ST STM32WL Series Bedienungsanleitung

Introduction

The B-WL5M-SUBG1 STM32WL connectivity expansion board provides an affordable and flexible way for users to try out new

concepts and build prototypes with the STM32WL series STM32WL5MOC microcontroller module.

The B-WL5M-SUBG1 product requires a separate probe for programming and debugging. The STLINK-V3SET debugger can

be connected through a MIPI10/STDC14 cable.

The B-WL5M-SUBG1 STM32WL connectivity expansion board is provided with a USB Type-C® connector on an add-on

STMod+ adapter board.

The B-WL5M-SUBG1 product is provided with the STM32WL comprehensive software HAL library and various packaged

software examples available with the STM32CubeWL MCU Package.

Figure 1. B-WL5M-SUBG1 product

Picture is not contractual.

STM32WL5MOC connectivity expansion board

UM3127

User manual

UM3127 - Rev 1 - January 2024

For further information contact your local STMicroelectronics sales office. www.st.com

1 Features

• STM32WL connectivity expansion board embedding an STM32WL5MOC module including:

– Ultra‑low‑power STM32WL55JC microcontroller multiprotocol LPWAN dual‑core based on

Arm® Cortex®‑M4/M0+, featuring 256 Kbytes of flash memory and 64 Kbytes of SRAM in a

UFBGA73 package

– RF transceiver (150 MHz to 960 MHz frequency range) supporting LoRa®, (G)FSK, (G)MSK, and

BPSK modulations

• 4‑Mbit CMOS serial flash memory and 256‑Kbit serial I2C bus EEPROM

• MEMS sensors from STMicroelectronics:

– Integrated high-accuracy temperature sensor

– High-accuracy, ultra-low-power, 3-axis digital output magnetometer

– 3D accelerometer and 3D gyroscope

– Ultracompact piezoresistive absolute pressure sensor

• Three user LEDs

• User and reset push-buttons

• Board connectors:

–MIPI® debug

– STMod+

– Stubby antenna

– USB Type-C® for power only on add‑on STMod+ adapter board

• Flexible power supply options: external sources, or USB VBUS from the add‑on board

• Comprehensive free software libraries and examples available with the STM32CubeWL MCU Package

• Support of a wide choice of Integrated Development Environments (IDEs) including IAR Embedded

Workbench®, MDK-ARM, and STM32CubeIDE

Note: Arm is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere.

UM3127

Features

UM3127 - Rev 1 page 2/47

2 Ordering information

To order the B-WL5M-SUBG1 STM32WL connectivity expansion board, refer to Table 1. Additional information is

available from the datasheet and reference manual of the target microcontroller.

Table 1. List of available products

Order code Board reference Target STM32

B-WL5M-SUBG1 • MB1779(1)

• MB1880(2) STM32WL5MOCH6TR

1. Expansion board

2. STMod+ adapter board

2.1 Codification

The meaning of the codification is explained in Table 2.

Table 2. Codification explanation

B-XXYY-ZZZZT Description Example: B-WL5M-SUBG1

B Expansion board Connectivity expansion board

XX MCU series in STM32 32-bit Arm Cortex MCUs STM32WL series

YY MCU product line in the series STM32WL5M line

ZZZZ Wireless network Sub‑gigahertz wireless network based on LoRa®, (G)FSK,

(G)MSK, and BPSK modulations

T Sequential number First SUBG connectivity expansion board

UM3127

Ordering information

UM3127 - Rev 1 page 3/47

3 Development environment

The B-WL5M-SUBG1 STM32WL connectivity expansion board runs with the STM32WL5MOC module including

the STM32WL5MOCH6 32-bit microcontroller based on the Arm® Cortex®‑M4/M0+ processor.

3.1 System requirements

• Multi‑OS support: Windows® 10, Linux® 64-bit, or macOS®

• USB Type-A or USB Type-C® to USB Type-C® cable

Note: macOS® is a trademark of Apple Inc., registered in the U.S. and other countries and regions.

Linux® is a registered trademark of Linus Torvalds.

Windows is a trademark of the Microsoft group of companies.

3.2 Development toolchains

•IAR Systems® - IAR Embedded Workbench®(1)

•Keil® - MDK-ARM(1)

• STMicroelectronics - STM32CubeIDE

1. On Windows® only.

UM3127

Development environment

UM3127 - Rev 1 page 4/47

4 Conventions

Table 3 provides the conventions used for the ON and OFF settings in the present document.

