LoRaE5 Python Code for P2P Communication

This Python code is designed to facilitate P2P communication using a LoRaE5 module on a Raspberry Pi OS (Linux), leveraging the UART functionality for serial communication. The code provides a framework for sending and receiving data over LoRa, including setup, message formatting, and handling.

Prerequisites

• A Raspberry Pi with Raspberry Pi OS installed.
• A LoRaE5 module connected to the Raspberry Pi via UART.
• Python 3.x installed on the Raspberry Pi.

Key Components of the Code

• Serial Communication Setup: Establishes communication with the LoRaE5 module using the serial library.

Steps to Implement P2P Communication

1. Hardware Setup:

   • Connect the LoRaE5 module to the Raspberry Pi via the UART pins.
   • Ensure the module is powered and correctly wired to the Pi's GPIO pins for serial communication.

2. Software Setup:

   • Install necessary Python libraries: pySerial for serial communication and threading for concurrent operations.
   • Define the communication parameters, such as the baud rate and serial port, matching your hardware setup.

3. Send a Message:

   • Use the fetch or command method to send a message.

Example Use Case

Switch Mode

from loracap.LoRaMode import *

class Switch(LoRaMode):
    def __init__(self):
        super(LoRaMode, self).__init__()
    def handle_line(self, line):
        """
        We don't need any events for this example.
        """
        self.responses.put(line)
 
ser = serial.serial_for_url('/dev/ttyS0', baudrate=9600, timeout=1)
with serial.threaded.ReaderThread(ser, Switch) as lorae5:
   print(f"Current Mode: {lorae5.mode}")
   
   print("Change to LWOTAA Mode")
   lorae5.mode = 'LWOTAA'
   
   print("Change to LWABP Mode")
   lorae5.mode = 'LWABP'

   print("Change to TEST Mode")
   lorae5.mode = 'TEST'
   print(f"Current Mode: {lorae5.mode}")

Current Mode: LWOTAA
Change to LWOTAA Mode
Change to LWABP Mode
Change to TEST Mode
Current Mode: TEST

Update Credential of LoRa-E5

from loracap.LoRaMode import *

ser = serial.serial_for_url('/dev/ttyS0', baudrate=9600, timeout=1)
read_thread = serial.threaded.ReaderThread(ser, LoRaTESTMode)
read_thread.start()
_thread, lorae5 = read_thread.connect()

print("Credentials: \n{}\n".format(lorae5)) 

print("Updating credentials...")
# lorae5.DevEui = '2CF7F12053700006'
lorae5.DevEui = '2C:F7:F1:20:53:70:00:06'
# lorae5.DevAddr = '3230C9A3'
lorae5.DevAddr = '32:30:C9:A3'
# lorae5.AppEui = '8000000000000009'
lorae5.AppEui = '80:00:00:00:00:00:00:09'

print("Credentials updated!\n{}".format(lorae5))

Credentials: 
DevEui: 2C:F7:F1:20:53:77:88:99, DevAddr: 42:33:55:A4, AppEui: 80:00:00:00:FF:00:00:10

Updating credentials...
Credentials updated!
DevEui: 2C:F7:F1:20:53:70:00:06, DevAddr: 32:30:C9:A3, AppEui: 80:00:00:00:00:00:00:09

Virtual Environment Usage

This project is managed with Poetry, which supports both virtual environments for isolation and direct system-wide installation. You can choose the approach that best fits your workflow.

Without Using a Virtual Environment

If you prefer not to use a virtual environment, ensure your system has the required Python version and dependencies. This method may lead to conflicts with other Python projects or system packages.

Install Poetry

To install Poetry, execute:

curl -sSL https://install.python-poetry.org | python3 -

Setup the Project with a Virtual Environment

1. Install Dependencies: In the project directory, run:

   poetry install

   This command installs dependencies and optionally sets up a virtual environment.

2. Activate the Virtual Environment: To avoid conflicts with the system-wide Python interpreter and ensure project dependencies are managed separately, activate the virtual environment:

   poetry shell

Using a virtual environment is recommended to isolate project dependencies, providing a controlled development environment and minimizing potential conflicts.

For more details, visit Poetry's official documentation.