Rohm BP35C5 User manual

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© 2017 ROHM Co., Ltd.
No. 60AP001E Rev.001
2017.4
© 2020 ROHM Co., Ltd.
No. 63UG033E Rev.002
2020.11
User’s Guide
Wi-SUN Module FAN1.0 compliant
BP35C5 Startup Manual
Version 1.0.1
Overview
This instruction manual describes the procedures on how to use each evaluation board of Wi-SUN Module BP35C5,
and how to check an operation using a serial communication software (Tera Term).
BP35C5-T01

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1. Table of Contents
2. Downloading related documents and software ..........................................................................................3
3. What can you do with BP35C5 ................................................................................................................4
3.1. Mesh Networking ..........................................................................................................................4
3.2. Serial Network..............................................................................................................................5
3.3. Star Network................................................................................................................................5
3.4. Tree Network................................................................................................................................6
4. Setup of hardware and software..............................................................................................................7
4.1. STEP1: Preparing the hardware and software...................................................................................7
4.1.1. Regarding the hardware..............................................................................................................7
4.1.2. Regarding the software.............................................................................................................10
4.2. STEP2: Connecting the hardware to PC ......................................................................................... 11
4.3. STEP3: Setting up the serial communication software .....................................................................12
4.3.1. Setup of terminal software ........................................................................................................12
5. Verifying the communication.................................................................................................................14
5.1. Preparation ................................................................................................................................ 14
5.2. Verification of communication....................................................................................................... 15
6. Updating the firmware ......................................................................................................................... 17
6.1. Use FlashWriterForSubG ..............................................................................................................17
6.2. Use Tera Term ............................................................................................................................20
7. Appendix ............................................................................................................................................ 21
7.1. Connecting via D-Sub connector ...................................................................................................21
7.2. Connecting UART directly from through-hole..................................................................................22
8. Revision History................................................................................................................................... 23

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2. Downloading related documents and software
The documents related to this manual are listed at the beginning of each chapter. Refer to them if necessary.
The documents for hardware are available for download on ROHM Wi-SUN support page.
ROHM Wi-SUN support page:
https://www.rohm.co.jp/products/wireless-communication/specified-low-power-radio-modules/bp35c5-prod
uct/documents
The documents for software and firmware are available for download on Wi-SUN FAN support page of Nissin
Systems Co., Ltd.
Nissin Systems homepage：https://e-support.co-nss.co.jp/
The terminal software Tera Term is used to check the operation, and it can be downloaded from the following
URL.
Tera Term download：https://osdn.net/projects/ttssh2/
USB-UART conversion chip of FTDI Ltd. is used in evaluation boards. Download the FTDI driver from the URL
below if necessary because Windows may not be able to automatically recognize it, and the driver may need to
be installed.
FTDI Ltd. download：https://www.ftdichip.com/FTDrivers.htm

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3. What can you do with BP35C5
BP35C5 enables you to create a network such as the following and to communicate with UDP and/or TCP.
Name
Features
Mesh networking
A networking in which each station is connected in a mesh.
Even if a station fails (network down or radio interference), it is possible to build
another route to communicate.
Serial network
A networking in which all stations are connected in a straight line.
Long-distance communication is possible by making the most of hopping.
Star network
A networking in which all child stations are directly connected to one parent
station.
Communication at high speed in a narrow range is possible.
Tree network
A networking in which each station branches like branch of a tree.
It is a form in which the vertical relationship between stations is clear and easy
to control.
3.1. Mesh Networking
This type of networking makes the most of FAN characteristics.
It covers a wide range because of hopping, and automatic routing can be used to avoid failures.
Border Router
Router
Leaf
Legend

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3.2. Serial Network
This type of networking that can realize communication distance by hopping, and suitable for infrastructure
(street lights, etc.) installed in a straight line.
3.3. Star Network
This type of networking is applicable for communicating at high speed in a narrow range because it does not
use hopping.
Border Router
Router
Leaf
Legend
Border Router
Router
Leaf
Legend

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3.4. Tree Network
This is a type of networking in which each station branches off like branch of a tree. With a slight change in
settings, it can also be a mesh networking.
Border Router
Router
Leaf
Legend

