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Flow Sensor | Interrupt code not running

hardware
esp8266
nonblynkrelated

#1

hey guys,

Hoping someone will have some free time to take a look at this code I have below. It compiles correctly but doesn’t function as planned. Its a mixture of a flow sensor code I found on an instructable, and some modifications I’ve made. I am still learning here, so I welcome any criticisms anyone might see that would teach me something or would be a better use of code.

Essentially its a simple water flow sensor, with a small caveat to open up a valve when a button is pressed. It seems like the interrupt code inst getting called, and i’m hoping to determine if its a code thing or a physical hardware thing.

I’m using a Wemos D1 Mini over WiFi, and a DigiTen flow sensor, and a PWM circuit for the valve opening. the valve opening works and the timers for that all operate effectively, but i’m not seeing any interrupt code being run.

Any help would be greatly appreciated.

Main Tab:

#include <Bounce2.h>
//#define BLYNK_DEBUG         
#define BLYNK_PRINT Serial 
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <ESP8266HTTPClient.h>
#include <ESP8266httpUpdate.h>
#include <ArduinoOTA.h>
#include <ESP8266WebServer.h>
#include <SimpleTimer.h>
#include <TimeLib.h>
#include <WidgetRTC.h>
#include <Ticker.h>              //for LED status
Ticker ticker;

char auth[] = "***";
// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "***";
char pass[] = "***";
char hostNamed[] = "WATERFLOW";
const int FW_VERSIONs = 1003;
int FW_VER=FW_VERSIONs;
const char* fwUrlBase = "***";

SimpleTimer timer;
WidgetRTC rtc;
WidgetBridge WaterBridge(V122);

byte sensorInterrupt = 14;   
byte sensorPin       = 14;  
byte airPin         = D6;

// The hall-effect flow sensor outputs approximately 4.5 pulses per second per litre/minute of flow.
float calibrationFactor = 4.5;
volatile byte pulseCount;
float flowRate;
unsigned int flowMilliLitres;
unsigned long totalMilliLitres;
unsigned long oldTime;

#define averageperiod 5         // currently set to average the flow every 5 seconds
int countseconds = 0;           // count up to averageperiod
int averageflow = 0;            // used for averaging flow over averageperiod
bool notificationsent = false;  // to ensure just one message for each flow start
bool airState = false;         // air is OFF on start up
bool masterState = false;       //
bool flowoffprintonce = false;  // to ensure just one serial and terminal print for each flow stop
int rowIndex = 0;                
String currentDate  ;
String daybefore;
int rtctimer = 1; //check if RTC is OK and then disable / delete this #1 timer
int menu = 0;
int s;

int AirTimer;
int AirTime = 60000;
int AlertsVal = 0;
int disconnectCount = 0;
int debug = 0;
int virtualpin118 = 0; //UPDATE PIN
#define LED D4
#define SWITCHPIN D3

void setup()
{

  Serial.begin(115200);
  Serial.println();
  pinMode(sensorPin, INPUT_PULLUP);
  digitalWrite(sensorPin, HIGH);
  pinMode(airPin, OUTPUT);
  pinMode(SWITCHPIN, INPUT_PULLUP);
  digitalWrite(airPin, LOW);  // ACTIVE HIGH, air relay set to OFF on restart
  Serial.println("FW: " + FW_VERSIONs);

  flowMilliLitres   = 0;
  totalMilliLitres  = 0;
  oldTime           = 0;
  flowRate          = 0.0;
  pulseCount        = 0;
  

  // Configured to trigger on a FALLING state change (transition from HIGH state to LOW state)
  attachInterrupt(sensorInterrupt, pulseCounter, FALLING);//FALLING

  // Configured to trigger on a CHANGE state change LOW to HIGH or HIGH to LOW
  //attachInterrupt(airInterrupt, airToggle, CHANGE);
  Blynk.begin(auth, ssid, pass);
  Serial.print("Auth: "); Serial.println(auth);
  Serial.print(hostNamed); Serial.println(" Booted");
  WiFi.hostname(hostNamed);
  ArduinoOTA.setHostname(hostNamed);
  ArduinoOTA.setPassword((const char *)"Atlas123");
  ArduinoOTA.begin();
  rtc.begin();
  Serial.println("Connected to Blynk");
  Serial.println(WiFi.localIP());
  timer.setInterval(1000L, showFlow);
  timer.setInterval(2002L, Sent_serial);//send serial updates to blynk for debug
  timer.setInterval(10000L, readSwitch);  // check if air needs to be switched ON or OFF every 10s
  rtctimer = timer.setInterval(2000L, checkRTC);   // check every 2s if RTC is correct
  checkForUpdates();

}

BLYNK_CONNECTED() {
  Blynk.syncVirtual(V5);
  Blynk.syncVirtual(V4);
  WaterBridge.setAuthToken("8577a1df4f85451b9ae99869976764a6");
  analogWrite(LED, 1023);
}
void showFlow()  // average the flow over averageperiod
{
  detachInterrupt(sensorInterrupt);  // Disable the interrupt while calculating flow rate and sending the value to the host
  // Because this loop may not complete in exactly 1 second intervals we calculate
  // the number of milliseconds that have passed since the last execution and use
  // that to scale the output. We also apply the calibrationFactor to scale the output
  // based on the number of pulses per second per units of measure (litres/minute in
  // this case) coming from the sensor.
  flowRate = ((1000.0 / (millis() - oldTime)) * pulseCount) / calibrationFactor;
  // Note the time this processing pass was executed. Note that because we've
  // disabled interrupts the millis() function won't actually be incrementing right
  // at this point, but it will still return the value it was set to just before
  // interrupts went away.
  oldTime = millis();

  // Divide the flow rate in litres/minute by 60 to determine how many litres have
  // passed through the sensor in this 1 second interval, then multiply by 1000 to
  // convert to millilitres.
  flowMilliLitres = (flowRate / 60) * 1000;

