ST UM2667 BlueNRG-M2SP module User Manual

: June 6, 2024
: ST

ST UM2667 BlueNRG-M2SP module

Introduction

The X-NUCLEO-BNRG2A1 expansion board provides Bluetooth low energy connectivity for developer applications and can be plugged onto an STM32 Nucleo development board (e.g., NUCLEO-L476RG with ultra-low power STM32 microcontroller) through its Arduino UNO R3 connectors.
The expansion board features the Bluetooth® v5.2 compliant and FCC certified BlueNRG-M2SP application processor module based on the ST BlueNRG-2 System-on- Chip. This SoC manages the complete Bluetooth low energy stack and protocols on its Cortex-M0 core and programmable Flash, which can accommodate custom applications developed using the SDK. The BlueNRG-M2SP module supports master and slave modes, increased transfer rates with data length extension (DLE), and AES-128 security encryption.
The X-NUCLEO-BNRG2A1 interfaces with the STM32 Nucleo microcontroller via SPI connections and GPIO pins, some of which can be configured by the hardware.

X-NUCLEO-BNRG2A1 expansion board

Typical Applications

The X-NUCLEO-BNRG2A1 expansion board can be used for the evaluation of the BlueNRG-M2 device in many applications, such as:

point-to-point communication
sensor application
home automation and lighting
direct test mode (DTM)

Acronyms and Abbreviations

List of Acronyms

Acronym

|

Description

---|---

EEPROM

| Electrically erasable programmable read only memory

GHz

| Giga Hertz

GUI

| Graphical user interface

LED

| Light emitting diode

MCU

| Microcontroller unit

P2P

| Point-to-point communication

RF

| Radio frequency communication

SPI

| Serial peripheral interface

SWD

| Serial wire debug

Getting Started

Overview

The X-NUCLEO-BNRG2A1 expansion board main features are:

Based on the BlueNRG-M2SP module FCC certified module (FCC ID: S9NBNRGM2SP and IC: B976C-BNRGM2SP)
Compatible with STM32 Nucleo boards
Equipped with Arduino UNO R3 connector
Amazon AWS qualified
Scalable solution, capable of cascading multiple boards for larger systems
Free comprehensive development firmware library and examples for BlueNRG-2 compatible with STM32Cube
BlueNRG-M2SP:
- Bluetooth v5.2 compliant
- Supports master and slave modes
- BLE data packet length extension
- Embedded BALF-NRG-02D3 integrated matched balun with harmonic filter
Interfaces:
- 1 UART, 1 I²C, 1 SPI, 14 GPIOs, 2 multifunction timers, 10-bit ADC, Watchdog & RTC, DMA controller, PDM stream processor, SWD debug interface
Small form factor: 11.5mmx13.5mm
Complemented with Bluetooth low energy protocol stack library (GAP, GATT, SM, L2CAP, LL)
AES security co-processor
Bluetooth low energy SDK with a wide range of profiles
Embedded BlueNRG-2 BLE SoC:
- High performance, ultra-low power Cortex-M0 32-bit based core
- Programmable embedded 256 KB Flash
- 24 KB embedded RAM with data retention
- Up to +8 dBm available output power
- Down to -88 dBm Rx sensitivity
- Up to 96 dB link budget with excellent link reliability

Hardware and Software Requirements

To use STM32 Nucleo development boards with the X-NUCLEO-BNRG2A1 expansion board, connect the boards as shown below.

X-NUCLEO-BNRG2A1 expansion board connected to an STM32 Nucleo development board

The X-NUCLEO-BNRG2A1 can be connected to any STM32 Nucleo development board. The following software and hardware specifications are required:

a PC/laptop with Microsoft Windows (7 and above) to install the software package (X-CUBE-BLE2).
DTM project to be flashed in the module
a type A USB to mini-B USB cable to connect the STM32 Nucleo to the PC/laptop
a 5-pin connector programming wire to program the X-NUCLEO-BNRG2A1 using the STM32 Nucleo

Board Setup

Step 01: Check that the jumper on J10 connector is connected to provide the required voltage to the board devices.
Step 02: Connect the X-NUCLEO-BNRG2A1 to the STM32 Nucleo board as shown in Figure 2.
Step 03: Connect jumper J14 to select the SPI clock for the SPI.
Step 04: Program the STM32 Nucleo with the corresponding firmware to use the X-NUCLEO-BNRG2A1 as a network coprocessor.

The evaluation kit is ready-to-use.

