11/4/2015
ESP8266ElectroDragon
ESP8266
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Contents
1Modulewiring
1.1ModulePinDescription
2SetupVerification
3Firsttimeuseguide
3.1Stepsandnote
3.2Sockettestrunningresult
3.3Note
4Documents
Modulewiring
Thepindefinitionof
Wi0701
useastandalone
battery,wifispot
ESP****shouldbe
abletobefoundby
cellphonewifi
UsewithaFTDI
FT232RLUSBTTL
board(onlyconnect
greenwireforflashing
mode)
Usewithanothertype
ofFTDIFT232RL
USBTTLboard
UseFT232RLcansupplyenoughpower,mustbegeniusICofcourse
Swaptheuartpinsifnodatashowuponthemonitor
Therearetwoledsontheboard,oneispowerled(RED),anotheroneisstatusLED(BLUE),when
powerup,pwrledkeepsonandstatusledwillblinkonce.
baudratemayworkat9600(seemsthelatestcorrectone),115200or57600
ModulePinDescription
Normalmode:Normalbootfromflash,normalworkingmode
Flashmode:Firmwareflashmode
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ESP8266ElectroDragon
Pin
Description
VCC,
GND*
powersupply,betteruseastandalone,andsharegroundwithuartport
TXD,
RXD**
uartinterface
RST
RestartonlowTTL
CH_PD
ChipselectonhighTTL,shouldbesetforbothmode
GPIO0
settolowTTLforflashmode
GPIO15
shouldbelowTTLonstart
GPIO2
shouldbehighTTLonstart
LEDs
Redkeepsconstantsontoshowthepowerstatus,andBlueformodulestatus,it'sflashing
oncewhenmoduleboot
SetupVerification
checktwoLEDSstatuswhenbootup,ifthisisnotworking,doublecheckyourwiringfirstthen
continue,don'tforgetCHPDtoVCC
checkifyourdevices(phone)canfindawifispotnamedlike"ESP_98529F"orsimilar,thelater
numberpartisthemacID,ifyoucanseethiswifispot,itmeansyourmodulebootupsucessfully
Don'tforgettoconnectGPIO15toGNDifyouareusingtheSMDmodel
Optional:swapRXandTXpinsifyoucannotgetATcommandsresponse
Optional:Tick"newline"optiononSSCOM32serialportmonitortool
Optional:Trybaudrate9600or115200normallyshouldbethesetwo,oldversionis115200
"ESP_990B15"isthe
modulewifispot
Seethefinal"ready"
whenbootup
successfully
Firsttimeuseguide
Stepsandnote
AT+RSTrestartthemodule,receivedsomestrangedata,and"ready"
AT+CWMODe=3changetheworkingmodeto3,AP+STA,onlyusethemostversatilemode3
(AT+RSTmaybenecessarywhenthisisdone.)
JoinRouter
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ESP8266ElectroDragon
AT+CWLAPsearchavailablewifispot
AT+CWJAP=youssid,passwordjoinmymercuryrouterspot
AT+CWJAP=?checkifconnectedsuccessfully,oruseAT+CWJAP?
TCPClient
AT+CIPMUX=1turnonmultipleconnection
AT+CIPSTART=4,"TCP","192,168.1.104",9999connecttoremoteTCPserver192.168.1.104
(thePC)
AT+CIPMODE=1optionallyenterintodatatransmissionmode
AT+CIPSEND=4,5senddataviachannel4,5byteslength(seesockettestresultbelow,only
"elect"received),linkwillbe"unlink"whennodatagothrough
TCPServer
AT+CIPSERVER=1,9999setupTCPserver,onport9999,1meansenable
AT+CIFSRcheckmoduleIPaddress
PCasaTCPclientconnecttomoduleusingsockettest,senddata
Sockettestrunningresult
Inthesockettest,donottickthe"secure"inTCPclient,itcausesunstable
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ESP8266ElectroDragon
Note
Usepowersourcethatcanprovidesufficientcurrent,betternotusingpowerfromUSBTTL
module
Modulewillautomaticallydisconnect"unlink"TCP/UDPwhennodatagothrough
Wifipasswordlengthmustbemorethan8bytes
Documents
SpecificationPDF(https://drive.google.com/file/d/0B_ctPy0pJuW6Y0FHcDlVY09Xdjg/view?
usp=sharing)
ESP8266Firmware
ESP8266SDK
ESP8266withArduino
ESP8266IC
Moredocumentsongoogledrive(https://drive.google.com/folderview?
id=0B3dUKfqzZnlwRXhBTmlhaTROTmM&usp=sharing)
ESP8266anotherwikipage(https://github.com/esp8266/esp8266wiki/wiki/Examples)
ESP8266IoTStandardexample
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Categories: Ethernet,Wifi ESP8266
Thispagewaslastmodifiedon9March2015,at15:57.
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