  // Add the ml passed in this second to the cumulative total
  totalMilliLitres += flowMilliLitres;

  if (debug == 1) {// Print the flow rate for this second in litres / minute
    Serial.print("Flow rate: ");
    Serial.print(int(flowRate));  // Print the integer part of the variable
    Serial.print("L/min");
    Serial.print("\t");          // Print tab space
    // Print the cumulative total of litres flowed since starting
    Serial.print("Output Liquid Quantity: ");
    Serial.print(totalMilliLitres);
    Serial.print("mL");
    Serial.print("\t");       // Print tab space
    Serial.print(totalMilliLitres / 1000);
    Serial.println("L");
  }
  countseconds++;
  if (countseconds > 0) {  // used to skip the first rogue data flow reading
    averageflow = averageflow + flowRate;   // used to calculate the average flow over averageperiod cycles
  }
  if (countseconds == averageperiod) {
    if (debug == 1) {
      Serial.print("Average water flow in litres / M is ");
      Serial.println(averageflow / averageperiod);
    }
    Blynk.virtualWrite(V2, int(averageflow) / averageperiod);
    Blynk.virtualWrite(V9, int((averageflow) / averageperiod) * 255);
    Blynk.virtualWrite(V1, totalMilliLitres / 3785.41);
    countseconds = 0;  // reset the counter
    chkFlow();
    averageflow = 0;     // reset the average but only after chkFlow() function
  }
  attachInterrupt(sensorInterrupt, pulseCounter, FALLING);  // Enable the interrupt again now that we've finished sending output
}

void chkFlow() {
  if ((averageflow > 3) && (notificationsent == false)) { // guess of a decent water pressure
    Serial.println("Water IS flowing.");
    WaterBridge.virtualWrite(V18, 1);
    if (AlertsVal == 1) {
      Blynk.notify("Sensor: Water IS flowing.");
    }
    notificationsent = true;         // stop getting messages until water stops flowing and starts again
    flowoffprintonce = false;        // when water stops flowing again we can restart serial and terminal print (once)

  }
  if ((averageflow <= 3) && (flowoffprintonce == false)) {
    Serial.println("Water is NOT flowing.");
    WaterBridge.virtualWrite(V18, 0);

    notificationsent = false;  // when water starts flowing again we can send another notification
    flowoffprintonce = true;      // stop serial and terminal prints after first pass of water stopping
    s = 0;
  }
}
void pulseCounter()
{
  pulseCount++;  // Increment the pulse counter
 // Serial.println(pulseCount);
}
void airControl()                // toggle air OFF and ON
{
  if (airState == 1) {
    Blynk.virtualWrite(V4, 1);
    Blynk.virtualWrite(V8, "ON");
    // Blynk.setProperty(V8, "color","#48E06B");
    Serial.println("Air is ON");
  }
  else {
    Blynk.virtualWrite(V4, 0);
    Blynk.virtualWrite(V8, "OFF");
    //   Blynk.setProperty(V8, "color","#04C0F8");
    Serial.println("Air is OFF");
  }
}
void checkRTC() {
  Serial.println("RTC check?");
  if (year() != 1970) {
    timer.disable(rtctimer);  // disable rtctimer now RTC is ok
    currentDate = String(day()) + "/" + month() + "/" + year();   // etc
    Serial.println("RTC started");
    daybefore = currentDate;
    timer.setInterval(60000L, table);   //start table() now RTC is OK
  }
}
void table()                               //Saurabh
{
  currentDate = String(day()) + "/" + month() + "/" + year();  // etc
  if (currentDate != daybefore)
  {
    Blynk.virtualWrite(V10, "add", rowIndex, daybefore, totalMilliLitres / 1000 + String(" litre")); //Saurabh
    Blynk.virtualWrite(V1, 0);
    Serial.println("working");
    flowMilliLitres = 0;
    totalMilliLitres = 0;
    daybefore = currentDate;
  }
}
void STOPair() {
  airState = 0;
  digitalWrite(airPin, LOW);  // turn AIR Off
  airControl();

}
void readSwitch() {
  int reading = digitalRead(SWITCHPIN);
  if (debug == 2) {
    Serial.println("Reading Switch");
    Serial.print("Reading "); Serial.println(reading);
  }
  if (reading == 0) {
    airState = 1;
    digitalWrite(airPin, HIGH);  // turn relay ON
    WaterBridge.virtualWrite(V9, 0);
    AirTimer = timer.setTimeout(AirTime, STOPair);
    airControl();
  }

}

BLYNK_WRITE(V3) {  // reset with button in PUSH mode on virtual pin 3
  int resetdata = param.asInt();
  if (resetdata == 1) {
    Serial.println("Clearing data");
    Blynk.virtualWrite(V2, 0);
    Blynk.virtualWrite(V1, 0);
    averageflow = 0;
    countseconds = 0;
    flowMilliLitres = 0;
    totalMilliLitres = 0;
  }
}
BLYNK_WRITE(V4) {  // Button in SWITCH mode on virtual pin 4 to control relay
  int controlRelay = param.asInt();
  if (controlRelay == 1) {
    airState = 1;
    if (AirTime != 0) {
      if (timer.isEnabled(AirTimer)) {
        timer.disable(AirTimer);
        AirTimer = timer.setTimeout(AirTime, STOPair);
      } else {
        AirTimer = timer.setTimeout(AirTime, STOPair);
      }
    }
    WaterBridge.virtualWrite(V9, 0);
    digitalWrite(airPin, HIGH);  // turn relay ON
  }
  else {
    airState = 0;
    digitalWrite(airPin, LOW);  // turn relay OFF
    if (timer.isEnabled(AirTimer)) {
      timer.disable(AirTimer);
    }
  }
  airControl();
}
BLYNK_WRITE(V5) //Alerts!
{
  AlertsVal = param.asInt(); // read incoming value from pin V5
  Serial.print("Alerts Value changed to " ); Serial.print(AlertsVal); Serial.println();
}
BLYNK_WRITE(V6) //time of air on
{
  int pinValue = param.asInt(); // read incoming value from pin V5
  AirTime = pinValue * 60000; // assign pin value to its own variable
  if (AirTime != 0) {
    if (timer.isEnabled(AirTimer)) {
      timer.disable(AirTimer);
      AirTimer = timer.setTimeout(AirTime, STOPair);
    }
  }
  Serial.print("Air Timer Updated to " ); Serial.print(AirTime); Serial.println();
}
BLYNK_WRITE(V20) { // reset with button in PUSH mode on virtual pin 20
  int resetdata = param.asInt();
  if (resetdata == 1) {
    Serial.println("Clearing table data");
    Blynk.virtualWrite(V10, "clr");

  }
}

BLYNK_WRITE(V100)//Reset the Board--------------------------------
{

  int pinValue = param.asInt(); // read incoming value from pin V100
  if (pinValue == 1) {
    Serial.println("Reboot Called. We shall reboot now.");
    //We will reset here
    ESP.restart();
  }
} BLYNK_WRITE(V101) //Debug Trigger--------------------------------
{
  Serial.println("FW: " + FW_VER);
  int pinValue = param.asInt(); // read incoming value from pin V100
  if (pinValue == 1) {
    Serial.println("Debug 1 Enabled.");
    debug = 1;
  } else if (pinValue == 2) {
    Serial.println("Debug 2 Enabled.");
    debug = 2;
  } else if (pinValue == 3) {
    Serial.println("Debug 3 Enabled.");
    debug = 3;
  } else {
    Serial.println("Debug Disabled.");
    debug = 0;
  }
}
BLYNK_WRITE(V118)//Update the Board--------------------------------
{
  int pinValue = param.asInt(); // read incoming value from pin V100
  if (pinValue == 1) {
    Serial.println("Update Called. We shall check for updates now.");
    virtualpin118 = 1;
    checkForUpdates();
  }
}
void loop() {
  Blynk.run();
  ArduinoOTA.handle();
  timer.run();
}

