USR IOT USR-C322 User manual

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USR-C322 USR-C322 USR-C322 USR-C322
----Low Low Low LowPower Power Power PowerMinisize Minisize Minisize MinisizeWiFi WiFi WiFi WiFiModule Module Module ModuleUser User User UserManual Manual Manual Manual
VVVV2. 2. 2. 2.1 111
Support[email protected]GHz802.11b/g/nwirelessstandards
BasedonARMCortex-M4kernelrunningfrequencyof80MHZ

SupportWEP、WPA/WPA2securitymode
SupportAP/STAworkingmode
SupportSimplelink/usrlinkNetworkingconfiguration
Supportcustomwebfunction
FullyintegratedserialportturnwirelessTCP/UDPtransmissionfunction,therateofserial
portupto3Mbps
Supports485transcontrol
Supporttwouartandthreesocketcommunication
SupportPC116bytesencryptionwhenworkintransmode
SupporttheHTTPDClientfunction
Supportwebsocketfunction
SupportSSLClientfunction
Searchinlocalareanetwork(LAN)andwirelessparameterssettingfunction
SupportTCP/UDPClientregisteredpacketmechanism
SupportsimilarRFC2217automaticbaudrateadaptationfunction
SupportAT+simpleinstructionsetconfiguration
Single3.3Vpowersupply
Ultralowpowermode,supportdeepdormancy

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Minisize:18.22mm*26.65mm*2.8mmSMT



FCC/CECertificated

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Catalogue
Catalogue
Catalogue
Catalogue
1
1
1
1、
、
、
、Module
Module
Module
ModuleOverview
Ove rview
Overview
Overview.....................................................................................................................................................4
1.1
1.1
1.1
1.1Module
Mod ule
Module
ModuleOverview
Ove rview
Overview
Overview................................................................................................................................................4
1.2
1.2
1.2
1.2Characteristics
Cha racteristics
Characteristics
Characteristicsof
of
of
o fModule
Mod ule
Module
Module..................................................................................................................................4
1.3
1.3
1.3
1.3functional
fun ctional
functional
functionalblock
blo ck
block
blockdiagram
dia gram
diagram
diagram...................................................................................................................................6
1.4
1.4
1.4
1.4Product
Pro duct
Product
ProductFeature
Fea ture
Feature
Feature...................................................................................................................................................7
1.5
1.5
1.5
1.5Application
App lication
Application
ApplicationArea
Are a
Area
Area..................................................................................................................................................7
2
2
2
2、
、
、
、Hardware
Hardware
Hardware
HardwareDescription
Des cription
Description
Description.............................................................................................................................................9
2.1
2.1
2.1
2.1Pin
Pin
P in
PinDefinitions
Def initions
Definitions
Definitions.....................................................................................................................................................9
2.2
2.2
2.2
2.2Antenna
Ante nna
Antenna
AntennaShows
Sho ws
Shows
Shows..................................................................................................................................................10
2.3
2.3
2.3
2.3Size
Siz e
Size
Sizeand
and
a nd
andLayout
Lay out
Layout
LayoutRecommendations
Rec ommendations
Recommendations
Recommendations.................................................................................................................11
2.4
2.4
2.4
2.4The
The
Th e
TheHardware
Har dware
Hardware
HardwareCircuit
Cir cuit
Circuit
CircuitDesign
Des ign
Design
DesignReference
Refe rence
Reference
Reference........................................................................................................12
3
3
3
3、
、
、
、Product
Product
Product
ProductFunction
Fun ction
Function
Function...................................................................................................................................................14
3.1
3.1
3.1
3.1Wireless
Wir eless
Wireless
WirelessNetwork
Netw ork
Network
NetworkMode
Mod e
Mode
Mode...................................................................................................................................14
3.2
3.2
3.2
3.2Work
Wor k
Work
WorkMode
Mod e
Mode
Mode........................................................................................................................................................15
3.3
3.3
3.3
3.3Socket
Soc ket
Socket
SocketCommunication
Com munication
Communication
Communication.....................................................................................................................................17
3.4
3.4
3.4
3.4Custom
Cus tom
Custom
Customweb
web
w eb
webfunction
fun ction
function
function........................................................................................................................................22
3.5
3.5
3.5
3.5Search
Sea rch
Search
Searchin
in
in
i nlocal
loc al
local
localarea
are a
area
areanetwork
netw ork
network
network............................................................................................................................22
3.5
3.5
3.5
3.5TCP/UDP
TCP /UDP
TCP/UDP
TCP/UDPClient
Cli ent
Client
ClientRegistration
Reg istration
Registration
RegistrationPacket
Pac ket
Packet
PacketMechanism
Mec hanism
Mechanism
Mechanism.........................................................................................23
3.7
3.7
3.7
3.7Fast
Fas t
Fast
FastAccess
Acc ess
Access
AccessWi-Fi(usrlink)
Wi-F i(usrlink)
Wi-Fi(usrlink)
Wi-Fi(usrlink)...............................................................................................................................24
3.8
3.8
3.8
3.8Simplelink
Sim plelink
Simplelink
SimplelinkConfiguration
Con figuration
Configuration
Configuration.................................................................................................................................26
3.9
3.9
3.9
3.9RFC2217
RFC 2217
RFC2217
RFC2217Automatic
Auto matic
Automatic
AutomaticBaud
Bau d
Baud
BaudRate
Rate
R ate
RateFunction
Fun ction
Function
Function......................................................................................................27
3.10
3.10
3.10
3.10Sleep
Sle ep
Sleep
SleepMode
Mod e
Mode
ModeIntroduction
Intr oduction
Introduction
Introduction................................................................................................................................28
4
4
4
4、
、
、
、Parameter
Parameter
Parameter
ParameterSetting
Sett ing
Setting
Setting..................................................................................................................................................30
4.1
4.1
4.1
4.1Web
Web
W eb
WebPage
Pag e
Page
PageConfiguration
Con figuration
Configuration
Configuration..................................................................................................................................30
4.2
4.2
4.2
4.2AT+
AT+
AT+
A T+Commands
Com mands
Commands
CommandsConfiguration
Con figuration
Configuration
Configuration........................................................................................................................39
Appendix
Appendix
Appendix
AppendixA:
A:
A:
A :Contact
Con tact
Contact
ContactInformation
Inf ormation
Information
Information...........................................................................................................................61
Appendix
Appendix
Appendix
AppendixB:
B:
B:
B:Disclaimer
D is claimer
Disclaimer
Disclaimer.................................................................................................................................................61
Appendix
Appendix
Appendix
AppendixC:
C:
C:
C :Update
Upd ate
Update
UpdateHistory
His tory
History
History.........................................................................................................................................61

