EL0432 CAUDALIMETRO MEDIDOR DE CAUDAL DE AGUA

 
volatile int NbTopsFan; //measuring the rising edges of the signal
int Calc; 
int hallsensor = 2; //The pin location of the sensor
 
void rpm () //This is the function that the interupt calls 
{ 
NbTopsFan++; //This function measures the rising and falling edge of the 
 
hall effect sensors signal
} 
// The setup() method runs once, when the sketch starts
void setup() //
{ 
pinMode(hallsensor, INPUT); //initializes digital pin 2 as an input
Serial.begin(9600); //This is the setup function where the serial port is 
 
initialised,
attachInterrupt(0, rpm, RISING); //and the interrupt is attached
} 
// the loop() method runs over and over again,
// as long as the Arduino has power
void loop () 
{
NbTopsFan = 0; //Set NbTops to 0 ready for calculations
sei(); //Enables interrupts
delay (1000); //Wait 1 second
cli(); //Disable interrupts
Calc = (NbTopsFan * 60 / 5.5); //(Pulse frequency x 60) / 5.5Q, = flow rate 
 
in L/hour 
Serial.print (Calc, DEC); //Prints the number calculated above
Serial.print (" L/hour\r\n"); //Prints "L/hour" and returns a new line
}