Project automation of a garage

I’m doing the project to automate my garage with Blynk’s help, so I want to be able to control it, the exterior lighting, the interior lighting, the opening and closing of the doors, and the temperature inside.
To do this I use 2 PCF8574 ports connected to the I2C bus of my NodeMCU esp8266 v.3, one used as inputs and another as outputs, the port used as inputs I read it when it produces an interruption when changing any of its inputs. I am encountering the problem that my PCF8574 used as inputs gives me false interruptions, so it causes failures in the operation of my program, each of the inputs I try to receive 1 or 0 clear, I do not let the input stay To air, but still the program is not stable, I already tried to change the PCF8574 but still giving problems, I even tried to avoid that the cables that go to the port inputs do not pass above the ESP8266 to avoid electromagnetic interference by Wi-Fi, Internet I have seen that initially before starting to use as inputs the PCF8574 need to write in the 0XFF, but I have not noticed improvement, I would appreciate any help regarding my problem.

Greetings and thank you

BlackTiger

I don’t think anyone will be able to help you without seeing your code :wink:

1 Like

I’m sorry I’ve been sick and I have not been able to respond.

To make it easier to understand my project, I have done an electrical scheme of what would be both an input and an output, I have simplified the code of my program, since it is repeated or very similar for each of the inputs, and I have translated the comments into English to make it easier to follow my code.

The outputs are activated for a second, for this I perform a timing, these timings sometimes fail, and I think it is due to the interruption caused by the PCF8574 input port.

My program

#include <BlynkSimpleEsp8266.h>
#include <dummy.h>
#include <WidgetLED.h>
#include <Wire.h>
#include “ESP8266WiFi.h”
#include <SimpleTimer.h>

#define AdrPortIn0PCF8574A 0X21 // Dirección del puerto 0 del PCF8574A configurado como entradas.
#define AdrPortOut0PCF8574T 0x20 // Dirección del puerto 0 del PCF8574A configurado como entradas.

char ssid[] = “”; // your network SSID (name)
char pass[] = “”; // your network password (use for WPA, or use as key for WEP)
char auth[] = “”;

boolean MirrorPinPortIn0PCF8574A[7];
volatile boolean TempPinPortIn0PCF8574A[7];

volatile boolean FlagINT=false; // Bandera para saber que se ha producido la interrupción.

SimpleTimer timer;
int timerID;

WidgetLED Led0(V0); // Led Interior garage lights
WidgetLED Led1(V1); // Led Exterior garage lights
WidgetLED Led2(V2); // Led Interior light garage detector

int status = WL_IDLE_STATUS;

void InicalizaLedsBlynk(); // Para poder llamarla desde "void setup() hay que declararla.
void InicalizaButtonsBlynk();
void IntPortInPCF8574();
void UpdateDataPortIns(byte AdrPort);
byte ReadDataPortPCF8574A (byte device);
void UpdatePortOut0PCF8574APulse();
void OffPinPortOutPCF8574APulse();
void WriteDataPortPCF8574A(byte device,byte data);
void UpdateProgram();

byte AdrDeviceOut;
int PinOut;

/* Función para configuar y establecer las condiciones iniciales del programa */

void setup()
{

Wire.begin(); //Activate Bus I2C

Blynk.begin(auth, ssid, pass);

while (Blynk.connect() == false) {
// Wait until connected
}

InicalizaLedsBlynk(); // I read the inputs to update the Blynk Led
InicalizaButtonsBlynk(); //Depending on the inputs I update the function of the buttons.

attachInterrupt(D5,IntPortInPCF8574,FALLING); // When an interruption occurs, it is downhill FALLING
}

/* FUNCIÓN QUE SE EJECUTA AL PRODUCIRSE LA INTERRUPCIÓN PARA LOS PUERTOS PCF8574 USADOS COMO ENTRADAS */

void IntPortInPCF8574()
{

UpdateDataPortIns(AdrPortIn0PCF8574A); // Function to update the variable “TempPinPortIn0PCF8574A[7]”, for
// Then in main program when comparing with MirrorPinPortIn0PCF8574A[7]
// Know the entry that has changed status.

