ST P-NUCLEO-LRWAN2 Manuale utente

Introduction

This user manual describes how to get started with the P-NUCLEO-LRWAN2 and P-NUCLEO-LRWAN3 starter packs.

Hardware and software setups are discussed in detail, together with the setup of supported network and application servers.

The P-NUCLEO-LRWAN2 starter pack supports the higher frequency bands (868 MHz and 915 MHz). It includes:

•A sensor node based on STMicroelectronics NUCLEO-L073RZ Nucleo board and USI® I-NUCLEO-LRWAN1 LoRa®

expansion board with antenna

•A LoRaWAN® gateway based on STMicroelectronics NUCLEO-F746ZG Nucleo board and RisingHF LRWAN_GS_HF1

expansion board with antenna

The P-NUCLEO-LRWAN3 starter pack supports the lower frequency bands (433 MHz and 470 MHz). It includes:

•A sensor node based on STMicroelectronics NUCLEO-L073RZ Nucleo board and RisingHF LRWAN_NS1 LoRa®

expansion board

•A LoRaWAN® gateway based on STMicroelectronics NUCLEO-F746ZG Nucleo board and RisingHF LRWAN_GS_LF1

expansion board

• Antennas

This user manual also describes the I-CUBE-LRWAN STM32Cube Expansion Package for the sensor node, and the gateway

binary software.

Figure 1. P-NUCLEO-LRWAN2 and P-NUCLEO-LRWAN3 - LoRaWAN® sensors and gateways

Gateway

Sensor

Gateway

Sensor

P-NUCLEO-LRWAN2 P-NUCLEO-LRWAN3

Pictures are not contractual.

Getting started with the P-NUCLEO-LRWAN2 and P-NUCLEO-LRWAN3

starter packs

UM2587

User manual

UM2587 - Rev 2 - April 2021

For further information contact your local STMicroelectronics sales office.

www.st.com

1P-NUCLEO-LRWAN2 starter pack overview

Figure 2 shows an overview of the P-NUCLEO-LRWAN2 starter pack, which includes a LoRaWAN® sensor

device and gateway as well as the antennas.

Instructions at the back of the insert card guide the users on how to power up and configure the sensor device

and gateway and setup the network.

The starter pack is configured to use the EU868 frequency band with the sensor device in OTAA mode and

the gateway forwarding the packets to Loriot EU1 server. The pack is user configurable by firmware and by AT

commands.

Figure 2. STM32 Nucleo LoRaWAN® development kit (P-NUCLEO-LRWAN2 starter pack)

The antennas in this product are assembled and locked with the boards, which was not the case in earlier

versions. They do not have to be removed by users to comply with FCC regulations. The current product

packaging is adapted to this configuration. Visuals and illustrations in the related technical documents may differ

from the current product version.

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P-NUCLEO-LRWAN2 starter pack overview

UM2587 - Rev 2 page 2/51

1.1 Sensor hardware overview

The P-NUCLEO-LRWAN2 LoRaWAN® sensor device has the following key features:

Main board

•NUCLEO-L073RZ development board (from STMicroelectronics)

–STM32L073RZT6 Arm® Cortex®-M0+ ultra-low-power MCU at 32 MHz with 192-Kbyte Flash memory,

20-Kbyte SRAM and 6-Kbyte data EEPROM

– 1 user LED

– 1 user and 1 reset push-buttons

– 32.768 kHz crystal oscillator

– On-board ST-LINK/V2-1 debugger/programmer with USB re-enumeration capability: mass storage,

Virtual COM port, and debug port

– Board connectors

◦ Mini-AB USB connector for the ST-LINK

◦ARDUINO® Uno V3 expansion connector

◦ ST morpho extension pin headers for full access to all STM32 I/Os

RF module and sensor expansion board

•I-NUCLEO-LRWAN1 LoRa® HF band (868/915/923 MHz) sensor expansion board (from USI®)

– USI® WM-SG-SM-42 low-power long-range LoRaWAN® module, based on the STM32L052 MCU and

Semtech SX1272 transceiver

– STMicroelectronics HTS221 temperature and humidity sensor

– STMicroelectronics LPS22HB pressure sensor

– STMicroelectronics LSM303AGR accelerometer and gyroscope sensor

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

All other trademarks are the property of their respective owners.