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4. Setup of hardware and software
This chapter explains the setup of hardware and software in order to check the operation of BP35C5.
The flow of setup is as follows.
STEP 1: Preparing the hardware and software
STEP 2: Connecting the hardware to PC
STEP 3: Setting up the serial communication software
4.1. STEP1: Preparing the hardware and software
The hardware and software to be used will be described.
4.1.1. Regarding the hardware
*Reference info: ROHM is actually using the cable below as USB cable.
・ELECOM Co. Ltd. Product “U2C-M05BK” (mini-B type)
The following are related documents for hardware. Refer to it as needed.
Download URL：
https://www.rohm.co.jp/products/wireless-communication/specified-low-power-radio-modules/bp35c5-pr
oduct/documents
Filename
Details
BP35C5 Datasheet
(bp35c5_datasheet_v***e.pdf)
This document describes the hardware specifications for
BP35C5.
BP35C5-T01 Evaluation Board
(bp35c5-t01_evaluationboard_v***e.pdf)
This document describes the hardware specifications for
BP35C5-T01.
BP359C Evaluation Board
(bp359c_evaluationboard_v***e.pdf)
This document describes the hardware specifications of
UART interface evaluation board (BP359C).
List of external antenna
(bp35c5_antennalist_v***e.pdf)
This is a list of external antennas that have been certified
for radio law compatible with BP35C5.
*①and ②can be purchased from
ROHM, distributors, or online.
*③, ④and ⑤must be purchased by
the customer.
①
②
③
⑤
④
No.
Name
①
②
③
④
BP35C5-T01
BP359C
USB cable (Mini-B)
Antenna
⑤
Windows PC

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Adapter board BP35C5-T01
In this chapter, BP35C5 adapter board (BP35C5-T01) is used in order to use BP35C5 on the evaluation
board (BP359C).
This is an evaluation board that can be connected to the BP359C with built-in BP35C5.
The pin configuration of BP35C5-T01 is shown below.
Refer to BP35C5 Datasheet for the information of each pin of BP35C5.
CN1
CN2
CN5
CN4
Pin No.
Pin Name
Pin No.
Pin Name
Pin No.
Pin Name
Pin No.
Pin Name
1
GND
1
GND
1
GND
1
VDD
2
GPIOB1/FTM
2
RTS
2
SPI_MISO
2
SWD
3
ADC2
3
CTS
3
SPI_SSN
3
GND
4
VDD
4
RXD
4
GPIOC0/RXD2
4
SWCK
5
VDD
5
TXD
5
GPIOB7/TXD2
5
GND
6
NC
6
GPIOA1/SCL
6
SPI_SCK
6
NC
7
NC
7
RESETN
7
RESETN
7
NC
8
MODE0
8
GPIOA0/SDA
8
SPI_MOSI
8
NC
9
GND
9
GND
9
GND
9
GND
10
RESETN
front
SMA connector (external antenna)
ANT1
ANT2
BP35C5
CN1
CN2
CN5
CN4
back

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Evaluation board BP359C
The BP359C evaluation board is a board to evaluate various radio modules.
Refer to the manual of BP359C evaluation board for internal schematics and pin configuration.
The names of each part are listed below.
For various jumper pins, the role and settings when using USB connector (CN3) are described below. The
settings for using the D-Sub connector are described in “7.1. Connecting via D-Sub connector”. Take note
that JP5, JP6, and JP7 are not used in this manual.
USB connector
(mini-B) CN3
Connector CN1 for
adapter board connection
Connector CN2 for
adapter board connection
D-Sub 9pin
Connector CN4
DC jack
DC5V CN5
Power switch
SW1
DIP switch SW5 for
mode switching
WPS button
SW3 (unused)
Initialization button
SW4 (unused)
PRST button
SW2
Connection ports switch
JP1: pin (through-hole)
JP2: RS232C
JP3: USB
JP1
JP2
JP3
Flow control switch
JP6 (unused)
JP7 (unused)
JP6
JP7
JP8
Power supply switch
(USB/AC adapter)
JP4
VCC pin-LDO connection
⇒must be shorted, use to
supply power
JP5
LED2-GPIO2
connection
(unused)

