LoRa Basics™ Modems: Walk-through


This guide walks you through the steps required for an end-to-end demonstration of Semtech’s portfolio of LoRa Basics™ products and explains how to set up all required servers. It also provides several sample applications.

Compatible Products:

  • LoRa Basics™ Modem (and all devices compatible with LoRa Basics Modem)

  • LoRa Basics™ Modem-E (LoRa Edge™ Platform)

Sample Applications:

  • Temperature graph

  • File upload

  • Geolocation (LoRa Basics Modem-E)

Architecture & Data Flow

Data flow

Figure 1: Data Flow

LoRa Basics Modem-E works in the same manner as other end devices built with LoRa® chipsets. All traffic related to device management occurs at the application layer (default port: 199). In the background, the modems use this traffic to:

  • Update data selected by the user, such as the power consumption and the reset counter

  • Answer requests triggered by an API call to the LoRa Cloud™ Modem & Geolocation Services

  • Keep the GNSS almanac up-to-date to ensure smooth GNSS operations.


Because all device management traffic happens at the application layer, the application server must forward uplinks and downlinks between the LoRaWAN® network server and the LoRa Cloud Modem & Geolocation Services.