ON Semiconductor RSL10-SENSE-GEVK User manual

©Semiconductor Components Industries, LLC, 2019
September, 2019 −Rev. 2
1Publication Order Number:
EVBUM2614/D
EVBUM2614
RSL10-SENSE-GEVK (and
RSL10-SENSE-DB-GEVK)
UserGuide
Introduction
The RSL10−SENSE−GEVK (and
RSL10−SENSE−DB−GEVK) is a comprehensive,
compact, node−to−cloud IoT sensor platform that allows
development of various Bluetooth Low Energy based use
cases. Along with the hardware and software, the
RSL10−SENSE−GEVK includes a mobile app to interact
with sensors and actuators. The board features RSL10,
Industry’s lowest power Bluetooth®5 SoC and several
sensors from ON Semiconductor and Bosch. By combining
motion, environmental, ambient light sensing with the
ultra−low power of the Bluetooth 5 Certified RSL10 and
will enable customers to realize a new class of battery
powered static, mobile and wearable smart sensors targeting
consumer and industrial applications in the IoT.
The overall deep sleep consumption of 20 mA results in a
battery life of over 1 year. For further increase in battery life,
software configuration wizard allows flexible timing setup
as discussed in the following sections.
Variants
There are two SKUs of the RSL10 Sensor kit. Both
variants are pre−loaded with an ultra−low power firmware
and include a 3 V CR2032 coin cell and a flexible NFC
antenna.
Figure 1.
RSL10−SENSE−GEVK: Firmware can be flashed via
10−pin needle adapter (e.g. TC2050 from Tag−Connect)
(not included). The 10−pin header for debugger is not
populated on the board.
RSL10−SENSE−DB−GEVK: The “debug” (−DB) version
of the board also includes a low cost Segger debugger
J−Link LITE CortexM and a USB cable. Users can directly
debug/communicate/flash the firmware over the
populated−pin header.
Figure 2.
Scope
The board starts functioning as soon as the coin cell is in
place. This document covers the setup, software
architecture, documentation and provides instructions on
downloading firmware to the board. The details regarding
the mobile app and cloud connectivity are not covered in this
document.
Default Configuration
In addition to the RSL10 SiP (System−in−Package), the
following sensors are present on the board.
•NOA1305, ambient Light sensor
•N24RF64, NFC EEPROM
•BME680, environmental sensor (temperature, humidity,
pressure, air quality)
•BHI160 + BMM150, 3−axis accelerometer, gyroscope,
magnetometer. Together returnabsolute orientation
supported in software
•INMP522 −> ultra−low power microphone for audio
applications
•User can insert NFC flexible antenna into dedicated
connector and bend underneath the battery holder for
custom packaging / cases.
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Figure 3.
Figure 4.
Both kits are shipped with the ultra−low power firmware
pre−loaded into the boards.
Powering the Board
To power RSL10−SENSE−GEVK, one has to insert
CR2032 (3 V) battery into battery holder located on the
bottom side of the board.
Figure 5.

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SOFTWARE
The RSL10−SENSE−GEVK boards are, by default,
configured with the ultra−low power firmware. For users
that want to download different firmware versions, this
section details the involved steps.
Prerequisities
1. Install 64−bit version of Java from
https://www.java.com/en/download/
2. Install J−Link Version 6.32i or later from
https://www.segger.com/downloads/jlink (select
J−Link software and documentation pack)
3. Download and install
“ON Semiconductor IDE Installer” from
https://www.onsemi.com/PowerSolutions/product.
do?id=RSL10
a.) Download the “RSL10 SDK Getting Started Guide”
and RSL10 CMSIS pack under “RSL10 Software Package”
from the above site. All of these are highlighted in the
picture below. Save the CMSIS pack in a folder, for
example, C:\cmsis_packs
Figure 6.
4. Download the B−ID CMSIS pack from
https://www.onsemi.com/B−IDK and save it in the
same folder as the RSL10 CMSIS pack
(see 3.a above)
5. CMSIS pack at item 4. is dependent on ARM
CMSIS pack as well. Please install ARM CMSIS
pack 5.5.1 or higher after download from:
https://github.com/ARM−software/CMSIS_5/relea
ses
6. CMSIS pack at item 4. is also dependent on ARM
CMSIS – FreeRTOS version 10.2.0 or higher for
users exposed to design the code under FreeRTOS
with RSL10:
https://github.com/ARM−software/CMSIS−FreeR
TOS/releases
The next section provides details on importing the
downloaded CMSIS packs into the SDK.
Importing CMSIS Packages
1. Launch the RSL10 ON Semiconductor IDE
NOTE: Please import RSL10 CMSIS pack first as the
B−IDK CMSIS pack (step 4 in the Prerequisites
section) depends on the RSL10 CMSIS pack
(step 3.a) in the Prerequisites section)
2. Refer to Chapter 3 of RSL10 SDK Getting Started
Guide (step 3.a) for step−by−step instructions on
importing the CMSIS packs.
3. Once all packs are successfully imported, they can
be viewed in the CMSIS pack manager perspective
as shown below (Figure 7)
Figure 7.