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Set the DIP switch (SW5) to low when checking the normal operation as follows.
4.1.2. Regarding the software
No.
Filename
Details
①
Terminal Software (Tera Term)
This is a software that can serially communicate and send
binary files. Tera Term, a Windows free software is used in
this manual.
②
Firmware
This is a BP35C5 Wi-SUN FAN1.0 compliant firmware,
which is provided by Nissin Systems Co., Ltd.
③
EW-WSN-FAN Command
Application Users Manual
(EW-WSN-FAN UsersManual.pdf)
This manual describes the command specifications for
controlling BP35C5, which is provided by Nissin Systems
Co., Ltd.
④
Sample Script Manual
(bp35c5_samplescript_v***j.pdf)
This is the instruction manual of BP35C5 Sample Script.
Tera Term in No.①can be downloaded from the site below.
URL: https://osdn.net/projects/ttssh2/
High
Low
L
L
L
1
2
3

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4.2. STEP2: Connecting the hardware to PC
Insert BP35C5-T01 into BP359C from the top as shown in the images below.
After connecting the adapter board to BP359C, connect it to PC.
When connecting to PC, keep the power switch (SW1) on BP359C off. The evaluation board will be
automatically recognized by Windows after connecting.*
*In BP359C, FTDI is used to convert USB to UART. Depending on PC environment, installation of a driver may
be necessary. Therefore, download the driver from the following URL if necessary.
https://www.ftdichip.com/FTDrivers.htm
CN1
CN2
CN5 is not
inserted into
socket, so it is
visible.
Assembled
form
Insert pins (CN1, CN2)
of BP35C5-T01 into
socket holes of
BP359C. (CN5 is not
used)
SW1
OFF
ON

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4.3. STEP3: Setting up the serial communication software
In this manual, the following software is used.
Program Name
Details
Terminal software (Tera Term)
This is a free software that can serially communicate on Windows.
Tera Term is available for download from:
https://osdn.net/projects/ttssh2/
4.3.1. Setup of terminal software
In this manual, a Windows free software Tera Term is used for serial communication.
First, turn on the power supply in BP359C power switch (SW1). The LED near SW1 will turn green once the
power switch is on.
After installing Tera Term, follow these steps:
No.
Screen
Operating details
1
Tera Term starts up.
2
Select “File” → “New connection...”.
Check "Serial" in the displayed window,
select COM Port (USB Serial Port) to use,
and then click OK.
The COM Port is the number assigned when
USB is inserted in PC. If unknown, follow
these steps:
SW1
OFF
ON

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3
(In case COM Port is unknown)
The left screen opens in "Device Manager"
(search in Windows Start Menu).
Refer to the COM Port that appears in the
Port (COM and LPT) field.
4
Select “Setup” →“Serial port...”.
Select "115200” from the baud rate
drop-down in the displayed window.
Set the data to "8bit", parity to "none", stop
bit to "1bit", and flow control to "none".
Then, click OK after selecting.
5
Select “Settup”→“Terminal...”.
Under the Newline Code in the displayed
window, set both receiving and sending to
"CR", and uncheck the Local echo. Then,
click OK after selecting.
That's all to prepare the Tera Term.

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5. Verifying the communication
In this chapter, the networking with 2 parts namely; Border and Router will be configured, and communication
will be verified using ping.
5.1. Preparation
Prepare two evaluation sets (with antenna) of BP35C5 with initial settings.
If the setting is not in the initial state, use "clrst" command to reset the setting to its initial state as follows.
> clrst ←Reset back to its initial state
clrst parameter is cleared and reset delay 0sec
The initial BP35C5 state starts as Router. However, it will require a Border unit to configure the network.
Thus, set one unit to be a Border.
BR1> atstart 1 ←Set to Border
atstart 1(BORDER)
BR1> save ←Save the settings
save parameter is saved
BR1> reset ←Reset to reflect the settings
reset delay 0sec
A few moments after setting, the network will be connected as shown below, and an IP address will be
automatically assigned to the Router.
ICMPv6 Echo Request
ICMPv6 Echo Reply
Border (BR1)
Router (R2)
Border Router
Router
Leaf
Legend
Border Router
Router

