Designed for use with the Adafruit RFM9X LoRa breakout board.
This repository provides scripts/services for a pi acting as a LoRa transmitter, and a LoRa receiver.
The service provided for the pi configured to transmit data over LoRa has a local web service running on port 3000.
The local web service allows API calls to be made from other programs/services/scripts on the Pi, which are then forwarded to the other raspberry pi (RX) over LoRa.
To send data, send a json object with the appropriate data in a post request:
Python Example:
import requests,json
headers = {'Content-Type': 'application/json'}
body = {'Predicted_Sound__c': 'Chainsaw', 'Device_Number__c': 'ABC123', 'Volume__c': 26.72}
endpoint = 'http://localhost:3000'
requests.post(endpoint,data=json.dumps(body),headers=headers)
The service provided for the pi configured to receive data over LoRa is a python script that listens and receives packets from the RFM9X module. The receive-lora.py script can be modified to take other actions based on the data received.
These libraries/modules use Python 3, so be sure python3 and pip3 both work.
sudo apt-get update
sudo apt-get upgrade
sudo pip3 install --upgrade setuptools
(sudo apt-get install python3-pip if the above does not work)
Run raspi-config and under Interfacing Options --> Advanced Options enable the SPI interface then reboot the pi
pip3 install RPI.GPIO
pip3 install adafruit-circuitpython-rfm9x
Run the rfm9x-check script in the scripts/ directory:
python3 scripts/rfm9x-check.py
If everything is setup correctly, you should see the following output
RFM9x: Detected
RFM9x: Detected
RFM9x: Detected
RFM9x: Detected
RFM9x: Detected
RFM9x: Detected
RFM9x: Detected
RFM9x: Detected
RFM9x: Detected
RFM9x: Detected
If you see RFM9x: ERROR check your connections.
To install/configure the services on the pi used to transmit data:
sudo make install
To install/configure the services on the pi used to receive data:
sudo make install.rec
To uninstall the services on the pi used to transmit data:
sudo make uninstall
To uninstall the services on the pi used to receive data:
sudo make uninstall.rec
https://learn.adafruit.com/circuitpython-on-raspberrypi-linux/installing-circuitpython-on-raspberry-pi
https://learn.adafruit.com/lora-and-lorawan-radio-for-raspberry-pi/rfm9x-raspberry-pi-setup