FlagINT=true; // Interruption flag
} // In main program I call the function “UpdateProgram()”.

/* FUNCTION TO READ THE INPUT PORT, DETERMINE THE INPUT THAT HAS CHANGED AND HAS CAUSED THE INTERRUPTION, /
/
AND UPDATING THE VARIABLE MIRROR USED /
/
Input data: address on the I2C bus of the port to read */

void UpdateDataPortIns(byte AdrPort)
{
byte DataPortIn,DataPortInAgain;
byte InOn=B00000001;
byte InOnTemp;
int NRead=0;

DataPortIn=ReadDataPortPCF8574A(AdrPort); // Read Port In,s PCF8574A

for (int i=0;i<8;i++) // I examine each of the bits of the input port
{
InOnTemp=DataPortIn & InOn;

if(InOnTemp == InOn)
TempPinPortIn0PCF8574A[i]=HIGH;
else TempPinPortIn0PCF8574A[i]=LOW;

InOn=InOn<<1;
}
}

/* FUNCTION TO UPDATE PUERTO LAS SALIDAS /
/
Input data: /
/
- Address on the I2C bus of the output port /
/
- Output bit to update /
/
The outputs from 0 to 2 are activated by giving a pulse. */

void UpdatePortOut0PCF8574APulse()
{

if(PinOut==0) // For output port 0 outputs
{

WriteDataPortPCF8574A(AdrDeviceOut,B11111110);                 // Activates output 0 -> Turn On Garage Lights.    
timerID=timer.setTimeout(1000, OffPinPortOutPCF8574APulse);    // Call the function OffPinPortOutPCF8574APulse After 1 second.                 

}

if(PinOut==1) // For output port 1 outputs
{
WriteDataPortPCF8574A(AdrDeviceOut,B11111101); // Activates output 1 -> Turn Off Garage Lights.
timerID=timer.setTimeout(1000, OffPinPortOutPCF8574APulse); // Call the function OffPinPortOutPCF8574APulse After 1 second.
}

if(PinOut==2) // For output port 2 outputs
{
WriteDataPortPCF8574A(AdrDeviceOut,B11111011); // Activates output 1 -> On/Off exterior garage lights.
timerID=timer.setTimeout(1000, OffPinPortOutPCF8574APulse); // Call the function OffPinPortOutPCF8574APulse After 1 second.
}

}

/* FUNCTION TO DEACTIVATE THE OUTPUT WE HAVE BEEN ACTIVATED PREVIOUSLY */

void OffPinPortOutPCF8574APulse()
{
WriteDataPortPCF8574A(AdrDeviceOut,B11111111);
timer.deleteTimer(timerID);
}

/* FUNCTION TO UPDATE THE LED STATUS IN BLYNK IN THE FUNCTION OF THE INPUT THAT HAS CHANGED FROM STATE */

void UpdateProgram()
{

for (int i=0;i<8;i++) // To examine each of the bits of the input port.
{

if (MirrorPinPortIn0PCF8574A[i] != TempPinPortIn0PCF8574A[i]) // I update the mirror variable, for this I determine the input 
  {                                                           // Which has caused the interruption.
  MirrorPinPortIn0PCF8574A[i]=TempPinPortIn0PCF8574A[i];

  switch (i)
    {
    case 0: if (MirrorPinPortIn0PCF8574A[i]==HIGH)
              {
              Led0.on();                                       // Led State interior garage lights                                
              Blynk.setProperty(V8,"onLabel","ENCENDER");     // button Focos Garaje
              Blynk.setProperty(V8,"offLabel","APAGAR");
              }
              else
              {
              Led0.off();                 
              Blynk.setProperty(V8,"onLabel","APAGAR");
              Blynk.setProperty(V8,"offLabel","ENCENDER");                  
              }
            break;  

