Hi-Link HLK-B10 Manuale utente

Shenzhen Hi-link Electronic co.,ltd

HLK-B10

Serial port -Bluetooth Transmission Module

User manual

Version：V1.0 Revise Date：2019-8-12 Rights reserved@ShenZhen Hi-link Electronic co.,Ltd

CONTENT

1. BRIEF INTRODUCTION...................................................................................................... 3

2. PIN DEFINITION.................................................................................................................. 4

3. TYPICAL APPLICATION CIRCUIT.................................................................................... 6

4. BASIC FUNCTIONAL DESCRIPTION............................................................................... 6

4.1.TWO WORKING STATES OF THE MODULE.......................................................... 6

4.2.FUNCTION KEYS AND STATUS INDICATORS..................................................... 7

4.2.1.STATE OUTPUT PIN......................................................................................7

4.2.2. FUNCTION KEY INPUT PIN........................................................................7

4.3. SWITCHING BETWEEN TRANSMISSION AND AT COMMAND MODE........... 8

4.3.1.SWITCH FROM TRANSMISSION TO AT INSTRUCTION MODE.............. 8

4.3.2.FROM AT INSTRUCTION MODE TO TRANSMISSION MODE................. 8

5. AT COMMAND..................................................................................................................... 9

5.1.AT COMMAND FORMAT ........................................................................................ 9

5.2.AT COMMAND LIST AND FUNCTIONAL DESCRIPTION..................................10

6. BLUETOOTH CONNECTION METHOD..........................................................................11

7. TEST TOOLS AND METHODS..........................................................................................12

7.1.TEST BOARD.............................................................................................................12

7.2.TRANSMISSION TEST METHOD........................................................................... 13

7.3.DATA TRANSMISSION TEST BETWEEN SERIAL PORT AND MOBILE APP........13

8. REVISED RECORD.............................................................................................................. 16

9. TECHNICAL SUPPORT AND CONTACT INFORMATION................................................ 16

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HLK-B10

1. Brief Introduction

HLK-B10 is a single-mode BLE5.0 Bluetooth transmission module developed by

Hi-Link Electronics. It integrates Bluetooth radio frequency chip and a small number of

peripheral devices, embedded in 32-bit MCU,500KB flash memory with low power

consumption, 64KB SRAM and rich peripheral resources.

Meet to Bluetooth 5.0 specification, it can be used as Bluetooth slave device and

connected by various Bluetooth host devices.

The module's serial port Bluetooth two-way transmission function is very Simple to use.

Users do not need to understand the complex Bluetooth protocol stack, just connect the

customer's equipment or MCU's serial port to the module, and the module will

automatically complete the two-way data transmission between the serial port and

Bluetooth, which just like a bridge between the user's MCU serial port and Bluetooth

equipment, so that users can quickly and simply use the serial port equipment to realize

Bluetooth wireless transmission function.

Support AT command mode, the user can query or set the basic parameters of the module

through serial port AT command, such as device name, serial port baud rate and so on.

We develop and provide a wealth of testing tools and using documents, and provide

testing APP Demo to facilitate users to quickly start and apply this module. Our company

can also provide flexible and rich custom development services according to the specific

needs of customers.

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HLK-B10

2. Pin Definition

Symbol

IO type

Function

RST

Module reset input pin，Low level efficiency

P07

I/O

GPIO7

P31

I/O

ADC/CH1

P10

I/O

PWM[0](20mA)

P11

I/O

Keystroke input pin，Low level efficiency

P12

I/O

PWM[2]

P13

I/O

PWM[3]

3.3V

Module power supply 3.3V

P32

ADC

Ch2

P34

ADC

Ch4

P30

ADC

Ch0

P33

ADC

Ch3

P14

I/O

PWM[4]

P15

I/O

PWM[5]

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HLK-B10

Symbol

IO type

Function

GND

Power reference place

P02

I/O

State indicate LED output,Low level efficiency

P03

I/O

GPIO3

P04

I/O

GPIO4

P05

I/O

GPIO5

P06

I/O

GPIO6

RXD

I/O

UART input

TXD

I/O

UART output

Illustration：

P represents power pin，

I/O represents an input / output pin,

AO represents an analog input and output pin.

3. Typical Application Circuit

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HLK-B10

4. Basic Functional Description

4.1. Two working states of the module

HLK-B10 module has two working states: transmission mode and AT command mode.

In AT command mode, the command can be sent to the module through serial port to

configure the parameters of the module and query the information of the module.

In transmission mode, the module will transmit the serial port data and Bluetooth

connection data in two-way.

Starting module, the default is the transmission mode; there is no affect to the Bluetooth

connection state when exit transmission mode into AT mode. The serial port-Bluetooth data

transmission is paused, and the data received by the serial port is processed by the current

AT instruction. After the transmission is restored, the data transmission will continue.

