RF-Star RF-BT02 User manual

RF-BT02
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Shenzhen RF-star Technology Co., Ltd. Page 1 of 51
RF-BT02 Test Board User Guide
Version: 1.2
Shenzhen RF-star Technology Co., Ltd.
March 25th, 2021

RF-BT02
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Table of Contents
Table of Contents................................................................................................................................................................ 2
Table of Figures................................................................................................................................................................... 3
Table of Tables..................................................................................................................................................................... 4
1 Product Overview ........................................................................................................................................................... 5
1.1 Functions and Resources............................................................................................................................... 5
1.2 Adapter Modules ................................................................................................................................................ 6
1.3 Pin Description.................................................................................................................................................... 7
◆nRF52832/nRF52810 Series ............................................................................................................. 7
◆nRF52805 Series..................................................................................................................................10
◆EFR32BG22 Series .............................................................................................................................13
◆CC2540/CC2541 Series ....................................................................................................................17
◆CC2640R2F/CC2640R2L Series....................................................................................................20
◆RS02A1-A Series..................................................................................................................................24
◆RS02A1-B Series .................................................................................................................................27
1.4 Schematic Diagram of RF-BT02................................................................................................................30
2 Transparent Transmission Introduction for Use................................................................................................31
2.1 Preparation of Hardware and Software...................................................................................................31
◆EFR32BG22 Series .............................................................................................................................31
◆nRF52832/nRF52810 Series ...........................................................................................................32
◆nRF52805 Series..................................................................................................................................33
◆CC254x, CC2640R2x and RS02A1-x Series ............................................................................34
2.2 Transparent Transmission Test by APP (Android) ..............................................................................37
3. MCU Reference Code (Transparent Transmission) ......................................................................................40
3.1 Non-Flow Control Module.............................................................................................................................40
3.2 Standard Hardware Flow Control Module..............................................................................................42
4 Secondary Development ...........................................................................................................................................43
4.1 Downloads Address of Writer, DK and SDK..........................................................................................43
4.2 Pin Description during Burning...................................................................................................................44
◆nRF52832/nRF52810 and nRF52805 Series............................................................................44
◆EFR32BG22 Series .............................................................................................................................45

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◆CC254X, CC2640 and RS02A1-x Series....................................................................................46
5 Trouble Shooting...........................................................................................................................................................49
5.1 Unsatisfactory Transmission Distance ....................................................................................................49
5.2 Vulnerable Module...........................................................................................................................................49
5.3 High Bit Error Rate ..........................................................................................................................................49
6 Revision History ............................................................................................................................................................50
7 Contact Us.......................................................................................................................................................................51
Table of Figures
Figure 1. Function Area Distribution................................................................................................................... 5
Figure 2. Pin Diagram RF-BT02 (Left) and RF-BM-ND08/RF-BM-08C (Right)................................ 7
Figure 3. Pin Diagram RF-BT02 (Left) and RF-BM-ND09 (Right)........................................................10
Figure 4. Pin Diagram RF-BT02 (Left) and RF-BM-BG22A1/A2/A3 (Right) ....................................13
Figure 5. Pin Diagram RF-BT02 (Left) and RF-BM-S02/RF-BM-S02A/RF-BM-S02I (Right) ....17
Figure 6. Pin Diagram RF-BT02 (Left) and RF-BM-4044B2/RF-BM-4044B3/RF-BM-4055B1L
(Right) .................................................................................................................................................................20
Figure 7. Pin Diagram RF-BT02 (Left) and RSBRS02AA/RSBRS02AI (Right)..............................24
Figure 8. Pin Diagram RF-BT02 (Left) and RSBRS02ABR/RSBRS02ABRI (Right) ....................27