    case 1: if (MirrorPinPortIn0PCF8574A[i]==HIGH)
              {
              Led1.on();                                      // Led State exterior garage lights                 
              Blynk.setProperty(V9,"onLabel","ENCENDER");     // button exterior garage lights
              Blynk.setProperty(V9,"offLabel","APAGAR");
              }
              else
              {
              Led1.off();                                      
              Blynk.setProperty(V9,"onLabel","APAGAR");
              Blynk.setProperty(V9,"offLabel","ENCENDER");  
              }
            break; 

    case 2: if (MirrorPinPortIn0PCF8574A[i]==HIGH)                  
                Led2.on();                               // Led Status Detector Light Interior Garage                  
              else                  
                Led2.off();                                    
           break;                    
                                             
    }     
   }     
 }

}

/* FUNCTION TO READ A PORT OF INPUTS CONNECTED TO BUS I2C /
/
Input Data: the address of the port to read /
/
Output data: returns the data read from the port */

byte ReadDataPortPCF8574A (byte device)
{
byte data;
Wire.requestFrom(device,1);
data=Wire.read();
Wire.endTransmission();
// Serial.println(data,BIN);
return data;
}

/* FUNCTION TO WRITE ON AN INPUT PORT CONNECTED TO I2C BUS /
/
Input Data: the address of the port to read, and data to write /
/
Output data: returns the data read from the port */

void WriteDataPortPCF8574A(byte device,byte data)
{
Wire.beginTransmission(device);
Wire.write(data);
Wire.endTransmission();
}

/* FUNCTION TO KNOW INITIALLY THE STATE OF THE TICKETS */

void InicializaMirrorIns()
{
byte DataPortIn;
byte InOn=B00000001;
byte InOnTemp;

DataPortIn=ReadDataPortPCF8574A(AdrPortIn0PCF8574A);

for (int i=0;i<8;i++) // To examine each of the bits of the input port.
{
InOnTemp=DataPortIn & InOn;

if(InOnTemp == InOn) // In the mirror variable " MirrorPinPortIn0PCF8574A[7]" I’m saving the last
MirrorPinPortIn0PCF8574A[i]=HIGH; // State in which the entries are found, if any changes, comparing them
else MirrorPinPortIn0PCF8574A[i]=LOW; // With this variable know that input has changed state.

InOn=InOn<<1;
}
}

/* PUSH-BUTTON TO IGNITION THE INTERIOR GARAGE LIGHTS */

BLYNK_WRITE (V8)
{

if(param.asInt()==1 && MirrorPinPortIn0PCF8574A[0]==LOW) // Turn On Interior Garage Lights.
{
Serial.println(“Focos On”);
AdrDeviceOut=AdrPortOut0PCF8574T;
PinOut=0;
UpdatePortOut0PCF8574APulse();
}
else if (param.asInt()==1 && MirrorPinPortIn0PCF8574A[0]==HIGH) // Turn Off Interior Garage Lights.
{
Serial.println(“Focos Off”);
AdrDeviceOut=AdrPortOut0PCF8574T;
PinOut=1;
UpdatePortOut0PCF8574APulse();
}
}

/* PUSH-BUTTON TO IGNITION THE EXTERIOR GARAGE LIGHTS */

BLYNK_WRITE (V9)
{
if(param.asInt()==1 && MirrorPinPortIn0PCF8574A[1]==LOW) // Turn On Exterior Garage Lights.
{
AdrDeviceOut=AdrPortOut0PCF8574T;
PinOut=2;
UpdatePortOut0PCF8574APulse();
}
else if (param.asInt()==1 && MirrorPinPortIn0PCF8574A[1]==HIGH) // Turn On Exterior Garage Lights.
{
AdrDeviceOut=AdrPortOut0PCF8574T;
PinOut=2;
UpdatePortOut0PCF8574APulse();
}
}

/* FUNCTION TO INITIALLY ESTABLISH THE STATE OF THE LEDS IN BLYNK */

void InicalizaLedsBlynk()
{

WriteDataPortPCF8574A(AdrPortIn0PCF8574A,0XFF); // To initialize the PCF8574 used as Inputs.