Secondary Tab:

void CheckConnection() {   // check every 11s if connected to Blynk server
  if (!Blynk.connected()) {
    ++disconnectCount;
    if (debug == 1) {
      Serial.println("Not connected to Blynk server");
      Serial.println("Disconnect Count: " + disconnectCount);
    }
    if (disconnectCount <= 20) {
      Blynk.connect();  // try to connect to server with default timeout
    } else if (disconnectCount > 20) {
      delay(3000);
      //ESP.restart();
      Serial.println("Not connected to Blynk server, Unhappy Restart");
      delay(5000);
    }
  }
  else {
    disconnectCount = 0;
    if (debug == 1) {
      Serial.println("Connected to Blynk server");
      Serial.println("FW:" + FW_VERSIONs);
    }
  }
}

void checkForUpdates() {
  detachInterrupt(13);
  analogWrite(LED, 255);
  String devID = hostNamed;
  String fwURL = String( fwUrlBase );
  fwURL.concat( hostNamed );
  String fwVersionURL = fwURL;
  fwVersionURL.concat( ".version" );
  if (debug == 1) {
    Serial.println( "Checking for firmware updates." );
    Serial.print( "Device ID: " );
    Serial.println( hostNamed );
    Serial.print( "Firmware URL: " );
    Serial.println( fwVersionURL );
  }
  HTTPClient httpClient;
  httpClient.begin( fwVersionURL );
  int httpCode = httpClient.GET();
  if ( httpCode == 200 ) {
    String newFWVersion = httpClient.getString();
    if (debug == 1) {
      Serial.print( "Current firmware version: " );
      Serial.println( FW_VERSIONs );
      Serial.print( "Available firmware version: " );
      Serial.println( newFWVersion );
    }
    int newVersion = newFWVersion.toInt();

    if ( newVersion > FW_VERSIONs ) {
      Serial.println( "Preparing to update" );

      String fwImageURL = fwURL;
      fwImageURL.concat( ".bin" );
      t_httpUpdate_return ret = ESPhttpUpdate.update( fwImageURL );
      Serial.print("FirmwareFile:");
      Serial.println(fwImageURL);

      switch (ret) {
        case HTTP_UPDATE_FAILED:
          Serial.printf("HTTP_UPDATE_FAILD Error (%d): %s", ESPhttpUpdate.getLastError(), ESPhttpUpdate.getLastErrorString().c_str());
          break;

        case HTTP_UPDATE_NO_UPDATES:
          Serial.println("HTTP_UPDATE_NO_UPDATES");
          break;
      }
    }
    else {
      if (debug == 1) {
        Serial.println( "Already on latest version" );
      }
    }
  }
  else {
    Serial.print( "Firmware version check failed, got HTTP response code " );
    Serial.println( httpCode );
  }
  httpClient.end();
}
String TimeShowFormatted(int ms) {
  long days = 0;
  long hours = 0;
  long mins = 0;
  long secs = 0;
  String secs_o = ":";
  String mins_o = ":";
  String hours_o = ":";
  secs = ms / 1000; // set the seconds remaining
  mins = secs / 60; //convert seconds to minutes
  hours = mins / 60; //convert minutes to hours
  days = hours / 24; //convert hours to days
  secs = secs - (mins * 60); //subtract the converted seconds to minutes in order to display 59 secs max
  mins = mins - (hours * 60); //subtract the converted minutes to hours in order to display 59 minutes max
  hours = hours - (days * 24); //subtract the converted hours to days in order to display 23 hours max
  if (secs < 10) {
    secs_o = ":0";
  }
  if (mins < 10) {
    mins_o = ":0";
  }
  if (hours < 10) {
    hours_o = ":0";
  }
  return days + hours_o + hours + mins_o + mins + secs_o + secs;
}
void Sent_serial() {
  Blynk.virtualWrite(V0, TimeShowFormatted(millis()));
  Blynk.virtualWrite(V19, WiFi.RSSI()); //signal strength on V19

  // Sent serial data to Blynk terminal - Unlimited string readed
  String content = "";  //null string constant ( an empty string )
  char character;
  while (Serial.available()) {
    character = Serial.read();
    content.concat(character);
  }
  if (content != "") {
    String currentTime = String(hour()) + ":" + minute() + ":" + second();
    content = " " + content;
    content = currentTime + content;
    Blynk.virtualWrite (V99, content);
  }
}

#2

I found this on a post of Gunners Examples
Gunners Example Posts

Another glitch in SimpleTimer (of which BlynkTimer is based) is that when using timer ID labels, needed to do things like disable, enable, delete, etc. timers, it seems like the first timer in your code will also get ‘deleted’… I found making a simple “Sacrificial Timer” solves that little issue :slight_smile:

Possible that this is part of the problem ? My first timer is the one that dumps the flow data… seems likely!

thoughts?


#3

I’m reading this on an iPad, so studying your code is a bit trickier than it should be, but the way your code is structured doesn’t really help.
Here’s a few issues I’ve spotted…

Pin Referencing
You’re swapping between Wemos/NodeMCU silk-screened PIN numbers (the “D” numbers) and direct GPIO numbers. You should use one or the other - preferably GPIO numbers, with a comment that shows the D number to make checking your wiring easier.

Pin Declarations

You’re declaring GPIO14 (D5) twice. I’m not sure if this is a problem or not, but it’s confusing.

Your declarations are scattered through your code, which makes it difficult to track them down. Sometimes it helps to do that to keep sections of code structured, but if you do that then it helps to have a table of pins with a list of how they’re connected (but it must be kept up to date if you edit your declarations).

Interrupts
You’re suspending (detaching then re-attaching) interrupts while you do some processing. However, when you do this for OTA checks you’re detaching the wrong interrupt.

You’re directly referencing the GPIO number rather than using the variable(s) that you’ve set up for this, and using 13 instead of 14.
You’re then not re-attaching the interrupt. This isn’t what’s breaking your interrupt routine, as you’re referencing the wrong GPIO number, but needs fixing.

So, these won’t fix your problem, but might make it easier for you to spot issues when you reformat your code.

Pete.


#4

Pete! Thanks so much for the help here, I really appreciate you taking the time!

I think I’ve fixed these issues and posted the up-to date code below! Hopefully the timer thing i found will resolve the issue, I’ll be testing it momentarily!

If you see anything else glaring that would be great to know.

