ST X-NUCLEO-IDW01M1 User manual

June 2016
DocID028561 Rev 3
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For further information contact your local STMicroelectronics sales
office
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X-NUCLEO-IDW01M1
Wi-Fi expansion board based on SPWF01SA module for STM32
Nucleo
Data brief
Features
X-NUCLEO-IDW01M1 hosts FCC, IC and
CE certified SPWF01SA module (FCC ID:
VRA-SG9011203, IC: 7420A-SG9011203
and ETSI compliant)
SPWF01SA module major characteristics:
low power IEEE 802.11 b/g/n
transceiver
integrated SMD antenna
STM32 ARM Cortex-M3, with 64 KB
RAM and 512KB FLASH memory
1 MByte extended flash for FW update
over the air (FOTA)
integrated protocol stacks: TCP/IP,
TLS/SSL
application layer functions: web server
supporting dynamic web pages, REST
API to get & post web content
WEP/WPA/WPA2 personal security
system modes: station, IBSS, and
miniAP
16 configurable GPIOs available
simple AT command set host interface
through UART
compatible with STM32 Nucleo boards
equipped both with ST morpho connector
and Arduino UNO R3 connectors
scalable solution; it can cascade multiple
boards for larger systems
free development firmware library and
examples, compatible with STM32Cube
RoHS compliant
Description
The X-NUCLEO-IDW01M1 is a Wi-Fi evaluation
board based on the SPWF01SA module, which
expands the STM32 Nucleo boards. The CE, IC
and FCC certified SPWF01SA module has an
embedded STM32 MCU, a low-power Wi-Fi b/g/n
SoC with integrated power amplifier and power
management and an SMD antenna. The
SPWF01SA module is also equipped with 1
MByte of external FLASH for firmware update
over-the-air (FOTA). The firmware features a
complete software IP stack to open up to 8
TCP/UDP sockets, as well as dynamic web
pages with SSI to interact with the module and a
REST API (get & post) for conveniently
transferring files to/from servers in the cloud. The
module can simultaneously behave as a socket
server and socket client. The firmware supports
secure sockets with TLS/SSL encryption,
ensuring secure end-to-end communications with
the cloud, with or without authentication. The
module operates as a client STA, IBSS, or
miniAP (with up to 5 client STAs). The X-
NUCLEO-IDW01M1 interfaces with the MCU on
the STM32 Nucleo board via the UART serial
port; the user can easily access the stack
functions using the AT command. X-NUCLEO-
IDW01M1 is compatible with both the ST morpho
and Arduino UNO R3 connector layout.

Radio certification
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1 Radio certification
1.1 Formal notices required by the U.S. Federal
Communications Commission (FCC)
Any changes or modifications to this equipment not expressly approved by
STMicroelectronics may cause harmful interference and void the user’s authority to operate
this equipment.
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 any interference that may cause undesired
operation.
This device uses, generates and radiates radio frequency energy. The radio frequency
energy produced by this device is well below the maximum exposure limit established by
the Federal Communications Commission (FCC).
The X-NUCLEO-IDW01M1 contains the FCC certified SPWF01SA module (FCC ID: VRA-
SG9011203).
1.2 Formal notices required by Industry Canada (IC)
English:
This device complies with Industry Canada license-exempt RSS standard(s). Operation is
subject to the following two conditions: (1) this device may not cause interference, and (2)
this device must accept any interference, including interference that may cause undesired
operation of the device.
French:
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils
radio exempts de licence. 'Exploitation est autorisée aux deux conditions suivantes : (1)
l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter
tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en
compromettre le fonctionnement.
The X-NUCLEO-IDW01M1 contains the IC certified SPWF01SA module (IC: 7420A-
SG9011203)
1.3 Formal notices required by the ETSI (CE)
This module complies with the following European EMI/EMC and safety directives and
standards:
ETSI EN 300 328 V1.8.1:2012
EN 301 489-1 V1.9.2:2011 + EN 301 489-17 V2.2.1:2009
EN 60950-1:2006 + A11:2009 + A1:2010 + A12:2011 + A2:2013
EN 62479:2010

X-NUCLEO-IDW01M1
Hardware Schematics
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2 Hardware Schematics
2.1 STM32 Nucleo connectors
The figure below details the STM32 Nucleo connectors both ST morpho and Arduino UNO
R3.
Figure 1: STM32 Nucleo connectors

Hardware Schematics
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2.2 SPWF01SA module
This section provides some information regarding the SPWF01SA Serial-to-Wi-Fi b/g/n
intelligent modules (order code: SPWF01SA.11). More detailed information can be found at
the www.st.com web site.
The main features of the SPWF01SA module are:
2.4 GHz IEEE 802.11 b/g/n transceiver
STM32 ARM Cortex-M3, with 64 KB RAM and 512KB Flash memory
1 MByte extended FLASH for FW update
Over the air (FOTA) only on SPWF01Sx.1y
Integrated TCP/IP protocol stack
8 Simultaneous TCP or UDP clients and 1 Socket server
1 TLS/SSL Socket client supporting up to TLS 1.2, including common encryption
algorithms: AES (128,256), hash (MD5, SHA-1, SHA-256) and public key
algorithms (RSA, ECC).
Web server supporting dynamic web pages
RESTful API to get & post web content
WEP/WPA/WPA2 personal security
System modes: station, IBSS, and miniAP
miniAP easily provisioned (SSID, PWD)
Industrial temperature range: -40 °C to 85 °C
SPWF01SA is a fully FCC/IC/CE certified module.
It is suitable for evaluating Wi-Fi connectivity in the following applications:
smart appliances
industrial control and data acquisition
home automation and security systems
Wireless sensors
cable replacement
medical equipment
machine-to-machine communication
Very small module footprint with easy to solder/inspect pin array

X-NUCLEO-IDW01M1
Hardware Schematics
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Figure 2: SPWF01SA module footprint
2.3 STM32 Nucleo connections
The X-NUCLEO-IDW01M1 expansion board is designed to be plugged directly on the
STM32 Nucleo board connectors. The X-NUCLEO-IDW01M1 is configured by default to be
compatible with the highest number of STM32 Nucleo boards possible. It may be also be
configured, via resistor placement, to use different I/O configurations in order to match
specific customer targets. Refer to the X-NUCLEO-IDW01M1 user manual for more
detailed information regarding the possible I/O configuration options.
Check to see if resistor R21 is present; if it is, please remove it as it may interfere with
JTAG debug.
2.4 EEPROM
The module has an embedded EEPROM used to host web pages and/or firmware over the
air (OTA) to remotely update the module firmware images.

Hardware Schematics
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2.5 Schematic diagram
Figure 3: X-NUCLEO-IDW01M1 board schematic

X-NUCLEO-IDW01M1
Revision history
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3 Revision history
Table 1: Document revision history
Date
Version
Changes
06-Nov-2015
1
Initial release.
23-Feb-2016
2
Updated cover page description.
23-Jun-2016
3
Updated board photo on the cover page.

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