InicializaMirrorIns(); // Leo port entries, and I keep it in the variable MirrorPinPortIn0PCF8574A

if (MirrorPinPortIn0PCF8574A[0]==HIGH) Led0.on(); // Led State interior garage lights
else Led0.off();

if (MirrorPinPortIn0PCF8574A[1]==HIGH) Led1.on(); // Led State exterior garage lights
else Led1.off();

if (MirrorPinPortIn0PCF8574A[2]==HIGH) Led2.on(); // Led Status Detector Light Interior Garage
else Led2.off();
}

/* Function to initially set the status of Blynk buttons */

void InicalizaButtonsBlynk()
{

if (MirrorPinPortIn0PCF8574A[0]==HIGH) // PUSH-BUTTON interior garage lights
{
Blynk.setProperty(V8,“onLabel”,“ENCENDER”);
Blynk.setProperty(V8,“offLabel”,“APAGAR”);
}
else
{
Blynk.setProperty(V8,“onLabel”,“APAGAR”);
Blynk.setProperty(V8,“offLabel”,“ENCENDER”);
}

if (MirrorPinPortIn0PCF8574A[1]==HIGH) // PUSH-BUTTON exterior garage lights
{
Blynk.setProperty(V9,“onLabel”,“ENCENDER”);
Blynk.setProperty(V9,“offLabel”,“APAGAR”);
}
else
{
Blynk.setProperty(V9,“onLabel”,“APAGAR”);
Blynk.setProperty(V9,“offLabel”,“ENCENDER”);
}

}

/* MAIN PROGRAM */

void loop()
{
Blynk.run();

timer.run();

if(FlagINT==true) // There has been interruption of the input port, I update the program based on the inputs.
{
FlagINT=false;
UpdateProgram();
}

}

Please, How do I put the code in my program so that it can be read ???

Code snippets should be formatted. Please edit your initial post:

How to do that:


 ``` cpp <--put 3 backticks BEFORE your code starts  ("cpp" means C++ language) 

   //Put your code here
   //..................
   //..................

 ``` <--insert 3 backticks AFTER your code

**This makes your code readable and with highlighted syntax, like this

↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓

//comment goes here 
void helloWorld() { 
   String message =  "hello" + "world"; 
}

And please, go back and EDIT your past post, by adding the above mentioned backticks at the beginning and end of the code, instead of reposting the same, but now formatted code in a new comment. It makes the flow of the overall posting cleaner and easier to follow.


#include <BlynkSimpleEsp8266.h>
#include <dummy.h>
#include <WidgetLED.h>
#include <Wire.h>
#include "ESP8266WiFi.h"
#include <SimpleTimer.h>

#define AdrPortIn0PCF8574A 0X21 // Port address 0 of PCF8574A configured as inputs.
#define AdrPortOut0PCF8574T 0x20 // Port address 1 of PCF8574A configured as outputs.


char ssid[] = "";    // your network SSID (name) 
char pass[] = "";     // your network password (use for WPA, or use as key for WEP)
char auth[] =  ""; 

boolean MirrorPinPortIn0PCF8574A[7];
volatile boolean TempPinPortIn0PCF8574A[7];


volatile boolean FlagINT=false;  // Flag to know that the interruption has occurred.


