Bluetooth® Low Energy is a low energy mode of Bluetooth wireless technology that has an effect on power consumption especially for battery-operated applications. The attractive point of Bluetooth Low Energy lies in that it can operate while being connected to applications for smartphones and tablets. Renesas Bluetooth Low Energy solutions provide smart connections with the lowest level of power consumption in the industry and can be used in applications such as healthcare and fitness devices, home electric appliances and RFID tags that use beacons to connect them with smartphones at low power consumption without wires.
Renesas' RL78/G1D low power 16-bit microcontrollers (MCUs) support Bluetooth Low Energy and enable reliable connections with current consumption levels among the lowest in the industry. The chip incorporates a balun element and a filter. It is only required to connect the chip to an antenna. Reduction in the number of external components leads to reduction in labor required for design and quality control. It also supports the long-term product supply program.RL78/G1D User's Manual: Hardware (PDF | English, 日本語)
The RL78/G1D module contains the RL78/G1D 16-bit MCU, a 32MHz crystal resonator for the RF chip and an antenna, all in a compact 8.95mm x 13.35mm x 1.7mm module. The module inherits the functional pins of the RL78/G1D, so not only can it be used for modem configuration, but the strengths of the microcontroller can also be leverage for embedded configuration. This Bluetooth Low Energy module offers a good balance between size and the number of functional pins.RL78/G1D Module (RY7011) User's Manual: Hardware (PDF | English, 日本語) RL78/G1D Module Firmware User's Manual - Sample Code (ZIP | English, 日本語)
To purchase the RL78/G1D IC or module, contact your local Renesas sales office or distributor.
The RL78/G1D evaluation board can be used to evaluate and develop applications for Renesas' RL78/G1D Bluetooth Low Energy solution. The board consists of an RL78/G1D module which can be plugged on to the development board and connected to an IDE for development and debugging. The development board can also work with a PC GUI tool for application level evaluation.
This evaluation board is best suited for the following purposes.
- For evaluation of the Renesas' RL78/G1D microcontroller device
- For operation evaluation of Bluetooth Low Energy
- For use as a principle prototype
To purchase an RL78/G1D evaluation board (Orderable Part Number: RTK0EN0001D01001BZ), contact your local Renesas sales office or distributor.
Build IoT Devices Such as Sensors with the RL78/G1D Module and a Host MCU
Each board can be purchased from distributors.
Bluetooth Low Energy Protocol Stack for RL78 Family
The Bluetooth Low Energy protocol stack is software required to operate the RL78/G1D IC. It supports modem configuration and embedded configuration and can offer various profiles created by the Bluetooth Special Interest Group (SIG). It can also adapt to custom profiles created by customers. Renesas offers Bluetooth Low Energy software solutions corresponding to a wide variety of application development.Bluetooth low energy Protocol Stack Introduction (PDF | English, 日本語)
Even if you are not familiar with Bluetooth Low Energy, you can easily conduct Bluetooth Low Energy communication using GUI tools without writing a program. You can confirm the API execution procedure and the setting values for various parameters while actually conducting communication activities. Additionally, you can also develop a program smoothly while referring to the results (logs) of the operation check.
iOS/Android GATTBrowser Application
The GATTBrowser smartphone application can be downloaded from the Apple App Store and Google Play.
The GATTBrowser app is used to check Bluetooth Low Energy behavior. It can scan LE devices which are advertising in the vicinity and can perform GATT-based communication with the connected LE device. You can easily check the sample application behavior. GATTBrowser assists in the development of products that implement the Renesas RL78/G1D device and module.
iOS GATTBrowser Application
Android GATTBrowser Application
RenesasBLE iOS/Android Application
The "RenesasBLE" iOS/Android application created by Renesas can be downloaded from the Apple App Store and Google Play. RenesasBLE operates in conjunction with sample programs so you can immediately experience Bluetooth Low Energy. You can download all the sample programs for Android, iOS and RL78/G1D and immediately link what you experienced to development.
iOS RenesasBLE Application
Android RenesasBLE Application
Applications using Bluetooth LE technology have spread from healthcare devices and continue to expand into a wide variety of fields such as sports and fitness, smart homes, industrial equipment, and beacon applications.
Beacons are applications which continue to transmit ID/URL/vendor information for advertisement notification to smartphones and location detection through smartphones. As beacons must always continue to transmit radio waves, the most important thing is to operate them with low power consumption. Renesas offers a stack exclusively for beacons, specialized in lower power consumption.
The RL78 Quick Solutions demonstrate how RL78 low power MCUs combined with Renesas' analog and power products can create high-performance solutions for a wide variety of applications. Quick Solutions for the Industrial IoT, infrastructure, healthcare, and home and office are fully developed reference designs with a user’s manual, application details, schematic, bill-of-materials (BOM), and source code/project files that enable you to develop these solutions quickly.
Multi-Hop uses a beacon stack for the advertising and scanning. Relay equipment executes both transmission and reception for Multi-Hop frame relay via the flooding method. It's possible to communicate data via more than one appliances. You can execute broadcasting a command (e.g. lighting control) and gathering data (e.g. sensor data) by using Multi-Hop. And, you can either select or not select security for prevention of eavesdropping and falsifying.
When using Multi-hop without security, download from the following protocol stacks.
When using Multi-hop with security, contact your nearest Renesas Sales Office or Distributor.
|Point-to-Point||General Bluetooth Low Energy products||Bluetooth low energy Protocol Stack (Ver.1.21) (ZIP)
Bluetooth® Low Energy Protocol Stack (Ver.1.20) (ZIP | English, 日本語)
|Broadcast||Beacon devices (advertising packet which does not accept connection requests and scan)||RL78/G1D Beacon Stack Basic Operation Sample Program - Sample Code (ZIP)|
|Multi-Hop||Communication in the wide range via the relay with flooding method. (beacon stack application)||RL78/G1D Beacon Stack Multi-Hop Feature (without Security) - Sample Code (ZIP | English, 日本語)|
Virtual UART Application
Responding to demands for wireless serial communication and wireless communication between embedded modules, we have developed a virtual UART application that works with Bluetooth Low Energy technology. It has a simple AT command execution function to control and set Bluetooth Low Energy communication, thereby realizing virtual UART communication where characters are transmitted/received via Bluetooth Low Energy communication.