Multi Button Relay Sketch

[rayan]

@pepson
i am beginner and i hope some one help to you

[pepson]

Maybe @Boots33 or @SGi help us please

[korttoma]

Here is an example that I'm using with 4 relays and 4 monostable buttons:

// Enable debug prints to serial monitor
#define MY_DEBUG

// Enable and select radio type attached
#define MY_RADIO_NRF24

#define SN "RelayButtonArray"
#define SV "1.0"

#include <MySensors.h>
#include <SPI.h>
#include <Bounce2.h>
#define RELAY_ON 0                      // switch around for ACTIVE LOW / ACTIVE HIGH relay
#define RELAY_OFF 1
//

#define noRelays 4                     //2-4
const int relayPin[] = {14, 15, 16, 17};       //  switch around pins to your desire
const int buttonPin[] = {6, 7, 4, 5};   //  switch around pins to your desire

class Relay             // relay class, store all relevant data (equivalent to struct)
{
  public:
    int buttonPin;                   // physical pin number of button
    int relayPin;             // physical pin number of relay
    boolean relayState;               // relay status (also stored in EEPROM)
};

Relay Relays[noRelays];
Bounce debouncer[noRelays];
MyMessage msg[noRelays];

/*
  void before() {
  for (int sensor=1, pin=RELAY_1; sensor<=NUMBER_OF_RELAYS;sensor++, pin++) {
    // Then set relay pins in output mode
    pinMode(pin, OUTPUT);
    // Set relay to last known state (using eeprom storage)
    digitalWrite(pin, loadState(sensor)?RELAY_ON:RELAY_OFF);
  }
  }*/

void setup() {
  wait(100);
  // Initialize Relays with corresponding buttons
  for (int i = 0; i < noRelays; i++) {
    Relays[i].buttonPin = buttonPin[i];              // assign physical pins
    Relays[i].relayPin = relayPin[i];
    msg[i].sensor = i;                                   // initialize messages
    msg[i].type = V_LIGHT;
    pinMode(Relays[i].buttonPin, INPUT_PULLUP);
    wait(100);
    pinMode(Relays[i].relayPin, OUTPUT);
    Relays[i].relayState = loadState(i);                               // retrieve last values from EEPROM
    digitalWrite(Relays[i].relayPin, Relays[i].relayState ? RELAY_ON : RELAY_OFF); // and set relays accordingly
    send(msg[i].set(Relays[i].relayState ? true : false));                 // make controller aware of last status
    wait(50);
    debouncer[i] = Bounce();                        // initialize debouncer
    debouncer[i].attach(buttonPin[i]);
    debouncer[i].interval(30);
    wait(50);
  }
}

void presentation()
{
  // Send the sketch version information to the gateway and Controller
  sendSketchInfo(SN, SV);

  wait(100);

  for (int i = 0; i < noRelays; i++)
    present(i, S_LIGHT);                               // present sensor to gateway

  wait(100);
}


void loop()
{
  for (byte i = 0; i < noRelays; i++) {
    if (debouncer[i].update()) {
      
      int value = debouncer[i].read();
      
      if ( value == LOW) {
        Relays[i].relayState = !Relays[i].relayState;
        digitalWrite(Relays[i].relayPin, Relays[i].relayState ? RELAY_ON : RELAY_OFF);
        send(msg[i].set(Relays[i].relayState ? true : false));
        // save sensor state in EEPROM (location == sensor number)
        saveState( i, Relays[i].relayState );

      }

    }
  }
  //wait(20);
}

void receive(const MyMessage &message) {
  if (message.type == V_LIGHT) {
    if (message.sensor < noRelays) {          // check if message is valid for relays..... previous line  [[[ if (message.sensor <=noRelays){ ]]]
      Relays[message.sensor].relayState = message.getBool();
      digitalWrite(Relays[message.sensor].relayPin, Relays[message.sensor].relayState ? RELAY_ON : RELAY_OFF); // and set relays accordingly
      saveState( message.sensor, Relays[message.sensor].relayState ); // save sensor state in EEPROM (location == sensor number)
    }
  }
  wait(20);
}

[Boots33]

@pepson The sketch i have in my first post at the top of the page will work for a push button. the one you are using has been modified for use with a toggle switch.

