**LoRa Messaging** rev_14

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    - Project: **LoRa Messaging**
    - Source Code NOT compiled for: Arduino Uno
    - Source Code created on: 2024-11-29 23:06:25

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* configure a lora gateway */
/****** END SYSTEM REQUIREMENTS *****/


/********* User code review feedback **********
#### Feedback 1 ####
- send periodically a message to a specific receiver
********* User code review feedback **********/

/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <SPI.h>
#include <LoRa.h>   //https://github.com/sandeepmistry/arduino-LoRa

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void updateOutputs(void);
void sendMessage(void); // New function prototype for sending messages

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t module_SX127x_DIO0_PIN_D3     = 3;

/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t module_SX127x_NRESET_PIN_D2       = 2;

/***** DEFINITION OF SPI PINS *****/
const uint8_t module_SX127x_SPI_PIN_MOSI_D11        = 11;
const uint8_t module_SX127x_SPI_PIN_MISO_D12        = 12;
const uint8_t module_SX127x_SPI_PIN_SCLK_D13        = 13;
const uint8_t module_SX127x_SPI_PIN_CS_D10      = 10;

/***** DEFINITION OF OUTPUT RAW VARIABLES *****/
/***** used to store raw data *****/
bool    module_SX127x_NRESET_PIN_D2_rawData     = 0;

/***** DEFINITION OF OUTPUT PHYSICAL VARIABLES *****/
/***** used to store data after characteristic curve transformation *****/
float   module_SX127x_NRESET_PIN_D2_phyData     = 0.0;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/

void setup(void)
{
    // put your setup code here, to run once:

    pinMode(module_SX127x_DIO0_PIN_D3,  INPUT);
    pinMode(module_SX127x_NRESET_PIN_D2,    OUTPUT);
    pinMode(module_SX127x_SPI_PIN_CS_D10,   OUTPUT);

    // start the SPI library:
    SPI.begin();

    // Initialize LoRa module
    LoRa.setPins(module_SX127x_SPI_PIN_CS_D10, module_SX127x_NRESET_PIN_D2, module_SX127x_DIO0_PIN_D3); // Set CS, RESET, and DIO0 pins
    if (!LoRa.begin(915E6)) { // Initialize LoRa at 915 MHz
        while (1); // If failed, do nothing
    }
}

void loop(void)
{
    // put your main code here, to run repeatedly:

    updateOutputs(); // Refresh output data
    sendMessage();    // Send message periodically
}

void updateOutputs()
{
    digitalWrite(module_SX127x_NRESET_PIN_D2, module_SX127x_NRESET_PIN_D2_rawData);
}

void sendMessage()
{
    LoRa.beginPacket(); // Start a new packet
    LoRa.print("Hello, Receiver!"); // Message to send
    LoRa.endPacket(); // Finish the packet and send it
}

/* END CODE */