LoRa/LoRaWAN tutorial 20: LoRa End Node Libraries

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This is part 20 of the LoRa/LoRaWAN tutorial.

In this video series different topics will be explained which will help you to understand LoRa/LoRaWAN.
It is recommended to watch each video sequentially as I may refer to certain LoRa/LoRaWAN topics explained earlier.

In this video I will explain the origins of several LoRa end nodes libraries and where these libraries are used.

There are several important LoRa end node libraries.
Semtech LoRaMac-node library
IBM LMIC library (Note: LMIC stands for LoraMAC-in-C)
Arduino LMIC library
Besides the above mentioned libraries, LoRa development board manufacturers also created their own libraries to be used on their hardware.

Semtech maintains a reference implementation of a LoRa end node.
The code can be found at this location:
https://github.com/Lora-net/LoRaMac-node
API documentation can be found at:
http://stackforce.github.io/LoRaMac-doc/
This LoRa node library only supports the following platforms: NAMote72, NucleoLxx, SKiM880B, SKiM980A, SKiM881AXL and SAML21.
A porting guide is available which provides guide lines on how to port the project to other platforms, see:
http://stackforce.github.io/LoRaMac-d...

The IBM LMIC library was originally developed by the IBM Zurich Research Laboratory.
IBM has ceased development on this library since version 1.6 (13th July 2015), however it is provided as open source under the BSD License.
The code can be found at this location:
https://www.zurich.ibm.com/pdf/lrsc/l... or
https://github.com/lmic-lib/lmic
This library does not support Arduino platforms.

The IBM LMIC library is ported to Arduino platforms and is called Arduino LMIC.
This library supports SX1272, SX1276 transceivers and compatible modules such as HopeRF RFM92/RFM95 modules.
The code can be found at this location:
https://github.com/matthijskooijman/a... are maintained by Matthijs Kooijman, Thomas Telkamp, and others.
The Arduino LMIC library provides a fairly complete LoRaWAN Class A and Class B implementation, supporting the EU-868 and US-915 bands.
The compiled size of this library is about 30kBytes.

The Arduino LMIC library is forked many times but the fork made by MCCI Catena seems to be actively maintained.
https://github.com/mcci-catena/arduin...
Among others, the MCCI Arduino LMIC has added regional support for Australia (921 MHz), Asia (923 MHz) and India (866 MHz).

The Arduino LMIC and the MCCI Arduino LMIC library are intended to be used with plain LoRa transceivers, connecting to them using SPI (Serial Peripheral Interface).
This library contains a full LoRaWAN stack and is intended to drive these transceivers directly.
The library has only been tested with LoRaWAN 1.0.2 networks.
The library can not be used with full-stack devices like the Microchip RN2483.
These modules contains a transceiver and microcontroller that implements the LoRaWAN stack and exposes a high-level serial interface instead of a low-level SPI transceiver interface.

To understand how the Arduino LMIC library works:
IBM LoRaWAN in C Technical Specification
https://github.com/matthijskooijman/a...
Semtech SX1272/73 Datasheet
https://www.semtech.com/uploads/docum...
Semtech SX1276-7-8-9 Datasheet
https://www.semtech.com/uploads/docum...

Other Arduino LoRa end node libraries can be found at:
https://www.arduinolibraries.info/lib...

Please note:
There are libraries available to setup direct communication between two LoRa radio’s.
These libraries have nothing to do with the LoRaWAN protocol.

Check out all my other LoRa/LoRaWAN tutorial videos:
   • LoRa/LoRaWAN tutorials  

Subscribe to my YouTube channel:
   / @mobilefish  

The presentation used in this video tutorial can be found at:
https://www.mobilefish.com/developer/...

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