LoRa Ra-02 Module begin and beginPacket not working in Arduino Nano

Question

Here there, recently I am testing Lora Ra-02 module I saw many videos and it is easy to set up, according to this schematic:

LoRa SX1278 Module-----Arduino Nano Board

3.3V-------

Gnd---------Gnd

En/Nss------D10

G0/DIO0------D2

SCK---------D13

MISO----------D12

MOSI----------D11

RST-------------D9

I am using a very common library called sandeepmistry. and I tried this code:

#include <SPI.h>
#include <LoRa.h>

int counter = 1;

void setup() {
  Serial.begin(9600);
  while (!Serial);
  Serial.println("LoRa Sender");
  if (!LoRa.begin(433E6)) {
    Serial.println("Starting LoRa failed!");
    while (1);
  }
}

void loop() {
  Serial.print("Sending packet: ");
  Serial.println(counter);
  // send packet
  LoRa.beginPacket();
  LoRa.print("hello ");
  LoRa.print(counter);
  LoRa.endPacket();
  counter++;
  delay(500);
}

When I run it, it just sticks in this line {Serial.println("Starting LoRa failed!");}

Then I updated the code and tried to reduce the SPI Frequency because I am using Arduino Nano now the code is this:

#include <SPI.h>
#include <LoRa.h>

int counter = 1;
int frequency = 8E6; // Set the desired frequency here

void setup() {
  Serial.begin(9600);
  while (!Serial);
  Serial.println("LoRa Sender");
  LoRa.setSPIFrequency(frequency); // Add the missing semicolon here
  if (!LoRa.begin(433E6)) {
    Serial.println("Starting LoRa failed!");
    while (1);
  }
}

void loop() {
  Serial.print("Sending packet: ");
  Serial.println(counter);
  // send packet
  LoRa.beginPacket();
  LoRa.print("hello ");
  LoRa.print(counter);
  LoRa.endPacket();
  counter++;
  delay(500);
}

This code passes the line Starting LoRa failed! but it again stuck in here

LoRa Sender Sending packet: 1

So why won't it do LoRa.beginPacket(); and loop the code? Why does it stop here?

Answer 1

Have you set the pins properly? Try doing:

  LoRa.setPins(csPin, resetPin, irqPin);// set CS, reset, IRQ pin

There is a problem with the way your SX1276 is connected to the board, which is why .begin() returns false.