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Table of Tables
Table 1. Function Area Description..................................................................................................................... 6
Table 2. Table of Adapter Modules ..................................................................................................................... 6
Table 3. Pin Correspondence between RF-BM-ND08 and RF-BT02 ................................................... 7
Table 4. Pin Functions of RF-BM-ND08/RF-BM-ND08C ........................................................................... 8
Table 5. Pin Correspondence between RF-BM-ND09 and RF-BT02 .................................................10
Table 6. Pin Functions of RF-BM-ND09(A) ...................................................................................................11
Table 7. Pin Correspondence between RF-BM-BG22A1/A2/A3 and RF-BT02 ..............................13
Table 8. Pin Functions of RF-BM-BG22A1/A2/A3 ......................................................................................15
Table 9. Pin Correspondence between RF-BM-S02/RF-BM-S02A/RF-BM-S02I and RF-BT02
...............................................................................................................................................................................17
Table 10. Pin Functions of RF-BM-S02/RF-BM-S02A/RF-BM-S02I ...................................................18
Table 11. Pin Correspondence between RF-BM-4044B2/RF-BM-4044B3/RF-BM-4055B1L and
RF-BT02 ............................................................................................................................................................20
Table 12. Pin Functions of RF-BM-4044B2...................................................................................................21
Table 13. Pin Correspondence between RSBRS02AA/RSBRS02AI and RF-BT02 .....................24
Table 14. Pin Functions of RSBRS02AA/RSBRS02AI .............................................................................25
Table 15. Pin Correspondence between RSBRS02ABR/RSBRS02ABRI and RF-BT02............27
Table 16. Pin Functions of RSBRS02ABR/RSBRS02ABRI....................................................................28

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1 Product Overview
RF-BT02 development board is a complete set of test products formed by a serial port module and a USB to UART
baseboard for customer testing and development, which greatly reduces the difficulty of customers’ testing and
development. This user guide describes how to use the development board. For more information about our products,
please visit the official website: www.szrfstar.com.
1.1 Functions and Resources
The function area distribution is shown in Figure 1 and Table 1.
Figure 1. Function Area Distribution

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Table 1. Function Area Description
Area
Name
Function
A
Module expansion area
The adapter modules are shown in Table 2.
B
Pin output area
All pins are pulled out, which is convenient for the test.
C
USB-to-UART area
USB-to-UART function can be used as a USB to TTL tool when
there is no module.
D
3.3 V power supply area
Output voltage 3.3 V / 5 V
E
Button function area
Reset by pushing buttons
1.2 Adapter Modules
Table 2. Table of Adapter Modules
EFR32BG22Cx
nRF52832/10
nRF52805
CC2640R2F/L
CC2540/1
RS02A1-A/B
RF-BM-BG22A1
RF-BM-ND08
RF-BM-ND09
RF-BM-4044B2
RF-BM-S02
RSBRS02AA
RF-BM-BG22A2
RF-BM-ND08C
RF-BM-ND09A
RF-BM-4044B3
RF-BM-S02A
RSBRS02AI
RF-BM-BG22A3
RF-BM-4055B1L
RF-BM-S02I
RSBRS02ABR
RSBRS02ABRI

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1.3 Pin Description
◆nRF52832/nRF52810 Series
Figure 2 is the pin diagram of RF-BT02 and RF-BM-ND08/RF-BM-ND08C, Table 3 shows the pin correspondence
between the RF-BM-ND08/RF-BM-ND08C module and the development board, where A1 ~ A18 correspond to pin 2 ~
pin 19 of the module, Table 4 shows the detailed pin description of the RF-BM-ND08/RF-BM-ND08C. Please refer to the
appendix for detailed pin descriptions of other modules.
Figure 2. Pin Diagram RF-BT02 (Left) and RF-BM-ND08/RF-BM-08C (Right)
Table 3. Pin Correspondence between RF-BM-ND08 and RF-BT02
Outside Pins of
RF-BT02
Description
Inside Pins of
RF-BT02
Description
B1
GND
A1
GND. Need to short-circuit via the jumper.
B2
VCC
A2
VCC. Need to short-circuit via the jumper.
B3
GND
A3
P25
B4
GND
A4
Broadcast indicator (P17)
B5
Reset
A5
RESET (P21)

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B6
GND
A6
Wake-up IO (P13)
B7
GND
A7
P28
B8
GND
A8
P27
B9
GND
A9
P26
B10
GND
A10
P09
B11
GND
A11
P10
B12
GND
A12
RESTORE (P19)
B13
GND
A13
P20
B14
GND
A14
RTS (P05)
B15
GND
A15
Module CTS. Need to short-circuit via the jumper.
(P07)
B16
RXD (CP2102)
A16
Module TX. Need to short-circuit via the jumper. (P06)
B17
TXD (CP2102)
A17
Module RX. Need to short-circuit via the jumper. (P08)
B18
GND
A18
P03
B19
GND
B20
VCC (5 V)
B21
VCC (3.3 V)
B22
RXD (CP2102)
B23
TXD (CP2102)
B24
RESET
B25
SWD (J-Link)
B26
SWC (J-Link)
B27
VCC (3.3 V)
B28
GND
Table 4. Pin Functions of RF-BM-ND08/RF-BM-ND08C
Pin
Name
Chip Pin
I/O
Description
A1
GND
GND
-
Ground
A2
VCC
VCC
-
Power supply 1.7 V ~ 3.6 V, Recommend 3.3 V
A3
-
P25
I/O
A4
Status
indication
P17
-
Slave mode (including Beacon) connection status indicator: low
when connected, LED always on under connection.

