Blynk do not display any data

Need Help With My Project
1

Hi, i need help. My blynk app do not display any data . When i upload the coding , there is no error ? Please someone help me . Thank you

2

first you have to post your sketch
else nobody can help you.
don’t forget to use backticks :joy:

1 Like
3 
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <ESP8266WebServer.h>
#include <SimpleTimer.h>

// Variable init
const int buttonPin = D2; // variable for D2 pin
const int ledPin = D7;
int addr = 0; //endereço eeprom
byte sensorInterrupt = 0; // 0 = digital pin 2

char auth[] = "ed76b860e42d4e818a531957ca5792f2";
char ssid[] = "Lutfil's iPhone";
char pass[] = "hadi123456";

float calibrationFactor = 4.5;
volatile byte pulseCount;
float flowRate;
unsigned int flowMilliLitres;
unsigned long totalMilliLitres;
unsigned long oldTime;
float totalLitres;
SimpleTimer timer;


void setup()
{
  Serial.begin(115200);
  Blynk.begin(auth, ssid, pass);
  pinMode(buttonPin, INPUT);
  pinMode(ledPin, OUTPUT);
  Serial.println();

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

  timer.setInterval(1000L, showFlow);
  attachInterrupt(digitalPinToInterrupt(buttonPin), pulseCounter, RISING);
}

void showFlow()
{
  detachInterrupt(sensorInterrupt);
  
 flowRate = ((1000.0 / (millis() - oldTime)) * pulseCount) / calibrationFactor;
 
 oldTime = millis();
 
 flowMilliLitres = (flowRate / 60) * 1000;
 
 totalMilliLitres += flowMilliLitres;
 totalLitres = totalMilliLitres/1000;

 unsigned int frac;

 // 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("."); // Print the decimal point
 // Determine the fractional part. The 10 multiplier gives us 1 decimal place.
 frac = (flowRate - int(flowRate)) * 10;
 Serial.print(frac, DEC); // Print the fractional part of the variable
 Serial.print("L/min");
 // Print the number of litres flowed in this second
 Serial.print("  Current Liquid Flowing: "); // Output separator
 Serial.print(flowMilliLitres);
 Serial.print("mL/Sec");

 // Print the cumulative total of litres flowed since starting
 Serial.print("  Output Liquid Quantity: "); // Output separator
 Serial.print(totalMilliLitres);
 Serial.println("mL");

// Print the cumulative total of litres flowed since starting
Serial.print("  Output Liquid Quantity: "); // Output separator
Serial.print(totalLitres/1000);
Serial.println("L");

Blynk.virtualWrite(V4, int(flowRate));
Blynk.virtualWrite(V5, int(flowMilliLitres));
Blynk.virtualWrite(V6, int(totalMilliLitres));
Blynk.virtualWrite(V7, float(totalLitres));

pulseCount = 0;

attachInterrupt(sensorInterrupt, pulseCounter, FALLING);

}

void pulseCounter() 
{
    // Increment the pulse counter
    pulseCount++;
}

void loop() 
{
  Blynk.run();
  timer.run(); 
}
4

What does your serial monitor show?

5

Serial monitor also did not display data

6

so attachInterrupt don’t work.

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7

Do you have your serial monitor set to the correct baud rate?

8

JustBertC no

9

you need to see serial monitor.
else we can’t help you.

10

Okay. I’ll try

2 Likes
11

At the serial monitor, it says isr not in iram! What is that mean ?

12

Seems it is interrupt issue !
if you are using ESP core 2.5.1 try to downgrade to 2.4.2 or 2.5.0 beta
2019-06-13_203039

1 Like
13

Omg! It works. Thank you so much…

3 Likes
14

you’re welcome :blush:

1 Like