Having trouble with FreqPeriodCounter.h

Projects Programming
1

I am trying to get a frequency reading off pin 5 of an Arduino Uno r3 using FreqPeriodCounter.h. The code as stands will not compile. Can someone look at it and tell me what I am doing wrong?

This is the error message Arduino generates.

sketch_aug26a:7: error: no matching function for call to 'FreqPeriodCounter::FreqPeriodCounter(int, long unsigned int (&)())'
C:\Documents and Settings\Mark Tiede\My Documents\Arduino\libraries\FreqPeriodCounter/FreqPeriodCounter.h:20: note: candidates are: FreqPeriodCounter::FreqPeriodCounter(byte, long unsigned int (*)(), unsigned int)
C:\Documents and Settings\Mark Tiede\My Documents\Arduino\libraries\FreqPeriodCounter/FreqPeriodCounter.h:18: note: FreqPeriodCounter::FreqPeriodCounter(const FreqPeriodCounter&)
sketch_aug26a:26: error: expected unqualified-id before '{' token

#include <LiquidCrystal.h>
#include <FreqPeriodCounter.h>

LiquidCrystal lcd(11, 10, A5, 4, 3, 2);

const byte freqPin = 5;
FreqPeriodCounter counter(freqPin, millis);

// setup the pins to be used
void setup()
  {
    lcd.begin(16,2);
    lcd.noCursor();
    lcd.clear();
  }

//////MAIN LOOP\\\\\\\

void loop()
  {
        tempolcd();
  }

///////functions\\\\\\\\\ 
void tempolcd()
  {

    counter.poll();
    float freq = (float)1 / counter.period;

    lcd.setCursor(0,1);  // Set cursor to column 1, row 2.
    lcd.print("TEMPO ");  // Printing TEMPO to the LCD screen.
    lcd.setCursor(6,1);  // Set cursor to column 7, row 2.
    lcd.print(freq);  // Display TEMPO time to LCD screen.
  }

Thanks,
Bruce

2

That's old code that's not compatible with newer IDE versions.

Try adding

#include <Arduino.h>

Up top.

3

GoForSmoke:
That's old code that's not compatible with newer IDE versions.
Try adding

#include <Arduino.h>

Up top.

That did not fix the issue.

4

That was a guess at a quick and easy, and I was in a hurry.

Looking at the code and the error messages -maybe- the compiler has trouble with what appears to be an undeclared variable named millis. Try;

const byte freqPin = 5;
FreqPeriodCounter counter(freqPin, millis());

or

const byte freqPin = 5;
unsigned long millis = millis();
FreqPeriodCounter counter(freqPin, millis);

sketch_aug26a:7: error: no matching function for call to 'FreqPeriodCounter::FreqPeriodCounter(int, long unsigned int (&)())'
C:\Documents and Settings\Mark Tiede\My Documents\Arduino\libraries\FreqPeriodCounter/FreqPeriodCounter.h:20: note: candidates are: FreqPeriodCounter::FreqPeriodCounter(byte, long unsigned int (*)(), unsigned int)
C:\Documents and Settings\Mark Tiede\My Documents\Arduino\libraries\FreqPeriodCounter/FreqPeriodCounter.h:18: note: FreqPeriodCounter::FreqPeriodCounter(const FreqPeriodCounter&)
sketch_aug26a:26: error: expected unqualified-id before '{' token

#include <LiquidCrystal.h>
#include <FreqPeriodCounter.h>

LiquidCrystal lcd(11, 10, A5, 4, 3, 2);

const byte freqPin = 5;
FreqPeriodCounter counter(freqPin, millis);