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A5
RESET
P21
I/O
Reset pin, active low.
A6
Wake-up IO
P13
I
It can wake up the module when the module is in sleep state.
Falling edge valid.
A7
-
P28
I/O
A8
-
P27
I/O
A9
-
P26
I/O
A10
-
P09
I/O
A11
-
P10
I/O
A12
RESTORE
P19
-
Keep this pin at a low level for 3 s, all parameters are restored to
factory settings.
A13
-
P20
I/O
A14
RTS
P05
O
The module output signal (Standard hardware flow control: Require
To Send). When it is at a high level, the module serial port is busy,
and the MCU is not allowed to send data to the module serial port.
When it is at a low level, the MCU is allowed to send data to the
module serial port.
A15
CTS
P07
I
The module input signal (Standard hardware flow control: Clear To
Send). When it is at a high level, the MCU serial port is busy, and
the module will not send data to the MCU serial port. When it is at
a low level, the module will send data to the MCU serial port.
A16
TX
P06
O
Serial port TX
A17
RX
P08
I
Serial port RX
A18
-
P03
I/O

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◆nRF52805 Series
The following figure 3 is the pin diagram of RF-BT02 and RF-BM-ND09 (bottom view). Table 5 shows the pin
correspondence between the module and the development board. Table 6 shows the module detailed pin description.
Figure 3. Pin Diagram RF-BT02 (Left) and RF-BM-ND09 (Right)
Table 5. Pin Correspondence between RF-BM-ND09 and RF-BT02
Outside Pins of
RF-BT02
Description
Inside Pins of
RF-BT02
Description
B1
GND
A1
B2
VCC
A2
B3
GND
A3
B4
GND
A4
B5
Reset
A5
RESET
B6
GND
A6
P18
B7
GND
A7
B8
GND
A8

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B9
GND
A9
B10
GND
A10
Status indicator (P16)
B11
GND
A11
Status control (P12)
B12
GND
A12
RESTORE (P05)
B13
GND
A13
P04
B14
GND
A14
Module CTS (P14)
B15
GND
A15
Module BRTS (P00)
B16
RXD (CP2102)
A16
Module TX. Need to short-circuit via the jumper
(PC01).
B17
TXD (CP2102)
A17
Module RX. Need to short-circuit via the jumper
(PC20)
B18
GND
A18
GND
B19
GND
B20
VCC (5 V)
B21
VCC (3.3 V)
B22
RXD (CP2102)
B23
TXD (CP2102)
B24
RESET
B25
SWD (J-Link)
B26
SWC (J-Link)
B27
VCC (3.3 V)
B28
GND
Table 6. Pin Functions of RF-BM-ND09(A)
Pin
Name
Chip Pin
Pin Type
Description
1
GND
GND
GND
Ground
2
GND
GND
GND
Ground
3
P20
P0_20
RX
Serial port RX
4
P01
P0_01/XL2
TX
Serial port TX
5
P00
P0_00/XL1
RTS
Module output signal (Standard hardware flow control:
Require To Send). When it is at a high level, the module

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serial port is busy, and the MCU is not allowed to send data
to the module serial port. When it is at a low level, the MCU
is allowed to send data to the module serial port.
6
VCC
VDD
Positive
input
Power supply 1.7 V ~ 3.6 V, Recommend 3.3 V
7
P14
P0_14
CTS
Module input signal (Standard hardware flow control:
Clear To Send). When it is at a high level, the MCU serial
port is busy, and the module will not send data to the
MCU serial port. When it is at a low level, the module will
send data to the MCU serial port.
8
P04
P0_04/AIN2
I/O
9
P05
P0_05/AIN3
RESTOR
E
Keep this pin at a low level for 3 s, all parameters are
restored to factory settings.
10
P12
P0_12
Status
control
To control the switch of work and sleep mode. Active on
falling edge
11
P16
P0_16
Stutas
indicator
Connection status indicator: low when connected. (LED
always on)
12
P18
P0_18
I/O
13
P21/R
ESET
P0_21/RES
ET
I/O
Reset, active low.
14
SWCL
K
SWCLK
Debug
Serial wire debug clock input for debugging and
programming
15
SWDI
O
SWDIO
Debug
Serial wire debug I/O for debugging and programming
16
ANT
ANT
ANT
External antenna interface
17
GND
GND
-
Ground
18
GND
GND
-
Ground
19
GND
GND
-
Ground
20
GND
GND
-
Ground

