Espressif Systems ESP-WROOM-02 User manual

ESP8266UserManual 
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ESP-WROOM-02 WiFiModule
USER MANUAL 
FOR OEM OR INTEGRATORS ONLY: This module is limited to OEM
installation only and must not be sold to end-users.
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[]CONFIDENTIAL
[]INTERNAL
[]PUBLIC
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Disclaimer and Copyright Notice
Information in this document, including URL references, is subject to change without
notice.
THIS DOCUMENT IS PROVIDED "AS IS" WITH NO WARRANTIES
WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY,
NONINFRINGEMENT, FITNESS FOR ANY PARTICULAR PURPOSE, OR ANY
WARRANTY OTHERWISE ARISING OUT OF ANY PROPOSAL,
SPECIFICATION OR SAMPLE. All liability, including liability for infringement of
any proprietary rights, relating to use of information in this document is disclaimed.
No licenses express or implied, by estoppel or otherwise, to any intellectual property
rights are granted herein.
The Wi-Fi Alliance Member Logo is a trademark of the Wi-Fi Alliance.
All trade names, trademarks and registered trademarks mentioned in this document
are property of their respective owners, and are hereby acknowledged.
Copyright © 2013 Espressif Systems Inc. All rights reserved.
Caution:Changesormodificationsnotexpresslyapprovedbythemanufacturercouldvoidthe
user’sauthoritytooperatetheequipment.

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Thisdevicecomplieswithpart15oftheFCCRules.Operationissubjecttothefollowingtwo
conditions:(1)Thisdevicemaynotcauseharmfulinterference,and(2)thisdevicemustaccept
anyinterferencereceived,includinginterferencethatmaycauseundesiredoperation.
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2. TableofContents
2.TableofContents.......................................................................................................3
1. Foreword....................................................................................................................4
2. FCC RF exposure requirements.................................................................................5
2.1. StandardsandRegulatoryCompliance................................................................5
2.1.1. Standardsandcertification..............................................................................5
2.1.2. FCCcertificationrequirements........................................................................5
2.1.3. FCCRFexposurerequirements........................................................................7
3.DownloadTool s..........................................................................................................9
3.1. XTCOM_UTIL........................................................................................................9
3.2. ESP_FLASH_DOWNLOAD...................................................................................12
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1. Foreword
ThismanualmainlyintroduceshowtouseESP8266‐basedSDKforInternetof
Things,includingvirtualmachineinstallation,developmenttoolusage,SDKsoftware
developmentkitetc.
ThismoduleislimitedtoOEMinstallationonlyandmustnotbesoldto
end‐users.
OEMintegratorsmustbeinstructedtoensurethattheend‐userhasnomanual
instructionstoremoveorinstallthedevice.
Theend‐usercannotremoveorinstallthismoduletoanyotherdevices.
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2. FCC RF exposure requirements
2.1. Standards and Regulatory Compliance
2.1.1. Standards and certification
TheEUTconformstothefollowingstandardsandcertificationrequirements:
802.11b/g/n
FCC
❒47CFRPart1‐RFradiationexposurelimits
❒47CFRPart2‐Equipmentauthorization
❒47CFRPartC‐WIFI
2.1.2. FCC certification requirements
AccordingtothedefinitionofmobileandfixeddeviceisdescribedinPart
2.1091(b),thisdeviceisamobiledevice.
Andthefollowingconditionsmustbemet:
1.TheEUTisamobiledevice;maintainatleasta20cmseparationbetweenthe
EUTandtheuser’sbodyandmustnottransmitsimultaneouslywithanyother
antennaortransmitter.
2.Thedeviceisonlyforfixedoperationmode. (AClassIIChangewouldbe
requiredfornear‐bodyHostapplications.)
3.Alabelwiththefollowingstatementsmustbeattachedtothehostend
product:ThisdevicecontainsTxFCCID:2AC7Z‐ESP8266EX.
4.TocomplywithFCCregulationslimitingbothmaximumRFoutputpowerand
humanexposuretoRFradiation,maximumantennagain(includingcableloss)must
notexceed:
❒802.11bband<2.0dBi
❒802.11gband<2.0dBi
❒802.11nband<2.0dBi
5.Thismodulemustnottransmitsimultaneouslywithanyotherantennaor