SimpleTimer timer;
int timerID;

WidgetLED Led0(V0); // Led Interior garage lights
WidgetLED Led1(V1); // Led Exterior garage lights
WidgetLED Led2(V2); // Led Interior light garage detector


int status = WL_IDLE_STATUS;

void InicalizaLedsBlynk(); 
void InicalizaButtonsBlynk();
void IntPortInPCF8574();
void UpdateDataPortIns(byte AdrPort);
byte ReadDataPortPCF8574A (byte device);
void UpdatePortOut0PCF8574APulse();
void OffPinPortOutPCF8574APulse();
void WriteDataPortPCF8574A(byte device,byte data);
void UpdateProgram();


byte AdrDeviceOut;
int PinOut;



/* Function to configure and set the initial conditions of the program */

void setup() 
{
  
  Wire.begin(); //Activate Bus I2C
  
    
  
  Blynk.begin(auth, ssid, pass);
   
  while (Blynk.connect() == false) {      
    // Wait until connected
  }
 

 
  InicalizaLedsBlynk();     // I read the inputs to update the Blynk Led
  InicalizaButtonsBlynk();  // Depending on the inputs I update the function of the buttons.
  
  attachInterrupt(D5,IntPortInPCF8574,FALLING);   // When an interruption occurs.
}                                           


/ * FUNCTION THAT IS PERFORMED WHEN THE INTERRUPTION IS PRODUCED FOR PCF8574 PORTS USED AS INPUTS * /

void IntPortInPCF8574()
{
 
UpdateDataPortIns(AdrPortIn0PCF8574A);  // Function to update the variable 
                                        // "TempPinPortIn0PCF8574A[7]", for 
                                        // Then in main program when comparing with
                                        // MirrorPinPortIn0PCF8574A[7]
                                        // Know the entry that has changed status.
                                        
FlagINT=true;                           // Interruption flag               
}                                       // In main program I call the function "UpdateProgram()".


/* FUNCTION TO READ THE INPUT PORT, DETERMINE THE INPUT THAT HAS CHANGED AND HAS CAUSED THE */ 
/* INTERRUPTION,  AND UPDATING THE VARIABLE MIRROR USED  */
/* Input data: address on the I2C bus of the port to read                         */

void UpdateDataPortIns(byte AdrPort)
{
byte DataPortIn,DataPortInAgain;
byte InOn=B00000001;
byte InOnTemp;
int NRead=0;

DataPortIn=ReadDataPortPCF8574A(AdrPort);          // Read Port In,s PCF8574A

for (int i=0;i<8;i++)                              // I examine each of the bits of the input port
  {
  InOnTemp=DataPortIn & InOn;  

  if(InOnTemp == InOn)    
    TempPinPortIn0PCF8574A[i]=HIGH;
        else TempPinPortIn0PCF8574A[i]=LOW;  

   InOn=InOn<<1;                    
  }
}


/* FUNCTION TO UPDATE PUERTO LAS SALIDAS                      */
/* Input data:                                                */
/*    - Address on the I2C bus of the output port             */
/*    - Output bit to update                                  */ 
/* The outputs from 0 to 2 are activated by giving a pulse.   */


void UpdatePortOut0PCF8574APulse()
{ 
  
  if(PinOut==0)                                                    // For output port 0 outputs
   {                
    WriteDataPortPCF8574A(AdrDeviceOut,B11111110);                 // Activates output 0 -> Turn On 
                                                                   // Garage Lights.    
    timerID=timer.setTimeout(1000, OffPinPortOutPCF8574APulse);    // Call the function 
                                                                   // OffPinPortOutPCF8574APulse
                                                                   // After 1 second.                 
   }                                                                   
   

 if(PinOut==1)                                                      // For output port 1 outputs
   {                
    WriteDataPortPCF8574A(AdrDeviceOut,B11111101);                  // Activates output 1 -> Turn
                                                                    // Off Garage Lights.    
    timerID=timer.setTimeout(1000, OffPinPortOutPCF8574APulse);     // Call the function
                                                                    // OffPinPortOutPCF8574APulse
                                                                    // After 1 second.           
   }

if(PinOut==2)                                                       // For output port 2 outputs
   {            
    WriteDataPortPCF8574A(AdrDeviceOut,B11111011);                  // Activates output 1 -> On/Off
                                                                  // exterior garage lights.    
    timerID=timer.setTimeout(1000, OffPinPortOutPCF8574APulse);    //  Call the function 
                                                                  // OffPinPortOutPCF8574APulse
                                                                  // After 1 second.              
   } 
   
