ST X-NUCLEO-IDW01M1 User manual

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November 2015
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www.st.com
UM1975
User manual
Getting started with X-NUCLEO-IDW01M1 Wi-Fi expansion
board based on SPWF01SA module for STM32 Nucleo
Introduction
This document provides detailed hardware requirements and board connections for the X-NUCLEO-
IDW01M1 Wi-Fi board based on SPWF01SA Serial-to-Wi-Fi Modules, to allow expansion of the STM32
Nucleo boards. The SPWF01SA module is FCC (FCC ID: VRA-SG9011203), IC certified (IC: 7420A-
SG9011203) and CE certified and includes an STM32 MCU, a low-power 2.4 GHz IEEE 802.11 b/g/n
transceiver with integrated power amplifier and power management, and an SMD antenna.
The X-NUCLEO-IDW01M1 can be plugged onto STM32 Nucleo boards thanks to the ST morpho and
Arduino™ UNO R3 connectors, and the same connectors allow different expansion boards to be easily
stacked on the X-NUCLEO-IDW01M1 board so you can evaluate Wi-Fi connectivity with different
devices in several applications.
The expansion board has the following features:
Onboard SPWF01SA module (order code: SPWF01SA.11) based on the STM32 MCU and a low
power Wi-Fi b/g/n transceiver SoC
USART configurable connections
Jumpers to obtain the SPWF01SA module RESET and I/O board signals (user software
dependent)

Getting Started
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Figure 1: X-NUCLEO-IDW01M1 Wi-Fi expansion board based on SPWF01SA module

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Contents
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Contents
1Getting Started ................................................................................ 6
1.1 Hardware requirements.....................................................................6
1.2 System requirements ........................................................................7
1.3 Setting up the board..........................................................................7
2Hardware description...................................................................... 8
2.1 X-NUCLEO-IDW01M1 expansion board for STM32 Nucleo .............8
2.2 UART and GPIO connection options............................................... 10
2.3 Current measurement ..................................................................... 12
2.4 X-NUCLEO-IDW01M1 component placement details ..................... 12
3Component descriptions .............................................................. 13
3.1 SPWF01SA module ........................................................................ 13
3.2 User push-buttons and LED............................................................ 13
3.3 Radio certification............................................................................ 14
3.3.1 Formal notices required by the U.S. Federal Communications
Commission (FCC)........................................................................................... 14
3.3.2 Formal notices required by Industry Canada (IC) ............................ 14
3.3.3 Formal notices required by the ETSI (CE) ....................................... 14
4Board schematic and bill of materials ......................................... 15
4.1 STM32 Nucleo connections ............................................................ 15
4.2 Bill of materials................................................................................ 15
4.3 Schematic diagram .........................................................................18
4.4 Revision history............................................................................... 19

List of tables
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List of tables
Table 1: Interconnection between STM32 Nucleo board and X-NUCLEO-IDW01M1 (ST morpho
connector - CN7).........................................................................................................................................8
Table 2: Interconnection between STM32 Nucleo board and X-NUCLEO-IDW01M1 (ST morpho
connector - CN10).......................................................................................................................................9
Table 3: Interconnection between STM32 Nucleo board and X-NUCLEO-IDW01M1 (Arduino UNO R3
Connector CN6 - Power).............................................................................................................................9
Table 4: Interconnection between STM32 Nucleo board and X-NUCLEO-IDW01M1 (Arduino UNO R3
Connector CN8 - Analog) .........................................................................................................................10
Table 5: Interconnection between STM32 Nucleo board and X-NUCLEO-IDW01M1 through (Arduino
UNO R3 Connector CN5 - Digital) ............................................................................................................10
Table 6: Interconnection between STM32 Nucleo board and X-NUCLEO-IDW01M1 through (Arduino
UNO R3 Connectors CN9 - Digital) ..........................................................................................................10
Table 7: SPWF01SA module UART interface - (optional) with STM32 Nucleo board .............................11
Table 8: SPWF01SA details .....................................................................................................................13
Table 9: Push-buttons and LED functions ................................................................................................13
Table 10: Bill of materials (1 of 2) .............................................................................................................15
Table 11: Bill of materials (2 of 2) .............................................................................................................16
Table 12: Document revision history ........................................................................................................19

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List of figures
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List of figures
Figure 1: X-NUCLEO-IDW01M1 Wi-Fi expansion board based on SPWF01SA module ..........................2
Figure 2: X-NUCLEO-IDW01M1 plugged with STM32 Nucleo board ........................................................6
Figure 3: X-NUCLEO-IDW01M1 component placement details...............................................................12
Figure 4: X-NUCLEO-IDW01M1 board schematic ...................................................................................18

Getting Started
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1 Getting Started
This section describes the hardware requirements for the X-NUCLEO-IDW01M1 expansion
board.
1.1 Hardware requirements
The X-NUCLEO-IDW01M1 is an expansion board for the STM32 Nucleo boards. To
function correctly, the X-NUCLEO-IDW01M1 must be plugged to the STM32 Nucleo board
through the ST morpho or ARDUINO UNO R3 connectors as shown in the figure below.
Information on STM32 Nucleo is available on ST website at http://www.st.com/stm32nucleo
Figure 2: X-NUCLEO-IDW01M1 plugged with STM32 Nucleo board
The interconnection between the STM32 Nucleo board and the X-NUCLEO-IDW01M1 is
designed to work with any STM32 Nucleo board, even though complete testing was
focused on the NUCLEO-L053R8 hosting the ultra-low power STM32L053R8T6, the
NUCLEO-F401RE hosting the dynamic efficiency STM32F401RET6 and the NUCLEO-
F103RB hosting the Mainstream Performance line STM32F103RBT6.

