Renesas RH850 Zephyr Support - renesas/zephyr GitHub Wiki

The following content in this page describes current Zephyr support status for Renesas RH850 Automotive MCU family, for detail about RH850 MCUs, please visit RH850 Automotive Microcontrollers (MCUs)

Table of contents
List of supported RH850 devices on Zephyr
HWIP support status:
Build and Flash guideline
WIP integration branch information

List of supported RH850 devices on Zephyr

Board name	Status	Samples and demo Hardware connection
Y-RH850-U2B-292PIN-PB-T1-V1	Available on Renesas wip_rh850 branch	RH850-U2B-292PIN Sample and Demo hardware configuration
Y-RH850-U2B-468PIN-PB-T1-V1	Available on Renesas wip_rh850 branch	RH850-U2B-468PIN Sample and Demo hardware configuration

HWIP support status:

RH850/U2B10 (G4MH): 292, 468 pins variant

Renesas HW IP	Mapping to Zephyr	Status	Board
I/O Ports	Pinctrl	Available on Renesas wip_rh850 branch, planning for Zephyr v4.5	All available devices
RLIN3 (UART)	UART	Available on Renesas wip_rh850 branch, planning for Zephyr v4.5	All available devices
OSTM	System Timer	Available on Renesas wip_rh850 branch, planning for Zephyr v4.5	All available devices

Build and Flash guideline

For required tool and environment setup to develop Zephyr, please check: Getting started guide

Currently RH850 arch hasn't support on Zephyr SDK yet, so we need to setup IAR RH850 toolchain.

Following step are required for build and flashing Zephyr binary image to RH850 board.

Software preparation:

Download and install a release v3.20.1 or newer of IAR toolchain for RH850: https://www.iar.com/embedded-development-tools
Download and install Renesas Flash Programmer: https://www.renesas.com/en/software-tool/renesas-flash-programmer-programming-gui

NOTE: Please make sure that the installed software are added into environment PATH

Build environment setup:

Set Zephyr toolchain variant to IAR: $ export ZEPHYR_TOOLCHAIN_VARIANT=iar
Export IAR toolchain PATH for Zephyr build system: $ export IAR_TOOLCHAIN_PATH=<path/to/your/rh850>

e.g

$ export IAR_TOOLCHAIN_PATH=/opt/toolchains/IAR/ewrh850-3.20.1/bin/rh850

Build command: $ west build -b pb_rh850u2b_292pin -p always samples/hello_world

Flash command: $ west flash

WIP integration branch information

Branch name	Information
wip_rh850	Work in progress for RH850 platforms. Contain latest supports for RH850 platforms. It included modules under review in Pull Request (PR).