#include <Bounce2.h>
//#define BLYNK_DEBUG           // Comment this out to disable debug and save space
#define BLYNK_PRINT Serial    // Comment this out to disable prints and save space
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <ESP8266HTTPClient.h>
#include <ESP8266httpUpdate.h>
#include <ArduinoOTA.h>
#include <ESP8266WebServer.h>
#include <SimpleTimer.h>
#include <TimeLib.h>
#include <WidgetRTC.h>
#include <Ticker.h>              //for LED status
Ticker ticker;

char auth[] = "***";
char ssid[] = "***";
char pass[] = "***";
char hostNamed[] = "WATERFLOW";
const int FW_VERSIONs = 1003;
int FW_VER = FW_VERSIONs;
const char* fwUrlBase = "http://***/iot/";

SimpleTimer timer;
WidgetRTC rtc;
WidgetBridge WaterBridge(V122);

//Definitions-----------------------------
#define sensorInterrupt   14   //  D5 12
//#define sensorPin       14   //  D5 - used SensorInterupt instead so not defined 2x
#define airPin            12   //  D6 
#define LED               02   //  D4
#define SWITCHPIN         00   //  D3
#define averageperiod     5    // currently set to average the flow every 5 seconds


//Globals--------------------------------
float calibrationFactor = 4.5;
volatile byte pulseCount;
float flowRate;
unsigned int flowMilliLitres;
unsigned long totalMilliLitres;
unsigned long oldTime;
int countseconds = 0;           // count up to averageperiod
int averageflow = 0;            // used for averaging flow over averageperiod
bool notificationsent = false;  // to ensure just one message for each flow start
bool airState = false;         // air is OFF on start up
bool masterState = false;       //
bool flowoffprintonce = false;  // to ensure just one serial and terminal print for each flow stop
int rowIndex = 0;                //Saurabh
String currentDate  ;
String daybefore;
int rtctimer = 1; //check if RTC is OK and then disable / delete this #1 timer
int menu = 0;
int s;
int AirTimer;
int AirTime = 60000;
int AlertsVal = 0;
int disconnectCount = 0;
int debug = 0;
int virtualpin118 = 0; //UPDATE PIN


void setup()
{

  Serial.begin(115200);
  Serial.println();
  pinMode(sensorInterrupt, INPUT_PULLUP);
  digitalWrite(sensorInterrupt, HIGH);
  pinMode(airPin, OUTPUT);
  pinMode(SWITCHPIN, INPUT_PULLUP);
  digitalWrite(airPin, LOW);  // ACTIVE HIGH, air relay set to OFF on restart
  Serial.println("FW: " + FW_VERSIONs);

  flowMilliLitres   = 0;
  totalMilliLitres  = 0;
  oldTime           = 0;
  flowRate          = 0.0;
  pulseCount        = 0;

  // Configured to trigger on a FALLING state change (transition from HIGH state to LOW state)
  attachInterrupt(sensorInterrupt, pulseCounter, FALLING);//FALLING

  Blynk.begin(auth, ssid, pass);
  Serial.print("Auth: "); Serial.println(auth);
  Serial.print(hostNamed); Serial.println(" Booted");
  WiFi.hostname(hostNamed);
  ArduinoOTA.setHostname(hostNamed);
  ArduinoOTA.setPassword((const char *)"Atlas123");
  ArduinoOTA.begin();
  rtc.begin();
  Serial.println("Connected to Blynk");
  Serial.println(WiFi.localIP());
  timer.setTimeout(10L, []() {// "Sacrificial" Timer - needed when deleting timers NEW!
    Blynk.virtualWrite(V99, "START");
  });  // END sacrificial Function
  timer.setInterval(1000L, showFlow);
  timer.setInterval(2002L, Sent_serial);//send serial updates to blynk for debug
  timer.setInterval(10000L, readSwitch);  // check if air needs to be switched ON or OFF every 10s
  rtctimer = timer.setInterval(2000L, checkRTC);   // check every 2s if RTC is correct stop when Running
  checkForUpdates();
}

BLYNK_CONNECTED() {
  Blynk.syncAll();
  WaterBridge.setAuthToken("8577a1df4f85451b9ae99869976764a6");
  analogWrite(LED, 1023);
}
void showFlow()  // average the flow over averageperiod
{
  detachInterrupt(sensorInterrupt);  // Disable the interrupt while calculating flow rate and sending the value to the host
  // Because this loop may not complete in exactly 1 second intervals we calculate
  // the number of milliseconds that have passed since the last execution and use
  // that to scale the output. We also apply the calibrationFactor to scale the output
  // based on the number of pulses per second per units of measure (litres/minute in
  // this case) coming from the sensor.
  flowRate = ((1000.0 / (millis() - oldTime)) * pulseCount) / calibrationFactor;
  // Note the time this processing pass was executed. Note that because we've
  // disabled interrupts the millis() function won't actually be incrementing right
  // at this point, but it will still return the value it was set to just before
  // interrupts went away.
  oldTime = millis();

  // Divide the flow rate in litres/minute by 60 to determine how many litres have
  // passed through the sensor in this 1 second interval, then multiply by 1000 to
  // convert to millilitres.
  flowMilliLitres = (flowRate / 60) * 1000;

  // Add the ml passed in this second to the cumulative total
  totalMilliLitres += flowMilliLitres;

  if (debug == 1) {// Print the flow rate for this second in litres / minute
    Serial.print("Flow rate: ");
    Serial.print(int(flowRate));  // Print the integer part of the variable
    Serial.print("L/min");
    Serial.print("\t");          // Print tab space
    // Print the cumulative total of litres flowed since starting
    Serial.print("Output Liquid Quantity: ");
    Serial.print(totalMilliLitres);
    Serial.print("mL");
    Serial.print("\t");       // Print tab space
    Serial.print(totalMilliLitres / 1000);
    Serial.println("L");
  }

  countseconds++;
  if (countseconds > 0) {  // used to skip the first rogue data flow reading
    averageflow = averageflow + flowRate;   // used to calculate the average flow over averageperiod cycles
  }
  if (countseconds == averageperiod) {
    if (debug == 1) {
      Serial.print("Average water flow in litres / M is ");
      Serial.println(averageflow / averageperiod);
    }
    Blynk.virtualWrite(V2, int(averageflow) / averageperiod);
    Blynk.virtualWrite(V9, int((averageflow) / averageperiod) * 255);
    Blynk.virtualWrite(V1, totalMilliLitres / 3785.41);
    countseconds = 0;  // reset the counter
    chkFlow();
    averageflow = 0;     // reset the average but only after chkFlow() function
  }
  attachInterrupt(sensorInterrupt, pulseCounter, FALLING);  // Enable the interrupt again now that we've finished sending output
}

void chkFlow() {
  if ((averageflow > 3) && (notificationsent == false)) { // guess of a decent water pressure
    Serial.println("Water IS flowing.");
    WaterBridge.virtualWrite(V18, 1);
    if (AlertsVal == 1) {
      Blynk.notify("Sensor: Water IS flowing.");
    }
    notificationsent = true;         // stop getting messages until water stops flowing and starts again
    flowoffprintonce = false;        // when water stops flowing again we can restart serial and terminal print (once)