Figure 3 shows the two boards in the P-NUCLEO-LRWAN2 LoRaWAN® sensor device.

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Sensor hardware overview

UM2587 - Rev 2 page 3/51

Figure 3. STM32 Nucleo LoRaWAN® sensor device (P-NUCLEO-LRWAN2)

NUCLEO-L073RZ

main board

I-NUCLEO-LRWAN1

expansion board

ST-LINK

Arm® Mbed™

removable

storage

USB VCOM

LSM303AGR

LPS22HB

HTS221

USI® module

Sensors:

STM32L073RZT6

microcontroller

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Sensor hardware overview

UM2587 - Rev 2 page 4/51

1.1.1 I-NUCLEO-LRWAN1 LoRa® HF band and sensor expansion board

The I-NUCLEO-LRWAN1 is supplied by a third party (USI®). For complete and latest information, refer to the third

party GitHub page https://github.com/USILoRaModule/USI_I-NUCLEO-LRWAN1.

Figure 4. I-NUCLEO-LRWAN1 block diagram and connectors

XTAL

32 MHz

SX1272

(860 MHz – 1020 MHz)

STM32L052T8Y6

64-Kbyte Flash

8-Kbyte RAM

2-Kbyte EEPROM

SPI1

RESET

DIO 0-4

Antenna

RFI

VR_PA

RF SWITCH

PA_BOOST

U.FL

XTAL

32.768 kHz

ANT TX/RX

ADC 1 – 3

Note: The Nucleo board communicates with the expansion board via the STM32 UART (PA2, PA3). The following

modifications are applied to the Nucleo board:

• SB62 and SB63 are closed

• SB13 and SB14 are opened to disconnect the STM32 UART from ST-LINK

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Sensor hardware overview

UM2587 - Rev 2 page 5/51

1.2 Gateway hardware overview

The P-NUCLEO-LRWAN2 LoRaWAN® gateway shown in Section 1.2 has the following key features:

Gateway main board

•NUCLEO-F746ZG development board (from STMicroelectronics)

–STM32F746ZGT6 Arm® Cortex®-M7 high-performance MCU at 216 MHz with 1-Mbyte Flash memory

and 320-Kbyte SRAM

– 3 user LEDs

– 1 user and 1 reset push-buttons

– Ethernet compliant with IEEE-802.3-2002

– USB OTG full speed or device only

– 32.768 kHz crystal oscillator

– On-board ST-LINK/V2-1 debugger/programmer with USB re-enumeration capability: mass storage,

Virtual COM port, and debug port

– Board connectors

◦ Micro-AB USB connector for the ST-LINK

◦ST Zio expansion connector including ARDUINO® Uno V3

◦ ST morpho extension pin headers for full access to all STM32 I/Os

◦ USB with Micro-AB

◦ Ethernet RJ45

Gateway expansion board

• LRWAN_GS_HF1 LoRa® HF band (868/915/923 MHz) gateway expansion board (from RisingHF)

– SX1301/SX1257 HF baseband data concentrator and transceiver

◦ Automatically adaptive to spreading factor from SF12 to SF7 in each of 8 channels

◦ High sensitivity down to -140 dBm at 300 bit/s

◦ 6 dBm output power

◦ Support LoRaWAN® protocol Class A and Class C

◦ Support Semtech packet forwarder

◦ Support DNS and NTP

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Gateway hardware overview

UM2587 - Rev 2 page 6/51

Figure 5. STM32 Nucleo LoRaWAN® gateway (P-NUCLEO-LRWAN2)

Gateway additional features

• Programmable parallel demodulation paths

• LoRa® demodulators and 1 GFSK demodulator embedded

• Single +5 V supply

• AT command interface to re-configure the parameters of the gateway

– change frequency plan

– change IP of the gateway

– change MAC address and ID of the gateway

– change network server that supports Semtech packet forwarder

– set to use public server or private server

– change DNS address

– change NTP server address

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Gateway hardware overview

UM2587 - Rev 2 page 7/51

1.2.1 Gateway expansion board

The LRWAN_GS_HF1 gateway expansion board shown in Figure 6 is designed by RisingHF (www.risinghf.com).