Hardware Description and Configuration

Interconnection Details

The X-NUCLEO-BNRG2A1 expansion board and the NUCLEO-L476RG development board connection details are listed in the table below.
X-NUCLEO-BNRG2A1 and NUCLEO-L476RG connection details (left connector)

Signal name

NC| IOREF| RESET| +3V3| +5 V| GND| GNDS| VIN| A0| A1| A2| A3| A4|

A5

Connector name

CN6 Power|

CN8 Analog

Pin number

1| 2| 3| 4| 5| 6| 7| 8| 1| 2| 3| 4| 5|

6

NUCLEO-L476RG MCU port

| | | | | | | | PA0| PA1| PA4| PB0| PC1|

PC0

X-NUCLEO-BNRG2A1 expansion board signals

NC| IOREF| RESET| +3V3| +5 V| GND| GND| VIN| DIO7/ BOOT| DIO1/ SPI_CS| –| –| –|

–

X-NUCLEO-BNRG2A1 and NUCLEO-L476RG connection details (right connector)

Signal name

D15| D14| –| –| D13| D12| D11| D10| D9| D8| D7| D6| D5| D4| D3| D2| D1|

D0

Connector name

CN5 Digital|

CN9 Digital

Pin number

10| 9| 8| 7| 6| 5| 4| 3| 2| 1| 8| 7| 6| 5| 4| 3| 2|

1

NUCLEO-L476RG MCU port

PB8| PB9| AVDD| GND| PA5| PA6| PA7| PB6| PC7| PA9| PA8| PB10| PB4| PB5| PB3| PA10| PA2|

PA3

X-NUCLEO-BNRG2A1 expansion board signals

–| –| AREF| GND| DIO0/ SPIC LK| DIO2| DIO3| –| –| DIO4| –| DIO6| DIO12| DIO14| DIO 0/ SPI CLK| DIO5| DIO 11/ SPI_ CS| DIO8

Note:

To use PA1 as SPI_CS with DIO1 mount resistor R70.
To use PA1 as SPI_CS with DIO11 mount resistor R76.
To use PA2 as SPI_CS with DIO11 mount resistor R86.
To take control of RESET in the STM32 application with PA8, mount resistor R117.

SPI and GPIO Connection Options

The SPI and GPIO connection options between the STM32 Nucleo and BlueNRG-M2 on the X-NUCLEO-BNRG2A1 expansion board can be used to enable different configurations in case a signal conflict occurs when using other expansion boards.

X-NUCLEO-BNRG2A1 interface with STM32 Nucleo development board

X-NUCLEO-BNRG2A1

| BlueNRG-M2SP| Default STM32 port| Optional STM32 port
---|---|---|---
PA0_SPI_IRQ_PB14_BNRG1BOOT| DIO7/BOOT| PA0(1)
PB14(2)|

–

DIO1_SPI_CS

| DIO1| PA1| –
DIO11_SPI_CS| DIO11| PA1|

PA2
To use the optional port, mount R86 and unmount R76

SPI_CLK

| DIO0| PA5
JP14: pins 1-2 shorted|

PB3
To use the optional port, short J14 pins 2 and 3

To use PA0 for another purpose (for example, to plug another shield that uses PA0), unsolder R85.
To use PB14, physically connect PB14 of the X-NUCLEO-BNRG2A1 to PB14 of the Nucleo-64 development board and change the code from STM32CubeMX so that it uses PB14 instead of PA0. This requires:
- to assign pin PB14 to GPIO_EXTI14
- to enable interrupts for “EXTI Line[15:10]” in NVIC
- to set “Exti Line” to PB14 in the BlueNRG-M2SP software package

X-NUCLEO-BNRG2A1 jumpers

Jumper

| Signals|

Description

---|---|---

J10

|

3.3 V

| Power connector

J11

| | User application

J12

|

SWD

| For SWD debugging/programming

J13

| | User application

J14

|

SPI_CLK

| To select the SPI clock pin PA5 or PB3

Default: pins 1-2 shorted

J15

|

PA0_SPI_IRQ_PB14_BNRG1BOOT

| This jumper is connected to DIO7 of the BlueNRG-2 and must be shorted for boot pin high. DIO7 can be used for Bootloader activation.

Current Measurement

To monitor the X-NUCLEO-BNRG2A1 expansion board power consumption, insert an ammeter probe between pin 1 and 2 of the jumper J10 connector.

X-NUCLEO-BNRG2A1 Component Placement Details

The figure below shows the component placement on the X-NUCLEO-BNRG2A1 expansion board.

X-NUCLEO-BNRG2A1 on-board Device Placement

ST morpho connector (not mounted by default)
Arduino UNO R3 connector
Arduino UNO R3 connector
BlueNRG-M2SP
J15 – boot pin jumper
J14 – SPI_CLK select jumper
ST morpho connector (not mounted by default)
Arduino UNO R3 connector
Arduino UNO R3 connector
J10 – power jumper
J11 – user application jumper
J12 – SWD jumper
J11 – user application jumper

X-NUCLEO-BNRG2A1 on-board device placement

X-NUCLEO-BNRG2A1 on-board Device Description

BlueNRG-M2SP Module

The BlueNRG-M2SP is a Bluetooth® low Energy System-on-Chip application processor certified module (FCC ID: S9NBNRGM2SP, IC ID: 8976C-BNRGM2SP), compliant with BT specifications v5.2 and BQE qualified. The module supports multiple roles simultaneously and can simultaneously act as a Bluetooth Smart master and slave device.
The BlueNRG-M2SP is based on BlueNRG-2 System-on-Chip and includes Bluetooth Low Energy stack and protocols.
The device interfaces with STM32 Nucleo boards through SPI and GPIOs.

