Live Testing of Long Range LoRa SX1278 with Arduino Customized Atmega328 with working code DIY

First of all we define the SPI library for arduino. 

#include
#include

We include the LoRa library and define the LoRa module pin as SS to 10, rst as 9 and DIO0 as 2. 

#define ss 10
#define rst 9
#define dio0 2

We take counter 0 as integer type, so that we can send counter value to the LoRa receiver every second.

int counter = 0;

In the setup mode, we begin the serial port at 9600 baud rate.  While we start the serial monitor, it serially displays the message “Lora Sender tested by SME Dehradun”. 

void setup() {
//initialize Serial Monitor
Serial.begin(9600);
while (!Serial);
Serial.println(“LoRa Sender Tested by SME Dehradun “);

We setup the Lora module pins by defining the command lora.setpins ss, rst and DIO0. 

//setup LoRa transceiver module
LoRa.setPins(ss, rst, dio0);

After it we write the command to initialize the LoRa Module at 433MHz by command Lora.begin. If it’s found the LoRa Module connected to Arduino or customized board, then it displays the message serially that “LoRa   Initializing Ok” otherwise displays “Starting LoRa failed”.

if (!LoRa.begin(433E6)) {
Serial.println(“Starting LoRa failed!”);
while (1);
}

LoRa.setSyncWord(0xF3);
Serial.println(“LoRa Initializing OK!”);
}

After it we set the synchronizing word for the receiver module so that when LoRa Receiver receives the data packet after synchronizing this word.

Now inside the loop function, we serially print the counter value and then begin the LoRa Packet with LoRa.beginPacket function. 

void loop() {
Serial.print(“Sending packet: “);
Serial.println(counter);

And write inside the packet space counter value. After it we end the LoRa packet with the Lora.endPacket command.  

void loop() {
Serial.print(“Sending packet: “);
Serial.println(counter);

We  increment the counter every second so that every time LoRa packet sends with incremented value.

counter++;

Now, Upload the program to transmitter.