Table 3. ON/OFF convention

Convention Definition

Jumper JPx ON Jumper fitted

Jumper JPx OFF Jumper not fitted

Jumper JPx [1-2] Jumper fitted between Pin 1 and Pin 2

Solder bridge SBx ON SBx connections closed by 0 Ω resistor

Solder bridge SBx OFF SBx connections left open

Resistor Rx ON Resistor soldered

Resistor Rx OFF Resistor not soldered

Capacitor Cx ON Capacitor soldered

Capacitor Cx OFF Capacitor not soldered

UM3127

Conventions

UM3127 - Rev 1 page 5/47

5 Quick start

The B-WL5M-SUBG1 STM32WL connectivity expansion board product is an easy‑to‑use and low‑cost

development kit used to evaluate and start development quickly with an STM32WL5MOC module. Before

installing and using the product, accept the evaluation product license agreement from the www.st.com/epla web

page. For more information on the B-WL5M-SUBG1 STM32WL connectivity expansion board product and

demonstration software, visit the www.st.com/stm32nucleo web page.

5.1 Getting started

Follow the sequence below to configure the product and launch the demonstration application (refer to Figure 3

for component location):

1. Check jumper positions on board, JP2 (IDD) ON, JP1 (internal) OFF. The default jumper position on the board

is explained in Table 4.

2. Supply the B-WL5M-SUBG1 STM32WL connectivity expansion board (MB1779). You can, for example,

connect a supply cable at CN4 to supply the board with 5 V (5EV).

3. Connect the B-WL5M-SUBG1 STM32WL connectivity expansion board (MB1779) to an external STLINK-

V3SET debugger through the CN3 connector of the MB1779 board. Connect the external STLINK-V3SET

debugger to a PC with a standard USB cable. Then the LED4 (5V_PWR) green LED lights up, and the LED3

red LED flashes quickly.

4. On the PC, connect a UART terminal to the board using the following settings:

– UART terminal: new line received = auto; new line transmit = LF (line feed)

– Serial port setting: Select COM port number, 9600 baud rate, 8-bit data, parity none, one stop bit, and no

flow control

5. Press on the SW2 reset button of the B-WL5M-SUBG1 STM32WL connectivity expansion board (MB1779).

– The MB1779 board remains silent until it gets a command from the connected PC to start sending a

beacon on one of the beacon frequencies.

– The frequency is selected depending on the region.

– After the version check, the first three commands to send to the PC must set region, subregion, and

start the beacon (AT+REGION=x and AT_BEACON_ON). The first two commands select the format of

the transmission beacon. The third command starts sending the beacon.

– For a list of available regions run AT_LIST_REGIONS.

6. Then a concentrator (for example a NUCLEO-WL55JC1 board) starts flashing a green LED on each time slot

of the network.

7. To get the demonstration fully up and running, up to 14 B-WL5M-SUBG1 STM32WL connectivity expansion

board (MB1779) demonstration sensors can be flashed and placed against a Nucleo demonstration

concentrator.

8. This demonstration application software is available on the www.st.com website.

Table 4. Jumper default configuration

Jumper Definition Position(1) Comment

JP2 IDD ON For STM32WL5MOC current

measurements (RF part)

1. The default jumper state is shown in bold.

UM3127

Quick start

UM3127 - Rev 1 page 6/47

6 Hardware layout and configuration

6.1 CEB MB1779 board

The CEB (connectivity expansion board) MB1779 board is designed around the STM32WL5MOC module, which

includes an STM32 microcontroller in a 73‑pin UFBGA package. Figure 2 shows the connections between the

STM32WL5MOC module and its peripherals, push-buttons, LEDs, USB, and sensors. Figure 3 and Figure 4 show

the location of these features on the CEB MB1779 board. The mechanical dimensions of the board are shown in

Figure 5.