It includes a Semtech SX1301 digital baseband circuit integrating the LoRa® concentrator, Semtech SX1257 HF

front-end transceiver module, and two SAW filters to achieve a wider bandwidth range (868 MHz to 915 MHz).

The expansion board is controlled by the NUCLEO-F746ZG via the SPI interface.

The gateway expansion board includes also an external +5 V power supply circuitry, which powers both the

gateway expansion board and NUCLEO-F746ZG development board. The NUCLEO-F746ZG is powered via pin

VIN (Pin 15 of connector CN8 on the Nucleo board).

For more details, refer to [3].

Figure 6. Gateway expansion board (P-NUCLEO-LRWAN2)

LF/HF identification

VIN

PF5 – GPIO4

PF10 – GPIO3

USB for external 5 V supply

ANT connector

(with protection cap)

PA5 – SCK (optional)

PA6 – MISO (optional)

PA6 – MOSI (optional)

PD14 – CSN (optional)

PD15 – Band Set1

PE9 – Band Set2

PF12 – RST

PE11 – CSN

PF13 – GPIO0

PF14 – GPIO1

PE13 – MISO

PF15 – GPIO2

PE12 – SCK

PE14 – MOSI

Table 1. P-NUCLEO-LRWAN2 gateway expansion board pins description

Pin name Pin description

VIN Power supply to NUCLEO-F746ZG from external 5 V

PF5/PD12/PC4/PB9 -GPIO4 GPIO4 from SX1301

PF10/PD13/PC5/PB8 -GPIO3 GPIO3 from SX1301

PF15-GPIO2 GPIO2 from SX1301

PF14-GPIO1 GPIO1 from SX1301

PF13-GPIO0 GPIO0 from SX1301

PE11-CSN CSN of SPI for SX1301

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Gateway hardware overview

UM2587 - Rev 2 page 8/51

Pin name Pin description

PE13-MISO MISO of SPI for SX1301

PE12-SCK SCK of SPI for SX1301

PE14-MOSI MOSI of SPI for SX1301

PE15-RST Reset for SX1301

PD15-Band Set1 ST Nucleo LoRa GW HF

• PE9=0, PD15=1: Band EU868

• PE9=1, PD15=0: Band US915/AS915/AU915

PE9-Band Set2

PA5-SCK (optional) Backup SCK of SPI for SX1301

(no connection on board in default)

PA6-MISO (optional) Backup MISO of SPI for SX1301

(no connection on board in default)

PA7/PB5-MOSI (optional) Backup MOSI of SPI for SX1301

(no connection on board in default)

PD14-CSN (optional) Backup CSN of SPI for SX1301

(no connection on board in default)

Figure 7 presents the architecture of the LRWAN_GS_HF1 gateway expansion board.

Figure 7. Hardware architectures of the P-NUCLEO-LRWAN2 gateway expansion board

Baseband

SX1301

Transceiver

SX1257

Transceiver

SX1257

LNA

Balun LTCC LPF

SAW

868 MHz

SAW

915 MHz

SW SW

Emission

Legend: Reception

HF specific

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Gateway hardware overview

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2P-NUCLEO-LRWAN3 starter pack overview

Figure 8 shows an overview of the P-NUCLEO-LRWAN3 starter pack, which includes a LoRaWAN® sensor

device and gateway as well as the antennas.

Instructions at the back of the insert card guide the users on how to power up and configure the sensor device

and gateway and setup the network.

The starter pack is configured to use the CN470Prequel frequency band with the sensor device in OTAA mode

and the gateway forwarding the packets to Loriot CN1 server. The pack is user configurable by firmware and by

AT commands.

Figure 8. STM32 Nucleo LoRaWAN® development kit (P-NUCLEO-LRWAN3 starter pack)

2.1 P-NUCLEO-LRWAN3 starter pack known limitation

The serial number of the NUCLEO-L073RZ MB1136 reference board is indicated on a sticker under the MB1136.

If the number is within the range from A191400001 to A191402004, the board must be updated with a new

firmware before use. Download the last firmware version available at www.st.com/i-cube-lrwan.

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P-NUCLEO-LRWAN3 starter pack overview

UM2587 - Rev 2 page 10/51

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