Timer with ajustable time delay

Question

I have a led strip, and each led should be turned on sequentially, such as this one: [http://1.bp.blogspot.com/-CTT6yvYtdos/VihhhBItwjI/AAAAAAAAAvM/q1jbUylMMdM/s400/ezgif.com-video-to-gif.gif][1] The time delay between 2 consecutive leds is ts, and that time should be adjusted externally through a pushbutton switch. Each time the button is pressed, the time period shoud increment in a fixed amount. I've already used the timerOne library, but it just works with a fixed time delay ts. How can I solve this issue with VARIABLE time delay? I prefer to use interruptions rather than polling, since this system will be more complex (other buttons and variables will be involved). Thanks! Fernando

• Edgar Bonet: Re "the timerOne library [...] just works with a fixed time delay": what makes you believe that?

Answer 1

https://github.com/PaulStoffregen/TimerOne/blob/master/TimerOne.h#L55

Defines the function in TimerOne called SetPeriod(). That will change the period.

• fmarengo: I've found the solution, through the function attachInterrupt(function,period); inside loop() In other words, I wrote loop(){ Timer1.attachInterrupt(function,period); // rest of the code } where period changes inside the ISR called when the external button is pressed. Thanks a lot @jose can u c!!

Answer 2

I've found the solution, through the function

attachInterrupt(function,period);

inside

loop()

In other words, I wrote

loop(){
Timer1.attachInterrupt(function,period);
// rest of the code
}

where "period" changes inside the ISR called when the external button is pressed. Thanks a lot @jose can u c!!