DF ROBOT BLE4.1 Manuel utilisateur



DFRobotBLE4.1ModuleSKU:TEL0120

Introduction

BLE4.1 Module is DFRobot newly developed Bluetooth 4.1 transmission module, adhering to the

same usage of Bluno, and increasing the star network function, KISS connection (Approach

Connection). The new Bluetooth is designed based on BLE 4.1 technology. It has low power

consumption and other special features. In the BLE transmission, the point-to-point output rate is

4Kbps, equivalent to the original Bluno twice the rate.

BLE4.1 Module uses DA14681 high-performance BLE chip, it integrates advanced power

management system, coming with 3.7V lithium battery charging circuit. It obtains power directly from

the USB port. Support 400mA maximum charge current,

Feature

Support BLE 4.1 master and slave switch

Support Bluetooth serial data transmission

Support Bluetooth point-to-point wireless programming

Support Bluetooth 4.1 multi-device cascade (up to 4)

Support Arduino Bluetooth library (support for multi-Bluetooth connection)

Support low power consumption Bluetooth (standby 25uA; interrupt 70uA)

Two-way interrupt wake up:

* BLE4.1 wake up controller via P4_2 (high level wake up)

* The controller wakes up BLE4.1 via WAKEUP (low level wake)

Support KISS connection method (Approach Connection)

Support Bluetooth firmware update

Support lithium battery powered

Support USB to charge the lithium battery

LED status indicator

Specification

Processor: DA14681 (ARM Cortex-M0 CPU)

Operating Voltage: 3.3V

USB input Voltage: 4.2V ~ 5.0V

Lithium battery powered: 3.7V

Support USB charging (chip comes with charging function)

Charging current: 10mA ~ 400mA (max)

Allow external lithium battery capacity: 20mAh ~ 500mAh (max)

Supports low power consumption: only 30uA / MHz minimum 2uA

Single I / O port maximum output current: 4.5mA

Allows I / O port maximum output total current: 100mA

Supports three network connection modes (P2P connection, star network, tree network [Developing])

Maximum number of slave connections: 4 (simultaneous connection)

Maximum transfer rate of 4Kbps

Flash: 8Mbit

64KB OTP

128KB Data SRAM

16KB Cache SRAM

128KB ROM

On-chip crystal: 16MHz, 32.768KHz

Three power management modes: Extended sleep, Deep sleep, Hibernation

29 digital I / O ports

8 analog inputs

1 SPI

2 I2C (supports 100KHz and 400KHz two communication rates)

2 UARTs

6 PWM

I2S / PCM master-slave interface

IR interface (PWM)

Support USB1.1 (computer-side simulation into a serial port)

Built-in temperature sensor

Transmit power consumption: 3.4mA (TX) 3.1mA (RX)

Operating temperature: -40 ~ +85 

Dimension: 25 * 18 * 3 mm/ 0.98 * .70 * 0.11 inches

Layout

Fig1: DFRobot_BLE4.1_Module PinOUT

Fig2: DFRobot_BLE4.1_Module PinMap

Note: VBUS and GND are USB Power port; BAT+ and BAT- are battery power po

rt.

Note: There is a 0.1 ohm resistor between BAT- and GND. The battery can also be

used directly between BAT + and GND when in use

Dimension

Dimension: 25 × 18 x 3 mm

Fig3: DFRobot_BLE4.1_Module Dimension

ATCommand

To get a ‘better’ Bluetooth experience on BLE 4.1 modules, we highly recommand you to

update the newest firmware first.

AT is the abbreviation of attention. AT command is the communication command used to configure

Bluetooth parameters. It begins with AT, end with <CR+LF> (carriage return and line feed).

NOTE: <CR+LF> is not a part of AT Command.

ATCommandList

AT Command Function Parameters <X>

T+ROLE=<X> Set Bluetooth

mode

“?” Query Bluetooth working mode

“ROLE_CENTRAL” Set as the central device

“ROLE_PERIPHERAL” Set as the peripheral device

T+NETWORK=<X> Set network

mode

“?” Query the network mode

“P2P” Set to peer to peer connection

“STAR” Set to star network

T+MIN_INTERVAL=<X>

Set the

minimum

communication

interval

“?” Query the current minimum communication interval (10~99999ms)

T+MAX_INTERVAL=<X>

Set the

maximum

communication

interval

“?” Query the current maximum communication interval (10~99999ms)

