Transmission Module JDY-31 User Manual

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Page 1

Bluetooth SPP Serial Port Transparent

Transmission Module

JDY-31 Bluetooth Backplane User Manual

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Version

Date

Description

V1.2

2018-09-21

Release version

V1.3

2019-01-08

1. Solved the problem that V1.2 can not connect to the computer

2. Added the MAC function of the output host after the module is connected to the host.

3. Added AT+ENLOG command, the user can use this command to open or block the boot, connect, and disconnect the serial output status.

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Product introduction:

Model

JDY-31

Working frequency

2.4GHZ

Communication Interface

UART

Operating Voltage

SMD type: 1.8-3.6V (3.3V recommended) with backplane: 3.6-6V (recommended 5V)

Operating temperature

-40 ° C - 80 ° C

Antenna

Built-in PCB antenna

Transmission distance

30 meters

Master-slave support

Slave

Module size

19.6 * 14.94 *1.8 mm (length, width, height)

Bluetooth version

Bluetooth 3.0 SPP

STM soldering temperature

<260°C

Unconnected operating current

4.7mA

Current after BLE connection

7.3mA

Transmit power

8db (maximum)

Receiving sensitivity

-97dbm

SPP maximum throughput

16K bytes/s (android, windows)

JDY-31 Bluetooth is based on Bluetooth 3.0 SPP design, which can support Windows,

Linux, android data transmission, working frequency 2.4GHZ, modulation mode GFSK,

maximum transmission power 8db, maximum transmission distance 30 meters, support

users to modify device name through AT command The baud rate and other instructions

are convenient and quick to use.

2. Applications:

JDY-31 is a classic Bluetooth protocol that can communicate with Bluetooth-enabled

computers (desktops, notebooks) and mobile phones (android). Can be applied

◆

Windows computer Bluetooth serial port transparent transmission

◆

Android Bluetooth serial port transparent transmission

◆

Smart home control

◆

Automotive ODB testing equipment

◆

Bluetooth toy

◆

Share mobile power, share weight

◆

Medical equipment

3. Pin function description

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Pin function description

STATE

Connection status pin (not connected low, high level after connection)

RXD

Serial input pin (TTL level)

TXD

Serial output pin (TTL level)

GND

Power ground

VCC

Power supply (support 3.6-6V)

Vacant

Pin Number

Pin Function

Pin Function Description

TXD

Serial output pin (TTL level)

RXD

Serial input pin (TTL level)

CTS

RTS

NULL

SWI

NULL

RST

Reset (active low)

VCC

Power supply (1.8-3.6V)

GND

Ground

ALED

Broadcast status pin (not connected to flash, output high level after connection)

STAT

Connection status pin (not connected low level, output high level after connection)

SELECT

NULL

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4. Serial AT instruction set

Num.

Command

Function

Default

AT+VERSION

version number

JDY-31-V1.2

AT+RESET

Soft reset

AT+DISC

Disconnected (valid in connection state)

AT+LADDR

Query the MAC address of the module

AT+PIN

Connection password settings and queries

1234

AT+BAUD

Baud rate setting and query

9600

AT+NAME

Broadcast name setting and query

JDY-31-SPP

AT+DEFAULT

reset

AT+ENLOG

Serial port status output enable

Command

Response

Parameter

AT+VERSION

+VERSION=JDY-31-V1.2,Blueto

oth V3.0

Command

Response

Parameter

AT+RESET

+OK

Command

Response

Parameter

AT+DISC

+OK

Command

Response

Parameter

AT+LADDR

+LADDR=<Param>

Command

Response

Parameter

AT+BAUD<Param>

+OK

Param: (4 to 9)

AT+BAUD

+BAUD=<Param>

4: 9600

JDY-31 module serial port send AT command must be added \r\n

Query the version number

Reset

Disconnect

Valid after connection

BLE Bluetooth MAC Address

Baud rate setting / query

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5: 19200

6: 38400

7: 57600

8: 115200

9: 128000

JDY-31 supports 128000 baud rate continuous data transmission and transmission, and does

Command

Response

Parameter

AT+PIN<Param>

+OK

Param: 4-digit password Default PIN: 1234

AT+PIN

+PIN=<Param>

Command

Response

Parameter

AT+NAME<Param>

Param: BLE broadcast name

Longest: 18 bytes

AT+NAME

+NAME=<Param>

Command

Response

Parameter

AT+DEFAULT

Command

Response

Parameter

AT+ENLOG<Param>

Param: 1 or 0

AT+ENLOG

+ENLOG=<Param>

1: Turn on the serial port

status output

0: Turn off the serial port

status output

Default: 1

not lose packets, the transmission speed can reach 16Kbytes per second.

SPP Bluetooth pairing password

Broadcast name setting / query

Reply to factory configuration

Serial port status output enable setting / query