[pepson]

ok i test your first sketch. But maybe you can create sketch where we can setvin sketch what button we want use ?

[korttoma]

I'm the sketch I'm using you can freely define what pins you want to use:

const int relayPin[] = {14, 15, 16, 17};       //  switch around pins to your desire
const int buttonPin[] = {6, 7, 4, 5};   //  switch around pins to your desire

[Boots33]

@rayan said:

this your code is good, but there is a small issue .button work just when the connection is ok (radio with gateway) ! and when radio is disconnect or controller is off, so button dont work handy . do you have any idea for this ? that when controller is off the button work handy

As far as I know that is the way Mysensors works at the moment, if the node boots up and cannot find the gateway then it wont run the loop part of the sketch.
If the gateway drops out after the node has booted then the loop part of the sketch will still run while the node tries to re-establish the connection. Because the sketch relies on an ACK back from the gateway to toggle the relay it still wont work if the gateway is down.

You could modify the sketch so it does not rely on the ACK. This would at least allow it to work if the gateway goes down after the node has booted.
Another way to ensure the switch will operate would be to add some circuit to override the node, like discussed Here

Have made a quick change to the sketch so it does not need the ACK. I have not tried it but give it a go and see if it works

#define MY_DEBUG
#define MY_RADIO_NRF24
#define MY_REPEATER_FEATURE

#include <SPI.h>
#include <MySensors.h>
#include <Bounce2.h>

#define RELAY_ON 1
#define RELAY_OFF 0

#define SSR_A_ID 1   // Id of the sensor child
#define SSR_B_ID 2   // Id of the sensor child

const int buttonPinA = 18;
const int buttonPinB = 19;
const int relayPinA = 5;
const int relayPinB = 6;
int oldValueA = 0;
int oldValueB = 0;
bool stateA = false;
bool stateB = false;
int trigger = 0;


Bounce debouncerA = Bounce();
Bounce debouncerB = Bounce();

MyMessage msgA(SSR_A_ID, V_STATUS);
MyMessage msgB(SSR_B_ID, V_STATUS);

void setup()
{

  pinMode(buttonPinA, INPUT_PULLUP); // Setup the button Activate internal pull-up
  pinMode(buttonPinB, INPUT_PULLUP); // Setup the button Activate internal pull-up
// Then set relay pins in output mode
  pinMode(relayPinA, OUTPUT);
  pinMode(relayPinB, OUTPUT);

  // After setting up the buttons, setup debouncer
  debouncerA.attach(buttonPinA);
  debouncerA.interval(5);
  debouncerB.attach(buttonPinB);
  debouncerB.interval(5);

  // Make sure relays are off when starting up
  digitalWrite(relayPinA, RELAY_OFF);
  digitalWrite(relayPinB, RELAY_OFF);
  

    /*--------------------- Added these lines for toggle switch-------------------------*/
  oldValueA = digitalRead(buttonPinA);  // set oldValueA to the current status of the toggle switch
  oldValueB = digitalRead(buttonPinB);  // set oldValueB to the current status of the toggle switch
 // send(msgA.set(false)); // Send off state for relayA to ensure controller knows the switch is off
 // send(msgB.set(false)); // Send off state for relayB to ensure controller knows the switch is off
  
}

void presentation()  {
  // Send the sketch version information to the gateway and Controller
  sendSketchInfo("Mains Controller", "1.0");

  // Register all sensors to gw (they will be created as child devices)
  present(SSR_A_ID, S_LIGHT);
  present(SSR_B_ID, S_LIGHT);

