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Overview

boards/nxp/frdm_k32l2b3/doc/index.rst

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.. zephyr:board:: frdm_k32l2b3

Overview

The FRDM-K32L2B3 FRDM development board provides a platform for evaluation and development of the K32 L2B SoC Family. The board provides easy Access to K32 L2B SoC I/O.

Hardware

  • K32L2B31VLH0A SoC running at up to 48 MHz, 256 kB flash memory, 32 kB SRAM memory.
  • Full-speed USB port with micro A/B connector for device functionality.
  • NXP FXOS8700CQ digital sensor, 3D accelerometer (±2g/±4g/±8g) + 3D magnetometer.
  • On-board segment LCD.
  • Form factor compatible with Arduino® Rev3 pin layout.
  • OpenSDA debug interface.

For more information about the K32L2B31VLH0A SoC and FRDM-K32L2B3 board:

  • FRDM-KL32L2B3 Website_
  • KL32-L2 Website_

Supported Features

.. zephyr:board-supported-hw::

Connections and IOs

The K32L2B31VLH0A SoC has five pairs of pinmux/gpio controllers, and all are currently enabled (PORTA/GPIOA, PORTB/GPIOB, PORTC/GPIOC, PORTD/GPIOD, and PORTE/GPIOE) for the FRDM-K32L2B3 board.

+-------+-------------+---------------------------+ | Name | Function | Usage | +=======+=============+===========================+ | PTD5 | GPIO | Green LED | +-------+-------------+---------------------------+ | PTE31 | GPIO | Red LED | +-------+-------------+---------------------------+ | PTA4 | GPIO | User Button 1 (SW1) | +-------+-------------+---------------------------+ | PTC3 | GPIO | User Button 2 (SW2) | +-------+-------------+---------------------------+ | PTA1 | LPUART0_RX | UART Console | +-------+-------------+---------------------------+ | PTA2 | LPUART0_TX | UART Console | +-------+-------------+---------------------------+ | PTE24 | I2C0_SCL | I2C Accelerometer | +-------+-------------+---------------------------+ | PTE25 | I2C0_SDA | I2C Accelerometer | +-------+-------------+---------------------------+

System Clock

The K32L2B31VLH0A SoC is configured to use the 32.768 kHz external oscillator on the board to generate a 48 MHz system clock.

Serial Port

The K32L2B31VLH0A LPUART0 is used for the console.

Programming and Debugging

.. zephyr:board-supported-runners::

Build and flash applications as usual (see :ref:build_an_application and :ref:application_run for more details).

Configuring a Debug Probe

A debug probe is used for both flashing and debugging the board. This board is configured by default to use the :ref:opensda-daplink-onboard-debug-probe.

For more information about OpenSDA and firmware applications check OpenSDA FRDM-K32L2B3_.

Using LinkServer

Install the :ref:linkserver-debug-host-tools and make sure they are in your search path. LinkServer works with the CMSIS-DAP firmware. Please follow the instructions on :ref:opensda-daplink-onboard-debug-probe and select the latest revision of the firmware image.

LinkServer is the default for this board, west flash and west debug will call the linkserver runner.

.. code-block:: console

west flash west debug

Using pyOCD

Install the :ref:pyocd-debug-host-tools and make sure they are in your search path. pyOCD works with the CMSIS-DAP firmware.

Add the arguments -DBOARD_FLASH_RUNNER=pyocd and -DBOARD_DEBUG_RUNNER=pyocd when you invoke west build to override the default runner from linkserver to pyocd:

.. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: frdm_k32l2b3 :gen-args: -DBOARD_FLASH_RUNNER=pyocd -DBOARD_DEBUG_RUNNER=pyocd :goals: build

Configuring a Console

Regardless of your choice in debug probe, we will use the OpenSDA microcontroller as a usb-to-serial adapter for the serial console.

Connect a USB cable from your PC to J13.

Use the following settings with your serial terminal of choice (minicom, putty, etc.):

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

Flashing

Here is an example for the :zephyr:code-sample:hello_world application.

.. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: frdm_k32l2b3 :goals: flash

Open a serial terminal, reset the board (press the SW2 button), and you should see the following message in the terminal:

.. code-block:: console

*** Booting Zephyr OS build v4.1.0-7032-g3198db1b1229 *** Hello World! frdm_k32l2b3/k32l2b31a

Debugging

Here is an example for the :zephyr:code-sample:hello_world application.

.. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: frdm_k32l2b3 :goals: debug

Open a serial terminal, step through the application in your debugger, and you should see the following message in the terminal:

.. code-block:: console

*** Booting Zephyr OS build v4.1.0-7032-g3198db1b1229 *** Hello World! frdm_k32l2b3/k32l2b31a

.. include:: ../../common/board-footer.rst.inc

.. _KL32-L2 Website: https://www.nxp.com/products/K32-L2

.. _FRDM-KL32L2B3 Website: https://www.nxp.com/design/design-center/development-boards-and-designs/general-purpose-mcus/nxp-frdm-development-platform-for-k32-l2b-mcus:FRDM-K32L2B3

.. _OpenSDA FRDM-K32L2B3: https://www.nxp.com/design/design-center/development-boards-and-designs/OPENSDA#FRDM-K32L2B3