T+BIND=<X> Set binding

Bluetooth

address

“?” Query the current binding MAC address

e.g.: 0x0017ea9397e1 Set Bluetooth MAC address in need

T+CMODE=<X> Set BLE

connection

mode

“?” Query the current connection mode

“UNIQUE” Specify the connection mode

“ANYONE” Set to free connection

T+MAC=<X> Query the

Bluetooth

address “?” Query the current Bluetooth MAC address

T+NAME=<X> Set the name “?” Query the Bluetooth device name

“DFBLEduino2”

T+SETTING=<X> Modify/Reset

to default <X>

mode

“?” Query the current setting

“DEFAULT” Reset to initial setting

“DEFPERIPHERAL” Reset to initial slave setting

“DEFCENTRAL” Reset to initial host setting

T+USB_MONITOR=<X> Turn the USB

monitor

ON/OFF

“?” Query the current USB monitor

“ON” Turn on the USB monitor

“OFF” Turn off the USB monitor

T+HELP=<X> Get help from

T command “ALL” Query all AT commands help information

T+NET_INF=<X>

Query device

information in

the current

network

“?” Query device network information

T+VERSION=<X> Query the

firmware

version “?” Query firmware version information

T+RSSI=<X> Query the

RSSI value “?” Query the RSSI value

T+P<n>=<X>

Query & Set

P(n,

n=0,1,2,3...)

status

“?” Set IO pins to input mode and query the voltage

“1” Set IO pins to output mode and output HIGH voltage

“0” Set IO pins to output mode and output LOW voltage

T+WL=<X> Query/Declare

the White List “?” Query the White List

“NONE” Declare the White List

T+LOWPOWER=<X> Query & Set

the low-power

mode

“?” Query the low-power mode

“ON” Turn on the low-power mode

“OFF” Turn off the low-power mode

T+EXIT Exit the AT

command

mode Exit the AT command mode



ConfiguretheBLEthroughATcommand

1. Open the Arduino IDE.

2. Select the correct serial port in Menu->Tool->Serial port

3. Open the Serial monitor (on the upper right of the IDE windows)

4. Select the "No line ending"(①) and 115200 baud(②) in the pull-down menu

5. Type "+++"(③) like this and press send button(④)

6. If the AT Command Mode is successfully access , you will receive "Enter AT Mode"(⑤) from it.

Fig1: +++ enter the AT CMD Mode

7. Select the "Both NL & CR"(①) and 115200 baud(②) in the pull-down menu

8. Type or copy the AT command in the dialog(③) like this and press send button(④)

9. If the BLE is successfully configured , you will receive "OK"(⑤) from it.

Fig1: enter the AT command，remember selecting the Both NL & CR

10. If received "ERROR CMD" instead, try sending it again or you should check whether the

command is correct or not.

11. USE “AT+EXIT” to exit AT Mode

12. You can input AT+HELP=ALL to query all AT Command information

Fig1: Enter AT+HELP=? to get AT Command List

BluetoothConnection

Before using BLE4.1 series devices, it is better to know some key buttons first.

BOOT: Update Bluetooth firmware/Enable the approach connection (<10cm).

Firmware update**: Press and hold the "BOOT" button until you plug USB cable, entering firmware

update mode. For any enquiry, please refers to the part: Firmware Update. (You can release your

hand after you plugged the USB cable.)

Approach connection**: Press and hold the host BOOT button, approach the slave Bluetooth

device to connect.

WAKEUP: the button can wake up the device from low-power consum[ption mode (you can also

connect this pin to MCU to realize the same function)

RST: BLE4.1 reset button

Below is the BLE4.1 minimum system circuit diagram for your reference: Fig1: the BLE4.1

minimum system circuit diagram

Fig1: BLE4.1 Minimum System Schematic

SmartphoneBluetoothConnection



Android Terminal and IOS Terminal

BlunoBasicDemo Android, Android source code (DFRobot)

LightBlue IOS

Blynk IOS

Different from the traditional Bluetooth (such as Bluetooth headset), BLE4.1 need specified

eigenvalue and device service ID to connect smartphone. The direct connection between BLE and

smartphone device manager will lead to communication problems. Therefore, it needs a the third

party APP, such as BunoBasicDemo (published by DFRobot), BLE Device Monitor from TI .etc.

In this section, we'll take BunoBasicDemo published by DFRobot as an example.

Set BLE4.1 as peripheral device with command AT+ROLE=ROLE_PERIPHERAL. Set connection

mode as P2P by AT+NETWORK=P2P command and restart BLE4.1 (power off and restart).

Open BunoBasicDemo app, click SCAN, then we'll see the scanned BLE4.1 device .

Fig1: Scanning

Click the device to connect. Once it connected successfully, it will show Connected and LINK will

light for 3s and blink for every 3s.

Fig2: Connected

Send data frome the Data sending Area

Ce manuel convient aux modèles suivants

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