Using debounce with interrupt for pushbutton

Projects Programming
1

Hi, I want to use the interrupt method for a switch in rotary encoder but I have found a bouncing problem, so after searching, I have found this code, but I don't know if it's good or there are other better solutions

long debouncing_time = 15; //Debouncing Time in Milliseconds
volatile unsigned long last_micros;
volatile boolean pushed = false;

void setup() {
pinMode(2,INPUT);
 attachInterrupt(0, debounceInterrupt, FALLING);
}

void loop() {
}

void debounceInterrupt() {
 if((long)(micros() - last_micros) >= debouncing_time * 1000) {
   pushed = true;
   last_micros = micros();
 }
}
2

If you're talking about the actual encoder function, check out this interrupt-driven encoder library I've been working on: GitHub - gfvalvo/NewEncoder: Rotary Encoder Library
It handles debounce without timing delays. Both encoder pins must be connected to interrupt-capable inputs on your board.

If you're talking about the push button switch on many encoders (the extra two pins), then don't bother with interrupts, just use the Bounce2 library.

3

did you have a look at this link?

https://playground.arduino.cc/Main/RotaryEncoders

4

gfvalvo:
If you're talking about the push button switch on many encoders (the extra two pins), then don't bother with interrupts, just use the Bounce2 library.

Yes this what i'm talking about , so the best solution is using the Bounce library

5

aymannox:
so the best solution is using the Bounce library

"Best" is probably a little subjective and dependent upon the application. I prefer Bounce2 for most uses.

6

gfvalvo:
"Best" is probably a little subjective and dependent upon the application. I prefer Bounce2 for most uses.

Ok,thanks for your help.