Need help on making a timer type of thing and I am so lost

Using Arduino Programming Questions
1

Hi everyone,
I am trying to write a segment into my code that reads the status of a simple counting variable i.
Basically every time another part of the code runs it adds 1 to i.
I want the timer thing to say, if i is > 2 at any point in the last 48 hours it should set a different variable "x" to add 1.
I have poked around some websites looking at all the different time based classes but nothing is popping out.
Any help is greatly appreciated.

2

We need some information from you.

Show us a good schematic of your proposed circuit. Show us a good image of your ‘actual’ wiring.
Give links to components.

In the Arduino IDE, use Ctrl T or CMD T to format your code then copy the complete sketch.

Use the </> icon from the ‘reply menu’ to attach the copied sketch.

3

Make it a function that is used instead of a direct increment and check the value inside that function. Rename i to find all places where the function has to be called.

In OOP one would make i a property with an increment method.

4 
bool conditionFound = false;
unsigned long timeFound;
...
if (i > 2) {
  conditionFound = true;
  timeFound = millis();
}
...
if (conditionFound && millis() - timeFound <= 48UL*60*60*1000) { //corrected!
  x++;
  conditionFound = false;
}

I have changed the above several times. I am still not sure i understand exactly what you need.

5

once "i > 2", wouldn't the condition being monitored for always be true.

consider the follow snipped that monitors for a "change" in value > 2

void
monitor (void)
{
    static unsigned long msecLst;
           unsigned long msec     = millis ();

    if ( (msec - msecLst) > Period)  {
        msecLst = msec;

        if ( (cnt - cntLst) > 2)  {
            events++;
            Serial.println (events);
        }
        cntLst = cnt;
    }
}
6

I think you mean:
if (conditionFound && millis() - timeFound <= 48UL*60*60*1000) {

7

Oops! Thanks John, will correct that!

8

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.