  }
  if ((averageflow <= 3) && (flowoffprintonce == false)) {
    Serial.println("Water is NOT flowing.");
    WaterBridge.virtualWrite(V18, 0);

    notificationsent = false;  // when water starts flowing again we can send another notification
    flowoffprintonce = true;      // stop serial and terminal prints after first pass of water stopping
    s = 0;
  }
}
void pulseCounter()
{
  pulseCount++;  // Increment the pulse counter
  //Serial.println(pulseCount);
}
void airControl()                // toggle air OFF and ON
{
  if (airState == 1) {
    Blynk.virtualWrite(V4, 1);
    Blynk.virtualWrite(V8, "ON");
    // Blynk.setProperty(V8, "color","#48E06B");
    Serial.println("Air is ON");
  }
  else {
    Blynk.virtualWrite(V4, 0);
    Blynk.virtualWrite(V8, "OFF");
    //   Blynk.setProperty(V8, "color","#04C0F8");
    Serial.println("Air is OFF");
  }
}
void checkRTC() {
  Serial.println("RTC check?");
  if (year() != 1970) {
    timer.disable(rtctimer);  // disable rtctimer now RTC is ok
    currentDate = String(day()) + "/" + month() + "/" + year();   // etc
    Serial.println("RTC started");
    daybefore = currentDate;
    timer.setInterval(60000L, table);   //start table() now RTC is OK
  }
}
void table()                               //Saurabh
{
  currentDate = String(day()) + "/" + month() + "/" + year();  // etc
  if (currentDate != daybefore)
  {
    Blynk.virtualWrite(V10, "add", rowIndex, daybefore, totalMilliLitres / 1000 + String(" litre")); //Saurabh
    Blynk.virtualWrite(V1, 0);
    Serial.println("working");
    flowMilliLitres = 0;
    totalMilliLitres = 0;
    daybefore = currentDate;
  }
}
void STOPair() {
  airState = 0;
  digitalWrite(airPin, LOW);  // turn AIR Off
  airControl();

}
void readSwitch() {
  int reading = digitalRead(SWITCHPIN);
  if (debug == 2) {
    Serial.println("Reading Switch");
    Serial.print("Reading "); Serial.println(reading);
  }
  if (reading == 0) {
    airState = 1;
    digitalWrite(airPin, HIGH);  // turn relay ON
    WaterBridge.virtualWrite(V9, 0);
    AirTimer = timer.setTimeout(AirTime, STOPair);
    airControl();
  }
}
BLYNK_WRITE(V3) {  // reset with button in PUSH mode on virtual pin 3
  int resetdata = param.asInt();
  if (resetdata == 1) {
    Serial.println("Clearing data");
    Blynk.virtualWrite(V2, 0);
    Blynk.virtualWrite(V1, 0);
    averageflow = 0;
    countseconds = 0;
    flowMilliLitres = 0;
    totalMilliLitres = 0;
  }
}
BLYNK_WRITE(V4) {  // Button in SWITCH mode on virtual pin 4 to control relay
  int controlRelay = param.asInt();
  if (controlRelay == 1) {
    airState = 1;
    if (AirTime != 0) {
      if (timer.isEnabled(AirTimer)) {
        timer.disable(AirTimer);
        AirTimer = timer.setTimeout(AirTime, STOPair);
      } else {
        AirTimer = timer.setTimeout(AirTime, STOPair);
      }
    }
    WaterBridge.virtualWrite(V9, 0);
    digitalWrite(airPin, HIGH);  // turn relay ON
  }
  else {
    airState = 0;
    digitalWrite(airPin, LOW);  // turn relay OFF
    if (timer.isEnabled(AirTimer)) {
      timer.disable(AirTimer);
    }
  }
  airControl();
}
BLYNK_WRITE(V5) //Alerts!
{
  AlertsVal = param.asInt(); // read incoming value from pin V5
  Serial.print("Alerts Value changed to " ); Serial.print(AlertsVal); Serial.println();
}
BLYNK_WRITE(V6) //time of air on
{
  int pinValue = param.asInt(); // read incoming value from pin V5
  AirTime = pinValue * 60000; // assign pin value to its own variable
  if (AirTime != 0) {
    if (timer.isEnabled(AirTimer)) {
      timer.disable(AirTimer);
      AirTimer = timer.setTimeout(AirTime, STOPair);
    }
  }
  Serial.print("Air Timer Updated to " ); Serial.print(AirTime); Serial.println();
}
BLYNK_WRITE(V20) { // reset with button in PUSH mode on virtual pin 20
  int resetdata = param.asInt();
  if (resetdata == 1) {
    Serial.println("Clearing table data");
    Blynk.virtualWrite(V10, "clr");

  }
}
BLYNK_WRITE(V100)//Reset the Board--------------------------------
{

  int pinValue = param.asInt(); // read incoming value from pin V100
  if (pinValue == 1) {
    Serial.println("Reboot Called. We shall reboot now.");
    //We will reset here
    ESP.restart();
  }
} BLYNK_WRITE(V101) //Debug Trigger--------------------------------
{
  Serial.println("FW: " + FW_VER);
  int pinValue = param.asInt(); // read incoming value from pin V100
  if (pinValue == 1) {
    Serial.println("Debug 1 Enabled.");
    debug = 1;
  } else if (pinValue == 2) {
    Serial.println("Debug 2 Enabled.");
    debug = 2;
  } else if (pinValue == 3) {
    Serial.println("Debug 3 Enabled.");
    debug = 3;
  } else {
    Serial.println("Debug Disabled.");
    debug = 0;
  }
}
BLYNK_WRITE(V118)//Update the Board--------------------------------
{
  int pinValue = param.asInt(); // read incoming value from pin V100
  if (pinValue == 1) {
    Serial.println("Update Called. We shall check for updates now.");
    virtualpin118 = 1;
    checkForUpdates();
  }
}
void loop() {
  Blynk.run();
  ArduinoOTA.handle();
  timer.run();
}