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◆EFR32BG22 Series
The following figure 4 is the pin diagram of RF-BT02 and RF-BM-BG22A1/RF-BM-BG22A2/RF-BM-BG22A3. Table 7
shows the pin correspondence between the module and the development board. A1 ~ A9 correspond to pin 2 to pin 10
of the module, and A10 ~ A18 correspond to pin 16 to pin 24 of the module. Table 8 shows the module detailed pin
description.
Figure 4. Pin Diagram RF-BT02 (Left) and RF-BM-BG22A1/A2/A3 (Right)
Table 7. Pin Correspondence between RF-BM-BG22A1/A2/A3 and RF-BT02
Outside Pins of
RF-BT02
Description
Inside Pins of
RF-BT02
Description
B1
GND
A1
PB02
B2
VCC
A2
PB01
B3
GND
A3
RESTORE(PB00)
B4
GND
A4
PA00
B5
Module CTS (PA03)
A5
RESET (development board)

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B6
GND
A6
Module RTS (PA04)
B7
GND
A7
Module TX (PA05)
B8
GND
A8
Module RX (PA06)
B9
GND
A9
GND
B10
GND
A10
Slave mode connection status indicator
(PD01)
B11
GND
A11
Master mode connection status indicator
(PD00)
B12
GND
A12
PC00
B13
GND
A13
PC01
B14
GND
A14
PC02
B15
GND
A15
PC03
B16
RXD (CP2102)
A16
PC04
B17
TXD (CP2102)
A17
PC05
B18
GND
A18
GND
B19
GND
B20
VCC (5 V)
B21
VCC (3.3 V)
B22
RXD (CP2102)
B23
TXD (CP2102)
B24
RESET
B25
SWD (J-Link)
B26
SWC (J-Link)
B27
VCC (3.3 V)
B28
GND
Remark: B5 is the GPIO PA03 of the module, and A5 is the RESET pin of the development board.

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Table 8. Pin Functions of RF-BM-BG22A1/A2/A3
Pin
Name
Chip Pin
Pin Type
Description
1
EXT_ANT
-
-
External antenna pin.
2
PB02
PB02
I/O
GPIO
3
PB01
PB01
I/O
GPIO
4
PB00
PB00
RESTORE
Keep this pin at a low level for 5 s, all parameters are
restored to factory settings.
5
PA00
PA00
I/O
GPIO
6
PA03
PA03
CTS
The module input signal (Standard hardware flow
control: Clear To Send). When it is at a high level, the
MCU serial port is busy, and the module will not send
data to the MCU serial port. When it is at a low level,
the module will send data to the MCU serial port.
7
PA04
PA04
RTS
The module output signal (Standard hardware flow
control: Require To Send). When it is at a high level,
the module serial port is busy, and the MCU is not
allowed to send data to the module serial port. When
it is at a low level, the MCU is allowed to send data to
the module serial port.
8
PA05
PA05
TX
Serial port TX
9
PA06
PA06
RX
Serial port RX
10
GND
GND
-
Ground
11
RESET
RESET
I
Reset, active low, internal pull-up.
12
PA01
PA01
I/O
GPIO / SWCLK (connect j-link)
13
PA02
PA02
I/O
GPIO / SWCDIO (connect j-link)
14
GND
GND
-
Ground
15
VCC
VCC
-
1.71 V ~ 3.8 V, recommended to 3.3 V
16
PD01
PD01
Status
indicator
Slave mode (including Beacon) connection status
indicator: low when connected. (LED always on)
17
PD00
PD00
Status
Master mode connection status indicator: low when

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indicator
connected. (LED always on)
18
PC00
PC00
I/O
GPIO
19
PC01
PC01
I/O
GPIO
20
PC02
PC02
I/O
GPIO
21
PC03
PC03
I/O
GPIO
22
PC04
PC04
TX
GPIO
23
PC05
PC05
RX
GPIO
24
GND
GND
-
Ground

