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Overview

boards/renesas/fpb_ra4e1/doc/index.rst

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.. zephyr:board:: fpb_ra4e1

Overview

The Renesas RA4E1 Group delivers up to 100 MHz of CPU performance using an Arm® Cortex®-M33 core with 512 KB code flash memory, 8 KB of data flash memory, and 128 KB of SRAM. RA4E1 MCUs offer leading-performance. The RA4E1 Group offers a wide set of peripherals, including USB 2.0 Full-Speed, Quad SPI, and advanced analog.

The MCU in this series incorporates a high-performance Arm Cortex®-M33 core running up to 100 MHz with the following features:

MCU Native Pin Access

  • R7FA4E10D2CFM MCU (referred to as RA MCU)
  • 100 MHz, Arm® Cortex®-M33 core
  • 512 KB Code Flash, 8 KB Data Flash, 128 KB SRAM
  • 64 pins, LQFP package
  • Native pin access through 2 x 50-pin male headers (not fitted)
  • MCU current measurement point for precision current consumption measurement
  • Multiple clock sources - Low-precision (~1%) clocks are available internal to the RA MCU. RA MCU oscillator and sub-clock oscillator crystals, providing precision 24.000 MHz (not fitted) and 32,768 Hz reference clocks are also available

System Control and Ecosystem Access

  • Two 5 V input sources

    • USB (Debug, Full Speed)
    • External power supply (using 2-pin header) (not fitted)

  • Built-in SEGGER J-Link Emulator On-Board programmer/debugger (SWD)

  • User LEDs and buttons

    • Two User LEDs (green)
    • Power LED (green) (not fitted) indicating availability of regulated power
    • Debug/power LED (yellow) indicating power and the debug connection
    • One User button
    • One Reset button

  • Two popular ecosystem expansions

    • Two Digilent PmodTM (SPI, UART) connectors (not fitted)
    • ArduinoTM (Uno R3) connectors

  • MCU boot configuration jumper (not fitted)

Hardware

Detailed hardware features can be found at:

  • RA4E1 MCU: RA4E1 Group User's Manual Hardware_
  • FPB-RA4E1 board: FPB-RA4E1 - User's Manual_

Supported Features

.. zephyr:board-supported-hw::

Programming and Debugging

.. zephyr:board-supported-runners::

Applications for the fpb_ra4e1 board can be built, flashed, and debugged in the usual way. See :ref:build_an_application and :ref:application_run for more details on building and running.

Flashing

Program can be flashed to FPB-RA4E1 via the on-board SEGGER J-Link debugger. SEGGER J-link's drivers are available at https://www.segger.com/downloads/jlink/

To flash the program to board

  1. Connect to J-Link OB via USB port to host PC

  2. Make sure J-Link OB jumper is in default configuration as describe in FPB-RA4E1 - User's Manual_

  3. Execute west command

    .. code-block:: console

     west flash -r jlink

Debugging

You can use Segger Ozone (Segger Ozone Download_) for a visual debug interface

Once downloaded and installed, open Segger Ozone and configure the debug project like so:

  • Target Device: R7FA4E10D
  • Target Interface: SWD
  • Target Interface Speed: 4 MHz
  • Host Interface: USB
  • Program File: <path/to/your/build/zephyr.elf>

Note: It's verified that we can debug OK on Segger Ozone v3.30d so please use this or later version of Segger Ozone

References

  • FPB-RA4E1 Website_
  • RA4E1 MCU group Website_

.. _FPB-RA4E1 Website: https://www.renesas.com/en/products/microcontrollers-microprocessors/ra-cortex-m-mcus/fpb-ra4e1-fast-prototyping-board-ra4e1-mcu-group

.. _RA4E1 MCU group Website: https://www.renesas.com/en/products/microcontrollers-microprocessors/ra-cortex-m-mcus/ra4e1-100mhz-arm-cortex-m33-entry-line-balanced-low-power-consumption-optimized-feature-integration

.. _FPB-RA4E1 - User's Manual: https://www.renesas.com/en/document/mat/fpb-ra4e1-users-manual

.. _RA4E1 Group User's Manual Hardware: https://www.renesas.com/en/document/mah/ra4e1-group-users-manual-hardware

.. _Segger Ozone Download: https://www.segger.com/downloads/jlink#Ozone