Figure 2. MB1779 hardware block diagram

DT59126V1

STM32WL55

Reset

button

GPIO

DEBUG

IDD

32 MHz

TCXO

Blue user LED (LD1)

Green 5V_PWR

LED (LD4)

User

button

Green User LED (LD2)

Red User LED (LD3)

RF switch/

control

and

matching

SMA

connector

(CN2)

VCP SWD

32 kHz

Crystal

STM32WL5MOC module

ST-SAFE

STMod+

connector

(CN1)

E5V

Temperature

sensor (U14)

Barometer

(U4)

Accelerometer-

gyroscope

(U2)

Magnetometer

(U7)

I2C

SPI

Serial flash

memory

I2C bus

EEPROM

(CN4)

(U10)

(U8)

(U14)

(U4)

(U2)

(U7)

(SW2) (SW1)(CN3)

(U3)

(JP2)

6.1.1 MB1779 PCB layout

Figure 3. MB1779 top layout

Product

sticker

Barometer (U4)

E5V supply

connector

(CN4)

STM32WL5M module

(U3)

3V3 regulator (U6)

SMA antenna

connector

(CN2)

3D accelerometer and 3D gyroscope (U2)

E3V3 supply

connector

(CN5)

STDC14 debug

Connector

(CN3)

USER button

(SW1)

I2C EEPROM

(U8)

Magnetometer

(U7)

Temperature sensor

(U14) CMOS

serial flash memory

(U10) User LEDs

(LD1, LD2,

and LD3)

RESET button

(SW2)

IDD jumper for

current measurement

(JP2 ON)

STMod+

connector

(CN1)

DC switches

(U1 and U5)

UM3127

Hardware layout and configuration

UM3127 - Rev 1 page 7/47

Figure 4. MB1779 bottom layout

DT59129V1

EMS sticker

(reserved for EMS)

Board sticker

SMA antenna

connector

(CN2)

E5V supply

connector

(U15)

UID64 sticker

STMod+

connector

(CN1)

• The UID64 sticker:

A 64-bit unique device identification (UID64) is stored in the flash memory and can be accessed by the

CPUs, at 0x1FFF7580 base address.

The UID64 sticker displays the UID information (16 digits as 64‑bit codification, displayed in little‑endian

bytes) which is unique for each STM32WL5MOC module.

• The EMS sticker:

This sticker is an internal follow‑up sticker for the EMS subcontractor. Do not take it into account.

6.1.2 MB1779 mechanical drawing

Figure 5. MB1779 mechanical drawing

UM3127

Hardware layout and configuration

UM3127 - Rev 1 page 8/47

6.2 MB1880 STMod+ adapter board

The MB1880 STMod+ adapter board is a very simple board that allows the MB1779 connectivity expansion board

to become a host with the add-on STMod+ connectors (female).

Figure 6 shows the basic hardware block diagram. Figure 7 and Figure 8 show the location of the main

components of the MB1880 board. The mechanical dimensions of the board are shown in Figure 9.

Figure 6. MB1880 basic hardware block diagram

DT59131V1

JP1

STMod+

connector

(CN2)

STMod+

connector

(CN3)

USB C

(CN1)

JP2

6.2.1 MB1880 PCB layout

Figure 7. MB1880 top layout

DT59132V1

STMod+

connector

(CN2)

Jumper

(JP1)

5V test point

(TP2)

GND test point

(TP1)

Jumper

(JP2)

STMod+

connector

(CN3)

ESDA7P60-1U1M

ESD protection

(U1)

USB Type-C®

connector

(CN1)

UM3127

Hardware layout and configuration

UM3127 - Rev 1 page 9/47

Figure 8. MB1880 bottom layout

DT59133V1

STMod+

connector

(CN3)

Board sticker

EMS sticker

(reserved for EMS)

STMod+

connector

(CN2)

Two stickers (the board sticker and an EMS sticker) are present on the bottom side of the MB1880 board:

1. The board sticker is composed of three parts:

a. Line 1: board reference using the format MBxxxx-Variant-yzz with xxxx as the board reference,

Variant as the board variant, coded on 26 digits maximum, y as the PCB revision, and zz as the

assembly revision, such as 01 or 02.

b. Line 2: board serial number coded on 10 digits syywwxxxxx with s as the subcontractor ID, yy the year of

assembly, ww the week of assembly, and xxxxx the board index number starting from 00001 for each

production batch.

c. QR code: (25x25; 47 characters maximum) encoding lines one and two information. The QR code is

placed on the right of the two lines.

2. The EMS sticker:

This sticker is an internal follow-up sticker for the EMS subcontractor. Disregard it.

6.2.2 MB1880 mechanical drawing

Figure 9. MB1880 mechanical drawing (in millimeters)

UM3127

Hardware layout and configuration

UM3127 - Rev 1 page 10/47

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