4.2. Function Keys and Status Indicators

4.2.1. State output pin

The 16th foot of the module P02 is output pin for state LED，When this pin is connected to

the LED cathode, the current working status of the module can be displayed through the

light and off status of the LED. The LED display status is defined as follows：

AT command

mode

Intermittent flash（every 2 fast flash）

Transmission

mode

No connect Bluetooth，slow flash

（bright 1s turn off 1s）

Connect Bluetooth，Long bright and short off

（bright 5s turn off 100ms）

Restore default settings，Continuous flash

4.2.2. Function key input pin

Module 5 pin P 11 for function key input pin. that is ES/Del pin, a key can be connected

between this pin and GND,The functions corresponding to different operation of the key are

as follows：

Short press（50ms～1s）the module will exit transmission mode. ，switch to AT command

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mode；

Long press（More than 6s），release the button when the status LED starts flashing, the

module will restore the default settings, and automatically restart.

4.3. Switching Between Transmission and AT Command Mode

4.3.1. From transmission mode to AT command mode

There are two ways to switch the transmission to AT command mode:

key mode：

Pull down the fifth pin 50ms～1s，The module immediately enters the AT command mode.

In transmission mode,the serial port receives special format data to automatically exit

the transmission：

When you are about to exit transmission mode, the serial port pauses the input 200ms to

ensure that the data in the serial port is sent empty, and then enter “+++”,After receiving the

reply "a", enter "a" and pause 200ms to ensure that there is no subsequent data input to exit

the transmission mode. Do not have any input before and after "+++"and “a”, including"\ r\

n "to avoid fault operation.

4.3.2. From AT instruction mode to transmission mode

Send command：AT+TS=1

The conversion logic for transmission mode and AT command mode is as following：

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5. AT command

5.1. AT command format

Format the class command：AT+<x>=<...>

X represents the name of the parameter to set，…represent Parameter Value

Set a successful return value：

Set return value for failure or format error：

AT+<x>=<...>

ERROR

example：

send out：AT+DEVNAME=HLK-B10

received：AT+DEVNAME=HLK-B10

Query class command format：AT+<x>=?

x represents parameter name of the query，… represent parameter value。

Returned value ：

AT+<x>=?

<...>

example：

send out：AT+DEVNAME=?

received：AT+DEVNAME=?

HLK-B10

5.2. AT Command list and functional description

Command name

Function

Example

AT+VER

Query module software version number

send out：AT+VER=?

received：V1.01(190806)

AT+MAC

Query module MAC address

send out：AT+MAC=?

received：11:22:33:44:55:66

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AT+TS

Restore to transmission mode

Send out：AT+TS=1

received：OK

AT+BAUDRATE

Set or query module serial port baud rate

Default baud rate：115200

Send out：AT+BAUDRATE=115200

received：OK

Send out：AT+BAUDRATE=?

received：115200

AT+DEVNAME

Set or query the (Bluetooth) name of the

module

Default：HLK-B10_****

Send out：AT+DEVNAME=test123

received：OK

Send out：AT+DEVNAME=?

received：test123

AT+LINKS

Query module Bluetooth connection status

Send out：AT+LINKS=?

//connecting，MAC with Bluetooth host

after comma

received：1, 8B:09:3C:3C:B0:74

//Not connected on

received：0

AT+RECONN

Set to disconnect the module from the

current Bluetooth connection

Send out：AT+RECONN=1

received：OK

AT+REBOOT

Restart module

Send out：AT+REBOOT=1

received：OK

AT+DEFAULT

Restore default settings

Send out：AT+DEFAULT=1

received：OK

6. Bluetooth Connection Method

As a Bluetooth 5.0 slave device, HLK-B10 module provides a fff0 service, and Bluetooth

data transmission is mainly based on this service. Bluetooth host devices, such as mobile

phone APP, connect Bluetooth of the module ,using fff0 service to transmit data between

mobile phone and HLK-B10 module through Bluetooth.

UUID

Operation permission

Function definition

0xfff1

Read/Notify

Module sending，APP receiving

0xfff2

Write Without Response

APP send out，Module receiving

When the mobile phone is connected to the module Bluetooth and the mobile phone

actively enables the notify attribute, the data sent by the module can be received.

Our company has developed the mobile phone APP side test Demo, and provides the Demo

source code to the user, which has the detailed Bluetooth connection and the data sending

and sending example, the concrete implementation and the application please refer to the

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test Demo program.

7. Test Tools and Methods

7.1. Test board

Users can choose our special test board to quickly start testing and using the HLK-B10

module。

The test board is directly powered by USB, which is provided with a USB to serial port

function. After the computer is connected through a USB cable, the serial port of the

module can be connected through a USB to serial port, and the serial port of the module is

not required to be additionally connected, so that the device is convenient to use.

The appearance layout and function description of the test board are as follows：

7.2. Transmission test method

HLK-B10 the transmission function logic of the module is as follows:

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