.. zephyr:board:: pg23_pk2504a

Overview

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The EFM32PG23 Pearl Gecko Board dev kit contains a System-On-Chip from the EFM32PG23 family built on an ARM Cortex®-M33 processor with excellent low power capabilities.

Hardware

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• EFM32PG23B310F512IM48 Pearl Gecko SoC
• CPU core: ARM Cortex®-M33
• Flash memory: 512 kB
• RAM: 64 kB
• Key features:
  • USB connectivity
  • Advanced Energy Monitor (AEM)
  • SEGGER J-Link on-board debugger
  • Debug multiplexer supporting external hardware as well as on-board MCU
  • 4x10 segment LCD
  • User LEDs and push buttons
  • Silicon Labs' Si7021 Relative Humidity and Temperature Sensor
  • SMA connector for IADC demonstration
  • Inductive LC sensor
  • 20-pin 2.54 mm header for expansion boards
  • Breakout pads for direct access to I/O pins
  • Power sources include USB and CR2032 coin cell battery

For more information about the EFM32PG23 SoC and BRD2504A board, refer to these documents:

• EFM32PG23 Website_
• EFM32PG23 Datasheet_
• EFM32PG23 Reference Manual_
• BRD2504A User Guide_

Supported Features

.. zephyr:board-supported-hw::

Connections and IOs

In the following table, the column Name contains Pin names. For example, PA2 means Pin number 2 on Port A, as used in the board's datasheets and manuals.

+------+-----------------+---------------------+ | Name | Function | Usage | +======+=================+=====================+ | PA5 | GPIO | Push Button 0 | +------+-----------------+---------------------+ | PA7 | I2C0_SDA | Si7021 I2C Data | +------+-----------------+---------------------+ | PA8 | I2C0_SCL | Si7021 I2C Clock | +------+-----------------+---------------------+ | PB4 | GPIO | Push Button 1 | +------+-----------------+---------------------+ | PB5 | EUSART0_TX | Console Tx | +------+-----------------+---------------------+ | PB6 | EUSART0_RX | Console Rx | +------+-----------------+---------------------+ | PC8 | GPIO/TIMER0_CC0 | LED0 | +------+-----------------+---------------------+ | PC9 | GPIO/TIMER0_CC1 | LED1 | +------+-----------------+---------------------+

The default configuration can be found in :zephyr_file:boards/silabs/dev_kits/pg23_pk2504a/pg23_pk2504a_defconfig

System Clock

The EFM32PG23 SoC is configured to use the 39 MHz external oscillator on the board.

Serial Port

The EFM32PG23 SoC has one USART and three EUSARTs. EUSART0 is connected to the board controller and is used for the console.

Programming and Debugging

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.. zephyr:board-supported-runners::

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

Flashing

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: pg23_pk2504a :goals: build

Connect the pg23_pk2504a to your host computer using the USB port and you should see a USB connection.

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! pg23_pk2504a

Troubleshooting

If no serial output occurs, use SEGGERs RTT Viewer and update :zephyr_file:boards/silabs/dev_kits/pg23_pk2504a/pg23_pk2504a_defconfig with

.. code-block:: console

CONFIG_UART_CONSOLE=n CONFIG_RTT_CONSOLE=y CONFIG_USE_SEGGER_RTT=y

.. _EFM32PG23 Website: https://www.silabs.com/mcu/32-bit-microcontrollers/efm32pg23-series-2#

.. _EFM32PG23 Datasheet: https://www.silabs.com/documents/public/data-sheets/efm32pg23-datasheet.pdf

.. _EFM32PG23 Reference Manual: https://www.silabs.com/documents/public/reference-manuals/efm32pg23-rm.pdf

.. _BRD2504A User Guide: https://www.silabs.com/documents/public/user-guides/ug515-efm32pg23-brd2504a-user-guide.pdf