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1111、、、、Module Module Module ModuleOverview Overview Overview Overview
1.1 1.1 1.1 1.1Module Module Module ModuleOverview Overview Overview Overview
USR-C322isahigh-performancemoduleoftheserieswifimoduleC32.Themoduleisa
low-power802.11b/g/nmodulesthatdesignforachievingtheapplicationoftheembedded
system,wirelessnetworkcommunication.Throughthemodule,thecustomercansetaphysical
deviceconnectedtoawifinetwork,soastorealizethecontrolandmanagementoftheInternet
ofiot.
ThehardwareofmoduleintegrateMAC,basebandchip,rftransceiverunit,aswellasthe
poweramplifier;AdoptingCC3200chipofTIcompany,thekernelofindustrial-gradeARM
architecture(M4kernel,runningfrequencyof80MHZ.Theinternalultra-lowpoweroperation
mechanism,canruneffectivelylow-powermodule;SupportWiFiprotocolandTCP/IPprotocol,
theuseronlyneedssimpleconfiguration,canachievethefunctionofUARTdevicesconnected
totheInternet.
Modulesize:18.22mm*26.65mm*2.8mmSMTassembly
Thebasicfunctionofthemoduleisdescribedbelow:
CanworkinAPmodeforotherWIFIdevicesaccesscommunication,canalsoworkin
theSTAmode,accesstothewirelessroutertorealizecommunication
WithSocketcommunicationlinks,canbesettoTCP/UDPtrans,HTTPDClient,WEB
sockets,SSLClientcommunication.TCP/UDPtranscansupportTCPServer
、
TCP
Client、UDPServer、UDPClient.
ModulesupportsUARTtranslate,canuseATcommandstoarbitraryswitching.
1.2 1.2 1.2 1.2Characteristics Characteristics Characteristics Characteristicsof of of ofModule Module Module Module
Support[email protected]GHz802.11b/g/nwirelessstandards
BasedonARMCortex-M4kernelrunningfrequencyof80MHZ