Tab 2:

void CheckConnection() {   // check every 11s if connected to Blynk server
  if (!Blynk.connected()) {
    ++disconnectCount;
    if (debug == 1) {
      Serial.println("Not connected to Blynk server");
      Serial.println("Disconnect Count: " + disconnectCount);
    }
    if (disconnectCount <= 20) {
      Blynk.connect();  // try to connect to server with default timeout
    } else if (disconnectCount > 20) {
      delay(3000);
      //ESP.restart();
      Serial.println("Not connected to Blynk server, Unhappy Restart");
      delay(5000);
    }
  }
  else {
    disconnectCount = 0;
    if (debug == 1) {
      Serial.println("Connected to Blynk server");
      Serial.println("FW:" + FW_VERSIONs);
    }
  }
}

void checkForUpdates() {
  detachInterrupt(sensorInterrupt);
  analogWrite(LED, 255);
  String devID = hostNamed;
  String fwURL = String( fwUrlBase );
  fwURL.concat( hostNamed );
  String fwVersionURL = fwURL;
  fwVersionURL.concat( ".version" );
  if (debug == 1) {
    Serial.println( "Checking for firmware updates." );
    Serial.print( "Device ID: " );
    Serial.println( hostNamed );
    Serial.print( "Firmware URL: " );
    Serial.println( fwVersionURL );
  }
  HTTPClient httpClient;
  httpClient.begin( fwVersionURL );
  int httpCode = httpClient.GET();
  if ( httpCode == 200 ) {
    String newFWVersion = httpClient.getString();
    //if (debug == 1) {
      Serial.print( "Current firmware version: " );
      Serial.println( FW_VERSIONs );
      Serial.print( "Available firmware version: " );
      Serial.println( newFWVersion );
    //}
    int newVersion = newFWVersion.toInt();

    if ( newVersion > FW_VERSIONs ) {
      Serial.println( "Preparing to update" );

      String fwImageURL = fwURL;
      fwImageURL.concat( ".bin" );
      t_httpUpdate_return ret = ESPhttpUpdate.update( fwImageURL );
      Serial.print("FirmwareFile:");
      Serial.println(fwImageURL);

      switch (ret) {
        case HTTP_UPDATE_FAILED:
          Serial.printf("HTTP_UPDATE_FAILD Error (%d): %s", ESPhttpUpdate.getLastError(), ESPhttpUpdate.getLastErrorString().c_str());
          break;

        case HTTP_UPDATE_NO_UPDATES:
          Serial.println("HTTP_UPDATE_NO_UPDATES");
          break;
      }
    }
    else {
      if (debug == 1) {
        Serial.println( "Already on latest version" );
      }
    }
  }
  else {
    Serial.print( "Firmware version check failed, got HTTP response code " );
    Serial.println( httpCode );
  }
  httpClient.end();
}
void Sent_serial() {
  String currentTime = String(hour()) + ":" + minute() + ":" + second();
  Blynk.virtualWrite(V0, currentTime);
  Blynk.virtualWrite(V19, WiFi.RSSI()); //signal strength on V19
  // Sent serial data to Blynk terminal - Unlimited string readed
  String content = "";  //null string constant ( an empty string )
  char character;
  while (Serial.available()) {
    character = Serial.read();
    content.concat(character);
  }
  if (content != "") {
    content = " " + content;
    content = currentTime + content;
    Blynk.virtualWrite (V99, content);
  }
}

#5

You’re still not re-attaching the interrupt at the end of the checkForUpdates function and as you’ve now fixed the detach state,ent this will be causing you a problem now.

If you want to know for sure if the interrupt is being called then pop a Serial.print statement in the pulseCounter function for testing.

Pete.


#6

Tried both of those, unfortunately no success yet.

I am going to build a second board and use it to bench test.

Anyone know anything about using the Wemos d1 mini with interrupts? all documentation I’ve found states it should be possible on the pin i’m using, but wondering if anyone knows anything I don’t.


#7

Well It seems it has all been resolved! I built a second set / test board and it all worked fine.

I went back and tested the flow sensor that was installed and realized it found it was outputting constant voltage instead of pulses… Bad Hardware!

Thanks for all your help with the coding! If anyone reads this and notices anything i should change please let me know.

Ill attach the working code for reference!

Main Tab:

#include <Bounce2.h>
//#define BLYNK_DEBUG           // Comment this out to disable debug and save space
#define BLYNK_PRINT Serial    // Comment this out to disable prints and save space
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <ESP8266HTTPClient.h>
#include <ESP8266httpUpdate.h>
#include <ArduinoOTA.h>
#include <ESP8266WebServer.h>
#include <TimeLib.h>
#include <WidgetRTC.h>


char auth[] = "***";//testboard
char ssid[] = "***";
char pass[] = "***";
char hostNamed[] = "WATERFLOW";
const int FW_VERSIONs = 1007;
int FW_VER = FW_VERSIONs;
const char* fwUrlBase = "http://*.***/iot/";

BlynkTimer timer;
WidgetRTC rtc;
WidgetBridge WaterBridge(V122);

//Definitions-----------------------------
#define sensorInterrupt   14   //  D5 12
//#define sensorPin       14   //  D5 - used SensorInterupt instead so not defined 2x
#define airPin            12   //  D6 
#define LED               02   //  D4
#define SWITCHPIN         00   //  D3
#define averageperiod     5    // currently set to average the flow every 5 seconds


//Globals--------------------------------
float calibrationFactor = 4.5;
volatile byte pulseCount;
float flowRate;
unsigned int flowMilliLitres;
unsigned long totalMilliLitres;
unsigned long oldTime;
int countseconds = 0;           // count up to averageperiod
int averageflow = 0;            // used for averaging flow over averageperiod
bool notificationsent = false;  // to ensure just one message for each flow start
bool airState = false;         // air is OFF on start up
bool masterState = false;       //
bool flowoffprintonce = false;  // to ensure just one serial and terminal print for each flow stop
int rowIndex = 0;                //Saurabh
String currentDate  ;
String daybefore;
int rtctimer = 1; //check if RTC is OK and then disable / delete this #1 timer
int menu = 0;
int s;
int AirTimer;
int AirTime = 60000;
int AlertsVal = 0;
int disconnectCount = 0;
int debug = 0;
int virtualpin118 = 0; //UPDATE PIN


void setup()
{

  Serial.begin(115200);
  Serial.println();
  pinMode(sensorInterrupt, INPUT_PULLUP);
  digitalWrite(sensorInterrupt, HIGH);
  pinMode(airPin, OUTPUT);
  pinMode(SWITCHPIN, INPUT_PULLUP);
  digitalWrite(airPin, LOW);  // ACTIVE HIGH, air relay set to OFF on restart
  Serial.println("FW: " + FW_VERSIONs);

  flowMilliLitres   = 0;
  totalMilliLitres  = 0;
  oldTime           = 0;
  flowRate          = 0.0;
  pulseCount        = 0;

  // Configured to trigger on a FALLING state change (transition from HIGH state to LOW state)
  attachInterrupt(digitalPinToInterrupt(sensorInterrupt), pulseCounter, FALLING);//FALLING

  Blynk.begin(auth, ssid, pass);
  Serial.print("Auth: "); Serial.println(auth);
  Serial.print(hostNamed); Serial.println(" Booted");
  WiFi.hostname(hostNamed);
  ArduinoOTA.setHostname(hostNamed);
  ArduinoOTA.setPassword((const char *)"Atlas123");
  ArduinoOTA.begin();
  rtc.begin();
  Serial.println("Connected to Blynk");
  Serial.println(WiFi.localIP());