}


/* FUNCTION TO DEACTIVATE THE OUTPUT WE HAVE BEEN ACTIVATED PREVIOUSLY */

void OffPinPortOutPCF8574APulse()
  {                         
  WriteDataPortPCF8574A(AdrDeviceOut,B11111111);                       
  timer.deleteTimer(timerID);  
  }



/* FUNCTION TO UPDATE THE LED STATUS IN BLYNK IN THE FUNCTION OF THE INPUT THAT HAS CHANGED FROM STATE */

void UpdateProgram()            
{

  for (int i=0;i<8;i++)                                             // To examine each of the bits of the input port.
    {  
    
    if (MirrorPinPortIn0PCF8574A[i] != TempPinPortIn0PCF8574A[i])   // I update the mirror 
                                                                         // variable, for this I 
                                                                         // determine the input 
      {                                                                 // Which has caused 
                                                                       // the interruption.
      MirrorPinPortIn0PCF8574A[i]=TempPinPortIn0PCF8574A[i];
    
      switch (i)
        {
        case 0: if (MirrorPinPortIn0PCF8574A[i]==HIGH)
                  {
                  Led0.on();                                        // Led interior garage lights                                
                  Blynk.setProperty(V8,"onLabel","ENCENDER");       // button Focos Garaje
                  Blynk.setProperty(V8,"offLabel","APAGAR");
                  }
                  else
                  {
                  Led0.off();                 
                  Blynk.setProperty(V8,"onLabel","APAGAR");
                  Blynk.setProperty(V8,"offLabel","ENCENDER");                  
                  }
                break;  

        case 1: if (MirrorPinPortIn0PCF8574A[i]==HIGH)
                  {
                  Led1.on();                                      // Led exterior garage lights                 
                  Blynk.setProperty(V9,"onLabel","ENCENDER");     // button exterior garage lights
                  Blynk.setProperty(V9,"offLabel","APAGAR");
                  }
                  else
                  {
                  Led1.off();                                      
                  Blynk.setProperty(V9,"onLabel","APAGAR");
                  Blynk.setProperty(V9,"offLabel","ENCENDER");  
                  }
                break; 

        case 2: if (MirrorPinPortIn0PCF8574A[i]==HIGH)                  
                    Led2.on();                               // Led Detector Light Interior Garage                  
                  else                  
                    Led2.off();                                    
               break;                    
                                                 
        }     
       }     
     }
}



/* FUNCTION TO READ A PORT OF INPUTS CONNECTED TO BUS I2C */
/* Input Data: the address of the port to read            */
/* Output data: returns the data read from the port       */

byte ReadDataPortPCF8574A (byte device)
  {
  byte data;  
  Wire.requestFrom(device,1);          
  data=Wire.read();
  Wire.endTransmission();
  // Serial.println(data,BIN);
  return data;
  }


/* FUNCTION TO WRITE ON AN INPUT PORT CONNECTED TO I2C BUS        */
/* Input Data: the address of the port to read, and data to write */
/* Output data: returns the data read from the port               */

void WriteDataPortPCF8574A(byte device,byte data)
{
Wire.beginTransmission(device);
Wire.write(data);
Wire.endTransmission(); 
}


/* FUNCTION TO KNOW INITIALLY THE STATE OF THE INPUTS */

void InicializaMirrorIns()
{
byte DataPortIn;
byte InOn=B00000001;
byte InOnTemp;

DataPortIn=ReadDataPortPCF8574A(AdrPortIn0PCF8574A);

for (int i=0;i<8;i++)           // To examine each of the bits of the input port.
  {
  InOnTemp=DataPortIn & InOn;

  if(InOnTemp == InOn)                              // In the mirror variable 
                                                    // "MirrorPinPortIn0PCF8574A[7]" I'm saving the
                                                   // last State in which the entries are found,
    MirrorPinPortIn0PCF8574A[i]=HIGH;               //   if any changes, comparing them
        else MirrorPinPortIn0PCF8574A[i]=LOW;       // With this variable know that input has
                                                   // changed state.