}

/*
   Example on how to asynchronously check for new messages from gw
*/
void loop()
{
if (trigger == 0){
  send(msgA.set(false)); // Send off state for relayA to ensure controller knows the switch is off
  send(msgB.set(false)); // Send off state for relayB to ensure controller knows the switch is off
  trigger = 1;
}


  debouncerA.update();
  // Get the update value
  int valueA = debouncerA.read();
  if (valueA != oldValueA) {
   // send(msgA.set(stateA ? false : true), true); // Send new state and request ack back
    send(msgA.set(stateA ? false : true), false); // Send new state with no request for ack
    stateA = stateA ? false : true;               // invert the state
     digitalWrite(relayPinA, stateA ? RELAY_ON : RELAY_OFF);  // toggle the relay
  oldValueA = valueA;
  }
 

  debouncerB.update();
  // Get the update value
  int valueB = debouncerB.read();
  if (valueB != oldValueB) {
    //send(msgB.set(stateB ? false : true), true); // Send new state and request ack back
    send(msgB.set(stateB ? false : true), false); // Send new state with no request for ack
    stateB = stateB ? false : true;                // invert the state
     digitalWrite(relayPinB, stateB ? RELAY_ON : RELAY_OFF);  // toggle the relay
    
  oldValueB = valueB;
  }
}

void receive(const MyMessage &message) {
  // We only expect one type of message from controller. But we better check anyway.
  if (message.type == V_STATUS) {
      
    switch (message.sensor) {
      case 1:
        stateA = message.getBool();
        digitalWrite(message.sensor + 4, stateA ? RELAY_ON : RELAY_OFF);
        
        break;
      case 2:
        stateB = message.getBool();
        digitalWrite(message.sensor + 4, stateB ? RELAY_ON : RELAY_OFF);
        
        break;
      
    }
   
      // Write some debug info
    Serial.print("Incoming change for sensor:");
    Serial.println(message.sensor);
    Serial.print("from node:");
    Serial.println(message.sender);
    Serial.print(", New status: ");
    Serial.println(message.getBool());
  }
}

[pepson]

ok then i test it.
But can you also add option to set mode button ? Bistable and monostable ?

[rayan]

@Boots33
ack is important , so we can not found any solution for this ? for exapmle add a code to this sketch , that when radio is disconnect so without ack work and when radio is ok this way stop and with ack work again.
this idea is for when a radio have problem or fail or other reason... so this light or other divece dont stop working and work handy when radio go to correct or change radio....

if you can change your code and add this option , so your sketch is best code for light control

[pepson]

@korttoma your sketch not working for me. I change numer relay to 2 and change pin buttons and relay and not control relay.

@Boots33
Ok i correct your sketch and use:

Switch Bistable:

/**
   DESCRIPTION
   Sketch for 2x relay with buttons bistable. After back power all relays set OFF and send correct status OFF to controller.  
*/

// Enable debug prints to serial monitor
#define MY_DEBUG

// Enable and select radio type attached
#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69

// Enabled repeater feature for this node
#define MY_REPEATER_FEATURE

#include <SPI.h>
#include <MySensors.h>
#include <Bounce2.h>

// Define Relays
#define RELAY_ON 1  // GPIO value to write to turn on attached relay
#define RELAY_OFF 0  // GPIO value to write to turn off attached relay

// Define Sensor ID's
#define SSR_A_ID 1   // Id of the sensor child
#define SSR_B_ID 2   // Id of the sensor child

// Define buttons and relays
const int buttonPinA = 3;
const int buttonPinB = 4;
const int relayPinA = 5;
const int relayPinB = 6;

// Define Variables
int oldValueA = 0;
int oldValueB = 0;
bool stateA = false;
bool stateB = false;
int trigger = 0;


Bounce debouncerA = Bounce();
Bounce debouncerB = Bounce();

MyMessage msgA(SSR_A_ID, V_STATUS);
MyMessage msgB(SSR_B_ID, V_STATUS);

void setup()
{

  pinMode(buttonPinA, INPUT_PULLUP); // Setup the button Activate internal pull-up
  pinMode(buttonPinB, INPUT_PULLUP); // Setup the button Activate internal pull-up


  // After setting up the buttons, setup debouncer
  debouncerA.attach(buttonPinA);
  debouncerA.interval(5);
  debouncerB.attach(buttonPinB);
  debouncerB.interval(5);

