LoRa is a wireless communication technology developed to create the low-power, wide-area networks (LPWANs) required for machine-to-machine (M2M) and Internet of Things (IoT) applications (see this short PDF).
LoRa is a spread-spectrum technology with a wider band (usually 125 kHz or more).
It’s frequency-modulated chirp utilizes coding gain for increased receiver sensitivity. (From: LinkLabs)
Key features of LoRa technology:
Long range: > 15 km/9mi range
Low-power: 5-10 year expected battery lifetime
Low-cost: from end-node sensor cost to upfront infrastructure investment
Secure: with embedded end-to-end AES-128 encryption of data
Geolocation: enables indoor/outdoor tracking without GPS
LoRaWAN™ is a global LPWAN specification created by the LoRa Alliance™ to drive a single standard for seamless interoperability across the industry.
LoRa technology is ideally suited for the applications:
Smart Home and Building
Retail and Logistics
As a board member and sponsor of the LoRa Alliance, ST offers an affordable and easy-to-use set of hardware tools dedicated to the evaluation and development of LoRa solutions.
The STM32 Nucleo pack for LoRa™ technology and high-performance FSK/OOK RF transceiver modem (P-NUCLEO-LRWAN1) combined with the LoRaWAN software expansion package for STM32Cube (I-CUBE-LRWAN) is the quickest way to build a LoRaWAN end-node device.
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- P-NUCLEO-LRWAN2 P-NUCLEO-LRWAN3
The P-NUCLEO-LRWAN2 STM32 Nucleo starter pack for LoRa® technology and high-performance (G)FSK/OOK/(G)MSK modulations is a development tool to learn and quickly develop low-power wide-area network (LPWAN) solutions.
The pack contains both an LPWAN end-node and its related gateway.
It is compatible with various LoRaWAN® network server providers.
P-NUCLEO-LRWAN2 is intended for countries granting radio-communications access in frequency bands higher than 800 MHz.
P-NUCLEO-LRWAN3 is same of the above but for 500MHz.
I-CUBE-LRWAN – LoRaWAN software expansion for STM32Cube (UM2073)
- P-NUCLEO-LRWAN1 – The KIT for make a LoRaWAN™ node.
This KIT contain two boards that are:
- I-NUCLEO-SX1272D (expansion board based on Semtech SX1272MB2xAS)
This tool, in association with the certified embedded software solution (I-CUBE-LRWAN), provides the means to set up a complete LoRaWAN™ node compliant with class A, based on the Semtech SX1272MB2xAS LoRa™ extension board.
The SW for LoraWAN is: I-CUBE-LRWAN
See the: UM2085 Ultra-low-power STM32 and LoRa® Nucleo pack with NUCLEO-L073RZ board and I-NUCLEO-SX1272D RF expansion board
See this video.
Please, see this short PDF
- KIT for make a test on Lora SX1272.
The kit is made using the following evaluation boards.
- B-L072Z-LRWAN1 – STM32L0 Discovery kit LoRa, low-power wireless
The B-L072Z-LRWAN1 LoRa®Discovery kit is a development tool to learn and develop solutions based on LoRa®and FSK/OOK technologies.
This Discovery kit features an all-in-one open module CMWX1ZZABZ-091 (by Murata).
The module is powered by an STM32L072CZ and an SX1276 transceiver.
The transceiver features the LoRa®long-range modem, providing ultra-long-range spread spectrum communication and high interference immunity, minimizing current consumption.
Since CMWX1ZZABZ-091 is an open module, user has access to all STM32L072 peripherals such as ADC, 16-bit timer, LP-UART, I2C, SPI and USB 2.0 FS (supporting BCD and LPM).
The B-L072Z-LRWAN1 Discovery kit includes an ST-LINK/V2-1 embedded debug tool interface, LEDs, push-buttons, antenna, Arduino™Uno V3 connectors and USB OTG connector in Micro-B format.
The LoRaWAN™stack is certified class A and C compliant.
It is available in I-CUBE-LRWAN firmware package.
Several examples, as an AT-command stack, Ping-Pong, etc, are available to help users setting up a complete LoRaWAN™node.
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- PingPong test based on:
STM32 (NUCLEO-F401RE) + LoRa (Semtech – SX1272 – I-NUCLEO-SX1272D) under mBED
The ready to use kit is: P-NUCLEO-LRWAN1
If one just takes the radio part of the kit is: I-CORE-SX1272D
- STM32H7, LoRA Demos Draw a Crowd at ARM TechCon
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