SupportWEP、WPA/WPA2securitymode
SupportAP/STAworkingmode
SupportSimplelink/usrlinkNetworkingconfiguration
Supportcustomwebfunction
FullyintegratedserialportturnwirelessTCP/UDPtransmissionfunction,therateofserial
portupto3Mbps
Supports485transcontrol
Supporttwouartandthreesocketcommunication
SupportPC116bytesencryptionwhenworkintransmode
SupporttheHTTPDClientfunction
Supportwebsocketfunction
SupportSSLClientfunction

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Searchinlocalareanetwork(LAN)andwirelessparameterssettingfunction
SupportTCP/UDPClientregisteredpacketmechanism
SupportsimilarRFC2217automaticbaudrateadaptationfunction
SupportAT+simpleinstructionsetconfiguration
Single3.3Vpowersupply
Ultralowpowermode,supportdeepdormancy
Minisize:18.22mm*26.65mm*2.8mmSMT

FCC/CECertificated

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1.3
1.3
1.3
1.3functional
fun ctional
functional
functionalblock
blo ck
block
blockdiagram
diag ram
diagram
diagram
UART
1
SOCKA
TCP / UDP
Trans
Httpd Client
GET / POST
WEB Socket
TCP Server
TCP Client
UDP Server
UDP Client
PC 1
Encrypt
/ decrypt
SOCKB
TCP / UDP
Trans
TCP Client
UDP Server
UDP Client
SOCKA 1
TCP / UDP
Trans
Httpd Client
GET / POST
SSL Client
PC 1
Encrypt
/ decrypt
TCP Client
UDP Server
UDP Client
WIFI
UART
AT
Command
Trans Mode
UART
0
Net
AT
Command
1.4
1.4
1.4
1.4Product
Pro duct
Product
ProductFeature
Featur e
Feature
Feature
Moduleparameters
classify parameter value

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WirelessPara
meter
CertificationFCC/CE
WlanStandard802.11b/g/n
TransmitPower
17.0dBm@1DSSS
17.25dBm@11CCK
13.5dBm@54OFDM
Receive
Sensitivity
–94.7dBm@1DSSS
–87.0dBm@11DSSS
–73.0dBm@54OFDM
Antenna
Internal:On-boardantenna
Hardware
DataInterfaceUART300-3Mbps
WorkingVoltage3.0V~3.6V
WorkingCurrent
（voltage3.3V）
Continuetosend:~75mA
normalmode:average:~18mA，top:200mA
Intheweb:3.5mA
Standby:lowest25uA
Working
Temperature
-40℃-85℃
Storage
Temperature
-45℃-125℃
Size18.22mm*26.65mm*2.8mm
FootprintSMT
Software
Wireless
NetworkType
AP/STA
SecurityRegimeWEP/WPA-PSK/WPA2-PSK
EncryptionTypeTKIP,AES,TKIP/AES
Networking
Protocol
IPv4,TCP/UDP
User
Configuration
AT+instructionset
Web
1. 1. 1. 1.5 555Application Application Application ApplicationArea Area Area Area
CloudConnected
HomeAutomation
HouseholdAppliances
AccessControl
SecurityandProtectionSystem
SmartEnergy
IndustrialControl
IntelligentElectricalOutletBox/InstrumentMeasurement
IPNetworkSensorNodes

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WirelessPrinter

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2
2
2
2、
、
、
、Hardware
Hard ware
Hardware
HardwareDescription
Descrip tion
Description
Description
2.1
2.1
2.1
2.1Pin
Pin
Pi n
PinDefinitions
Defin itions
Definitions
Definitions
Themodulepin
PinNetNameFunctionalDescription
1GNDGND
2GPIOGeneralGPIO
3GPIOGeneralGPIO
4nResetModuleresetpin,lowleveleffectively
5SOP2Startthechoice,defaultNC
6SOP1Startthechoice,defaultNC
7SOP0Startthechoice,defaultNC
8ANADC-DCTheRFpoweroutputpin,hungup
9NCNC
10NCNC
11GNDGND
12GNDGND
13VBT_CCPowerinputpin,pleaseconnect+3.3V
14VDD_ANA2RFPowerinputpin,pleaseconnect+3.3V

