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Welcome to the Arduino wiki!

• Following contents include English only.
  • 日本語ページはこちら: ホーム
• Information on Arduino systems that run on a variety of RL78 family boards is collected here.
• Arduino system comprises “Arduino board” hardware and “Arduino IDE” software.
  • Reference: https://www.arduino.cc/en/Guide/Introduction

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Topics

• Sep 30, 2024 RL78/G23-128p Arduino library v.1.1.0 has been released.
• Sep 30, 2024 RL78/G24 Arduino library v.1.1.0 has been released.
• Sep 30, 2024 RL78/G16 Arduino library v.1.1.0 has been released.
• Sep 30, 2024 Added the following notes.
  • Some pins cannot be used as transmit pins in SoftwareSerial.
• Aug 8, 2024 RL78/G22 Arduino library v.2.3.0 has been released.
• Aug 8, 2024 Added the following notes.
  • Some pins cannot be used as transmit pins in SoftwareSerial.
  • Calling pinMode() does not allow for the digital output setting.
  • Calling digitalRead() does not read the input value.
  • SCL and SDA cannot be used in pinMode() and digitalRead().
• Jul 11, 2024 RL78/G23 Arduino library v.2.3.2 has been released.
• Jul 3, 2024 Added the following notes.
  • LED doesn't blink when using the sample sketch "blink".
  • Not change the input settings when analogRead() is called.
  • PWM waveform is not output when analogWrite() is called.
• June 28, 2024 RL78/G23-128p Arduino library v.1.0.0 has been released.
• May 31, 2024 RL78/G15 Arduino library v.1.2.0 has been released.
• Apr 22, 2024 Sample sketch using RL78/G23-64p FPB and OLED has been released.
• Click here for past history

List of Supported Boards

• The table below shows the Fast Prototyping Boards that are compatible with the Arduino IDE.
• Depending on the Fast Prototyping Board, it may be necessary to set "Additional boards manager URL".
• Please refer to the quick start guide for each board for how to set the "Additional boards manager URL".

Fast Prototyping Board	Supproted OS	Additional boards manager URL
RL78/G24	Windows 10 or later Ubuntu 20.04 or later	RL78/G24 boards manager URL
RL78/G23-128p	Windows 10 or later Ubuntu 20.04 or later	RL78/G23-128p boards manager URL
RL78/G23-64p	Windows 10 or later Ubuntu 20.04 or later	RL78/G23-64p boards manager URL
RL78/G22	Windows 10 or later Ubuntu 20.04 or later	RL78/G22 boards manager URL
RL78/G16	Windows 10 or later Ubuntu 20.04 or later	RL78/G16 boards manager URL
RL78/G15	Windows 10 or later	RL78/G15 boards manager URL

Note1: Please set "Additional Board Manager URLs" when using the latest version of the library on the RL78/G23-64p and RL78/G22 Fast Prototyping Board.
Note2: Please use Arduino IDE 1.8.19 when using the RL78/G15 Fast Prototyping Board.

Quick Start Guide

• A Quick Start Guide has been prepared to enable users to start trying out an Arduino system running on the supported board right away.
• Using the Quick Start Guide for reference, you can start coding for the Arduino environment and run a sample program that flashes LEDs at fixed intervals right away after obtaining the board.

Sample sketches

• Renesas provides sample sketches of each FPB.
• For sample sketches, we publish sketches with specific sensors.

Tutorial Video

• Renesas web site
• YouTube

API List

• The Arduino library includes code for controlling the IIC bus, A/D converter functionality, etc., and using the Arduino IDE you can easily add code referencing the APIs in the[API List](API List)in order to make use of the MCU’s peripheral functions.
• For example, it is a simple matter to implement extensions such as adding a sensor module to the IIC bus of the RL78/G23-64p Fast Prototyping Board in order to read sensor data.
• In the Arduino source code Arduino pin numbers are used to specify which pins on the board are used.
  • The available Arduino pin numbers differ depending on the board, so refer to “Arduino pin list” under the Supported Boards item when creating Arduino sketches.
• The API List will be expanded further moving forward.

Detailed Internal Debugging of the Arduino Library

• You can use e2 studio to carry out detailed internal debugging of the Arduino library.
  • Refer to the following for instructions on how to proceed.
    • [Under construction.]

Knowledge Base(FAQ)

• Knowledge Base(FAQ)

Notes

• Please refer to this page for Notes when trying out the RL78 Arduino environment.