  // Make sure relays are off when starting up
  digitalWrite(relayPinA, RELAY_OFF);
  digitalWrite(relayPinB, RELAY_OFF);
  // Then set relay pins in output mode
  pinMode(relayPinA, OUTPUT);
  pinMode(relayPinB, OUTPUT);

    /*--------------------- Added these lines for toggle switch-------------------------*/
  oldValueA = digitalRead(buttonPinA);  // set oldValueA to the current status of the toggle switch
  oldValueB = digitalRead(buttonPinB);  // set oldValueB to the current status of the toggle switch
 // send(msgA.set(false)); // Send off state for relayA to ensure controller knows the switch is off
 // send(msgB.set(false)); // Send off state for relayB to ensure controller knows the switch is off
  
}

void presentation()  {
  // Send the sketch version information to the gateway and Controller
  sendSketchInfo("2xRelay with bistable", "1.1");

  // Register all sensors to gw (they will be created as child devices)
  present(SSR_A_ID, S_LIGHT);
  present(SSR_B_ID, S_LIGHT);

}

/*
   Example on how to asynchronously check for new messages from gw
*/
void loop()
{
if (trigger == 0){
  send(msgA.set(false)); // Send off state for relayA to ensure controller knows the switch is off
  send(msgB.set(false)); // Send off state for relayB to ensure controller knows the switch is off
  trigger = 1;
}


  debouncerA.update();
  // Get the update value
  int valueA = debouncerA.read();
  if (valueA != oldValueA) {
   // send(msgA.set(stateA ? false : true), true); // Send new state and request ack back
    send(msgA.set(stateA ? false : true), false); // Send new state with no request for ack
    stateA = stateA ? false : true;               // invert the state
     digitalWrite(relayPinA, stateA ? RELAY_ON : RELAY_OFF);  // toggle the relay
  oldValueA = valueA;
  }
 

  debouncerB.update();
  // Get the update value
  int valueB = debouncerB.read();
  if (valueB != oldValueB) {
    //send(msgB.set(stateB ? false : true), true); // Send new state and request ack back
    send(msgB.set(stateB ? false : true), false); // Send new state with no request for ack
    stateB = stateB ? false : true;                // invert the state
     digitalWrite(relayPinB, stateB ? RELAY_ON : RELAY_OFF);  // toggle the relay
    
  oldValueB = valueB;
  }
}

void receive(const MyMessage &message) {
  // We only expect one type of message from controller. But we better check anyway.
  if (message.type == V_STATUS) {
      
    switch (message.sensor) {
      case 1:
        stateA = message.getBool();
        digitalWrite(message.sensor + 4, stateA ? RELAY_ON : RELAY_OFF);
        
        break;
      case 2:
        stateB = message.getBool();
        digitalWrite(message.sensor + 4, stateB ? RELAY_ON : RELAY_OFF);
        
        break;
      
    }
   
      // Write some debug info
    Serial.print("Incoming change for sensor:");
    Serial.println(message.sensor);
    Serial.print("from node:");
    Serial.println(message.sender);
    Serial.print(", New status: ");
    Serial.println(message.getBool());
  }
}

Switch monostable:

/**
   DESCRIPTION
   Sketch for 2x relay with buttons monostable. After back power all relays set OFF and send correct status OFF to controller.  
*/

// Enable debug prints to serial monitor
#define MY_DEBUG

// Enable and select radio type attached
#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69

// Enabled repeater feature for this node
#define MY_REPEATER_FEATURE

#include <SPI.h>
#include <MySensors.h>
#include <Bounce2.h>

// Define Relays
#define RELAY_ON 1  // GPIO value to write to turn on attached relay
#define RELAY_OFF 0  // GPIO value to write to turn off attached relay

// Define Sensor ID's
#define SSR_A_ID 1   // Id of the sensor child
#define SSR_B_ID 2   // Id of the sensor child

// Define buttons and relays
const int buttonPinA = 3;
const int buttonPinB = 4;
const int relayPinA = 5;
const int relayPinB = 6;

