for both sides I am using USB cable for both arduinos from laptop...i noticed when i am using serial monitor and turn on switch 1 it reacts on serial monitor on transmitter side, so switch state is changed, but on receiver side is received nothing....when i repeat the process first go to off and again to on, then relay is turned on or off,...and then everything is working several times but suddenly it misses to turn off or turn on relay and then it works 4-5 times normally and then again miss to turn or off etc...thats why i wanted to have on transmitter side proof that relay is really turned on when switch is turned on
here are the pics and codes for both sides:
transmitter code
#include <LoRa.h>
//int pot = A0;
const int SW1 = 3;
const int SW2 = 4;
int SyncWord = 0x22;
void setup() {
Serial.begin(9600);
pinMode(SW1,INPUT_PULLUP);
pinMode(SW2,INPUT_PULLUP);
cli(); //stop interrupts
//set timer1 interrupt at 1Hz = 1sec
TCCR1A = 0; // set entire TCCR1A register to 0
TCCR1B = 0; // same for TCCR1B
TCNT1 = 0; // initialize counter value to 0
// set compare match register for 1hz increments
OCR1A = 15624; // = (1610^6) / (11024) - 1 (must be <65536)
TCCR1B |= (1 << WGM12); // turn on CTC mode
TCCR1B |= (1 << CS12) | (1 << CS10); // Set CS10 and CS12 bits for 1024 prescaler
TIMSK1 |= (1 << OCIE1A); // enable timer compare interrupt
sei(); //allow interrupts
while (!Serial);
Serial.println("LoRa Sender");
if (!LoRa.begin(433E6)) { // or 915E6, the MHz speed of yout module
Serial.println("Starting LoRa failed!");
while (1);
}
LoRa.setSpreadingFactor(12); // ranges from 6-12,default 7 see API docs
LoRa.setSignalBandwidth(62.5E3 ); // for -139dB (page - 112)
LoRa.setCodingRate4(8); // for -139dB (page - 112)
LoRa.setSyncWord(SyncWord);
/*
Serial.print("current spreading factor : ");
Serial.println(LoRa.getSpreadingFactor());
Serial.print("current bandwidth : ");
Serial.println(LoRa.getSignalBandwidth());
Serial.println("LoRa init succeeded.");
*/
}
int priviousSwitchValue1 = 1;
int priviousSwitchValue2 = 1;
int liveSwitchValue1 = 0;
int liveSwitchValue2 = 0;
bool switchPressFlag1 = false;
bool switchPressFlag2 = false;
bool gLedPin = 0;
int data = 1;
void loop() {
//static int data = 1;
liveSwitchValue1 = digitalRead(SW1);
if( (liveSwitchValue1 == 0) and (switchPressFlag1 == false) )
{
delay(50);
data = 11;
Serial.println("11");
switchPressFlag1 = true;
priviousSwitchValue1 = !priviousSwitchValue1;
LoRa.beginPacket();
LoRa.print(data);
LoRa.endPacket();
}
if( (liveSwitchValue1 == 1) and (switchPressFlag1 == true) )
{
delay(50);
data = 22;
Serial.println("22");
switchPressFlag1 = false;
LoRa.beginPacket();
LoRa.print(data);
LoRa.endPacket();
}
liveSwitchValue2 = digitalRead(SW2);
if( (liveSwitchValue2 == 0) and (switchPressFlag2 == false))
{
delay(50);
data = 33;
Serial.println("33");
switchPressFlag2 = true;
priviousSwitchValue2 = !priviousSwitchValue2;
LoRa.beginPacket();
LoRa.print(data);
LoRa.endPacket();
}
if( (liveSwitchValue2 == 1) and (switchPressFlag2 == true) )
{
delay(50);
data = 44;
Serial.println("44");
switchPressFlag2 = false;
LoRa.beginPacket();
LoRa.print(data);
LoRa.endPacket();
}
if(gLedPin == 1)
{
data = 55;
Serial.println("55");
gLedPin = 0;
LoRa.beginPacket();
LoRa.print(data);
LoRa.endPacket();
}
// LoRa.beginPacket();
// LoRa.print(data);
// LoRa.endPacket();
}
ISR(TIMER1_COMPA_vect){//timer1 interrupt 1Hz toggles pin 13 (LED)
//generates pulse wave of frequency 1Hz/2 = 0.5kHz (takes two cycles for full wave- toggle high then toggle low)
static volatile int ledFlag = 0;
if(++ledFlag >= 5)
{
gLedPin = 1;
ledFlag = 0;
}
}
receiver picture with code
#include <LoRa.h>
const int LED1 = 3; // indicator LED
const int RLY1 = 4; // relay 1
const int RLY2 = 5; // relay 2
String inString = ""; // string to hold input
int val = 0;
int SyncWord = 0x22;
void setup() {
Serial.begin(9600);
pinMode(LED1,OUTPUT);
pinMode(RLY1,OUTPUT);
pinMode(RLY2,OUTPUT);
digitalWrite(LED1 , LOW);
digitalWrite(RLY1 , HIGH);
digitalWrite(RLY2 , HIGH);
while (!Serial);
Serial.println("LoRa Receiver");
if (!LoRa.begin(433E6)) { // or 915E6
Serial.println("Starting LoRa failed!");
while (1);
}
LoRa.setSpreadingFactor(12); // ranges from 6-12,default 7 see API docs
LoRa.setSignalBandwidth(62.5E3); // for -139dB (page - 112)
LoRa.setCodingRate4(8); // for -139dB (page - 112)
LoRa.setSyncWord(SyncWord); // ranges from 0-0xFF, default 0x12, see API docs
/*
Serial.print("current spreading factor : ");
Serial.println(LoRa.getSpreadingFactor());
Serial.print("current bandwidth : ");
Serial.println(LoRa.getSignalBandwidth());
Serial.println("LoRa init succeeded.");
*/
}
bool i=0;
int priviousValue = 0;
int liveValue = 0;
void loop() {
// try to parse packet
int packetSize = LoRa.parsePacket();
if (packetSize) {
// read packet
while (LoRa.available())
{
int inChar = LoRa.read();
inString += (char)inChar;
val = inString.toInt();
digitalWrite(LED1 , HIGH);
delay(10);
digitalWrite(LED1 , LOW);
delay(10);
}
inString = "";
LoRa.packetRssi();
}
Serial.println(val);
liveValue = val;
if(priviousValue != liveValue)
{
priviousValue = liveValue;
if(val == 11)
{
digitalWrite(RLY1 , LOW);
}
if(val == 22)
{
digitalWrite(RLY1 , HIGH);
}
if(val == 33)
{
digitalWrite(RLY2 , LOW);
}
if(val == 44)
{
digitalWrite(RLY2 , HIGH);
}
}
delay(50);
}
/*
-
- when switch 1 is pressed turn ON RLY1 & RLY2
-
- if
*/
