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

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Date Submitted	2015-04-17 00:00:00
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ESP8266User Manual
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.
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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ESP8266User Manual
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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ESP8266User Manual
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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ESP8266User Manual
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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ESP8266User Manual
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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ESP8266User Manual
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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ESP8266User Manual
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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ESP8266User Manual
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.
13 / 13Espressif SystemsJune 19, 2014

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