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15GPIOGeneralGPIO
16NCNC
17GNDGND
18GPIOGeneralGPIO
19UARTTXUARTTXformodule
20UARTRXUARTRXformodule
21nReload
Modulefactorydefaultpin,lowleveleffectively，simplelink
start
22nReady
Workinstructionspinofmodule,loweffective,connectan
externalLED
23nLink
WiFilinkpinofmodule,loweffective,connectanexternal
LED
24UARTCTSAserialportflowcontrolpinCTS
25UARTRTSAserialportflowcontrolpinRTS
26GPIOGeneralGPIO
27GPIOGeneralGPIO
28GNDGND
29GNDGND
30UART1TXUARTTXformodule
31UART1RXUARTRXformodule
32GPIOGeneralGPIO
33GPIOGeneralGPIO
34GPIOGeneralGPIO
35GPIOGeneralGPIO
36GPIOGeneralGPIO
37GPIOGeneralGPIO
38GPIOGeneralGPIO
39NCNC
40NCNC
41GPIOGeneralGPIO
42NCNC
43NCNC
44GNDGND
2.2 2.2 2.2 2.2Antenna Antenna Antenna AntennaShows Shows Shows Shows

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InternalAntenna
2.3 2.3 2.3 2.3Size Size Size Sizeand and and andLayout Layout Layout LayoutRecommendations Recommendations Recommendations Recommendations
•SuggestPCBsize:youcandownloadthePCBfootprintfromourhomepage.
Clothplatespecification:
1)InternalAntenna
Customerstousetheinternalantenna,theneedtoabidebythefollowing
considerationsandinternalantennamoduleplacedgeneralrules:

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Ontheuser'sPCB,andgreyshadedareaabovethecorrespondingareacannotbe
placedcomponentsandGND.
Antennasawayfromthemetal,atleastdistancewithhighcomponentsaround
morethan10mm;
Antennapartcannotbemetalshell,plasticshellneedatleastmorethan10mm
awayfromtheantenna;
Itissuggestedthatmoduleisplacedinthefollowingareasoftheuser'sboardasfar
aspossible,toreducetheinfluenceoftheantennaandwirelesssignal,andatthesame
time,pleaseconsultsomeonetechnicalsupportstafftoassisttheplacementof
modulesandrelatedareasoftheLayoutdesign.
2.4 2.4 2.4 2.4The The The TheHardware Hardware Hardware HardwareCircuit Circuit Circuit CircuitDesign Design Design DesignReference Reference Reference Reference
Thehardwaredesignconsiderations:
Needtoaddmorethan200ufcapacitancemodulepowersupplypin.
SOP0、SOP1、SOP2noconnect.
Reset、Reloadneedtopickuponthe4.7Kresistor.
nLink,nReadyEffectiveforlowleveloutput.
SerialportRXD,TXDneedtopickuponthe10Kresistor.

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3
3
3
3、
、
、
、Product
Pro duct
Product
ProductFunction
Fun ction
Function
Function
3.1
3.1
3.1
3.1Wireless
Wir eless
Wireless
WirelessNetwork
Netwo rk
Network
NetworkMode
Mod e
Mode
Mode
TherearetwokindsofwirelessmoduleWIFIworkingmode:the STA and AP, can
provideuserswithflexiblenetworkmodeandthenetworktopologymethod.
<Nounsthat>
AP:Thewirelessaccesspoint,isthecenterofawirelessnetworknode.Commonly
usedwirelessrouterisan AP, otherwirelessterminalcanbeinterconnectedbyAP
STA:wirelesssite,isawirelessnetworkterminal.Suchasnotebookcomputer,PDA,
etc.
3.
3.
3.
3.1
1
1
1.1
.1
.1
. 1Module
Mod ule
Module
ModuleAs
As
As
A sa
a
a
aSTA
STA
S TA
STA
Moduleasthe STA isoneofthemostcommonlyusednetworkmode,andiscomposed
ofarouterAPandmanySTA,thefollowingfigure.ItscharacteristicisAPinacentral
position,communicationbetweenthe STA forwardby AP.
3.1.2
3.1.2
3.1.2
3.1.2Module
Mod ule
Module
ModuleAs
As
As
A sa
a
a
aAP
AP
AP
A P
ModulesasAPmode,canachievephone/PAD/computerwithoutanyconfiguration,fast
accessmodulefordatatransmission.Inaddition,youcanloginmoduleinternalwebpage
tosetparameters

