ST X-NUCLEO-IDW04A1 Quick Start Manual

Quick Start Guide

Wi-Fi expansion board based on SPWF04SA module for STM32 Nucleo
(X-NUCLEO-IDW04A1)

Version 1.0 (March 3, 2017)

Quick Start Guide Contents

2

X-NUCLEO-IDW04A1: STM32 Nucleo Wi-Fi expansion board
Hardware and Software overview

Setup & Demo Examples
Documents & Related Resources

STM32 Open Development Environment: Overview

Wi-Fi expansion board

Hardware overview

3

STM32

X-NUCLEO-IDW04A1 Hardware description

• The X-NUCLEO-IDW04A1 is a Wi-Fi evaluation board

based on the SPWF04SA module, which expand the
STM32 Nucleo boards. The CE, IC and FCC certified
SPWF04SA 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

SPWF04SA module communicates with the STM32 Nucleo

developer board host microcontroller though an USART
link. The SPI interface can also be used for the same
purpose.

Main Features

• The X-NUCLEO-IDW04A1 hosts FCC, IC and CE certified

SPWF04SA module (FCC ID: S9NSPWFS04, IC ID:
8976C-SPWFS04 and ETSI compliant)

• Compatible with STM32 Nucleo boards

• Equipped both with Arduino UNO R3 connectors and ST

morpho connector

• Scalable solution; it can cascade multiple boards for larger

systems

• Free development firmware library and examples,

compatible with STM32 Cube

Wi-Fi transciever Chip Antenna

Arduino UNO R3 connector

Key product on board

SPWF04SA: ST Stand-alone and Serial-to-Wi-Fi

Modules, 802.11 b/g/n compliant

Latest info available at www.st.com

X-NUCLEO-IDW04A1

ST morpho connector

Wi-Fi expansion board

Certification

Radio certification

• 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-IDW04A1 contains the FCC certified SPWF04SA module (FCC ID: S9NSPWFS04).

• 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-IDW04A1 contains the FCC certified SPWF04SA module (IC ID: 8976C-SPWFS04)

• Formal notices required by the ETSI (CE). This module complies with the following European EMI/EMC and safety directives and

standards:

• EN 300 328 V1.9.1:2015

• EN 301 489-1 V1.9.2:2011 + EN 301 489-17 V2.2.1:2012 + EN 301 489-1 V1.8.1:2008

• EN 60950-1:2006 + A11:2009 + A1:2010 + A12:2011 + A2:2013

• EN 62479:2010

4

Latest software available at www.st.com

X-CUBE-WIFI1

Wi-Fi expansion board

Software overview

5

X-CUBE-WIFI1 software description

• X-CUBE-WIFI1 is an expansion software package

for STM32Cube. The software runs on STM32 and
it can be used for building Wi-Fi applications using
the SPWF01SA or SPWF04SA module. It is built
on top of STM32Cube software technology that
eases portability across different STM32
microcontrollers.

• It is compatible with the NUCLEO-L476RG and

the NUCLEO-F401RE when connected to one X­NUCLEO-IDW04A1. The X-CUBE-WIFI1 software
comes with examples of implementation.

Key features

• Complete middleware to build applications using

the Wi-Fi module SPWF01SA or SPWF04SA

• Easy portability across different MCU families

thanks to the STM32Cube

• Easy to use abstract APIs to configure and use

SPWF01SA or SPWF04SA

• Sample applications that the developer can use to

start experimenting with the code

• Free, user-friendly license terms

Overall system architecture

Quick Start Guide Contents

6

X-NUCLEO-IDW04A1: STM32 Nucleo Wi-Fi expansion board
Hardware and Software overview

Setup & Demo Examples
Documents & Related Resources

STM32 Open Development Environment: Overview

Setup & demo examples

HW prerequisites

7

• 1x Wi-Fi expansion board

(X-NUCLEO-IDW04A1)

• 1x STM32 Nucleo development board

(NUCLEO-L476RG or NUCLEO-F401RE)

• 1x USB type A to Mini-B USB cable

Tera Term

terminal running on PC

Wi-Fi RouterPC (*)

AP

Router with internet

connection

(*) Microsoft Windows 7 or 8, or above

Additional requirements:

X-NUCLEO-IDW04A1

NUCLEO-F401RE
NUCLEO-L476RG