  //TIMERS----------------------------------------
  timer.setTimeout(10L, []() {// "Sacrificial" Timer - needed when deleting timers NEW!
    Blynk.virtualWrite(V99, "START");
  });  // END sacrificial Function

  timer.setInterval(1000L, showFlow);
  timer.setInterval(2002L, Sent_serial);//send serial updates to blynk for debug
  timer.setInterval(10000L, readSwitch);  // check if air needs to be switched ON or OFF every 10s
  rtctimer = timer.setInterval(2002L, checkRTC);   // check every 2s if RTC is correct stop when Running
  checkForUpdates(); //maybe broken?
}

BLYNK_CONNECTED() {
  Blynk.syncAll();
  WaterBridge.setAuthToken("8577a1df4f85451b9ae99869976764a6");
  analogWrite(LED, 1023);
}
void showFlow()  // average the flow over averageperiod
{
  detachInterrupt(sensorInterrupt);  // Disable the interrupt while calculating flow rate and sending the value to the host
  if (debug == 1) {
    Serial.print("pulseCount: ");
    Serial.println(pulseCount);
  }
  // Because this loop may not complete in exactly 1 second intervals we calculate
  // the number of milliseconds that have passed since the last execution and use
  // that to scale the output. We also apply the calibrationFactor to scale the output
  // based on the number of pulses per second per units of measure (litres/minute in
  // this case) coming from the sensor.
  flowRate = ((1000.0 / (millis() - oldTime)) * pulseCount) / calibrationFactor;
  // Note the time this processing pass was executed. Note that because we've
  // disabled interrupts the millis() function won't actually be incrementing right
  // at this point, but it will still return the value it was set to just before
  // interrupts went away.
  oldTime = millis();

  // Divide the flow rate in litres/minute by 60 to determine how many litres have
  // passed through the sensor in this 1 second interval, then multiply by 1000 to
  // convert to millilitres.
  flowMilliLitres = (flowRate / 60) * 1000;

  // Add the ml passed in this second to the cumulative total
  totalMilliLitres += flowMilliLitres;

  if (debug == 1) {// Print the flow rate for this second in litres / minute
    Serial.print("Flow rate: ");
    Serial.print(int(flowRate));  // Print the integer part of the variable
    Serial.print("L/min");
    Serial.print("\t");          // Print tab space
    // Print the cumulative total of litres flowed since starting
    Serial.print("Output Liquid Quantity: ");
    Serial.print(totalMilliLitres);
    Serial.print("mL");
    Serial.print("\t");       // Print tab space
    Serial.print(totalMilliLitres / 1000);
    Serial.println("L");
  }
  pulseCount = 0; // Reset the pulse counter so we can start incrementing again
  countseconds++;
  if (countseconds > 0) {  // used to skip the first rogue data flow reading
    averageflow = averageflow + flowRate;   // used to calculate the average flow over averageperiod cycles
  }
  if (countseconds == averageperiod) {
    if (debug == 1) {
      Serial.print("Average water flow in litres / M is ");
      Serial.println(averageflow / averageperiod);
    }
    Blynk.virtualWrite(V2, int(averageflow) / averageperiod);
    Blynk.virtualWrite(V9, int((averageflow) / averageperiod) * 255);
    Blynk.virtualWrite(V1, totalMilliLitres / 1000);
    countseconds = 0;  // reset the counter
    chkFlow();
    averageflow = 0;     // reset the average but only after chkFlow() function
  }
  attachInterrupt(sensorInterrupt, pulseCounter, FALLING);  // Enable the interrupt again now that we've finished sending output
}

void chkFlow() {
  if ((averageflow > 3) && (notificationsent == false)) { // guess of a decent water pressure
    Serial.println("Water IS flowing.");
    WaterBridge.virtualWrite(V18, 1);
    if (AlertsVal == 1) {
      Blynk.notify("Sensor: Water IS flowing.");
    }
    notificationsent = true;         // stop getting messages until water stops flowing and starts again
    flowoffprintonce = false;        // when water stops flowing again we can restart serial and terminal print (once)

  }
  if ((averageflow <= 3) && (flowoffprintonce == false)) {
    Serial.println("Water is NOT flowing.");
    WaterBridge.virtualWrite(V18, 0);

    notificationsent = false;  // when water starts flowing again we can send another notification
    flowoffprintonce = true;      // stop serial and terminal prints after first pass of water stopping
    s = 0;
  }
}
void pulseCounter()
{
  //Serial.println(pulseCount);
  pulseCount++;  // Increment the pulse counter

}
void airControl()                // toggle air OFF and ON
{
  if (airState == 1) {
    Blynk.virtualWrite(V4, 1);
    Blynk.virtualWrite(V8, "ON");
    // Blynk.setProperty(V8, "color","#48E06B");
    Serial.println("Air is ON");
  }
  else {
    Blynk.virtualWrite(V4, 0);
    Blynk.virtualWrite(V8, "OFF");
    //   Blynk.setProperty(V8, "color","#04C0F8");
    Serial.println("Air is OFF");
  }
}
void checkRTC() {
  Serial.println("RTC check?");
  if (year() != 1970) {
    timer.disable(rtctimer);  // disable rtctimer now RTC is ok
    currentDate = String(day()) + "/" + month() + "/" + year();   // etc
    Serial.println("RTC started");
    daybefore = currentDate;
    timer.setInterval(60000L, table);   //start table() now RTC is OK
  }
}
void table()                               //Saurabh
{
  currentDate = String(day()) + "/" + month() + "/" + year();  // etc
  if (currentDate != daybefore)
  {
    Blynk.virtualWrite(V10, "add", rowIndex, daybefore, totalMilliLitres / 1000 + String(" litre")); //Saurabh
    Blynk.virtualWrite(V1, 0);
    Serial.println("working");
    flowMilliLitres = 0;
    totalMilliLitres = 0;
    daybefore = currentDate;
  }
}
void STOPair() {
  airState = 0;
  digitalWrite(airPin, LOW);  // turn AIR Off
  airControl();