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<
<
<
<note
not e
note
note>
>
>
>:moduleinAPmode,cansupportonly1 STA accessdevices.
3.
3.
3.
3.1
1
1
1.3
.3
.3
. 3Encryption
Enc ryption
Encryption
EncryptionType
Typ e
Type
Type
Encryptionisscramblingtomessagedata,ensurethesecurityofdatatransmission,
increasethesecurityofcommunication.Supportmultiplewirelessnetworkencryption
methods,including:
WEP
WPA-PSK/TKIP
WPA-PSK/AES
WPA2-PSK/TKIP
WPA2-PSK/AES
3.2
3.2
3.2
3.2Work
Wor k
Work
WorkMode
Mod e
Mode
Mode
Moduleconsistsoftwoworkmodes:Sockettransmodeandcommandmode



Socket
Socket
Socket
SocketTran
Tra n
Tran
TranMode
Mod e
Mode
Mode
Inthismode,themodulerealizestheUARTandtransparenttransmissionbetween
network,realizecommonserialdatatransferbetweendevicesandnetworkequipment.



Command
Command
Command
CommandMode
Mod e
Mode
Mode
Inthismode,theusercanthroughtheATcommandtoUARTmoduleandquery
andnetworkparametersSettings.WhenusingtheAT+ENTMexitcommandmode,
thedefaultbacktotranslatemode.
3.
3.
3.
3.2
2
2
2.1
.1
.1
. 1Socket
Soc ket
Socket
SocketTrans
Tra ns
Trans
TransMode
Mod e
Mode
Mode
1.
1.
1.
1.Socket
Soc ket
Socket
SocketTrans
Tra ns
Trans
TransMode
Mod e
Mode
ModeD
D
D
Description
esc ription
escription
escription
USR-C322cansupportserialmodes,include:TCP/UDPTrans,HttpdClient,SSL
Client,WEBSocket.
1.1
1.1
1.1
1.1TCP/UDP
TCP /UDP
TCP/UDP
TCP/UDPTrans
Tra ns
Trans
Trans
UARTinterfacecantransparenttransmissionmodehastheadvantageofUART
interfaceandnetworkcommunicationoftheplugandplay,whichreducethecomplexityof
theusertoagreatextent.Modulestoworkinatransparenttransmissionmode,theusers
onlyneedtoconfigurethenecessaryparameters,UARTinterfaceandnetwork
communicationcanberealized.Afterpoweron,moduleautomaticallyconnectedtothe
wirelessnetworkandserverconfigured.
Transparenttransmissionmodeisfullycompatiblewithyourownsoftwareplatform,
reducingtheworkloadofintegrationofwirelessdatatransmissionsoftware
development.PC1encryptioncanbeenableintransmode.Thedatarecivedfromuart0willbe
encriptedbyPC1thenuploadedtotheSocket.Thedatarecivedfromsocketwillbedecriptedthensend
thedatathroughserialport.
Usersneedtopresetparametersusuallyinclude:
Wirelessnetworkparameters
SSID
securitymode

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secretkey
TCP/UDPparameter
protel
connectiontype
destinationport
destinationaddress
UARTparameter
Baudrate
databits
stopbit
paritybit
Hardwareflowcontrol
Note:
Note:
Note:
Note:About
Abo ut
About
AboutPC1
PC1
P C1
PC1encryption
enc ryption
encryption
encryptionmethod
meth od
method
method,
,
,
,please
ple ase
please
pleaserefer
refe r
refer
referto
to
to
tothe
the
th e
thewebsite
web site
website
websiteinformation
inf ormation
information
information"USR-C322
"US R-C322
"USR-C322
"USR-C322PC1
PC1
P C1
PC1Encrypt
Enc rypt
Encrypt
Encrypt
in
in
in
inTrans
Tra ns
Trans
TransMode
Mod e
Mode
ModeUser
Use r
User
UserManual
Man ual
Manual
ManualV1.0".
V1. 0".
V1.0".
V1.0".
1.2
1.2
1.2
1.2Httpd
Htt pd
Httpd
HttpdClient
Cli ent
Client
Clientmode
mod e
mode
mode
HttpdClientmodeispackagedserialdatapacketsintotheHTTPprotocolpacketsand
senttotheserver,theserverreturneddataviaaserialportprinted.SupportPOST,GET
mode,UART0,UART1supportthismode.
1.3
1.3
1.3
1.3SSL
SSL
S SL
SSLClient
Cli ent
Client
Clientmode
mod e
mode
mode
SSLcommunicationisencryptedsecuritypassthroughcommunication,supportthe
TCPClientmode.
Encryptiontypessupported:
SSLV3
TLSV1
TLSV1_1
TLSV1_2
SSLv3_TLSV1_2
DLSV1
Theencryptionalgorithmsupport:
SSL_RSA_WITH_RC4_128_SHA
SSL_RSA_WITH_RC4_128_MD5
TLS_RSA_WITH_AES_256_CBC_SHA
TLS_DHE_RSA_WITH_AES_256_CBC_SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
TLS_ECDHE_RSA_WITH_RC4_128_SHA
SECURE_DEFAULT
SupportencryptioncertificateSettings(referencewirelessupgradesoftwareencryption
certificateburningmethod).OnlyUART1supportthispattern.
Note:
Note:
Note:
Note:About
Abo ut
About
AboutSSL
SSL
S SL
SSLClient
Cli ent
Client
Client,
,
,
,please
ple ase
please
pleaserefer
ref er
refer
referto
to
to
t othe
the
t he
thewebsite
web site
website
websiteinformation
inf ormation
information
information"USR-C322
"US R-C322
"USR-C322
"USR-C322SSL
SSL
S SL
SSL
Client
Client
Client
ClientUser
Use r
User
UserManual
Man ual
Manual
ManualV1.0".
V1. 0".
V1.0".
V1.0".
1.4
1.4
1.4
1.4WEB
WEB
W EB
WEBsocket
soc ket
socket
socketmode
mod e
mode
mode

