Advice on how to implement button click, doubleClick & hold function.

Hardware Arduino Due
1

Hello.

I have spent hours and hours trying to accomplish my goal but I fail miserably.
I have bought one of those encoders which contain RGB diodes and a switch from sparkfun:

I had thought to write a class for this but first I need to make a sketch do what I want it to do, enabling single-, double-click and click-and_hold.

I am using an external interrupt to detect when the switch activates and I need to do something like:

void switchAction()
{
    if(this is the second click | withing 600mS since the first click)
    {
        doubleClick();
    }
    if(this is the first click)
    {
        if(hold time is les than 1000mS)
        {
            singleClick();
        }
        else if(hold time is more than 1000mS)
        {
            clickAndHold();
        }
    }
}

I don't like using volatile variables declare outside switchAction() but I find that I need to use several, though all my attempts at this has failed so far. I've tried using a clickCount variable but no success and I could really need some help.

I'll attach what I have that is working though it is not complete.

Regards

tryenc.ino (2.04 KB)

2

This is my lasted try on a code/pseudo-code:

void switchAction()
{
	unsigned long T = micros;
	static unsigned long oldT = 0;
	static uint8_t clickCount;
	unsigned long secInterval = oldT - T;
	if(clickCount > 0 | secIntervsl < 60000)
	{
		doubleClick();
		clickCount = 0;
	}
	else if(clickCount != 1 | )
	{
		if (T - oldT < 100000) 
		{
			
		}
		else
		{
			if(hold time is les than 1000mS)
			{
				singleClick();
				clickCount = 1;
			}
			else if(hold time is more than 1000mS)
			{
				clickAndHold();
			}
	}
	oldT = T;
}
3

Use timers and interrupts.

Code starting with "%" indicates raw pseudocode

Pseudocode:

#define clickPin 10
volatile int flag = 0;

attachInterrupt(clickPin, beginAction, RISING);
attachInterrupt(clickPin, clickAction, FALLING);

void beginAction()
{

if(flag==2 && timer1<timerD_threshold) //this means the signal went low once and doubleclick timer hasn't timedout, hence doubleclick happed.
{
doubleClick();
}

% start a timer timer1 //for click vs hold
%start a timer timer2 //for click vs double click

%set timer1 reset threshold //timer1 clears after this time is reached. Anything after this time is declared a "hold"

%set timer2 reset threshold //if timer2 is
%make sure to take care of timer overflows
flag = 1;

}

void clickAction() //happens when signal goes low
{
if (flag == 1 && timer1>holdThreshold) //if a LOW occurs after a threshold, it's a hold
{
hold();
%reset timer1
}
flag++;

}

void doubleClick()
{
//blah blah
flag = 0;
}
void singleClick()
{
//blah blah
flag = 0;
}
void hold()
{
//blah blah
flag = 0;
}

you get the point

4