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◆CC2540/CC2541 Series
Figure 5 is the pin diagram of RF-BT02 and RF-BM-S02/RF-BM-S02A/RF-BM-S02I. Table 9 shows the pin
correspondence between the module and the development board. A1~A18 correspond to pin 1 to 18 pins of the module.
Table 10 shows the module detailed pin description.
Figure 5. Pin Diagram RF-BT02 (Left) and RF-BM-S02/RF-BM-S02A/RF-BM-S02I (Right)
Table 9. Pin Correspondence between RF-BM-S02/RF-BM-S02A/RF-BM-S02I and RF-BT02
Outside Pins of
RF-BT02
Description
Inside Pins of
RF-BT02
Description
B1
GND
A1
GND. Need to short-circuit via the jumper.
B2
VCC
A2
VCC. Need to short-circuit via the jumper.
B3
GND
A3
Sleep status indicator (P22)
B4
GND
A4
Connection status indicator (P21)
B5
Reset
A5
RESET

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B6
GND
A6
EN. Need to short-circuit via the jumper and pull
low. (P20)
B7
GND
A7
P17
B8
GND
A8
IIC_SCL (CC2541) / USB+ (CC2540)
B9
GND
A9
IIC_SDA (CC2541) / USB- (CC2540)
B10
GND
A10
RESTORE (P12)
B11
GND
A11
P11
B12
GND
A12
P07
B13
GND
A13
P06
B14
GND
A14
BRTS. Need to short-circuit via the jumper and
pull low. (P05)
B15
GND
A15
BCTS (P04)
B16
RXD (CP2102)
A16
Module TX. Need to short-circuit via the jumper
(P03)
B17
TXD (CP2102)
A17
Module RX. Need to short-circuit via the jumper
(P02)
B18
GND
A18
P01
B19
GND
B20
VCC (5 V)
B21
VCC (3.3 V)
B22
RXD (CP2102)
B23
TXD (CP2102)
B24
RESET
B25
DD (CC Debugger)
B26
DC (CC Debugger)
B27
VCC (3.3 V)
B28
GND
Table 10. Pin Functions of RF-BM-S02/RF-BM-S02A/RF-BM-S02I
Pin
Name
Chip Pin
I/O
Description
A1
GND
GND
-
Ground
A2
VCC
VCC
-
Power supply 2 V ~ 3.6 V

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A3
-
P22
O
Output (timed flip) / sleep status indication
A4
-
P21
O
Output (timed flip) / connection status indication
A5
RST
RST
I
Reset, active low.
A6
EN
P20
I
Module-enabled control circuit (active low)
0: Module starts to broadcast, until it connects to the mobile device.
1: Enter sleep mode immediately (0.1 µA), regardless of the
current status.
A7
-
P17
I/O
A8
-
-
I/O
A9
-
-
I/O
A10
RESTORE
P12
I/O
A11
PWM1
P11
O
PWM output channel 1
A12
PWM3
P07
O
PWM output channel 3
A13
PWM4
P06
O
PWM output channel 4
A14
BRTS
P05
I
As the request of data sending (for module wake-up)
0: Master has data to send, and the module will wait for data
transmission from the master, so the module will not sleep.
1. Master has no data to send, or data has been sent. So, the
value of the signal line should be set at “1”.
A15
BCTS
P04
O
Data input signal (for master wake-up, optional)
0: Module has data to send, and the master will receive the data
from the module.
1: Module has no data to send, or data has been sent, and the
value of the signal line should be set at “1”.
A16
TX
P03
O
Serial port TX
A17
RX
P02
I
Serial port RX
A18
ADC1
P01
I
Analog acquisition, channel 1

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◆CC2640R2F/CC2640R2L Series
Figure 6 is the pin diagram of RF-BT02 and RF-BM-4044B2/RF-BM-4044B3/RF-BM-4055B1L. Table 11 shows the pin
correspondence between the module and the development board. A1 ~ A18 correspond to pin 1 to 18 pins of the module.
Table 12 shows the module detailed pin description.
Figure 6. Pin Diagram RF-BT02 (Left) and RF-BM-4044B2/RF-BM-4044B3/RF-BM-4055B1L (Right)
Table 11. Pin Correspondence between RF-BM-4044B2/RF-BM-4044B3/RF-BM-4055B1L and RF-BT02
Outside Pins of
RF-BT02
Description
Inside Pins of
RF-BT02
Description
B1
GND
A1
GND. Need to short-circuit via the jumper.
B2
VCC
A2
VCC. Need to short-circuit via the jumper.
B3
GND
A3
TMS (XDS)
B4
GND
A4
TCK (XDS)
B5
Reset
A5
RST