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Supportwebpagewebsocketpassthroughmoduleasthewebserver,port8000,
maximumfourclientconnection.Canloginmodulebuilt-intestpage.OnlyUART0support
thispattern.
Note:
Note:
Note:
Note:About
Abo ut
About
AboutWEB
WEB
W EB
WEBSocket
Soc ket
Socket
Socketfunction
fun ction
function
function,
,
,
,please
ple ase
please
pleaserefer
ref er
refer
referto
to
to
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thewebsite
web site
website
websiteinformation
inf ormation
information
information
"USR-C322
"USR-C322
"USR-C322
"USR-C322WEB
WEB
W EB
WEBSocket
Soc ket
Socket
SocketUser
Use r
User
UserManual
Man ual
Manual
ManualV1.0".
V1. 0".
V1.0".
V1.0".
2.
2.
2.
2.UART
UAR T
UART
UARTFrame
Fra me
Frame
FrameScheme
Sch eme
Scheme
Scheme
ModuleinthereceivingUARTdata,willcontinuetocheckthetimeintervaloftwo
adjacentbytes.Ifthetimeintervalisgreaterthanthesetpackingtime(default5ms,canbe
setupbythe AT +UARTTE),arguesthattheendofaframe,orhasbeenreceivingdata,in
commandmodeisgreaterthan1kbytesarediscardedthereceiveddata,intranslatemode
isgreaterthan1kbytesaresentpacking.
3.
3.
3.
3.2
2
2
2.2
.2
.2
. 2Command
Com mand
Command
CommandMode
Mod e
Mode
Mode
Incommandmode,themodulewillnolongerworktotranslate,UARTport AT thistime
forreceivingthe AT command,theusercanthroughUARTporttosend AT commandsto
module,UARTforqueryingandsettingmodule,networkandotherrelatedparameters.As
longasthereisaUARTportintothe AT commandmode,theotherUARTportalsoisinthe
AT commandmode.
3.3
3.3
3.3
3.3Socket
Socket
So cket
SocketCommunication
Commu nication
Communication
Communication
3.3.1
3.3.1
3.3.1
3.3.1UART0
UAR T0
UART0
UART0Socket
Soc ket
Socket
Socket
UART0hasthefollowmode:TCP/UDPTrans,HttpdClient,Websocketcommunication.

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UART
1
SOCKA
TCP / UDP
Trans
Httpd Client
GET / POST
WEB Socket
TCP Server
TCP Client
UDP Server
UDP Client
PC 1
Encrypt
/D ecrypt
SOCKB
TCP / UDP
Trans
TCP Client
UDP Server
UDP Client
SOCKA 1
TCP / UDP
Trans
Httpd Client
GET / POST
SSL Client
PC 1
Encrypt
/ decrypt
TCP Client
UDP Server
UDP Client
WIFI
UART
AT
Command
Trans Mode
UART
0
Net
AT
Command
1)TCP/UDP
1)TCP/UDP
1)TCP/UDP
1)TCP/UDPTrans
Tra ns
Trans
TransMode
Mod e
Mode
Mode
InTCP/UDPTransModeUART0hastwosocket(socka,sockb)connection,thedata
writingtoUART0willbeautomaticallysenttothetwosockets.Thedatarecivedfrom
thetwosocketswillbesentouttheUARTinterface.
Sockasupport:
TCPServer
TCPClient

