pg28_pk2506a boards files. Signed-off-by: Christoph Jans <[email protected]>
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‎boards/silabs/dev_kits/pg23_pk2504a/Kconfig.defconfig‎

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# Copyright (c) 2025 Christoph Jans
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# SPDX-License-Identifier: Apache-2.0
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if BOARD_PG23_PK2504A
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config LOG_BACKEND_SWO_FREQ_HZ
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default 875000
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depends on LOG_BACKEND_SWO
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endif

‎boards/silabs/dev_kits/pg23_pk2504a/Kconfig.pg23_pk2504a‎

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# Copyright (c) 2025 Christoph Jans
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# SPDX-License-Identifier: Apache-2.0
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config BOARD_PG23_PK2504A
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select SOC_EFM32PG23B310F512IM48

‎boards/silabs/dev_kits/pg23_pk2504a/board.cmake‎

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# SPDX-License-Identifier: Apache-2.0
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board_runner_args(jlink "--device=EFM32PG23BxxxF512")
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include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)
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board_runner_args(openocd)
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include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake)
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board_runner_args(silabs_commander "--device=EFM32PG23BxxxF512")
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include(${ZEPHYR_BASE}/boards/common/silabs_commander.board.cmake)

‎boards/silabs/dev_kits/pg23_pk2504a/board.yml‎

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board:
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name: pg23_pk2504a
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full_name: EFM32PG23 Pro Kit (PG23-PK2504A)
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vendor: silabs
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socs:
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- name: efm32pg23b310f512im48

‎boards/silabs/dev_kits/pg23_pk2504a/doc/index.rst‎

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.. zephyr:board:: pg23_pk2504a
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Overview
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********
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The EFM32PG23 Pearl Gecko Board dev kit contains
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a System-On-Chip from the EFM32PG23 family built on an
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ARM Cortex®-M33 processor with excellent low power capabilities.
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Hardware
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********
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- EFM32PG23B310F512IM48 Pearl Gecko SoC
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- CPU core: ARM Cortex®-M33
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- Flash memory: 512 kB
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- RAM: 64 kB
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- Key features:
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- USB connectivity
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- Advanced Energy Monitor (AEM)
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- SEGGER J-Link on-board debugger
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- Debug multiplexer supporting external hardware as well as on-board MCU
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- 4x10 segment LCD
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- User LEDs and push buttons
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- Silicon Labs' Si7021 Relative Humidity and Temperature Sensor
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- SMA connector for IADC demonstration
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- Inductive LC sensor
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- 20-pin 2.54 mm header for expansion boards
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- Breakout pads for direct access to I/O pins
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- Power sources include USB and CR2032 coin cell battery
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For more information about the EFM32PG23 SoC and BRD2504A board, refer to these
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documents:
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- `EFM32PG23 Website`_
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- `EFM32PG23 Datasheet`_
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- `EFM32PG23 Reference Manual`_
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- `BRD2504A User Guide`_
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Supported Features
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==================
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.. zephyr:board-supported-hw::
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Connections and IOs
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===================
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In the following table, the column **Name** contains Pin names. For example, PA2
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means Pin number 2 on Port A, as used in the board's datasheets and manuals.
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+------+-----------------+---------------------+
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| Name | Function | Usage |
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+======+=================+=====================+
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| PA5 | GPIO | Push Button 0 |
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+------+-----------------+---------------------+
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| PA7 | I2C0_SDA | Si7021 I2C Data |
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+------+-----------------+---------------------+
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| PA8 | I2C0_SCL | Si7021 I2C Clock |
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+------+-----------------+---------------------+
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| PB4 | GPIO | Push Button 1 |
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+------+-----------------+---------------------+
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| PB5 | EUSART0_TX | Console Tx |
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+------+-----------------+---------------------+
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| PB6 | EUSART0_RX | Console Rx |
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+------+-----------------+---------------------+
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| PC8 | GPIO/TIMER0_CC0 | LED0 |
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+------+-----------------+---------------------+
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| PC9 | GPIO/TIMER0_CC1 | LED1 |
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+------+-----------------+---------------------+
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The default configuration can be found in
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:zephyr_file:`boards/silabs/dev_kits/pg23_pk2504a/pg23_pk2504a_defconfig`
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System Clock
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============
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The EFM32PG23 SoC is configured to use the 39 MHz external oscillator on the
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board.
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Serial Port
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===========
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The EFM32PG23 SoC has one USART and three EUSARTs.
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EUSART0 is connected to the board controller and is used for the console.
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Programming and Debugging
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*************************
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.. zephyr:board-supported-runners::
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.. note::
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Before using the kit the first time, you should update the J-Link firmware
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in Simplicity Studio.
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Flashing
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========
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The sample application :zephyr:code-sample:`hello_world` is used for this example.
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Build the Zephyr kernel and application:
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.. zephyr-app-commands::
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:zephyr-app: samples/hello_world
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:board: pg23_pk2504a
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:goals: build
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Connect the pg23_pk2504a to your host computer using the USB port and you
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should see a USB connection.
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Open a serial terminal (minicom, putty, etc.) with the following settings:
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- Speed: 115200
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- Data: 8 bits
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- Parity: None
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- Stop bits: 1
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Reset the board and you'll see the following message on the corresponding serial port
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terminal session:
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.. code-block:: console
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Hello World! pg23_pk2504a
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Troubleshooting
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===============
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If no serial output occurs, use SEGGERs RTT Viewer and update :zephyr_file:`boards/silabs/dev_kits/pg23_pk2504a/pg23_pk2504a_defconfig` with
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.. code-block:: console
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CONFIG_UART_CONSOLE=n
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CONFIG_RTT_CONSOLE=y
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CONFIG_USE_SEGGER_RTT=y
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.. _EFM32PG23 Website:
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https://www.silabs.com/mcu/32-bit-microcontrollers/efm32pg23-series-2#
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.. _EFM32PG23 Datasheet:
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https://www.silabs.com/documents/public/data-sheets/efm32pg23-datasheet.pdf
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.. _EFM32PG23 Reference Manual:
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https://www.silabs.com/documents/public/reference-manuals/efm32pg23-rm.pdf
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.. _BRD2504A User Guide:
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https://www.silabs.com/documents/public/user-guides/ug515-efm32pg23-brd2504a-user-guide.pdf

‎boards/silabs/dev_kits/pg23_pk2504a/doc/pg23_pk2504a.webp‎

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‎boards/silabs/dev_kits/pg23_pk2504a/pg23_pk2504a-pinctrl.dtsi‎

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/*
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* Copyright (c) 2025 Christoph Jans
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/dt-bindings/pinctrl/silabs/xg23-pinctrl.h>
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&pinctrl {
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eusart0_default: eusart0_default {
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group0 {
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pins = <EUSART0_TX_PB5>;
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drive-push-pull;
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output-high;
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};
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group1 {
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pins = <EUSART0_RX_PB6>;
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input-enable;
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silabs,input-filter;
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};
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};
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i2c0_default: i2c0_default {
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group0 {
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pins = <I2C0_SCL_PA8>, <I2C0_SDA_PA7>;
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drive-open-drain;
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bias-pull-up;
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};
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};
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timer0_default: timer0_default {
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group0 {
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pins = <TIMER0_CC0_PC8>, <TIMER0_CC1_PC9>;
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drive-push-pull;
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output-high;
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};
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};
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};

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