ESPRESSIF SYSTEMS ESPWROOM02 Wi-Fi Internet of Things Module User Manual

ESPRESSIF SYSTEMS (SHANGHAI) PTE LTD Wi-Fi Internet of Things Module

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1. RF Exposure Info
2. User Manual

User Manual

ESP8266UserManual 

1 / 13Espressif SystemsJune 19, 2014

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.



[]CONFIDENTIAL

[]INTERNAL

[]PUBLIC



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.

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Tools..........................................................................................................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



Step2:selecttherightserialportnumberandopen



Step3:connect



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

Step4:downloadtheimagefile



Step5:selectanddownloadthebinfilewhichyouaregoingtoburnintothe

flash



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

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serialportandrepeatStep2andStep3.

Step7:selectanddownloadnextbinfilewhichyouaregoingtoburnintothe

flash,forexample,eagle.app.v6.irom0text.bin.



Note:thecorrespondingProgramAddressOffsetforeagle.app.v6.irom0text.bin

is0x40000.Pleaserefertobindirectorydescriptionsin"4.2DirectoryStructure".

Step8:closeserialport



Afterthedownloading,userscancheckandprintrelevantinformationwith

SecureCRT.

SetthejumperonthemotherboardasMTDO：0，GPIO0：1，GPIO2：1,thenit

willenteroperatingsmode.

Note:pleasedisconnectthepowerwhensettingthejumpers.



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3.2. ESP_FLASH_DOWNLOAD

Espressifalsoprovidesthetool"ESP_FLASH_DOWNLOAD"foruserstoburn

severalbinfilesaltogetheratonce,anddownloadseveralcomplied*.binfilesata

timeintotheSPIFlashontheESP8266motherboard.



“ESP_FLASH_DOWNLOAD”introduction：

（1） Bin‐SelectArea:Choosebinstoburn，andburnthemincorresponding

address.

（2） SPIFLASHCONFIG:Setconfigofspiflash.“CombineBin”mergesallbins

selectedabovetoone(target.bin).“Default”resettothedefaultconfig.

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（3） MacAddress：MacaddressofESP8266.



AlsosetthejumperonthemotherboardasMTDO：0，GPIO0：0，GPIO2：1,then

itwillenterdownloadmode.Stepsareasfollows:

(1) See the red boxes in the picture above, select the bin file to be burned ->fill in the

path ->check burning options.

(2) Set COM port and baud rate.

(3) Click "START" to start downloading.

(4) After the downloading, disconnect the power for the motherboard, and change the

jumper into operation mode. Re-connect the power for operation. Set the jumper

on the motherboard as MTDO：0，GPIO0：1，GPIO2：1 for operating mode.

Note: please disconnect the power when setting the jumper.



ESPRESSIF SYSTEMS ESPWROOM02 Wi-Fi Internet of Things Module User Manual

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