BlueNRG-M2SP device details

Description

| Features
---|---
BlueNRG-M2SP|

Order code

SMD 23 pin

| Package
1.7- 3.6 V|

Operating Voltage

SPI EEPROM

The M95640-RMC6TG 64 Kbit serial SPI bus EEPROM with high-speed clock interface can be mounted on the X-NUCLEO-BNRG2A1 expansion board.
It can be used to store the configuration parameters related to application or settings of the BlueNRG-2 RF device.
Its main features are:

Compatible with the Serial Peripheral Interface (SPI) bus
Memory array – 64 Kb (8 Kbytes) of EEPROM – Page size: 32 bytes
Write (byte write within 5 ms, page write within 5 ms)
Additional Write lockable page (identification page)
Write Protect: quarter, half or whole memory array
High-speed clock: 20 MHz

M95640-RMC6TG connection with NUCLEO-L476RG development board

M95640-RMC6TG EEPROM

| NUCLEO-L476RG| Pin no.| Connector name| Signal name
---|---|---|---|---
D (PA7_SPI_MOSI)| PA7| 4| CN5|

D11

Q(PA6_SPI_MISO)

| PA6| 5| CN5| D12
C(SPI_CLK)| PB3/PA5| 4/6| CN9/CN5|

D3/D13

/S(PB6_SPI_CSN)

| PB6| 3| CN5|

D10

Note:

The SPI EEPROM IC is not mounted on the board.
To use PB3 or PA5 with C(SPI_CLK), select jumper J14.
To use PB6 as SPI_CSN, mount resistor R77.

M95640-RMC6TG device details

Description

| Features
---|---
M95640-RMC6TG|

Order code

MLP8

| Package
1.8 to 5.5 V|

Operating voltage

Schematic Diagrams

X-NUCLEO-BNRG2A1 schematic diagram – BlueNRG-M2SP

X-NUCLEO-BNRG2A1 schematic diagram – Arduino connectors

X-NUCLEO-BNRG2A1 schematic diagram – morpho connectors

X-NUCLEO-BNRG2A1 schematic diagram – M95640-RMC6TG

X-NUCLEO-BNRG2A1 schematic diagram – resistor mapping

Bill of Materials

X-NUCLEO-BNRG2A1 bill of materials

Item

| Q.ty| Ref.| Part/Value| Description| Manufacturer| Order code
---|---|---|---|---|---|---
1| 1| U8| SMD 20 PIN| Very low power application processor module for Bluetooth® low energy v5.2| ST|

BlueNRG-M2SP

2

| 2| U9| UFDFPN8 (MC) 2

x 3 mm

SSQ-110-03-F-S

2

4

| 4| CN8| Pass-through: male on bottom, female on top. 6×1 2.54 mm pitch| Arduino connector CN8 6 pins| SAMTEC| SSQ-106-03-G-S
5| 5| J10| 2 pin connector, 2.54mm pitch| Power supply connector to module VDD| Any|

Any

6

| 6| J11| 3 pin connector, 2.54mm pitch| Jumper| Any| Any
7| 7| J12| 5 pin connector, 2.54mm pitch| SWD programming connector| Any|

Any

8

| 8| J13| 3 pin connector, 2.54mm pitch| Interface selector| Any| Any
9| 9| J14| 3 pin connector, 2.54mm pitch| SPI1_CLK selection between D13 and D3 pin of Arduino connector| Any|

Any

10

| 10| J15| 2pin connector, 2.54mm pitch| Boot pin connect to VDD , for wake up device when in sleep| Any| Any
1| 1| C47| 10 nF,16 V SMD

0805

| Capacitor| Any|

Any

2

| 2| C48| 100 nF,16 V ‘SMD

0805

| Capacitor| Any| Any
3| 3| C49| 100 nF,16 V SMD

0805

| Capacitor| Any|

Any

1

| 1| R71, R73, R76, R77, R79, R80, R82, R85| SMD 0805| Resistors| Any| Any
2| 2| R74, R75| SMD 0805| 100K| Any|

Any

3

| 3| R78| 220, ‘SMD 0805| Resistors| Any| Any
4| 4| R81,R83,R84,R8 7,R117,R70,R86| SMD 0805| Resistor (not mounted)| Any|

Any

5

| 5| R88, R119| 10 K, SMD 0805| Resistors| Any| Any
6| 6| R116| 47 K, ‘SMD 0805| Resistor| Any|

Any

1

| 1| D1| SMD 0805| Yellow LED| Dialight|

598-8150-107f

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 radiated radio frequency energy. The radio frequency energy produced by this device is well below the maximum exposure allows by Federal Communications Commission (FCC).
The X-NUCLEO-BNRG2A1 contains FCC certified module BlueNRG-M2SP (FCC ID: S9NBNRGM2SP).

Formal notices required by the Industry Canada (“IC”)

This device complies with Industry Canada licence-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.