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UDPServer
UDPClient
Sockbsupport:
TCPClient
UDPServer
UDPClient
YoucansetthemodethroughATcommand(AT+AOCKA,AT+SOCKB)orthrougha
webset.
WhensetTCPServerSocket,itcansupportuptothreeTCPClient
connection.Whenthefourthclientconnected,thetheearliestconnectionwillbe
disconnected.InamultipleTCPlinkconnectionmode,fromtheTCPtransportdatawill
beforwardedtothemonebyoneontheUARTinterface.ComefromtheUART
interfacedatawillbecopiedintoamore,ineveryTCPforwardingalink.Specificdata
flowdiagramshownbelow:
WhentheSocketsettoUDPServer,ifaserialportreceivesdatafirst,module
sendsthedatatothealreadyset IP, port (AT +SOCKAset),iftheUDPServerreceives
data,datasourceaddress,themodulewillrememberafteraserialport,afterreceiptof
thedatamodulewillbetransmittedtotheaddressdata.
WhenthemoduleissettotheUDPClient,themoduleonlysenddatatotheIPand
port,andonlyreceivedatafromtheIPandportaddress (AT +SOCKASettings),the
datafromotheraddressorportisnotforwardedtotheUART.
Whenthemoduleissettotcporudpclientmode.Registpacketcanbeadd.The
registcanbeMAC,ID,customerpacket(32bytes).WheninTCPClientmodebagscan
besettoconnectforthefirsttimesendoraddbeforeeachpacket.InUDPClientmode
registpacketwillbeaddineachpacketdata.
PC1encryptioncanbeenableintransmode.Thedatarecivedfromuart0willbe
encriptedbyPC1thenuploadedtotheSocket.Thedatarecivedfromsocketwillbe
decriptedthensendthedatathroughserialport.WhenenablePC1encryption,thetime

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willincreasesfromuarttosocketorfromsockettouart.Inordertoreducelose
data,youshouldincreasethetimeintervalbetweensendingpackets.PC1encryption
algorithm,pleaserefertothe"USR-C322PC1encryptionintransmodeinstructions".
2)
2)
2)
2)Httpd
Htt pd
Httpd
HttpdClient
Cli ent
Client
Clientmode
mod e
mode
mode
HttpdClientpatternispackagedserialdatapacketsintotheHTTPprotocolpackets,
supportPOST,GETmode,UART0,UART1supportthispattern,specificpackageisas
follows:
POST：
POST“customerURL”HTTP/1.1<CR><LF>
Connection:close<CR><LF>
User_Agent:Mozilla/4.0<CR><LF>
Content-Length:“lengthofuartdata”<CR><LF>
“customerhead（htp_head）”
Host:“serveraddress”:“serverport”<CR><LF><CR><LF>
“datafromuart”
GET：
GET“datafromuart”HTTP/1.1<CR><LF>
Connection:close<CR><LF>
User_Agent:Mozilla/4.0<CR><LF>
“customerhead（htp_head）”
Host:“serveraddress”:“serverport”<CR><LF><CR><LF>
Relatedtothe AT commandset:
GET/POSTMode:AT+HTPTP
customerURL:AT+HTPURL
customerhead（htp_head）:AT+HTPHEAD
serveraddress:serverport:AT+HTPSV
3)
3)
3)
3)WEBSocket
WEB Socket
WEBSocket
WEBSocketFunction
Fun ction
Function
Function
USR-C322supportswebsockettransfromwebpagetouart.Themoduleisasa
webserver,port8000.ThemoduleonlysupportWebsocketASCIIpassthrough.The
websocketservercansupportonlyfourclienttobeconnected.Whenafifthclient
connecttotheserver,thefirstclientwillbeshutdownfromtheserver.Website
sourcecodeisopen,theusercanmodifywebpagerealizetheirspecialneeds,
upgradethecustomwebpagepleaserefertothecustomfunctiondescription.Only
UART0supportthispattern.
3.3.2
3.3.2
3.3.2
3.3.2UART1
UAR T1
UART1
UART1Socket
Soc ket
Socket
Socket
UART1hasthefollowmode:TCP/UDPTrans,HttpdClient,SSLClientcommunication.