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1.3 System requirements
Using the STM32 Nucleo boards with the X-NUCLEO-IDW01M1 expansion board requires
the following software and hardware:
Windows PC (XP, Vista, 7, 8) to install the firmware package
USB type A to Mini-B USB cable to connect the STM32 Nucleo board to the PC
Installation of the board firmware package (order code: X-CUBE-WIFI1) and the Wi-Fi
graphical user interface utility on the user PC requires the following:
128 MB of RAM
40 MB of hard disk space
The X-CUBE-WIFI1 firmware and relative documentation are available on www.st.com
1.4 Setting up the board
To set up the board:
1. Ensure that a jumper on the JP3 (position 1-2) connector is connected. This jumper
provides the RESET signal to the SPWF01SA module on the board.
2. Ensure that a jumper on the JP4 (position 1-2) connector is connected. This jumper
provides the 2.5 V internal power supply to the GPIO6_ADC0 module signal.
3. Plug the X-NUCLEO-IDW01M1 on the STM32 Nucleo board, as shown in Figure 2:
"X-NUCLEO-IDW01M1 plugged with STM32 Nucleo board"
4. Power the STM32 Nucleo board through the Mini-B USB cable
5. Program the STM32 Nucleo board using the sample firmware provided
6. Reset the STM32 Nucleo board MCU with the onboard Reset button
7. The solution is ready to be used to evaluate Wi-Fi connectivity

Hardware description
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2 Hardware description
This section describes the X-NUCLEO-IDW01M1 features and provides useful information
for understanding the board schematics.
2.1 X-NUCLEO-IDW01M1 expansion board for STM32 Nucleo
The expansion board allows the user to test the functionality of the module. The
SPWF01SA module embeds a low power Wi-Fi b/g/n transceiver SoC, SMD antenna and
STM32 MCU.
Board functionality can be manipulated through the firmware packaged with the X-CUBE-
WIFI1 software, which must be programmed on the STM32 Nucleo board microcontroller.
Please, refer to user manuals UM1724 and UM1725 available on www.st.com for further
information on STM32 Nucleo boards.
The SPWF01SA module and the STM32 Nucleo board are connected through connectors
CN7 (see Table 1: "Interconnection between STM32 Nucleo board and X-NUCLEO-
IDW01M1 (ST morpho connector - CN7)") and CN10 Table 2: "Interconnection between
STM32 Nucleo board and X-NUCLEO-IDW01M1 (ST morpho connector - CN10)".
Moreover, considering that signals available on CN5, CN6, CN8 and CN9 are also
replicated on CN7 even and CN10 odd pin, it useful to indicate the indirect connection
between STM32 Nucleo board and X-NUCLEO-IDW01M1 (see tables from Table 3:
"Interconnection between STM32 Nucleo board and X-NUCLEO-IDW01M1 (Arduino UNO
R3 Connector CN6 - Power)" to Table 6: "Interconnection between STM32 Nucleo board
and X-NUCLEO-IDW01M1 through (Arduino UNO R3 Connectors CN9 - Digital)").
Pins marked with an asterisk (*) indicate an alternative pin for that specific
function and pins marked with a hash (#) indicate a specific function reserved for
future use and, not yet implemented on the module SPWF01SA.
Table 1: Interconnection between STM32 Nucleo board and X-NUCLEO-IDW01M1 (ST morpho
connector - CN7)
CN7 odd
CN7 even
Pin
Name
Fcn
Fcn
Name
Pin
1
2
3
PC12
WIFI_RST
GPIO10
PD2
4
5
VDD
E5V
6
7
GND
8
9
10
11
IOREF
12
13
RESET
14
15
PA14
GPIO13
+3V3
16
17
+5V
18
19
GND
GND
20
21
PB7
USART_RX*
GND
22
23
VIN
24

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CN7 odd
CN7 even
25
26
27
USART_CTS*
PA0
28
29
USART_RTS*
PA1
30
31
32
33
VBAT
34
35
36
37
38
Table 2: Interconnection between STM32 Nucleo board and X-NUCLEO-IDW01M1 (ST morpho
connector - CN10)
CN10 odd
CN10 even
Pin
Name
Fcn
Fcn
Name
Pin
1
GPIO6
PC8
2
3
PB8
I2C_SCL#
4
5
PB9
I2C_SDA#
USART_RX*
PC5
6
7
AVDD
U5V
8
9
GND
10
11
USART_RTS
PA12
12
13
USART_CTS
PA11
14
15
SPI_CS#
PB12
16
17
PB6
USART_TX*
18
19
GND
20
21
PA9
USART_TX
22
23
24
25
SPI_MOSI#
PB15
26
27
SPI_MISO#
PB14
28
29
SPI_CLK#
PB13
30
31
AGND
32
33
PA10
USART_RX
USART_TX*
PC4
34
35
PA2
USART_TX*
36
37
PA3
USART_RX*
38
Table 3: Interconnection between STM32 Nucleo board and X-NUCLEO-IDW01M1 (Arduino
UNO R3 Connector CN6 - Power)
Signal Name
NC
IOREF
RESET
3V3
5V
GND
GND
VIN
Pin
1
2
3
4
5
6
7
8
MCU Name
Fcn
3V3
GND
GND