Obsługa 2 czujników halla

Kod:
#include <Wire.h> 

#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x3F,20,4);

#define hallPin 5 





byte flowInterrupt = 0;   // 0 = digital pin 2

byte flowPin       = 2;    

float calibrationFactor = 4.0;

volatile byte flowCount;

unsigned long oldTime;

float predkosc;

float obwod_kola = 2.09;                        //tractor tire circum

byte ilosc_imp = 6;                             //pulses per revolution on sensor

float wycinek_kola = obwod_kola/ilosc_imp;      

float duration; 

float dawka;

float wydatek; 



  void setup() {

  Serial.begin(9600);

  lcd.init();

  lcd.backlight(); 



  pinMode(flowPin, INPUT);

  pinMode(hallPin, INPUT);

  digitalWrite(flowPin, HIGH);

  flowCount         = 0;

  wydatek          = 0.0;

  oldTime           = 0;

  attachInterrupt(flowInterrupt, flowCounter, FALLING);

}



  void loop() {



    if((millis() - oldTime) > 1000)    

  { 

    detachInterrupt(flowInterrupt);    

    wydatek = ((1000.0 / (millis() - oldTime)) * flowCount) / calibrationFactor;

    oldTime = millis(); 

    // Reset the pulse counter so we can start incrementing again

    flowCount = 0;

    // Enable the interrupt again now that we've finished sending output

    attachInterrupt(flowInterrupt, flowCounter, FALLING);

    



    duration = pulseInLong(hallPin, HIGH);

    if(duration > 0){

    predkosc = (wycinek_kola/(duration*0.00001))*3.6;     //get km/h

    }else{

      predkosc = 0.00;

      }

    dawka = (wydatek*600)/(0.5 * predkosc);               //get litres per hectare



    lcd.clear();

    lcd.setCursor(0, 0); 

    lcd.print(dawka, 1);

    lcd.print(" L/ha");  

    lcd.setCursor(0, 3); 

    lcd.print(predkosc, 1);

    lcd.print(" km/h");

  }   

  }





void flowCounter()

{

  // Increment the pulse counter for wydatek counting

  flowCount++;

}