// Define Variables
int oldValueA = 0;
int oldValueB = 0;
bool stateA = false;
bool stateB = false;
int trigger = 0;

Bounce debouncerA = Bounce();
Bounce debouncerB = Bounce();

MyMessage msgA(SSR_A_ID, V_STATUS);
MyMessage msgB(SSR_B_ID, V_STATUS);

void setup()
{

  pinMode(buttonPinA, INPUT_PULLUP); // Setup the button Activate internal pull-up
  pinMode(buttonPinB, INPUT_PULLUP); // Setup the button Activate internal pull-up


  // After setting up the buttons, setup debouncer
  debouncerA.attach(buttonPinA);
  debouncerA.interval(5);
  debouncerB.attach(buttonPinB);
  debouncerB.interval(5);

  // Make sure relays are off when starting up
  digitalWrite(relayPinA, RELAY_OFF);
  digitalWrite(relayPinB, RELAY_OFF);
  // Then set relay pins in output mode
  pinMode(relayPinA, OUTPUT);
  pinMode(relayPinB, OUTPUT);

}

void presentation()  {
  // Send the sketch version information to the gateway and Controller
  sendSketchInfo("2xRelay with monostable", "1.0");

  // Register all sensors to gw (they will be created as child devices)
  present(SSR_A_ID, S_LIGHT);
  present(SSR_B_ID, S_LIGHT);

}

/*
   Example on how to asynchronously check for new messages from gw
*/
void loop()
{
if (trigger == 0){
  send(msgA.set(false)); // Send off state for relayA to ensure controller knows the switch is off
  send(msgB.set(false)); // Send off state for relayB to ensure controller knows the switch is off
  trigger = 1;
}
  
  debouncerA.update();
  // Get the update value
  int valueA = debouncerA.read();
  if (valueA != oldValueA && valueA == 0) {
    send(msgA.set(stateA ? false : true), true); // Send new state and request ack back

  }
  oldValueA = valueA;
 

  debouncerB.update();
  // Get the update value
  int valueB = debouncerB.read();
  if (valueB != oldValueB && valueB == 0) {
    send(msgB.set(stateB ? false : true), true); // Send new state and request ack back

  }
  oldValueB = valueB;
}

void receive(const MyMessage &message) {
  // We only expect one type of message from controller. But we better check anyway.
  if (message.type == V_STATUS) {
      
    switch (message.sensor) {
      case 1:
        stateA = message.getBool();
        digitalWrite(message.sensor + 4, stateA ? RELAY_ON : RELAY_OFF);
        
        break;
      case 2:
        stateB = message.getBool();
        digitalWrite(message.sensor + 4, stateB ? RELAY_ON : RELAY_OFF);
        
        break;
      
    }
   
      // Write some debug info
    Serial.print("Incoming change for sensor:");
    Serial.println(message.sensor);
    Serial.print("from node:");
    Serial.println(message.sender);
    Serial.print(", New status: ");
    Serial.println(message.getBool());
  }
}

On this sketches it works ok. After power down and then power back all relays go to OFF and correct send info to Gateway and Domoticz that relays is OFF. But when Gateway is available.

But problem is when GATEWAY is not awailable when power for node come back.
If before lost power relay is ON and then power lost , and gateway is lost, and then power back to Node it goes to OFF all relay. It is ok.But when Gateway come back and now is available still show in Domoticz that relay is ON(on begin was ON). But Node should update status info after Gateway come back and is now available. But no update and show in Domoticz latest status.

It is very need and then this sketches will be the best for lights :)

When power lost and then come back, Node with sketches faster start then start Raspberry with Domoticz and connect Gateway Serial MySensors. An in this situation status is not update in Gateway/Domoticz.

Please help us. please

[Boots33]

@rayan said:

@Boots33
ack is important , so we can not found any solution for this ? for exapmle add a code to this sketch , that when radio is disconnect so without ack work and when radio is ok this way stop and with ack work again.
this idea is for when a radio have problem or fail or other reason... so this light or other divece dont stop working and work handy when radio go to correct or change radio....

if you can change your code and add this option , so your sketch is best code for light control

There have been a few threads about the issue of nodes not running the loop part of the sketch if a connection to the gateway cannot be established. Have a look Here and Here for a bit more info. It is a feature I am sure many would like to see in the next version of MySensors. For the moment MySensors does not support 100% what you want to do.