  InOn=InOn<<1;   
  }
}


/* PUSH-BUTTON TO IGNITION THE INTERIOR GARAGE LIGHTS */

BLYNK_WRITE (V8)
{
    
  if(param.asInt()==1 && MirrorPinPortIn0PCF8574A[0]==LOW)   // Turn On Interior Garage Lights.
    {
    Serial.println("Focos On"); 
    AdrDeviceOut=AdrPortOut0PCF8574T;
    PinOut=0;
    UpdatePortOut0PCF8574APulse();    
    }
    else if (param.asInt()==1 && MirrorPinPortIn0PCF8574A[0]==HIGH)   // Turn Off Interior Garage 
    {                                                                                // Lights.
    Serial.println("Focos Off"); 
    AdrDeviceOut=AdrPortOut0PCF8574T;
    PinOut=1;
    UpdatePortOut0PCF8574APulse();     
    }
}


/* PUSH-BUTTON TO IGNITION THE EXTERIOR GARAGE LIGHTS */

BLYNK_WRITE (V9)
{
  if(param.asInt()==1 && MirrorPinPortIn0PCF8574A[1]==LOW)    // Turn On Exterior Garage Lights.
    {
    AdrDeviceOut=AdrPortOut0PCF8574T;
    PinOut=2;
    UpdatePortOut0PCF8574APulse();
    }
    else if (param.asInt()==1 && MirrorPinPortIn0PCF8574A[1]==HIGH)   // Turn On Exterior Garage 
    {                                                                                 // Lights.
    AdrDeviceOut=AdrPortOut0PCF8574T;
    PinOut=2;
    UpdatePortOut0PCF8574APulse();
    }
}


/* FUNCTION TO INITIALLY ESTABLISH THE STATE OF THE LEDS IN BLYNK */ 

void InicalizaLedsBlynk()
{

 WriteDataPortPCF8574A(AdrPortIn0PCF8574A,0XFF);     // To initialize the PCF8574 used as Inputs.
  
 InicializaMirrorIns();                              // Read port entries, and I keep it in the
                                                     // variable MirrorPinPortIn0PCF8574A

 if (MirrorPinPortIn0PCF8574A[0]==HIGH) Led0.on();   // Led State interior garage lights
    else Led0.off();   

  if (MirrorPinPortIn0PCF8574A[1]==HIGH) Led1.on();   // Led State exterior garage lights
    else Led1.off();   

  if (MirrorPinPortIn0PCF8574A[2]==HIGH) Led2.on();   // Led Status Detector Light Interior Garage
    else Led2.off();      
}


/* Function to initially set the status of Blynk buttons */

void InicalizaButtonsBlynk()
{

 if (MirrorPinPortIn0PCF8574A[0]==HIGH)          // PUSH-BUTTON interior garage lights
   {  
   Blynk.setProperty(V8,"onLabel","ENCENDER");   
   Blynk.setProperty(V8,"offLabel","APAGAR");
   }
  else 
   {      
   Blynk.setProperty(V8,"onLabel","APAGAR");
   Blynk.setProperty(V8,"offLabel","ENCENDER");
   }

  if (MirrorPinPortIn0PCF8574A[1]==HIGH)          // PUSH-BUTTON exterior garage lights
   {  
   Blynk.setProperty(V9,"onLabel","ENCENDER");   
   Blynk.setProperty(V9,"offLabel","APAGAR");
   }
  else 
   {      
   Blynk.setProperty(V9,"onLabel","APAGAR");
   Blynk.setProperty(V9,"offLabel","ENCENDER");
   } 
  
}


/* MAIN PROGRAM */

void loop() 
{  
   Blynk.run();
 
   timer.run();           
                          

   if(FlagINT==true)      // There has been interruption of the input port, I update the program based on the inputs.
      {
      FlagINT=false;      
      UpdateProgram();                     
      }      

}