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Use the "fstat" command to check if the Router is connected to the Border. If "5(OPERATIONAL)" is displayed,
then the connection is successful.
R2> fstat
fstat 5(OPERATIONAL) ←5(OPERATIONAL) means connected
5.2. Verification of communication
Next, run ping from the Border to the Router to verify the communication.
Check the IP address of the Router by sending the "leased" command in the Border.
BR1> leased ←Show the list of leased IP address
leased <2001:db8::ce>,<001d129f35c502f9>
In this example, "2001:db8::ce" is assigned to the Router.
Run ping from the Border.
If the Router responds, it should look like the example below.
BR1> ping 2001:db8::ce
ping <2001:db8::ce> (seq=1 sz=32bytes time=0.070sec) 1/1
1 transmitted, 1 received, 0.0% loss (min=0.070/max=0.070/avr=0.070 sec)
Also, the following is shown in the Router.
inf 44,32,1,20 { icmpEch: rcvd echo request (seq=1 len=32) }
With the above, the communication is verified.
With the ping result or if "100% loss" is outputted, it means that the communication failed.
If this is the case, check the following situations:
Is the destination IP address correct? →Check the entered IP address whether correct or not.
Is the Router connected? →It may reconnected after a while.
Is the antenna installed? →It may be not connected due to weak radio waves.
Are the settings correct? →Check the settings for each node used in this chapter on the following page.

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Border (BR1) parameter settings
BR1> param
mac address : <001d129f35c50188>(*)
pan id : <NONE>
profile mode : 1(FAN)
auth mode : 1
UART hwflow : 0
IPv6 address : ULA<NONE/64>,GBL<NONE/64>
RPL DODAG ID : <NONE>
RPL instance ID : 0
UDP listen port : 3610 20171
DHCPv6 range : 1000
mac-filter : default( allow )
joiner-filter : default( allow )
CCA threshold : -83
chrate : 150Kbps
channel : low(33)<->high(59),num=14
network name : Wi-SUN-FAN
TCP options : auto_connect send_port=3610
: listen_port=3610
: idle_minutes=3 rto_sec=10 maxrtx=3 syn_maxrtx=5 mss=536
UDP options : send_port=3610 send_port_text=20171
: listen_port=3610
: listen_port_text=20171
RMTCTL options :
auto start role : 1(BORDER)
Router (R2) parameter settings
R2> param
mac address : <001d129f35c502f9>(*)
pan id : <cafe>(*)
profile mode : 1(FAN)(*)
auth mode : 1(*)
UART hwflow : 0(*)
IPv6 address : ULA<NONE/64>,GBL<2001:db8::ce/128>(*)
RPL DODAG ID : <NONE>(*)
RPL instance ID : 0(*)
UDP listen port : (*)
DHCPv6 range : 1000(*)
DHCPv6 fixed IP : (*)
CCA threshold : -83(*)
chrate : 150Kbps(*)
channel : low(33)<->high(59),num=14(*)
network name : Wi-SUN-FAN(*)
TCP options : send_port=3610(*)
: listen_port=3610(*)
: idle_minutes=3 rto_sec=10 maxrtx=3 syn_maxrtx=5 mss=536(*)
UDP options : send_port=3610 send_port_text=20171(*)
: listen_port=3610(*)
: listen_port_text=20171(*)
RMTCTL options : send_done (*)
auto start role : 2(ROUTER)(*)

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6. Updating the firmware
There are two ways to update the firmware as follows.
1. Use FlashWriterForSubG
2. Use Tera Term
Each method is explained below.
6.1. Use FlashWriterForSubG
1. Set the DIP-SW(SW5) of BP359C as follows and reset.
2. Start FlashWriterForSubG.
High
Low
L
L
H
1
2
3

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3. Select [File]-[Connect ...] from the menu, select the appropriate port, and press the [Connect] button.
4. Select [File]-[Target ...] from the menu, select ML7436N_1BK.trg, and press the [Open] button.
5. Select the Program tab.

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6. Press the [...] button to the right of the "Program data File Name" to select the "rhohm-bp35c5.hex" file
and press the [Open] button.
7. Enable Programming with Verification.

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8. Press the [Program] button to erase, write and verify.
9. Select [File]-[Disconnect] from the menu to disconnect the port.
10. Set the DIP-SW(SW5) of BP359C as follows and reset.
6.2. Use Tera Term
Use the macros of Tera Term to update the firmware.
For specific method on how to update, refer to README-BIN.TXT, which is included in the package provided by
Nissin Systems Co., Ltd.
Note:
When updating the firmware, all the parameters set and saved will be disabled. Therefore, set and
save the parameters again after updating. If there are concerns or trouble with the settings when
they're disabled, make sure to record all settings before updating.
High
Low
L
L
L
1
2
3