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Compiling and Flashing of Ultra Low Power Firmware
4. Examples related to RSL10−SENSE−GEVK are
highlighted in brackets. Choose the example
Custom Service Firmware with Deep Sleep
(RSL10−SENSE−GEVK)
Figure 8.
5. Right click and copy the project into workspace
Figure 9.
NOTE: Once the example is copied, it can be viewed
under Project Explorer. All source files
including main are located in the src folder.
Figure 10.

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6. Now user has to build the project as this creates
binaries to be flashed to RSL10−SENSE−GEVK.
For the sensor board, there are two options:
a.) 1 Debug
b.) 2 Release – go to hammer icon inside IDE and
click Release. Project is automatically build
Debug mode enables user to debug application over serial
terminal connected to GPIO pin on expansion connector. It’s
the option how to fine tune the sleep mode code.
RSL10−SENSE−GEVK natively doesn’t support serial
communication, only RTT over JTAG.
Figure 11.
NOTE: If the binaries are not seen, press F5 (refresh)
Alternatively you can build the project: right click on
project under Project Explorer −> Build Configurations −>
Set Active −> 2 Release
Figure 12.

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7. Once the build is done, the code is ready to be
flashed to the RSL10−SENSE−GEVK.
a.) Insert the battery into the board. Mandatory
step as it creates the voltage reference for SWD
logic signals.
b.) Connect the low cost Debugger
(RSL10−SENSE−DB−GEVK version) / 10−pin
needle adapter with J−LINK
(RSL10−SENSE−GEVK version)
Figure 13.
8. Select the project (sense_ics_firmware_sleep), and
go to debug configurations as shown below.
Figure 14.
a.) Double click GDB Segger J−Link Debugging to create
the debug configuration for the selected example.
Figure 15.
NOTE: The debug configuration for the selected example is automatically saved and there’s no need to re−create it.
Make sure you have the Release version of binary (.elf). Click on Search Project and Qualifier returns Release in
the path. For debugging purposes you can build and switch Debug version as discussed in step 12 a/b.

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Figure 16.
b.) On the Debugger tab, set RSL10 as the device name.
Click Debug.
Figure 17.
9. For application debugging, confirm perspective
switch by clicking Yes.
Figure 18.

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10. The debug session is now launched. Click Resume
(F8) to start the target CPU. Green LED briefly
flashes. By default, in Release version is no
Logging option and terminal doesn’t return useful
data. By terminating the session, user closes
connection with DBG server.
Figure 19.
Figure 20.
11. Disconnect debugger, download and open the
mobile app available under store (Android and
iOS). App name is RSL10 Sense and Control
( www.onsemi.com/b−idk )

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IMPORTANT NOTE:
When the board is flashed, Green LED shortly blinks.
Board starts BLE advertising only and is visible on the
mobile app. When connection with mobile app is not made
for next 60s (by default), blue LED blinks and
RSL10−SENSE−GEVK goes into deep sleep mode. You can
resume operation by holding button PB1 for >1s. Green
LED blinks and process repeats. See below the state
diagram.
Figure 21.
Figure 22.
12. User is exposed to set various parameters that have
impact on battery longevity. Three main
parameters can be configured in CMSIS:
a.) BLE Advertising Interval (Default 1000 ms)
b.) Advertising stop Timeout (Default 60 s)
c.) Wake−up Button Check Interval (Default
1500 ms)
To get into the CMSIS Configuration Wizard, right click
on RTE_app_config.h and open CMSIS Configuration
Wizard. Change parameters, save the project and build it
starting from step 12.
Figure 23.

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Figure 24.
Mobile App Usage
13. Within the Advertising Stop Timeout interval,
board is visible on the app screen.
RSL10−SENSE−GEVK is advertising only over
BLE. When multiple boards (sensor nodes) are
present, each has unique MAC address and user
selects the desired one –> HB_BLE_Terminal.
Figure 25.
14. When the appropriate board is selected, one can
choose what sensor data to observe. Below are
depicted all supported sensors and quantities
taken. More simultaneous sensors in place equals
more power required.
RSL10−SENSE−GEVK supports also cloud
connectivity via the same mobile app that
functions as a gateway.
NOTE: Air quality is not supported in this low power
mode example due to heating element and
consequent need for higher power consumption.
However it’s available under BME680 + BSEC
example or Custom Service Firmware in
CMSIS.