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#include <FlowMeter.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>


float a, b;
const byte rcPin = 2;
const byte pcPin = 3;
const unsigned long period = 1000;
const double cap = 10.0f; // l/min
const double kf = 21.0f; // Hz per l/min

LiquidCrystal_I2C lcd(0x27, 16, 2); // set the LCD address to 0x27 for a 16 chars and 2 line display

FlowSensorProperties MySensor = {cap, kf, {1, 1, 1, 1, 1, 1, 1, 1, 1, 1}};
FlowMeter rcMeter = FlowMeter(rcPin, MySensor);
FlowMeter pcMeter = FlowMeter(pcPin, MySensor);

void rcMeterISR() {
  rcMeter.count();
}

void pcMeterISR() {
  pcMeter.count();
}

/*********************************************************/
void setup()
{
  Serial.begin(9600);
  lcd.init();  //initialize the lcd
  lcd.backlight();  //open the backlight
  attachInterrupt(digitalPinToInterrupt(rcPin), rcMeterISR, RISING);
  attachInterrupt(digitalPinToInterrupt(pcPin), pcMeterISR, RISING);
  rcMeter.reset();
  pcMeter.reset();
}
/*********************************************************/
void loop()
{

  // simulate counts
  long frequency = random(MySensor.capacity * MySensor.kFactor);  // Hz
  long period = random(3 * frequency, 5000);                      // ms
  for (long i = 0; i < (long) ((float) period * (float) frequency / 1000.0f); i++) {
    rcMeter.count();
  }
  //

  delay(period);

  rcMeter.tick(period);
  pcMeter.tick(period);
  // output some measurement result
  Serial.println("FlowMeter - period: " + String(rcMeter.getCurrentDuration() / 1000.0f, 3) + "s, " +
                 "frequency: " + String(rcMeter.getCurrentFrequency(), 0) + "Hz, " +
                 "volume: " + rcMeter.getCurrentVolume() + "l, " +
                 "flow rate: " + rcMeter.getCurrentFlowrate() + "l/min, " +
                 "error: " + rcMeter.getCurrentError() + "%, " +
                 "total duration: " + rcMeter.getTotalDuration() / 1000.0f + "s, " +
                 "total volume: " + rcMeter.getTotalVolume() + "l, " +
                 "average flow rate: " + rcMeter.getTotalFlowrate() + "l/min, " +
                 "average error: " + rcMeter.getTotalError() + "%.");

  //Serial.println("PC Currently " + String(pcMeter.getCurrentFlowrate()) + " l/min, " + String(pcMeter.getTotalVolume()) + " l total.");

  lcd.setCursor(3, 0); // set the cursor to column 3, line 0
  lcd.print("RC");  // Print a message to the LCD
  lcd.setCursor(11, 0);
  lcd.print("PC");

  lcd.setCursor(2, 1); // set the cursor to column 2, line 1
  a = (float)random(0, 100) / 100.0;
  a = rcMeter.getCurrentFlowrate();
  lcd.print(a);  // Print a message to the LCD.
  lcd.setCursor(10, 1);
  b = (float)random(0, 100) / 100.0;
  b = pcMeter.getCurrentFlowrate();
  lcd.print(b);
}
/************************************************************/