Seeed Grove - BLE Manuale utente
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Document Revision History
Revision
Date
Author
Description
1.0
Sep 21, 2015
Victor.He
Create file
3
Contents
Document Revision History···································································································2
1. Introduction ···················································································································2
2. Specification···················································································································3
3. Detailed description·······································································································4
3.1 Pinout································································································································ 4
3.2 Features of Design············································································································· 4
3.3 AT Commands ··················································································································· 4
4. SoftwareSerial Communication ·····················································································7
4.1 Demo: BLE Slave················································································································ 7
4.2 Demo : BLE Master············································································································ 8
5. Resources ·····················································································································10
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Disclaimer
For physical injuries and possessions loss caused by those reasons which are not related to product quality,
such as operating without following manual guide, natural disasters or force majeure, we take no
responsibility for that.
Under the supervision of Seeed Technology Inc., this manual has been compiled and published which
covered the latest product description and specification. The content of this manual is subject to change
without notice.
Copyright
The design of this product (including software) and its accessories is under tutelage of laws. Any action to
violate relevant right of our product will be penalized through law. Please consciously observe relevant local
laws in the use of this product.
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1. Introduction
Grove - BLE v1 (Grove - Bluetooth Low Energy v1) uses a Low Energy Bluetooth module -- HM-11, based on
TI CC2540 chip, which has AT command support. As a Grove product it's convenient to use Grove - BLE with
Arduino board via Base Shield.
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2. Specification
Specifications
Name
BT Version
Bluetooth Specification V4.0 BLE
Working frequency
2.4GHz ISM band
Modulation method
GFSK(Gaussian Frequency Shift Keying)
RF Power
-23dbm, -6dbm, 0dbm, 6dbm, can modify through AT Command AT+POWE
Speed
Asynchronous: 6K Bytes, Synchronous: 6K Bytes
Sensitivity
≤-84dBm at 0.1% BER
Security
Authentication and encryption
Service
Central & Peripheral UUID FFE0,FFE1
Supply Power
3.3v - 5v
Working temperature
–5 ~ +65 Centigrade
Size
20cm x 10cm
Working Current
< 10 mA
Sourcing Current
< 20 mA
Sleeping Current
< 1 mA
Attention: The supply power of HM-11 is 3.3v, but the Grove - BLE is 3.3v to 5v
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3. Detailed description
3.1 Pinout
Grove connector has four wires: GND, VCC, RX, and TX.
3.2 Features of Design
We have used TD6810 chip as the voltage regulator, so the range of the supply power can be 3.3v to 5v.
Also, there's a level shift circuit which make sure the accuracy of data transmission.
3.3 AT Commands
1）Query module address
Send：AT+ADDR?
Receive：OK+LADD: address
2）Query baud rate
Send：AT+BAUD?
Receive：OK+Get:[para1]
Range ：0~8 ; 0--9600，1--19200，2--38400，3--57600，4--115200，5--4800，6--2400，7--1200，8--
230400。Default: 0--9600.
Set baud rate
Send：AT+BAUD[para1]
Receive：OK+Set:[para1]
e.g. ：Send ：AT+BAUD1 ，Receive：OK+Set:1. The Baud rate has been set to 19200。
Note: If setup to Value 7, After next power on, module will not support any AT Commands, until PIO0 is
pressed, Module will change Baud to 9600.
3）Try connect an address
Send：AT+CON[para1]
Receive：OK+CONN[para2]
Range ：A,E,F
e.g. ：Try to connect an device which MAC address is 00:17:EA:09:09:09
Send: AT+CON0017EA090909
May receive a reply: OK+CONNA --> Accept request, connecting ; OK+CONNE --> Connect error ; OK+CONN
--> Connected , if AT+NOTI1 is setup ; OK+CONNF --> Connect Failed , After 10 seconds
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Notice: Only central role is used. If remote device has already connected to other device or shut down,
“OK+CONNF” will received after about 10 Seconds.
4）Clear Last Connected device address
Send：AT+CLEAR
Receive：OK+CLEAR
5）Query Module Work Mode
Send：AT+MODE?
Receive：OK+Get:[para]
Range：0~2. 0: Transmission Mode; 1: PIO collection Mode + Mode 0 ; 2: Remote Control Mode + Mode 0 .
Default 0.
Set Module Work Mode
Send：AT+MODE[]
Receive：OK+Set:[para]
6）Query Module name
Send：AT+NAME?
Receive：OK+NAME[para1]
Set Module name
Send：AT+NAME[para1]
Receive：OK+Set:[para1]
e.g. ：Send: AT+NAMESeeed ，Receive : OK+Set:Seeed
Notice: Name would change after next power on.
7）Query Pin Code
Send：AT+PASS?
Receive：OK+PASS:[para1]
Range : 000000~999999. Default: 000000.
Set Pin Code
Send: AT+PASS[para1]
Receive：OK+Set:[para1]
8）Restore all setup value to factory setup
Send：AT+RENEW
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Receive：OK+RENEW
9）Restart module
Send：AT+RESET
Receive：OK+RESET
10）Query Master and Slaver Role
Send：AT+ROLE[para1]
Receive：OK+Set:[para1]
Range : 0~1。0--Peripheral: 1--Central: Default: 0.
More AT commands please refer to the Date sheet of BLE module.
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4. SoftwareSerial Communication
Grove - BLE can be acted as a master or slave, you can use the one via different demos.If you are going to
use the following SoftwareSerial program, please refer to the way of connection in the previous pic. TX-
->D2, RX-->D3.
Open Arduino IDE, copy the following program and upload it onto the Arduino/Seeeduino board. And then
two BLE modules can communicate with each other.
4.1 Demo: BLE Slave
#include <SoftwareSerial.h> //Software Serial Port
#define RxD 2
#define TxD 3
#define DEBUG_ENABLED 1
SoftwareSerial BLE(RxD,TxD);
void setup()
{
Serial.begin(9600);
pinMode(RxD,INPUT);
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