}
void readSwitch() {
  int reading = digitalRead(SWITCHPIN);
  if (debug == 2) {
    Serial.println("Reading Switch");
    Serial.print("Reading "); Serial.println(reading);
  }
  if (reading == 0) {
    airState = 1;
    digitalWrite(airPin, HIGH);  // turn relay ON
    WaterBridge.virtualWrite(V9, 0);
    AirTimer = timer.setTimeout(AirTime, STOPair);
    airControl();
  }
}
BLYNK_WRITE(V3) {  // reset with button in PUSH mode on virtual pin 3
  int resetdata = param.asInt();
  if (resetdata == 1) {
    Serial.println("Clearing data");
    Blynk.virtualWrite(V2, 0);
    Blynk.virtualWrite(V1, 0);
    averageflow = 0;
    countseconds = 0;
    flowMilliLitres = 0;
    totalMilliLitres = 0;
  }
}
BLYNK_WRITE(V4) {  // Button in SWITCH mode on virtual pin 4 to control relay
  int controlRelay = param.asInt();
  if (controlRelay == 1) {
    airState = 1;
    if (AirTime != 0) {
      if (timer.isEnabled(AirTimer)) {
        timer.disable(AirTimer);
        AirTimer = timer.setTimeout(AirTime, STOPair);
      } else {
        AirTimer = timer.setTimeout(AirTime, STOPair);
      }
    }
    WaterBridge.virtualWrite(V9, 0);
    digitalWrite(airPin, HIGH);  // turn relay ON
  }
  else {
    airState = 0;
    digitalWrite(airPin, LOW);  // turn relay OFF
    if (timer.isEnabled(AirTimer)) {
      timer.disable(AirTimer);
    }
  }
  airControl();
}
BLYNK_WRITE(V5) //Alerts!
{
  AlertsVal = param.asInt(); // read incoming value from pin V5
  Serial.print("Alerts Value changed to " ); Serial.print(AlertsVal); Serial.println();
}
BLYNK_WRITE(V6) //time of air on
{
  int pinValue = param.asInt(); // read incoming value from pin V5
  AirTime = pinValue * 60000; // assign pin value to its own variable
  if (AirTime != 0) {
    if (timer.isEnabled(AirTimer)) {
      timer.disable(AirTimer);
      AirTimer = timer.setTimeout(AirTime, STOPair);
    }
  }
  Serial.print("Air Timer Updated to " ); Serial.print(AirTime); Serial.println();
}
BLYNK_WRITE(V20) { // reset with button in PUSH mode on virtual pin 20
  int resetdata = param.asInt();
  if (resetdata == 1) {
    Serial.println("Clearing table data");
    Blynk.virtualWrite(V10, "clr");

  }
}
BLYNK_WRITE(V100)//Reset the Board--------------------------------
{

  int pinValue = param.asInt(); // read incoming value from pin V100
  if (pinValue == 1) {
    Serial.println("Reboot Called. We shall reboot now.");
    //We will reset here
    ESP.restart();
  }
} BLYNK_WRITE(V101) //Debug Trigger--------------------------------
{
  Serial.println("FW: " + FW_VER);
  int pinValue = param.asInt(); // read incoming value from pin V100
  if (pinValue == 1) {
    Serial.println("Debug 1 Enabled.");
    debug = 1;
  } else if (pinValue == 2) {
    Serial.println("Debug 2 Enabled.");
    debug = 2;
  } else if (pinValue == 3) {
    Serial.println("Debug 3 Enabled.");
    debug = 3;
  } else {
    Serial.println("Debug Disabled.");
    debug = 0;
  }
}
BLYNK_WRITE(V118)//Update the Board--------------------------------
{
  int pinValue = param.asInt(); // read incoming value from pin V100
  if (pinValue == 1) {
    Serial.println("Update Called. We shall check for updates now.");
    virtualpin118 = 1;
    checkForUpdates();
  }
}
void loop() {
  Blynk.run();
  ArduinoOTA.handle();
  timer.run();
  interrupts();
}

Tab2:

void CheckConnection() {   // check every 11s if connected to Blynk server
  if (!Blynk.connected()) {
    ++disconnectCount;
    if (debug == 1) {
      Serial.println("Not connected to Blynk server");
      Serial.println("Disconnect Count: " + disconnectCount);
    }
    if (disconnectCount <= 20) {
      Blynk.connect();  // try to connect to server with default timeout
    } else if (disconnectCount > 20) {
      delay(3000);
      //ESP.restart();
      Serial.println("Not connected to Blynk server, Unhappy Restart");
      delay(5000);
    }
  }
  else {
    disconnectCount = 0;
    if (debug == 1) {
      Serial.println("Connected to Blynk server");
      Serial.println("FW:" + FW_VERSIONs);
    }
  }
}

void checkForUpdates() {
  detachInterrupt(sensorInterrupt);
  analogWrite(LED, 255);
  String devID = hostNamed;
  String fwURL = String( fwUrlBase );
  fwURL.concat( hostNamed );
  String fwVersionURL = fwURL;
  fwVersionURL.concat( ".version" );
  if (debug == 1) {
    Serial.println( "Checking for firmware updates." );
    Serial.print( "Device ID: " );
    Serial.println( hostNamed );
    Serial.print( "Firmware URL: " );
    Serial.println( fwVersionURL );
  }
  HTTPClient httpClient;
  httpClient.begin( fwVersionURL );
  int httpCode = httpClient.GET();
  if ( httpCode == 200 ) {
    String newFWVersion = httpClient.getString();
    //if (debug == 1) {
    Serial.print( "Current firmware version: " );
    Serial.println( FW_VERSIONs );
    Serial.print( "Available firmware version: " );
    Serial.println( newFWVersion );
    //}
    int newVersion = newFWVersion.toInt();

    if ( newVersion > FW_VERSIONs ) {
      Serial.println( "Preparing to update" );

      String fwImageURL = fwURL;
      fwImageURL.concat( ".bin" );
      t_httpUpdate_return ret = ESPhttpUpdate.update( fwImageURL );
      Serial.print("FirmwareFile:");
      Serial.println(fwImageURL);

      switch (ret) {
        case HTTP_UPDATE_FAILED:
          Serial.printf("HTTP_UPDATE_FAILD Error (%d): %s", ESPhttpUpdate.getLastError(), ESPhttpUpdate.getLastErrorString().c_str());
          break;

        case HTTP_UPDATE_NO_UPDATES:
          Serial.println("HTTP_UPDATE_NO_UPDATES");
          break;
      }
    }
    else {
      if (debug == 1) {
        Serial.println( "Already on latest version" );
      }
    }
  }
  else {
    Serial.print( "Firmware version check failed, got HTTP response code " );
    Serial.println( httpCode );
  }
  httpClient.end();
  attachInterrupt(sensorInterrupt, pulseCounter, FALLING);  // Enable the interrupt again now that we've finished updating.
}
void Sent_serial() {
  int HOUR;
  if ( hour() > 12 ) {
    HOUR = hour() - 12;
    
  } else {
    HOUR = hour();
  }
  String currentTime = String(HOUR) + ":" + minute() + ":" + second();
  Blynk.virtualWrite(V0, currentTime);
  Blynk.virtualWrite(V19, WiFi.RSSI()); //signal strength on V19
  // Sent serial data to Blynk terminal - Unlimited string readed
  String content = "";  //null string constant ( an empty string )
  char character;
  while (Serial.available()) {
    character = Serial.read();
    content.concat(character);
  }
  if (content != "") {
    content = " " + content;
    content = currentTime +" - "+ content;
    Blynk.virtualWrite (V99, content);
  }
}