boards/nxp/frdm_mcxc242/doc/index.rst
.. zephyr:board:: frdm_mcxc242
Overview
FRDM-MCXC242 is a compact and scalable development board for rapid prototyping of MCX C242 MCU. It offers industry standard headers for easy access to the MCU’s I/Os, integrated open-standard serial interfaces and on-board MCU-Link debugger. The MCXC is a general purpose ultra-low-power MCU family, providing additional memory, communications and analog peripheral.
Hardware
For more information about the MCXC242 SoC and FRDM-MCXC242 board, see these references:
MCX C14x/24x/44x Website_MCX C24x Datasheet_MCX C24x Reference Manual_FRDM-MCXC242 Website_FRDM-MCXC242 User Manual_FRDM-MCXC242 Design Files_.. zephyr:board-supported-hw::
The MCXC242 SoC has five pairs of pinmux/gpio controllers (PORTA/GPIOA, PORTB/GPIOB, PORTC/GPIOC, PORTD/GPIOD, and PORTE/GPIOE) for the FRDM-MCXC242 board.
+-------+-------------+---------------------------+ | Name | Function | Usage | +=======+=============+===========================+ | PTE16 | ADC | ADC0 channel 1 | +-------+-------------+---------------------------+ | PTB18 | GPIO | Red LED | +-------+-------------+---------------------------+ | PTB19 | GPIO | Green LED | +-------+-------------+---------------------------+ | PTA13 | GPIO | Blue LED | +-------+-------------+---------------------------+ | PTA1 | LPUART0_RX | UART Console | +-------+-------------+---------------------------+ | PTA2 | LPUART0_TX | UART Console | +-------+-------------+---------------------------+ | PTE1 | LPUART1_RX | UART | +-------+-------------+---------------------------+ | PTE0 | LPUART1_TX | UART | +-------+-------------+---------------------------+ | PTA20 | RESET | RESET Button SW1 | +-------+-------------+---------------------------+ | PTC1 | GPIO | User button SW2 | +-------+-------------+---------------------------+ | PTA4 | GPIO | User button SW3 | +-------+-------------+---------------------------+ | PTD6 | I2C1_SDA | I2C accelerometer | +-------+-------------+---------------------------+ | PTD7 | I2C1_SCL | I2C accelerometer | +-------+-------------+---------------------------+
The MCXC242 SoC is configured to use HIRC running at 48 MHz as a system clock source.
The MCXC242 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).
A debug probe is used for both flashing and debugging the board. This board is configured by default to use the MCU-Link CMSIS-DAP Onboard Debug Probe.
Linkserver is the default runner for this board, and supports the factory
default MCU-Link firmware. Follow the instructions in
:ref:mcu-link-cmsis-onboard-debug-probe to reprogram the default MCU-Link
firmware. This only needs to be done if the default onboard debug circuit
firmware was changed. To put the board in DFU mode to program the firmware,
short jumper JP1.
There are two options. The onboard debug circuit can be updated with Segger
J-Link firmware by following the instructions in
:ref:mcu-link-jlink-onboard-debug-probe.
To be able to program the firmware, you need to put the board in DFU mode
by shortening the jumper JP1.
The second option is to attach a :ref:jlink-external-debug-probe to the
10-pin SWD connector (J10) of the board. Additionally, the jumper JP3 must
be shortened.
For both options use the -r jlink option with west to use the jlink runner.
.. code-block:: console
west flash -r jlink
Connect a USB cable from your PC to J9, and use the serial terminal of your choice (minicom, putty, etc.) with the following settings:
Here is an example for the :zephyr:code-sample:hello_world application.
.. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: frdm_mcxc242 :goals: flash
Open a serial terminal, reset the board (press the SW1 button), and you should see the following message in the terminal:
.. code-block:: console
*** Booting Zephyr OS build v3.6.0-4475-gfa5bd8bb098e *** Hello World! frdm_mcxc242/mcxc242
Here is an example for the :zephyr:code-sample:hello_world application.
.. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: frdm_mcxc242 :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 v3.6.0-4475-gfa5bd8bb098e *** Hello World! frdm_mcxc242/mcxc242
.. include:: ../../common/board-footer.rst.inc
.. _MCX C24x Datasheet: https://www.nxp.com/docs/en/data-sheet/MCXC24XP64M48SF2.pdf
.. _MCX C24x Reference Manual: https://www.nxp.com/webapp/Download?colCode=MCXC24XP64M48RM
.. _FRDM-MCXC242 Website: https://www.nxp.com/design/design-center/development-boards-and-designs/general-purpose-mcus/frdm-development-board-for-mcx-c242-mcus:FRDM-MCXC242
.. _FRDM-MCXC242 User Manual: https://www.nxp.com/webapp/Download?colCode=UM12119
.. _FRDM-MCXC242 Design Files: https://www.nxp.com/webapp/Download?colCode=FRDM-MCXC242-DESIGN-FILES