.. zephyr:board:: mcb_rx26t

Overview

MCB-RX26T Type B is a CPU board for motor control evaluation. By using this product in combination with an inverter board, motor control using RX26T can be easily performed.

MCU Native Pin Access

The MCB-RX26T Type B includes:

• CPU maximum operating frequency 120MHz, 32-bit RXv3 Core
• Package/Pin count: LFQFP/100 pin
• ROM/RAM: 512KB/64KB
• MCU input clock: 10MHz (Generate with external crystal oscillator)

System Control and Debugging

• Power supply: DC 5V,3.3V (selectable with jumper switch) Select one way automatically from the below

  • USB-powered (debug port)
  • External power supply via standard input

• Debugging support:

  • Via E2lite debugger with E2OB (Onboard debugger circuit) - open Jumper J11
  • Via JLink with JTAG connector - short Jumper J11

• Connector:

  • Inverter board connector
  • USB connector for E2 OB
  • SCI connector for Renesas Motor Workbench communication
  • Through hole for CAN communication
  • Through hole for SPI communication
  • PMOD connectors

• User LEDs and buttons:

  • Four User LEDs
  • Power LED indicating availability of regulated power
  • One Reset button

Hardware

Detailed hardware features can be found at:

• RX26T MCU: RX26T Group User's Manual Hardware_

• MCB-RX26T Type B: MCB-RX26T Type B - User's Manual_

Note: The CPU used in the RX26T is based on the RXv3 core. However, the current version of the Zephyr kernel only supports the RXv1 core. Since the RXv3 core is backward-compatible with RXv1, it works with this version. But the following limitations apply:

• FPU context saving is not supported. Do not use the FPU.
• Register bank save function is not supported. Do not use instructions for register bank save function.
• Accumulator register saving is not supported. Do not use DSP instructions or any libraries that include DSP instructions.

Supported Features

.. zephyr:board-supported-hw::

Programming and Debugging

.. zephyr:board-supported-runners::

Applications for the mcb_rx26t board can be built, flashed, and debugged using standard Zephyr workflows. Refer to :ref:build_an_application and :ref:application_run for more details.

Flashing

Program can be flashed to MCB-RX26T via e2lite E2OB (Onboard debugger circuit).

To flash the program to board

1. Connect from board's debug connector port to host PC using USB connector for E2 OB.

2. Execute west command

.. code-block:: console

  west flash

Debugging

You can use Renesas Debug extension_ on Visual Studio code for a visual debug interface. The configuration for launch.json is as below.

.. code-block:: json

{ "version": "0.2.0", "configurations": [ { "type": "renesas-hardware", "request": "launch", "name": "Renesas GDB Hardware Debugging", "target": { "deviceFamily": "RX", "device": "R5F526TF", "debuggerType": "E2LITE", "serverParameters": [ "-uUseFine=", "1", "-w=", "1", ], } } ] }

References

• MCB-RX26T Type B Website_
• RX26T MCU group Website_

.. _MCB-RX26T Type B Website: https://www.renesas.com/en/design-resources/boards-kits/mcb-rx26t-type-b

.. _RX26T MCU group Website: https://www.renesas.com/en/products/microcontrollers-microprocessors/rx-32-bit-performance-efficiency-mcus/rx26t-32-bit-microcontroller-optimized-dual-motor-and-pfc-control

.. _MCB-RX26T Type B - User's Manual: https://www.renesas.com/en/document/mat/mcb-rx26t-type-b-users-manual

.. _RX26T Group User's Manual Hardware: https://www.renesas.com/en/document/mah/rx26t-group-users-manual-hardware

.. _Renesas Debug extension: https://marketplace.visualstudio.com/items?itemName=RenesasElectronicsCorporation.renesas-debug