If you want to combine the two versions of the sketches you will need to have a method to check whether a connection to the gateway is present. You could try something like this in the loop.

if (isTransportOK()){

    // put code to execute when connection is available here

  } 
  else {

    // put code to execute when no connection is available here

  }

You will be adding a fair bit of complexity to the sketch. Can you tell me why the ACK is so important for you.

[pepson]

What is ACK ?

And can you show me all code with your if transport is ok to send update status to gateway...but if transport is wrong example try send every 1 minut and stop when send is good.

I am begginner sorry

Did you know any info that this function will be implement in next version as you write in latest your post ?

[rayan]

@Boots33
ack is a feedback . is this true ? so when i am out of home and i want turn on light , so ack show me that light is on or no ! also when there is a problem in connection and ack dont receive, so node search and found a new way for connection.
now i dont have a arduino and radio for test :) but do you think this code will be ok ?without else.

void loop()
{
 if (!isTransportOK())
{
if (...)            //if change switch to up or down
...                 //change state of relay
if(isTransportOK())
send(msg.set(state ? true : false), true);  // (last state)
}
  
  debouncer.update();
  // Get the update value
  int value = debouncer.read();
  if (value != oldValue && value == 0) {
    send(msg.set(state ? false : true), true); // Send new state and request ack back
  }
  oldValue = value;
}

(i can not work with Bounce2 library :) ) please help to fill lines
in loop we add a "if (!isTransportOK())" and write when change switch (on/off) state of relay change and this is repeat until connection will be ok ! so send a ack and for continue follow your code...
is this right ? can you do this change ?

[pepson]

Hi
I can test it but i must have finall code because i dont know what code i must put in (...). I am begginer user and i dont know how write programming.

[rayan]

@pepson

@Boots33 can solve this maybe because i dont work with Bounce2 lib.

[pepson]

Ok but can you give me ready code which i must put in code to my relays and then i test it.

[rayan]

@pepson
i dont have a ready sketch! wait to boots answer

[pepson]

Ok i am waiting...

[Boots33]

Guys I feel this thread has wandered a long way from the original topic and has taken up a lot of time. i really don't think there is a lot to be gained by turning the fairly simple relay sketch into what you now desire.

Even with the changes it still will not work if it boots up and can't find the gateway.

I am posting a final sketch which you may like to try, again it is untested so you may still need to work on it. I hope you understand I have a few of my own uncompleted projects that I want to get back to with the limited free time I have. Good luck with your MySensors journey.

#define MY_DEBUG
#define MY_RADIO_NRF24
#define MY_REPEATER_FEATURE

#include <SPI.h>
#include <MySensors.h>
#include <Bounce2.h>

#define RELAY_ON 1
#define RELAY_OFF 0

#define SSR_A_ID 1   // Id of the sensor child
#define SSR_B_ID 2   // Id of the sensor child

const int buttonPinA = 18;
const int buttonPinB = 19;
const int relayPinA = 5;
const int relayPinB = 6;
int oldValueA = 0;
int oldValueB = 0;
bool stateA = false;
bool stateB = false;
int trigger = 0;


Bounce debouncerA = Bounce();
Bounce debouncerB = Bounce();

MyMessage msgA(SSR_A_ID, V_STATUS);
MyMessage msgB(SSR_B_ID, V_STATUS);

void setup()
{

  pinMode(buttonPinA, INPUT_PULLUP); // Setup the button Activate internal pull-up
  pinMode(buttonPinB, INPUT_PULLUP); // Setup the button Activate internal pull-up
// Then set relay pins in output mode
  pinMode(relayPinA, OUTPUT);
  pinMode(relayPinB, OUTPUT);

