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Welcome to the zephyr wiki!

• Project Overview

  Zephyr project for Renesas RA MCU devices. It requires hal_renesas module: https://github.com/renesas/hal_renesas for operation.

  To get started with Zephyr, visit website at https://www.zephyrproject.org/ and explore the documentation and tutorials.

• Support RA MCU Devices & Drivers

Devices	IOPORT (GPIO)	UART	SPI	Flash	ULPT (timer)	LPM (system power management)	CGC (clock control)	DTC	RSIP (TRNG - Entropy)	CAN	QSPI	ADC	GPT (pwm)	AGT (counter)	I2C	USB-FS	USB-HS	MIPI-DSI	Ethernet
EK-RA8M1	Support	Support	Support	Support	Support	Support	Support	Support	Support	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning
EK-RA8D1	Support	Support	Support	Support	Support	Support	Support	Support	Support	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning
MCK-RA8T1	Support	Support	Support	Support	Support	Support	Support	Support	Support	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning
RA6 devices	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning
RA4 devices	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning
RA2 devices	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning	Planning

• Repository branches information

Branch name	Information
ra8-support-PR1.3 (latest)	Support RA8 devices and drivers described in Support RA MCU Devices & Drivers
ra8-support-PR1.2	Support EK-RA8M1 and UART only

• Getting Started:

This getting started guide for Ubuntu environment (20.04 LTS), for other environments, please visit Zephyr Getting Started

1. Install dependencies

   wget https://apt.kitware.com/kitware-archive.sh

   sudo bash kitware-archive.sh

   sudo apt install --no-install-recommends git cmake ninja-build gperf \ ccache dfu-util device-tree-compiler wget \ python3-dev python3-pip python3-setuptools python3-tk python3-wheel xz-utils file \ make gcc gcc-multilib g++-multilib libsdl2-dev libmagic1

   Verify the versions of the main dependencies installed on your system

   cmake --version

   python3 --version

   dtc --version

   Tools	Min. Version
   CMake	3.20.5
   Python	3.10
   Devicetree compiler	1.4.6

2. Get Zephyr and install Python dependencies

   • Install west, and make sure ~/.local/bin is on your PATH environment variable:

     pip3 install --user -U west

     echo 'export PATH=~/.local/bin:"$PATH"' >> ~/.bashrc

     source ~/.bashrc

   • Get the Zephyr source code

     west init -m https://github.com/renesas/zephyr.git --mr ra8-support-1.3 ~/zephyrproject

     cd ~/zephyrproject

     west update

   • Export a Zephyr CMake package. This allows CMake to automatically load boilerplate code required for building Zephyr applications

     west zephyr-export

   • Install additional Python dependencies

     pip3 install --user -r ~/zephyrproject/zephyr/scripts/requirements.txt

3. Install the Zephyr SDK

   • Download and verify the Zephyr SDK bundle

     Note: Support from SDKv0.16.6 only

     cd ~

     wget https://github.com/zephyrproject-rtos/sdk-ng/releases/download/v0.16.6/zephyr-sdk-0.16.6_linux-x86_64.tar.xz

     wget -O - https://github.com/zephyrproject-rtos/sdk-ng/releases/download/v0.16.6/sha256.sum | shasum --check --ignore-missing

   • Extract the Zephyr SDK bundle archive:

     tar xvf zephyr-sdk-0.16.6_linux-x86_64.tar.xz

   • Run the Zephyr SDK bundle setup script:

     cd zephyr-sdk-0.16.6 ./setup.sh

   • Install udev rules, which allow you to flash most Zephyr boards as a regular user

     sudo cp ~/zephyr-sdk-0.16.6/sysroots/x86_64-pokysdk-linux/usr/share/openocd/contrib/60-openocd.rules /etc/udev/rules.d

     sudo udevadm control --reload

4. Build the Blinky Sample

   • For EK-RA8M1

     cd ~/zephyrproject/zephyr

     west build -p always -b ek_ra8m1 samples/basic/blinky

   • For EK-RA8D1

     cd ~/zephyrproject/zephyr

     west build -p always -b ek_ra8d1 samples/basic/blinky

   • For MCK-RA8T1

     cd ~/zephyrproject/zephyr

     west build -p always -b mck_ra8m1 samples/basic/blinky

5. Flash the Sample

   west flash

• Other applications

  • UART (echo_bot)

    https://docs.zephyrproject.org/latest/samples/drivers/uart/echo_bot/README.html

    cd ~/zephyrproject/zephyr

    west build -p always -b ek_ra8m1 samples/drivers/uart/echo_bot

    west flash

  • SPI (SPI bitbang)

    https://docs.zephyrproject.org/latest/samples/drivers/spi_bitbang/README.html

    cd ~/zephyrproject/zephyr

    west build -p always -b ek_ra8m1 samples/drivers/spi_bitbang

    west flash

• [Special topic for DTC](#Special topic for DTC)

• Limitations

  • ULPT (timer) is supported as timer in system low power management. To get its feature, must enable PM (CONFIG_PM=y) in application.

  • CGC (Clock control) has just supported 3 basic API:

    1. clock_control_on()
    2. clock_control_off()
    3. clock_control_get_rate()

  • RSIP (TRNG - Entropy) only supports API: entropy_get_entropy()

  • Drivers are verified limitedly with zTest only.

  • "SPI bitbang" sample application hasn't worked in EK-RA8D1 and MCK-RA8T1

• Related Links & Contact Information

  Zephyr: https://docs.zephyrproject.org/

  RA Product Information: www.renesas.com/ra

  RA Product Support Forum: www.renesas.com/ra/forum

  Support: www.renesas.com/support