https://github.com/phfbertoleti/gnss_lorawan_tracker

Repository of a GNSS LoRaWAN tracker, using Zephyr RTOS as embedded operating system.
https://github.com/phfbertoleti/gnss_lorawan_tracker

connectivity esp32 gnss gps internetofthings iot lorawan tracker zephyr zephyr-rtos

Last synced: about 1 year ago
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Repository of a GNSS LoRaWAN tracker, using Zephyr RTOS as embedded operating system.

• Host: GitHub
• URL: https://github.com/phfbertoleti/gnss_lorawan_tracker
• Owner: phfbertoleti
• License: apache-2.0
• Created: 2024-01-01T21:07:18.000Z (over 2 years ago)
• Default Branch: main
• Last Pushed: 2024-01-01T21:51:03.000Z (over 2 years ago)
• Last Synced: 2024-10-24T16:49:27.246Z (over 1 year ago)
• Topics: connectivity, esp32, gnss, gps, internetofthings, iot, lorawan, tracker, zephyr, zephyr-rtos
• Language: C
• Homepage:
• Size: 3.76 MB
• Stars: 21
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# GNSS LoRaWAN tracker

This repository contains a project of a tracker device, which uses GNSS to obtain location and LoRaWAN as connectivity to upload tracker messages to the cloud.

This project uses Zephyr as RTOS.

![Project board](/Photos/photo_1.jpg)

## Main features

The main features of this project are:

* Obtain latitude and longitude coordinates generated by a GPS/GNSS module over UART (9600/8/N/1). All GPS/GNSS modules that use NMEA messages will do.

* Send LoRaWAN messages (ABP mode) using Smart Modular LoRaWAN module (https://ziliatech.com/iot/), which bahaves like a modem, controlled via AT commands (9600/8/N/1).

* Reads ignition status (on/off) and time spent with ignition on (in milisseconds)

* Reads GNSS fix status

* All logs messages are handled by Zephyr RTOS Logging subsystem

* Periodically send a LoRaWAN message containing latitude (4 bytes, float format), longitude (4 bytes, float format) and a status byte. 

This status byte contains ignition status (on/off) at bit 0 and GNSS fix status at bit 1.

The time interval between sending two consecutive LoRaWAN messages can be adjusted by CONFIG_GNSS_MANAGER_TIME_TO_SEND_LORAWAN_MESSAGE (see Kconfig for more details)

## LoRaWAN credentials

Before successfully send any LoRaWAN message, you need to set LoRaWAN credentials. As this projects uses LoRaWAN in ABP mode, the following credentials must be set:

* Device address: set this in CONFIG_LORAWAN_UART_SMARTMODULAR_DEVADDR (set Kconfig for more details)

* Application Session Key: set this in CONFIG_LORAWAN_UART_SMARTMODULAR_APPSKEY (set Kconfig for more details)

* Network Session Key: set this in CONFIG_LORAWAN_UART_SMARTMODULAR_NWKSKEY (set Kconfig for more details)

* Application EUI:  set this in CONFIG_LORAWAN_UART_SMARTMODULAR_APPEUI (set Kconfig for more details)

## Compatible hardwares

At this moment, there are oveelays that makes it available to compile this project for the following microcontrollers:

* ESP32 WROOM 32 (Xtensa architecture)

For ESP32 WROOM 32, wire the peripherals as described below:

- Breathing Light (led): GPIO 18

- Ignition switch: GPIO 4

- GNSS module (UART 1): GPIO 25 (TX) and GPIO 26 (RX)

- LoRaWAN module (UART 2): GPIO 23 (TX) and GPIO 5 (RX)

## How to compile this project

Assuming this code is placed into zephyrproject/zephyr folder, you can compile it by doing the following:

* For ESP32 WROOM, use the following command for compiling this project:

``

west build -p always -b esp32_devkitc_wroom gnss_lorawan_tracker/

``

And for flashing, simply use:

``

west flash

``