  // After setting up the buttons, setup debouncer
  debouncerA.attach(buttonPinA);
  debouncerA.interval(5);
  debouncerB.attach(buttonPinB);
  debouncerB.interval(5);

  // Make sure relays are off when starting up
  digitalWrite(relayPinA, RELAY_OFF);
  digitalWrite(relayPinB, RELAY_OFF);
  

    /*--------------------- Added these lines for toggle switch-------------------------*/
  oldValueA = digitalRead(buttonPinA);  // set oldValueA to the current status of the toggle switch
  oldValueB = digitalRead(buttonPinB);  // set oldValueB to the current status of the toggle switch
 // send(msgA.set(false)); // Send off state for relayA to ensure controller knows the switch is off
 // send(msgB.set(false)); // Send off state for relayB to ensure controller knows the switch is off
  
}

void presentation()  {
  // Send the sketch version information to the gateway and Controller
  sendSketchInfo("Mains Controller", "1.0");

  // Register all sensors to gw (they will be created as child devices)
  present(SSR_A_ID, S_LIGHT);
  present(SSR_B_ID, S_LIGHT);

}

/*
   Example on how to asynchronously check for new messages from gw
*/
void loop()
{
if (trigger == 0){
  send(msgA.set(false)); // Send off state for relayA to ensure controller knows the switch is off
  send(msgB.set(false)); // Send off state for relayB to ensure controller knows the switch is off
  trigger = 1;
}


if (isTransportOK()){
   // put code to execute when connection is available here
    connectionPresent();

  } 
  else {
   // put code to execute when no connection is available here
   connectionLost();
  }

  
}

void receive(const MyMessage &message) {
  // We only expect one type of message from controller. But we better check anyway.
  if (message.type == V_STATUS) {
      
    switch (message.sensor) {
      case 1:
        stateA = message.getBool();
        digitalWrite(message.sensor + 4, stateA ? RELAY_ON : RELAY_OFF);
        
        break;
      case 2:
        stateB = message.getBool();
        digitalWrite(message.sensor + 4, stateB ? RELAY_ON : RELAY_OFF);
        
        break;
      
    }
   
      // Write some debug info
    Serial.print("Incoming change for sensor:");
    Serial.println(message.sensor);
    Serial.print("from node:");
    Serial.println(message.sender);
    Serial.print(", New status: ");
    Serial.println(message.getBool());
  }
}



void connectionPresent() {
// put code to execute when connection is available here
     debouncerA.update();
  // Get the update value
  int valueA = debouncerA.read();
  if (valueA != oldValueA) {
    send(msgA.set(stateA ? false : true), true); // Send new state and request ack back
  oldValueA = valueA;
  }
 

  debouncerB.update();
  // Get the update value
  int valueB = debouncerB.read();
  if (valueB != oldValueB) {
    send(msgB.set(stateB ? false : true), true); // Send new state and request ack back
  oldValueB = valueB;
  } 
}



  void connectionLost() {

   // put code to execute when no connection is available here
    debouncerA.update();
  // Get the update value
  int valueA = debouncerA.read();
  if (valueA != oldValueA) {
   // send(msgA.set(stateA ? false : true), true); // Send new state and request ack back
    send(msgA.set(stateA ? false : true), false); // Send new state with no request for ack
    stateA = stateA ? false : true;               // invert the state
     digitalWrite(relayPinA, stateA ? RELAY_ON : RELAY_OFF);  // toggle the relay
  oldValueA = valueA;
  }
 

  debouncerB.update();
  // Get the update value
  int valueB = debouncerB.read();
  if (valueB != oldValueB) {
    //send(msgB.set(stateB ? false : true), true); // Send new state and request ack back
    send(msgB.set(stateB ? false : true), false); // Send new state with no request for ack
    stateB = stateB ? false : true;                // invert the state
     digitalWrite(relayPinB, stateB ? RELAY_ON : RELAY_OFF);  // toggle the relay
    
  oldValueB = valueB;
  }
}

[pepson]

Still not working correct. After lost connection with gateway and then change status , after connection restore , but status is still not update in Domoticz. Still show before lost connection.