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This repository contains the software library LoRa@FIIT for Arduino. This library is the implementation of the LoRa@FIIT protocol. The library uses external library RadioHead,source codes of the XXTEA algorithm and the code of the Diffie-Hellman key exchange.

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LoRa@FIIT Arduino Library

This is an Arduino library for LoRa@FIIT communication using the LoRa Radio Node 1.0 at 868 MHz.

Installation

To use this library, you'll need PlatformIO IDE installed. Add the following line to your platformio.ini dependencies:

lib_deps =
   LoRa@FIIT

Usage

Initializing LoRa

#include <lora.h>

// Define your pins
#define RFM95_CS 10
#define RFM95_INT 2
#define RFM95_RST 9

lora LoRa(RFM95_CS, RFM95_INT, RFM95_RST);

void setup() {
  LoRa.On();       // Reset and initialize the chip
  LoRa.SetDefault(); // Set default settings
}

void loop() {
  // Your LoRa communication code here
}

API Reference

Class lora

Constructor

lora(uint8_t slaveSelectPin, uint8_t interruptPin, uint8_t resetPin);

Initialize LoRa module with the specified pins.

Methods

  • void On(): Reset and initialize the chip.
  • void SetDefault(): Set default LoRa settings.
  • bool SetBW(float bandwidth): Set the bandwidth.
  • bool SetCR(uint8_t codingRate): Set the coding rate.
  • bool SetSF(uint8_t spreadingFactor): Set the spreading factor.
  • bool SetFrequency(float frequency): Set the operating frequency.
  • bool SetPW(uint8_t power, bool useRF0): Set the transceiver power.
  • void Awake(): Turn on the LoRa module.
  • void Sleep(): Put the LoRa module to sleep.
  • bool Send(uint8_t* data, uint8_t &len): Send basic data message with ACK.
  • bool Send(uint8_t type, uint8_t ack, uint8_t* data, uint8_t &len): Send a specific message.
  • bool SendHello(uint8_t* data, uint8_t &len): Send a "Hello" message.
  • bool SendEmergency(uint8_t* data, uint8_t &len): Send an emergency message.
  • unsigned long Getsendtime(): Get the time when the message was sent.
  • uint8_t Receive(uint8_t* buf, uint8_t &len): Turn on receiving mode.
  • bool Register(uint8_t* buffer, uint8_t &len): Register the device.
  • unsigned long GetDutyWait(): Get the wait time due to duty cycle.
  • uint32_t WaitDutyCycle(uint8_t len, float bw, uint8_t sf, uint8_t cr, uint8_t type): Handle duty cycle.

Private Members (selected)

  • bool _manual: Flag for manual mode.
  • uint8_t currentSF: Current spreading factor.
  • float bwDC: Current bandwidth.
  • uint8_t percentageDC: Current duty cycle percentage.
  • uint8_t crDC: Current coding rate.
  • uint8_t sfDC: Current spreading factor.
  • uint8_t pwDC: Current power.
  • DH dhkey1: Diffie-Hellman key instance.
  • uint16_t _sequence_number: Current sequence number.
  • unsigned long _sendtime: Time when the message was sent.

License

See the LICENSE file for details.

Credits

  • Author: Simon Štefunko, Alexander Valach, Michal Greguš

About

This repository contains the software library LoRa@FIIT for Arduino. This library is the implementation of the LoRa@FIIT protocol. The library uses external library RadioHead,source codes of the XXTEA algorithm and the code of the Diffie-Hellman key exchange.

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