Arduino HM-11 User manual

BluetoothV4.0HM-11BLEModule
Contents
1Introduction
2Features
3Specification
4ElectricalCharacteristics
5Pindefinition
6ATcommands&Configuration
7ExampleCode
Introduction
ThisisaSMDBLEmoduleusedinourBLEBeeandXadowBLE.ItisbasedonTIcc2541chip,enablesrobustnetwork
nodestobebuiltwithlowtotalbill-of-materialcostsandhighlysuitedforultralowpowerconsumptionsystems.The
moduleissmallandeasytouse,withthepreprogrammedfirmwareofmanufacturer,youcouldquicklybuildBLE
communicationsviaitsATcommand.SupportingBLEcommunicationswithiphone,ipadandAndroid4.3.
Features
Bluetoothprotocol:BluetoothSpecificationV4.0BLE
Workingfrequency:2.4GHzISMband
Interfaceway:aserialport
Openenvironmentwithin30meterscanrealizecommunicationbetweenmodules
Tosendandreceivenobytelimitbetweenmodules
Modulationmethod:GFSK(GaussianFrequencyShiftKeying)
Transmissionpower:-DBM,23-6DBM,0DBM,6DBM,canbemodifiedbytheATcommand
useTICC2541chip,configurationspaceof256KB,supporttheATcommand,theusercanaccordingtoneedto
changetherole(master,slavemode)andtheserialportbaudrate,nameofequipment,matchingparameters
suchaspasswords,useagile.
powersupply:+3.3VDC50mA
workingtemperature:-5~+65Centigrade
Specification
Specification Value
Microprocessor CC2541
Resources
SupporttheATcommand,theusercanaccordingtoneedtochangetherole
(master,slavemode)andtheserialportbaudrate,nameofequipment,Matching
parameterssuchaspassword,theuseofflexible.
OutlineDimension 13.5mmx18.5mmx2.3mm
Powersupply 3.3V
CommunicationProtocol Uart(3.3VLVTTL)
IOcounts 2
KeyinputIO 1
LEDIndicatorsIO 1
Connectivity SocketcompatiblewithXBee
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User Manual

ElectricalCharacteristics
Specification Min Typ Max Unit
MaxInputVoltage -0.3 3.6 V
WorkingInputVoltage 2.0 3.3 3.6 V
TransmitCurrent 15 mA
ReceiveCurrent 8.5 mA
DeepSleepCurrent 600 uA
OperatingTemperature -40 +65 °C
Pindefinition
Pin Name Description
1 UART_RTS UART
2 UART_TX UART
3 UART_CTS UART
4 UART_RX UART
5 NC
6 NC
7 NV
8 NV
9 VCC Powersupply3.3V
10 NC
11 RESETB Reset,activelowatleastin5ms
12 GND GND
13 PIO3 IOport,usedforconnecttoDHT11/DS18B20
14 PIO2 Digitalinput,output
15 PIO1 LEDindicator
16 PIO0 Buttonpin
ATcommands&Configuration
1）QuerythenativeMACaddress
Send:AT+ADDR?
Sendafterasuccessfulreturn:OK+LADD:MACaddress(addressfor12string)

