A Python Library for LoRa PHY Communication

December 22, 2023

LoRa (Long Range) is a wireless communication technology that enables long-range, low-power data transmission. It has gained significant popularity in applications such as IoT (Internet of Things), smart cities, agriculture, and environmental monitoring. However, working with LoRa can be complex, requiring specialized hardware and protocols. That’s where the rf95modem-py Python library comes in.

Introducing rf95modem-py

rf95modem-py is a powerful Python library that simplifies the process of sending and receiving data over LoRa PHY (physical layer). It provides a seamless interface to interact with a LoRa modem connected via a serial connection. Whether you’re a beginner or an experienced developer, rf95modem-py speeds up the development process and allows you to focus on building innovative applications.

Installing rf95modem-py

Getting started with rf95modem-py is easy. Simply install the library from PyPI using the following command:

pip install --upgrade rf95modem

Using rf95modem-py

The rf95modem-py library provides a Rf95Reader class that allows direct interaction with a connected rf95modem. You can make configuration changes, send and receive raw LoRa PHY messages, and perform various LoRa operations using this class.

To demonstrate the ease of use, consider the code example below:

“`python
import serial
import serial.threaded
import sys
import time
import threading

import rf95modem

if name == “main“:
ser = serial.serial_for_url(“/dev/ttyUSB0”, baudrate=115200, timeout=1)
with serial.threaded.ReaderThread(ser, rf95modem.Rf95Reader) as rf95:
rf95.rx_handlers.append(lambda rx: print(rx))

    rf95.mode(rf95modem.ModemMode.MEDIUM_RANGE)
    rf95.frequency(868.1)

    print(rf95.status_fetch())

    try:
        rf95.gps_mode(True)
        print(rf95.gps_fetch())
    except rf95modem.Rf95UnknownCommandException:
        print("Seems like there is no GPS support")

    rf95.transmit(b"hello world")

    threading.Event().wait()

“`

In this example, we import the necessary modules and classes, establish a serial connection with the rf95modem, configure the modem’s mode and frequency, fetch its status, enable GPS mode (if supported), and transmit a message.

Documentation and Resources

To explore detailed documentation for rf95modem-py, you can install pdoc3 and generate documentation locally. Here are the steps:

“`
pip install –upgrade pdoc3

cd src
pdoc –http 127.0.0.1:8080 rf95modem
xdg-open http://127.0.0.1:8080/
“`

Additionally, you can refer to the rf95modem-py PyPI page and the official rf95modem repository for more information and updates.

Conclusion

rf95modem-py is a versatile Python library for sending and receiving data over LoRa PHY. Its intuitive interface, comprehensive documentation, and extensive functionality make it a valuable tool for developers building LoRa-based applications. Whether you’re exploring IoT possibilities or implementing smart city solutions, rf95modem-py provides the necessary tools to leverage the power of LoRa communication. Install the library today and unlock the potential of LoRa for your projects.

category: Wireless Communication

tags: LoRa, LoRa PHY, Internet of Things, Python, rf95modem, Library, Serial Communication, Data Transmission

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