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transmitter
6.Thehostendproductmustincludeausermanualthatclearlydefines
operatingrequirementsandconditionsthatmustbeobservedtoensurecompliance
withcurrentFCCRFexposureguidelines.
Forportabledevices,inadditiontotheconditions3through6describedabove,
aseparateapprovalisrequiredtosatisfytheSARrequirementsofFCCPart2.1093
Ifthedeviceisusedforotherequipmentthatseparateapprovalisrequiredfor
allotheroperatingconfigurations,includingportableconfigurationswithrespectto
2.1093anddifferentantennaconfigurations.
Forthisdevice,OEMintegratorsmustbeprovidedwithlabelinginstructionsof
finishedproducts.PleaserefertoKDB784748D01v08,section8.Page6/7lasttwo
paragraphs:
Acertifiedmodularhastheoptiontouseapermanentlyaffixedlabel,oran
electroniclabel.Forapermanentlyaffixedlabel,themodulemustbelabelledwith
anFCCID‐Section2.926(see2.2Certification(labellingrequirements)above).The
OEMmanualmustprovideclearinstructionsexplainingtotheOEMthelabelling
requirements,optionsandOEMusermanualinstructionsthatarerequired(seenext
paragraph).
Forahostusingacertifiedmodularwithastandardfixedlabel,if(1)themodule’
sFCCIDisnotvisiblewheninstalledinthehost,or(2)ifthehostismarketedsothat
endusersdonothavestraightforwardcommonlyusedmethodsforaccessto
removethemodulesothattheFCCIDofthemoduleisvisible;thenanadditional
permanentlabelreferringtotheenclosedmodule:“ContainsTransmitterModule
FCCID:2AC7Z‐ESPWROOM02”or“Contains FCC ID:2AC7Z-ESPWROOM02”
must be used.The host OEMusermanual must alsocontain clearinstructions on
howendusesers canfind and/oraccessthemoduleandtheFCCID.
Theusermanualorinstructionmanualforanintentionalorunintentional
radiatorshallcautiontheuserthatchangesormodificationsnotexpresslyapproved
bythepartyresponsibleforcompliancecouldvoidtheuser'sauthoritytooperate

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theequipment.Incaseswherethemanualisprovidedonlyinaformotherthan
paper,suchasonacomputerdiskorovertheInternet,theinformationrequiredby
thissectionmaybeincludedinthemanualinthatalternativeform,providedthe
usercanreasonablybeexpectedtohavethecapabilitytoaccessinformationinthat
form.
Thisdevicecomplieswithpart15oftheFCCRules.Operationissubjecttothe
followingtwoconditions:(1)Thisdevicemaynotcauseharmfulinterference,and(2)
thisdevicemustacceptanyinterferencereceived,includinginterferencethatmay
causeundesiredoperation.
Caution:Changesormodificationsnotexpresslyapprovedbythemanufacturer
couldvoidtheuser’sauthoritytooperatetheequipment.
2.1.3. FCC RF exposure requirements
1.Radiatedtransmitpowermustbeequaltoorlowerthanthatspecifiedinthe
FCCGrantofEquipmentAuthorizationforFCCID:2AC7Z‐ESPWROOM02.
2.TocomplywithFCCregulationslimitingbothmaximumRFoutputpowerand
humanexposuretoRFradiation,maximumantennagain(includingcableloss)must
notexceed:
❒802.11bband<2.0dBi
❒802.11gband<2.0dBi
❒802.11nband<2.0dBi
3.Thismodulemustnottransmitsimultaneouslywithanyotherantennaor
transmitter.
4.Toensurecompliancewithallnon‐transmitterfunctionsthehost
manufacturerisresponsibleforensuringcompliancewiththemodule(s)installed
andfullyoperational.Forexample,ifahostwaspreviouslyauthorizedasan
unintentionalradiatorundertheDeclarationofConformityprocedurewithouta
transmittercertifiedmoduleandamoduleisadded,thehostmanufactureris
responsibleforensuringthattheafterthemoduleisinstalledandoperationalthe
hostcontinuestobecompliantwiththePart15Bunintentionalradiator

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requirements.
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3. DownloadTools
3.1. XTCOM_UTIL
Double‐clicktheicon torunthedownloadtooltodownloadthe
compiled*.binfilesontotheSPIFlashontheESP8266motherboard.
SetthejumperonthemotherboardasMTDO：0，GPIO0：0，GPIO2：1,thenit
willenterdownloadmode.Stepsareasfollows:
Step1:setserialport
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Step2:selecttherightserialportnumberandopen
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Step3:connect
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Step4:downloadtheimagefile
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Step5:selectanddownloadthebinfilewhichyouaregoingtoburnintothe
flash
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Note:ProgramAddressOffsetvariesinaccordancewithbinfile.Forexample,the
correspondingProgramAddressOffsetforeagle.app.v6.flash.binis0x0000.Please
refertobindirectorydescriptionsin"4.2DirectoryStructure".
Step6:re‐connect
AftercompletionofStep5,re‐connectESP8266motherboardtopower.Close