2）Querythebaudrate
Send:AT+BAUD?
Sendafterasuccessfulreturn:OK+Get:[para1]
Scopeofpara1:0~8.Theparameterscorrespondingto:0represents9600,1,2,9600,38400,onbehalfofthe
representativerepresentativeof57600,115200,5,4800,6,7represents1200,12002400.Thedefaultbaudrateto
9600.
3）Setthebaudrate
Send:AT+BAUD[para1]
Sendafterasuccessfulreturn:OK+Set:[para1]
Example:send:AT+BAUD1,return:OK+Set:2.Thebaudrateissetto19200.
Note:aftertheswitchtothe1200,modulewillnolongersupporttheconfigurationsoftheATcommand,andpress
thePIO0understandby,modulecanrestorethefactorySettings.Donotrecommendusingthebaudrate.After
settingthebaudrate,modulesshouldbeonelectricity,anewsetparameterscantakeeffect.
4）fromthedeviceconnectedtothebluetoothaddressspecified
Send:AT+CON[para1]
Sendafterasuccessfulreturn:OK+CONN[para2]
Para2rangeis:A,E,F
Example:fromthebluetoothaddressis:0017EA0943AE,sendingtheAT+CON0017EA0943AE,modulereturns:OK+
CONNAorOK++CONNFCONNEorOK.
5）removalequipmentmatchinginformation
Send:AT+CLEAR
Sendafterasuccessfulreturn:OK+CLEAR
Clearsuccesshadconnecteddeviceaddresscodeinformation.
6）querymoduleworkingmode
Send:AT+MODE?
Sendafterasuccessfulreturn:OK+Get:[para]
Para:therangeof0~2.0representspassthroughmode,onbehalfofthePIOacquisition+remotecontrol+1
passthrough,2representativepassthrough+remotecontrolmode.Thedefaultis0.
7）setmoduleworkingmode:
Send:AT+MODE[]
Sendafterasuccessfulreturn:OK+Set:[para]
8）querydevicename
Send:AT+NAME?
Sendafterasuccessfulreturn:OK+NAME[para1]
9）setthedevicename
Send:AT+NAME[para1]
Sendafterasuccessfulreturn:OK+Set:[para1]
Example:SetthedevicenametoSeeed,sendingtheAT+NAMESeeed,returnOK+Set:SeeedATthistime,the
nameofthebluetoothmodulehasbeenchangedtoSeeed.Note:aftertheinstructionexecution,requiredto
electricity,settheparametersoftheapproval.
10）querymatchingpassword
Send:AT+PASS?
Sendafterasuccessfulreturn:OK+PASS:[para1]
Para1rangeis000000~999999,thedefaultis000000.
11）pairingsetpassword
SendtheAT+PASS[para1]
Sendafterasuccessfulreturn:OK+Set:[para1]
12）restorefactorySettings
TheAT+RENEWsend
Sendafterasuccessfulreturn:OK+RENEW
RestorethedefaultfactorySettingsmodule,themoduleSettingswillberesetso,backtothefactorywiththestatus
ofthefactorydefault,delaymodule500msaftertherestart.Ifnoneed,pleasebecareful.
13）modulereset
Send:AT+RESET
Sendafterasuccessfulreturn:OK+RESET
Aftertheinstructionexecutionmodulewilldelay500msaftertherestart.

if(Serial.available())
mySerial.write(Serial.read());
}
14）setthemaster-slavemode
Send:AT+ROLE[para1]
Sendafterasuccessfulreturn:OK+Set:[para1]
ExampleCode
//master
/*
Thisexamplecodeisinthepublicdomain.
*/
#include<SoftwareSerial.h>
SoftwareSerialmySerial(2,3);//RX,TX
voidsetup()
{
//Openserialcommunicationsandwaitforporttoopen:
Serial.begin(9600);
while(!Serial){
;//waitforserialporttoconnect.NeededforLeonardoonly
}
Serial.println("Goodnightmoon!");
//setthedataratefortheSoftwareSerialport
mySerial.begin(9600);
//setmaster
mySerial.print("AT+ROLE1");
delay(10000);
}
voidloop()//runoverandover
{
//setthedataratefortheSoftwareSerialport
mySerial.print("testIammaster");
delay(10000);
if(mySerial.available())
Serial.write(mySerial.read());
if(Serial.available())
mySerial.write(Serial.read());
}
//slave
/*
Thisexamplecodeisinthepublicdomain.
*/
#include<SoftwareSerial.h>
SoftwareSerialmySerial(2,3);//RX,TX
voidsetup()
{
//Openserialcommunicationsandwaitforporttoopen:
Serial.begin(9600);
while(!Serial){
;//waitforserialporttoconnect.NeededforLeonardoonly
}
Serial.println("Goodnightmoon!");
//setthedataratefortheSoftwareSerialport
mySerial.begin(9600);
//setslave
mySerial.print("AT+ROLE0");
delay(10000);
}
voidloop()//runoverandover
{
//setthedataratefortheSoftwareSerialport
mySerial.print("testIamslave");
delay(10000);
if(mySerial.available())
Serial.write(mySerial.read());